• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a transformer electrical circuit (1) for connecting an electrical equipment (2), such as a renewable energy-based generator or an energy storage system, to an electrical network (3). The circuit comprises a first voltage converter (10) connected to equipment; a transformer (20) connected to the first converter and a second voltage converter (20) connected to the transformer (2) and to the electrical network (3). The transformer (20) is a weakly coupled transformer, the magnetic coupling between the first coil (L1) and the second coil (L2) being less than 0.7. The transformer (20) comprises a first and a second capacitor (C1, C2) associated respectively with a first and second coil (L1, L2) so as to form with said corresponding coil (L1, L2) a circuit resonant to the frequency fO. The invention also relates to an electrical installation.
    公开号:FR3027151A1
    申请号:FR1459661
    申请日:2014-10-08
    公开日:2016-04-15
    发明作者:Yann Herriot
    申请人:Schneider Electric Industries SAS；
    IPC主号:
    专利说明:

    [0001] BACKGROUND OF THE INVENTION The invention relates to the field of the connection of electrical equipment to electrical networks regardless of their type. This type of electrical equipment can be either of the electric charge type, such as batteries, or of the electric source type, such as renewable energy generators, or of the type that can be alternately a load and an electrical source, such as that some batteries or super capacitors. STATE OF THE PRIOR ART The connection of an electrical equipment, whatever its type, to an electrical network having a different operating voltage from that of the electrical equipment generally requires a suitable transformer electrical circuit. Indeed, whether for the supply of electrical equipment, or whether it is for the electrical equipment to transmit electrical energy to the network, a voltage adaptation and / or galvanic isolation are necessary. This is all the more true when the equipment is a piece of equipment operating with a DC voltage and when the electrical network operates with an AC voltage. This type of transformer circuit is therefore fully necessary in the development of renewable energy equipment such as wind turbines, photovoltaic sensors or energy storage stations associated with renewable energy generators. In the latter case, that is to say the connection of an electrical equipment operating with a DC voltage to an AC voltage network of alternating frequency f2, a transformer electrical circuit comprises as illustrated in FIG. 1: a first voltage converter 10 adapted to connect the electrical equipment 2 to a part of the electrical circuit 20 operating with an alternating voltage of frequency f0, this first converter 10 being an inverter in the case where the electrical equipment 2 is a load and an AC / DC voltage converter in the case where the electrical equipment 2 is an electrical source, a transformer 20 connected to the first voltage converter and configured to adapt the amplitude of the alternating voltage of the frequency f 0 of the first converter 10 relative to the amplitude of the voltage of the electrical network 3, said transformer 20 comprising a primary coil rel 1 to the first converter 10 and a secondary coil, said primary and secondary coils being arranged integral in displacement, said transformer being possibly completed by a resonant circuit 21, placed on the primary or secondary side, a second converter 30 connected to the secondary coil adapted to connect the secondary coil to the mains 3. This second converter 30, in order to separate the frequency f0 from that of the circuit of the electrical network 3 comprises an inverter and a converter AC / DC voltage operating, in the case illustrated on the Figure 1 on the principle of cutting. Thus, in the case where the electrical equipment 2 is an electrical load, the second converter 30 comprises an inverter 31 connected to the secondary coil of the transformer 20 and an AC / DC voltage converter 35 connecting the inverter to the electrical network 3. In the case where the electrical equipment 2 is a generator, the second converter 30 comprises an AC / DC voltage converter connected to the secondary coil of the transformer and an inverter connecting the AC / DC voltage converter to the electrical network 3. It should be noted that such a circuit may also be suitable for electrical equipment which may alternatively be an electrical load and an electric source, such as batteries, using a first and a second bidirectional converter. Above and in the remainder of this document, electrical equipment is understood to mean both a voltage source type equipment, such as one or more photovoltaic panels or a wind turbine equipped with a rectifier stage, than a type of equipment. electric charge, such as a heating system of one or more photovoltaic panels, or equipment that can be alternately a source or an electric charge such as an energy storage system (for example batteries connected together) .
    [0002] In order to optimize the transformer efficiencies and to limit the disturbances introduced by the signal conversions both at the level of the electrical equipment and at the level of the electrical network, it is preferable that the frequency f 0 of the transformer is much higher than the frequency of the electrical network f2. Nevertheless, the frequencies f0 achievable by such a transformer of the prior art come up against certain technological and cost limits. Indeed, the transformer must both provide a good transformation efficiency while ensuring good galvanic isolation between the electrical equipment and the electrical network and this with a transformer dimension that remains reasonable. For these reasons, such circuits are limited to frequencies of the order of 20 kilohertz and therefore has a compactness and a limited transformation efficiency. DISCLOSURE OF THE INVENTION The object of the invention is to remedy these drawbacks and is thus more particularly intended to provide a transformer electrical circuit for connecting electrical equipment to an electrical network which, while retaining reasonable dimensions, can offer good conversion efficiency and good galvanic isolation with high operating frequency. For this purpose, the invention relates to a transformer electrical circuit for connecting an electrical equipment, such as a generator based on renewable energy or a system for storing energy, to an electrical network, said circuit comprising: first voltage converter adapted to connect the electrical equipment to a part of the electric circuit operating with an alternating voltage of frequency f0; a transformer connected to the first voltage converter and configured to realize an amplitude matching between the voltage of the electrical equipment and that of the electrical network, said transformer comprising a first coil connected to the first converter and a second coil magnetically coupled to the first coil, said first and second coils being arranged integral in displacement, the transformer forming the part of the electrical circuit 10 operating with alternating voltage e of frequency f0, - a second converter configured to connect said second coil to the electrical network. The transformer is a weakly coupled transformer, the magnetic coupling between the first coil and the second coil being less than 0.7, and the transformer has a first and a second capacitor associated respectively with the first and the second coil so as to forming with the corresponding coil a resonant circuit at the frequency f0. Such an electrical transformer circuit has the advantage of making it possible to obtain a transformation at a high frequency that can easily reach about ten kilohertz, this with reasonable dimensions and without the galvanic isolation being impaired since this is ensured by the use of a weakly coupled transformer. In addition, the transformation efficiency is maintained through a transformation that is performed at resonance. Thus such a circuit can be compact while providing good galvanic isolation and good processing efficiency. Note also that, when the first and second converters are bidirectional, this circuit makes it possible to connect to an electrical network as well an equipment type electric charge that a type of equipment and electrical equipment that can be tower in turn an electric charge and an electric source.
    [0003] The magnetic coupling of a transformer is defined by the following mathematical formula: (1) Kmag = M, I L1 L2 With M the transformation ratio of the transformer, L1 and L2 being the respective inductance values of the first and second transformer coil, generally known as primary and secondary coils. Above and in the remainder of this document is meant by amplitude matching between a first and a second voltage, ie: in the case where the first and the second voltage are both AC voltages, an amplitude adaptation as such, - in the case where the first voltage is a DC voltage and the second voltage is an AC voltage, an adaptation between the value of the first voltage and the amplitude of the second voltage, 15 - in the case where the first and the second voltage are both DC voltages, a value adjustment between the first and the second voltage, - in the case where the first voltage is an AC voltage and the second voltage is a DC voltage, an adaptation between amplitude of the first voltage and the value of the second voltage.
    [0004] Thus, more generally, the term "amplitude" of a DC voltage is its value. The magnetic coupling between the first coil and the second coil may be of the order of or less than 0.5. The transformer can be a type transformer in the air.
    [0005] Since this type of transformer does not have a magnetic core between the two coils, the galvanic isolation between the first and the second coil can be optimized without drastically increasing the dimensions of the transformer. The frequency f0 may be a frequency greater than 1 kHz, preferably greater than 5 kHz or even 10 kHz.
    [0006] Such a running frequency of the transformer makes it possible to provide a good transformation efficiency. The electrical equipment may be an electrical equipment operating with a DC voltage which is either an electrical charge, such as a battery, or an electrical source, such as a renewable energy-based generator, or both, such as a battery adapted to transmit energy to the electrical network, the first converter being able to be: in the case where the electrical equipment is an electrical load, an AC voltage converter in DC voltage with the input transformer and the electrical equipment output, in the case where the electrical equipment is a generator, an inverter with the electrical equipment input and the output transformer, in the case where the electrical equipment can work both in source and in charge , a bidirectional DC voltage AC voltage converter. The electrical equipment may be electrical equipment that is either an electrical load, such as a battery, or an electrical source, such as a renewable energy-based generator, or both, such as a battery adapted for transmitting power to the electrical network, and wherein the electrical network can be an alternating electric network of frequency f2, the second converter being adaptable for: in the case where the electrical equipment is an electrical load, converting a Frequency voltage f2 at a frequency voltage f0, the second converter being connected at the input to the electrical network and at the output at the second coil, - in the case where the electrical equipment is a generator, converting a voltage of frequency f0 into a voltage f2, the second converter being connected at the input to the second coil and at the output to the electrical network, 3027151 7 - in the case where the electrical equipment can operate both in source and in load, bidirectionally converting a voltage of frequency f2 into a frequency voltage f0. The second converter may comprise a switching system 5 adapted to supply the second coil with an alternating voltage of fundamental frequency f 0 and proportional to the voltage of the electrical network resulting from a low-pass filter, the control of said switching system being independent of the voltages electrical network and electrical equipment. Such a cutting system makes it possible to provide a second simplified converter since it does not require a control circuit synchronized with any of the voltage of the electrical network and the voltage of the electrical equipment. The electrical equipment may be electrical equipment that is either an electrical load, such as a battery, or an electrical source, such as a renewable energy-based generator, or both, such as an adapted battery. to transmit energy to the electrical network, and the power grid can be a DC voltage network, the second converter can be: in the case where the electrical equipment is an electrical load, an inverter adapted to supply from from the DC voltage of the electrical network, an alternating voltage of frequency f0 to the second coil, - in the case where the equipment is an electrical source, converting a voltage of frequency f0 into a DC voltage, the second converter being connected as input to the second coil and output to the electrical network, 25 in the case where the electrical equipment can function as well as a power source. as electric charge, adapted for bidirectional conversion of a DC voltage to AC voltage of frequency f0. The second converter may comprise a switching system 30 arranged to connect the electrical network and the second coil only during the 3027151 8 positive alternations of the alternating voltage of frequency f0 and a low-pass filter adapted to filter at least partially the frequency voltages. f 0. Such a second converter makes it possible to provide an electric circuit adapted to connect an electrical network to an electrical equipment with an alternating transformation voltage of frequency f0. The invention also relates to an electrical installation comprising: an electrical equipment such as a generator based on renewable energy or a system for storing energy, and a transformer electrical circuit connected to the electrical equipment 10 to connect the electrical equipment to an electrical network, the electric circuit being an electrical circuit according to the invention. Such an installation benefits from the advantages provided by a circuit according to the invention. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be better understood on reading the description of exemplary embodiments, given purely by way of indication and in no way limiting, with reference to the appended drawings in which: FIG. 1 schematically illustrates an exemplary circuit Electrical transformer for connecting an electrical equipment to an electrical network according to the prior art, Figure 2 schematically illustrates a transformer electrical circuit according to the invention connecting an electrical equipment to an electrical network, - Figure 3 illustrates a block diagram of the Operation of the transformer stage of an electric circuit according to the invention, - Figures 4A, 4B and 4C illustrate an example of operating voltages of a transformer electrical circuit with Figure 4A which illustrates the input current of the first converter powering the electrical equipment, Figure 4B which represents more It is precisely the current and the voltage at the level of the transformer stage corresponding to the electrical equipment, FIG. 4C, which represents the current and the voltage at the level of the transformer stage corresponding to the electrical network, FIG. FIG. 6 diagrammatically illustrates a variant of the electric circuit of FIG. 2 in which the electric circuit is a continuous circuit. FIG. 7 schematically illustrates an alternative configuration for the second converter equipping the electrical circuit of FIG. 2. the circuit illustrated in FIG. 2. Identical, similar or equivalent parts of the various FIGS. 10 carry the same reference numerals so as to facilitate the passage from one figure to the other. The different possibilities (variants and embodiments) must be understood as not being exclusive of each other and can be combined with one another.
    [0007] DETAILED DESCRIPTION OF PARTICULAR EMBODIMENTS FIG. 2 schematically illustrates a transformer electrical circuit 1 connecting an electrical apparatus 2, such as a renewable energy generator or an energy storage system, to an electrical network 3. Transformer electrical circuit 1 comprises: a first voltage converter 10 adapted to connect the electrical equipment 2 to a part of the circuit 1 operating with an alternating voltage of frequency f0, a transformer 20 connected to the first voltage converter 10 and configured to realize an amplitude matching between the voltage of the electrical equipment 2 and that of the electrical network 3, said transformer 20 having a first coil L1, connected to the first converter 10, and a second coil L2 magnetically coupled to the first coil L1 and a first and a second capacitor C1, C2 respectively associated with the first and at the second coil L1, L2 so as to form with the corresponding coil a resonant circuit at the frequency f0, a second converter 30 connected to the second coil L2 and to the electrical network 3 and which is configured to connect said second coil L2 5 to the electrical network 3. In order to illustrate the different locations for measuring the voltages of the electric circuit 1 and the currents flowing through it, the circuit illustrated in FIG. 2 shows ammeters 11, 12, lac and voltmeters U1, U2. In FIG. 2, the electrical equipment 2 is a DC voltage source whose voltage is denoted Vdc. Of course, the circuit illustrated in Figure 2 being bidirectional, the electrical equipment 2 may also be an electrical load or be alternately a source and a load, without departing from the scope of the invention. The first converter 10 comprises a first capacitance Cbus 15 in parallel with the electrical equipment 2 to filter the disturbances that could introduce the conversion offered by the first converter 10. The first converter 10 also comprises a switching circuit comprising four switches S1 , S2, S3, S4 so as to allow an adaptation between the DC voltage of the electrical equipment 2 and the alternating voltage of frequency f0 of the transformer 20. To do so, the pairs of switches S1 / S2 and S3 / S4 are alternately open at the frequency f0 so as to alternate the polarization of the connection between the electrical equipment 2 and the transformer 20. Such a control of the switches S1 to S4 is conventional to obtain conversions from a DC voltage to a voltage alternatively, an alternating voltage in DC voltage or a bidirectional conversion DC voltage-voltage al ternative. The transformer 20 makes it possible to interface the first and the second converter 10, by providing an amplitude adaptation between the voltage of the electrical equipment 2 and the voltage of the electrical network 3. In order to optimize the efficiency of the circuit 1 while ensuring a good galvanic isolation between the electrical equipment and the electrical network, the transformer is a weakly coupled transformer 3027151 11, that is to say that the magnetic coupling between the first coil and the second coil is lower at 0.7 and can be of the order or even less than 0.5, and the first and second coils are each associated with the corresponding capacitance to form a resonant circuit at the frequency f0.
    [0008] Such a weakly coupled transformer can be obtained by using a type transformer in air, i.e. having no magnetic core between the two coils. Thus, the coupling between the first and the second coil L1, L2 is in "air" since the magnetic core is replaced by a void space.
    [0009] The principle of operation of the transformer 20 is illustrated in FIG. 3. Indeed, the first coil L1 with the first capacitor C1 forms a first resonant circuit and the second coil L2 with the second capacitor C2 forms a second resonant circuit, these two resonant circuits being of resonance frequency f0. These two circuits must therefore respect the following equation: ## EQU1 ## With f0 the resonance frequency, co0 the resonant pulse, L1, L2 the respective inductances of the first and second coils L1, L2 and C1, C2 the respective capacitances of the first and second resonant circuits Thus, the following relationships between the voltage U1 and the currents 11 and 12 can be deduced. : 1 (3) Ul = / 1. (JCl + / L1 (o0) + j-Mcoo-I2 co 0 (4) I2 - Ul j - Mo ° As a result, we can see that the transformer works as a source of current with the amplitude of 12 which can be controlled by Ul.
    [0010] Since the circuit is symmetrical, the following relationships between voltage U2 and currents 11 and 12 can be deduced from relation (1): (5) U2 = R - 12 = 12. (jClo0 + jL1 (90) + (6) U2 = R- 12- Ul = j - Mo ° - Il j - Mo ° U2 Ul (7) II - R 4_2_2 iA / 00 / l // Wo In this way, the operation of the transformer as a current source is reversible It is possible to control 11 by U2 and 12 by U1 in a configuration in which the pairs U1 / I1 and U2 / I2 are in phase, i.e. with low resistive dipole behavior, it should also be noted that the low coupling makes it possible to limit the constraints on the sinusoidal nature of the currents 11 and 12. It is thus possible to limit the conversion stages for the first and the second converter 10, 30.
    [0011] The second coil L2 is connected to the second converter 30. The second converter, so as to allow the connection of the second coil to the electrical network 3, comprises four switches S5, S6, S7, S8 and two capacitors Cpos, Cneg connected in parallel. of these switches S5, S6, S7, S8. The switches S5, S6, S7, S8 of the second converter 30 are arranged to allow a connection of the second coil L2 with the electrical network 3 when the switches S5, S7 are closed and the switches S6, S8 are open and for isolate the electrical network 3 from the second coil L2 when the switches S5, S7 are open and the switches S6, S8 are closed. To obtain such an arrangement, the second coil L2 is connected to the electrical network via switches S5 and S7 with paralleling with the two capacitors Cpos, Cneg. The switches S6, S8 meanwhile connect the two terminals of the second coil L2 so as to short it. In the configuration illustrated in FIG. 2, without this being necessary for the operation of the electric circuit 1, the common terminal of the switches S8, S6 is connected to the common terminal between the capacitors Cneg, Cpos. Switching cells S5 / S6 and S8 / S7 are connected head to tail. If these switching cells S5 / S6 and S8 / S7 are polarized then their negative terminals are connected together or their positive terminals are connected together.
    [0012] The electrical network 3 is connected to the switches S5, S7 and the capacitors Cneg, Cpos through the inductor Lac so as to filter a part of the noise at the residual frequency f0 of the conversion supplied by the second converter 30. The choice of Lac positioning is not restrictive, it can be positioned between S7 and the electrical network or be divided into two inductances connecting S5 to the electrical network 3 for the first and S7 to the power grid for the second. The control of the switches S5, S6, S7, S8 is performed independently of the state of the voltage of the electrical network and the current in the second coil L2, that is to say that the second converter operates in open loop .
    [0013] Thus, the switches S5, S6, S7, S8 form a switching system adapted to supply the second coil L2 with an alternating voltage of fundamental frequency f0 and proportional to the voltage of the electrical network resulting from a low-pass filter, the control said cutting system being independent of the state of the voltages of the electrical network 3 and the electrical equipment 2.
    [0014] In this way, for a period of T = 1, the control of the switches S5, S6, S7, S8 can be summarized as follows: - for 0 <t <Y2T, S5 and S7 closed and S6 and S8 open, - for 1 / 2T <t <T, S5 and S7 open and S6 and S8 closed. Thus, in the closed S5 and S7 configuration and open S6 and S8 and considering equations (2) to (7) of the above described transformer 20, especially equation (7), it can be deduced that: Vac ( t) 2 (8) 11 (t) - sin (o) 0 - t - -7) "wo 7 4 The voltage Vac (t) can be written as follows Vac (t) = Vac - sin (o2 - t ), equation (8) can be written: Vac 2 n 25 (9) 11 (t) - sin (co 0 - t - -) - sin (co 2 - t) "(1) 0 7r 4 From In this way, the transformer 20 operates as a current source providing a current 11 whose amplitude is proportional to Vac 3027151 14 with a modulation at the frequency f0. It is this latter current which is illustrated in FIG. 4A. With the first converter 10 and its switches S1, S2, S3, S4, the phase of the voltage U1 relative to the current 11 can be controlled. However, as shown in equation (4) introduced previously, the current 12 is proportional to U2 with a phase shift of n / 4. Thus, if U1 is controlled so that it is in phase opposition with 11 as illustrated in FIG. 4B, the modulation of the voltage U1 makes it possible to control the amplitude of the current 12 and to obtain a zero phase shift between the current 12 and voltage U2. The amplitude of the current lac therefore results from the amplitude of the current 12, the voltage U2 being in phase with 12, as illustrated in FIG. 4C, and the capacitors Cpos and Cneg associated with the inductance Lac acting as a filter. pass low. It will be noted that with such a control of the switches S1, S2, S3, S4, switching of the switches S5, S6, S7, S8 takes place at 0 current and therefore with very low losses. It is therefore possible, with such an electrical transformation circuit 15, to control the current lac in the electrical network 3. In addition, the circuit illustrated in FIG. 3 being bidirectional, according to a similar principle, it is possible to power a device Electric 2 of the type an electric charge with the electrical network 3. It suffices for this to control the voltage U1 for which is in phase with 11 to operate as a generator vis-à-vis the 20 network, or to control the voltage U1 for which it is in phase opposition with 11 to function as a load with respect to the network. It may also be noted that, since the current 11 is dependent on U2 and that 12 is dependent on U1, it is possible by equipping the electrical circuit 1 with measuring systems that on the one side of the electrical equipment 2 only, to know the state of the electric circuit 1 on the electrical network side 3. FIG. 5 schematically illustrates an exemplary embodiment of a circuit 1 according to the invention in which each switch S1, S2, S3, S4, S5, S6, S7, S8 is replaced by an insulated gate bipolar transistor T1, T2, T3, T4, T5, T6, T7, T8, better known by its acronym IGBT, and a diode mounted antiparallel to the IGBT. Such use of an IGBT and a diode mounted together in an antiparallel configuration to function as a switch is known to those skilled in the art, this configuration is not further explained in this document. It should be noted, however, that with such a configuration, the frequency f 0 can typically be set at a value of 15 kHz thus providing a high conversion efficiency, and despite possibly higher operating voltages of the T5 / T6 switching cells and T7 / T8 formed by IGBT / diode pairs T5, T6, T7, T8. FIG. 6 illustrates an example of circuit 1 according to the invention in which the electrical network 3 is a continuous network. The circuit 1 according to this embodiment differs from the circuit 1 illustrated in FIG. 2 in that the electrical network 10 3 is connected in parallel with the capacitors Cpos and Cneg. In the case of FIG. 6, the connection assumes that if the switching cells S5 / S6 and S7 / S8, formed by the switches S5, S6, S7, S8, are polarized, they are connected to each other by their negative terminal. In this way for electrical equipment 1 which is an electrical source, the biased electrical network is supplied with a current or voltage of the same polarity. In this way, with such a connection, the electrical network is powered or charged by a current made substantially continuous by the filter formed by the capacitor Cpos, Cneg and the inductor Lac, depending on whether the power transfer with the equipment 1 is positive or negative.
    [0015] Similarly, when the electrical equipment 2 is a charge or an uncontrolled electrical source, the electrical circuit 1 makes it possible to adapt the voltage value seen by the electrical equipment, according to a principle similar to that explained for the illustrated circuit. In a variant of this embodiment, not illustrated, the second converter 30 may comprise, according to a principle similar to that of the first converter 10, a switching circuit comprising four four-quadrant switches so as to allow a adaptation between the DC voltage of the electrical network and the AC frequency voltage f0 of the transformer 20. In this way, the DC voltage supplied by the electrical network 3 can be cut to provide the second coil L2 with an alternating voltage of frequency f0. , with an amplitude always proportional to Vac, as previously explained FIG. variant of the second converter 20 illustrated in Figure 2. The switches of such a second converter 20 according to this variant 5 can be controlled in the same way as the switches S5, S6, S7, S8 so as to allow in a first position a connection of the second coil L2 with the electrical network 3 and in a second position to isolate the electrical network 3 of the second coil L2. It may be noted that in such a variant, a single capacitor Cac is used. 10
    权利要求:
    Claims (9)
    [0001]
    REVENDICATIONS1. Electrical transformer circuit (1) for connecting an electrical equipment (2), such as a renewable energy-based generator or a power storage system, to an electrical network (3), said circuit comprising: a first converter Voltage converter (10) adapted to connect the electrical equipment (20) to a part of the electrical circuit (1) operating with an alternating voltage of frequency f0, a transformer (20) connected to the first voltage converter and configured to perform an adaptation amplitude between the voltage of the electrical equipment (2) and that of the electrical network (3), said transformer (20) having a first coil (L1) connected to the first converter (10) and a second coil (L2) coupled magnetically to the first coil (L1), said first and second coils (L1, L2) being arranged integral in displacement, the transformer (20) forming the part of the circuit (1) operating with a tensi an alternating frequency f0, a second voltage converter (20) configured to connect said second coil (L2) to the electrical network (3), said circuit (1) being characterized in that the transformer (20) is a weakly coupled transformer , the magnetic coupling between the first coil (L1) and the second coil (L2) being less than 0.7, and in that the transformer (20) has a first and a second capacitor (C1, C2) associated respectively with the first and second coil (L1, L2) so as to form with said corresponding coil (L1, L2) a resonant circuit at the frequency f0.
    [0002]
    2. Circuit (1) according to claim 1 wherein the transformer (20) is a transformer type in the air. 3027151 18
    [0003]
    3. Circuit (1) according to any one of claims 1 to 2, wherein the frequency f0 is a frequency greater than 1 kHz preferably greater than 5 kHZ or 10 kHz. 5
    [0004]
    4. Circuit (1) according to any one of claims 1 to 3, wherein the electrical equipment (2) is an electrical equipment operating with a DC voltage which is either an electrical load, such as a battery, or a an electrical source, such as a renewable energy-based generator, or both, such as a battery adapted to transmit power to the power grid (3), the first converter (10) being: where the electrical equipment (2) is an electrical load, an AC DC voltage converter with the input transformer (20) and the output electrical equipment (2), - in the case where the electrical equipment ( 2) is a generator, an inverter with the electrical equipment input and the transformer (20) output, - in the case where the electrical equipment (2) can operate both in source and in load, a converter AC voltage in cont inue bidirectional. 20
    [0005]
    5. Circuit (1) according to any one of claims 1 to 4 wherein the electrical equipment (2) is an electrical equipment which is either an electrical load, such as a battery or an electrical source, such as a generator based on renewable energy, or both, such as a battery adapted to transmit energy to the electrical network (3), and in which the electrical network (3) is an alternating electric network of frequency f2 , the second converter (30) being adapted for: - in the case where the electrical equipment (2) is an electrical load, converting a voltage of frequency f2 into a frequency voltage f0, the second converter (30) being connected in input to the electrical network (3) and output to the second coil (L2), 3027151 19 - in the case where the electrical equipment (2) is a generator, converting a voltage of frequency f0 to a voltage f2, the second converter (30) being con connected in input to the second coil (L2) and output to the electrical network (3), - in the case where the electrical equipment (2) can work as well in source as in load, convert bidirectionally a voltage of frequency f2 in a frequency voltage f0.
    [0006]
    6. Circuit (1) according to claim 5 wherein the second converter (30) comprises a switching system adapted to supply to the second coil (L2) an alternating voltage of fundamental frequency f0 and proportional to the voltage of the resulting electrical network of a low-pass filter, the control of said switching system being independent of the state of the voltages of the electrical network (3) and the electrical equipment (2). 15
    [0007]
    7. Circuit (1) according to any one of claims 1 to 4, wherein the electrical equipment (2) is an electrical equipment which is either an electric charge, such as a battery or an electrical source, such as a renewable energy-based generator, or both, such as a battery adapted to transmit power to the power grid (1), and wherein the power grid (1) is a DC voltage electrical network the second converter (20) being: - in the case where the electrical equipment (2) is an electrical load, an inverter adapted to supply from the DC voltage of the electrical network (3) an alternating voltage of frequency f0 to the second coil (L2), 25 - in the case where the equipment is an electrical source, converting a voltage of frequency f0 to a DC voltage, the second converter being connected as input to the second coil (L2) and output to elec network in the case where the electrical equipment (2) can operate both as an electrical source and as an electrical load, adapted for bidirectional conversion of a DC voltage to AC voltage of frequency f0.
    [0008]
    8. Circuit (1) according to claim 7, wherein the second (30) 5 converter comprises a cutting system arranged to connect the power grid (3) and the second coil (L2) only during positive alternations of the AC voltage. frequency f0 and a low-pass filter adapted to at least partially filter the frequency voltages f0. 10
    [0009]
    9. Electrical installation comprising: electrical equipment (2) such as a generator based on renewable energy or a system for storing energy, and an electrical transformer circuit (1) connected to the electrical equipment (2) this for connecting the electrical equipment (2) to an electrical network (3), said installation being characterized in that the electrical circuit (1) is an electrical circuit according to any one of claims 1 to 8.
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    同族专利:
    公开号 | 公开日
    US20190006956A1|2019-01-03|
    CN105515434B|2020-08-25|
    FR3027151B1|2016-12-09|
    EP3007349A1|2016-04-13|
    CN105515434A|2016-04-20|
    EP3007349B1|2021-12-01|
    US20160105129A1|2016-04-14|
    US10734919B2|2020-08-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2008116042A2|2007-03-20|2008-09-25|Access Business Group International Llc|Power supply|
    WO2012162581A1|2011-05-26|2012-11-29|Enphase Energy, Inc.|Method and apparatus for generating single-phase power from a three-phase resonant power converter|
    US20140268898A1|2013-03-14|2014-09-18|Enphase Energy, Inc.|Efficient resonant topology for dc-ac inversion with minimal use of high frequency switches|
    SG84490A1|1994-04-29|2001-11-20|Research Frontiers Inc|Optical cell control system|
    JP2001359279A|2000-06-12|2001-12-26|Sony Corp|Bridge-type dc-dc converter|
    DE10128687A1|2001-06-13|2002-12-19|Philips Corp Intellectual Pty|DC converter|
    US6934167B2|2003-05-01|2005-08-23|Delta Electronics, Inc.|Contactless electrical energy transmission system having a primary side current feedback control and soft-switched secondary side rectifier|
    CN1705217A|2004-05-31|2005-12-07|索尼株式会社|Switching power supply circuit|
    JP2006191746A|2005-01-06|2006-07-20|Sony Corp|Switching power circuit|
    CH697550B1|2005-03-30|2008-11-28|Alstom Technology Ltd|Method for controlling a frequency converter.|
    JP5208374B2|2006-04-18|2013-06-12|シャープ株式会社|Grid interconnection power conditioner and grid interconnection power system|
    DE102007028078B4|2007-06-15|2009-04-16|Sma Solar Technology Ag|Device for feeding electrical energy into a power supply network and DC-DC converter for such a device|
    TWI464835B|2008-04-04|2014-12-11|Fujikura Ltd|Semiconductor package and method of manufacturing the same|
    JP4561886B2|2008-06-27|2010-10-13|ソニー株式会社|Power transmission device, power feeding device, and power receiving device|
    WO2011091249A2|2010-01-22|2011-07-28|Massachusetts Institute Of Technology|Grid-tied power conversion circuits and related techniques|
    US8310202B2|2010-08-17|2012-11-13|Ut-Battelle, Llc|Off-resonance frequency operation for power transfer in a loosely coupled air core transformer|
    US20130049674A1|2011-08-24|2013-02-28|Qualcomm Incorporated|Integrated photo voltaic solar plant and electric vehicle charging station and method of operation|
    US20130270919A1|2012-04-16|2013-10-17|Ut-Battelle, Llc|Above resonance frequency operation for wireless power transfer|
    US20140032730A1|2012-07-26|2014-01-30|Qualcomm Incorporated|Delay-tolerant web transaction delegations|
    CN104756347A|2012-09-03|2015-07-01|维斯塔斯风力系统集团公司|Connection system for power generation system with DC output|
    US9356523B2|2012-12-28|2016-05-31|Panasonic Intellectual Property Management Co., Ltd.|DC-to-DC converter|
    FR3004596A1|2013-04-11|2014-10-17|Schneider Electric Ind Sas|METHOD FOR INDUCTION LOADING OF A VEHICLE BATTERY|
    US20140327308A1|2013-05-05|2014-11-06|Palmetto Power, LLC|Solid-State Bi-Directional Balanced Energy Conversion and Management System|
    FR3011696B1|2013-10-09|2015-12-11|Schneider Electric Ind Sas|ENERGY CONVERSION SYSTEM, INDUCTION RECHARGING ASSEMBLY AND METHODS OF TRANSMITTING AND RECEIVING ASSOCIATED DATA|
    CN103595258A|2013-11-28|2014-02-19|南京航空航天大学|Boost type soft switching resonant converter and frequency fixing control method thereof|
    US20150311827A1|2014-04-28|2015-10-29|Victor M. Villalobos|Negentropic method and apparatus to generate usable work while reconditioning the energy source using electromagnetic energy waves|
    CN106208769B|2014-10-09|2020-02-07|松下知识产权经营株式会社|Power conversion device|WO2017167273A1|2016-04-01|2017-10-05|腾讯科技（深圳）有限公司|Service processing method and apparatus|
    US10014781B2|2016-08-02|2018-07-03|Abb Schweiz Ag|Gate drive systems and methods using wide bandgap devices|
    CN106452093A|2016-12-15|2017-02-22|深圳市英威腾电气股份有限公司|DC/DC converter|
    FR3067887B1|2017-06-15|2020-08-07|Inst Vedecom|REVERSIBLE ISOLATED CHARGER TO CONNECT A STORAGE DEVICE TO AN ELECTRICAL NETWORK|
    法律状态:
    2015-06-25| PLFP| Fee payment|Year of fee payment: 2 |
    2016-04-15| PLSC| Publication of the preliminary search report|Effective date: 20160415 |
    2016-10-07| PLFP| Fee payment|Year of fee payment: 3 |
    2017-10-16| PLFP| Fee payment|Year of fee payment: 4 |
    2018-10-24| PLFP| Fee payment|Year of fee payment: 5 |
    2019-10-22| PLFP| Fee payment|Year of fee payment: 6 |
    2020-10-27| PLFP| Fee payment|Year of fee payment: 7 |
    2021-10-27| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1459661A|FR3027151B1|2014-10-08|2014-10-08|ELECTRICAL CIRCUIT TRANSFORMER AND INSTALLATION COMPRISING SUCH CIRCUIT|FR1459661A| FR3027151B1|2014-10-08|2014-10-08|ELECTRICAL CIRCUIT TRANSFORMER AND INSTALLATION COMPRISING SUCH CIRCUIT|
    EP15188476.4A| EP3007349B1|2014-10-08|2015-10-06|Electrical transformer circuit and installation comprising such a circuit|
    US14/877,140| US20160105129A1|2014-10-08|2015-10-07|Transformer electrical circuit and installation comprising such a circuit|
    CN201510807639.5A| CN105515434B|2014-10-08|2015-10-08|Transformer circuit and device comprising same|
    US16/020,687| US10734919B2|2014-10-08|2018-06-27|Transformer electrical circuit and installation comprising such a circuit|
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