• 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:
    An electric machine (200) is provided. The electric machine has a stator, a rotor and a plurality of switches (260). The stator includes main windings (210) and auxiliary windings (220). The rotor is couplable to a motive power generator configured to rotate the rotor relative to the stator to generate at least six AC phases (a.c) in the main windings. The plurality of switches are respectively mounted between the auxiliary windings and groups of the main windings. The plurality of switches are adapted to convert the at least six phases into three phases when the plurality of switches are closed.
    公开号:FR3043856A1
    申请号:FR1660776
    申请日:2016-11-08
    公开日:2017-05-19
    发明作者:Ashraf Said Atalla；Manoj Ramprasad Shah；Satish Prabhakaran；James Pellegrino Alexander
    申请人:General Electric Co；
    IPC主号:
    专利说明:

    Polyphase electric machine and method of use
    The field of the invention generally relates to polyphase electrical machines and, more particularly, to an electrical machine that can serve as a polyphase motor and polyphase alternator and a method of using the same.
    Many electrical systems according to the prior art ensure, in normal operation, the dual function of motorized electric drive and generation. By way of non-limiting example, certain vehicle power supply systems, such as aircraft power supply systems, comprise electric machines serving as a propulsion engine and which can also serve as alternators. During the motorized drive, electricity from an auxiliary source is applied to the electric machine to rotate a rotor attached to a mechanical load. The mechanical loads include, by way of non-limiting example, the rotation of a drive shaft to start an engine and or accelerate a vehicle. Auxiliary power sources include, by way of non-limiting examples, various sources of alternating current (AC) and direct current (DC) such as grid AC, a battery, a photovoltaic module or any other suitable current source. for the mechanical load. During production, a motive power generator rotates the rotor to produce ace.The product c.a. is then dispensed at one or more c.a. or c.c.
    The cA generated by a particular electrical machine according to the prior art is ordinarily produced at a particular voltage and with one or more phases. This AC is then converted to a suitable voltage level by a transformer to supply a given load to AC and further undergoes DC conversion by a rectifier to supply a given load to DC. better quality if the AC is polyphase, eg three-phase, six-phase or twelve-phase. For example, the rectifier output phase currents combine to produce low residual ripple voltages and intensities as a result of the removal of phase shifted harmonics. Similarly, the motor driven by auxiliary current uses single- or three-phase current. Therefore, an electric machine that drives and generates the fact usually with three-phase current.
    Many electrical systems employing prior art dual drive and generation electrical machines described above have additional power electronics to provide the necessary drive and generation functions. By way of non-limiting example, a system according to the prior art for the supply of aircraft may comprise an autotransformer rectifier assembly (ATRU) comprising an autotransformer (ATU) and a rectifier. During generation, the ATU converts the generated three-phase current into higher order polyphase current, ie, six-phase or more. The polyphase current is then rectified in c.c. and distributed to the electrical loads at a.c or c.c. The additional power electronics used for conversion to polyphase current, then c.c., are often almost as heavy as the actual electrical machine. The extra weight in the electrical system reduces the efficiency. Moreover, the necessary transformers and rectifiers induce losses themselves, of which, by way of non-limiting examples, switching losses and parasitic current losses.
    According to a first aspect, an electric machine is proposed. The electric machine has a stator, a rotor and a plurality of switches. The stator comprises main windings and auxiliary windings. The rotor may be coupled to a motive power generator configured to rotate the rotor relative to the stator to create at least six alternating current (AC) phases in the main windings. The different switches are respectively mounted between the auxiliary windings and groups of the main windings. The different switches are designed to convert the at least six phases into three phases when the different switches are closed.
    According to one embodiment, the main windings comprise a plurality of sets of three-phase windings, each phase having a phase shift with respect to the other phases.
    According to another embodiment, the auxiliary windings have respective phases and amplitudes such that the groups of the main windings, when respectively associated with the auxiliary windings, are added to the three phases and to the corresponding common voltages.
    According to one characteristic, the electrical machine may comprise a plurality of additional windings on the stator, the plurality of additional windings, in combination with the main windings being designed to generate nine phases of alternating curant when the motive force generator rotates the rotor, and wherein the plurality of switches are further respectively mounted between the plurality of additional windings and the groups of the main windings the plurality of switches being further adapted to convert the nine phases to the three phases.
    According to another characteristic, the rotor, when rotated, is designed to generate a total of nine AC phases in the windings.
    In another aspect, there is provided a method of using an electric machine. The method involves the creation of at least six alternating current (AC) phases in the main windings of a stator of the electric machine. The method further includes coupling the auxiliary windings of the stator to groups of the main windings to convert the at least six phases into three phases. The method further comprises a motor driven by the auxiliary AC applied to the three phases of the electric machine.
    According to yet another aspect, there is provided an electrical system. The electrical system comprises an electric machine, a regulator, a rectifier and a transformer. The electric machine has main windings and auxiliary windings. The electric machine is used to generate a polyphase alternating current (AC) and further serves to provide a three phase AC drive function. The controller is designed to couple the auxiliary windings to the main windings during three-phase AC drive. The regulator is further designed to decouple the auxiliary windings during the generation of the polyphase AC. The rectifier is designed to straighten the DC polyphase DC (ie). The transformer is designed to convert the DC to DC output voltage.
    In one embodiment, the electrical system includes an interphase transformer configured to combine the output currents of the rectifier to convert the direct current to the output DC voltage.
    In one embodiment, the rectifier comprises a plurality of multi-pulse rectifiers coupled to respective output terminals for the main windings.
    According to one characteristic of the invention, a plurality of switches can be controlled by the controller. The invention will be better understood from the detailed study of some embodiments taken by way of nonlimiting examples and illustrated by the appended drawings in which: FIG. 1 is a schematic representation of an example of an electrical system; FIG. 2 is a diagrammatic representation of windings of an example of an electric machine intended to serve in the electrical system shown in FIG. 1; FIG. 3 is a schematic representation of an example of an electrical machine intended to serve in the electrical system shown in FIG. 1; FIG. 4 is a phase diagram for the electrical machines represented in FIGS. 2 and 3; and FIG. 5 is a flowchart of an exemplary method of using an electric machine such as the electric machines shown in FIGS. 1, 2 and 3.
    Unless otherwise indicated, the drawings presented herein are intended to illustrate details of embodiments of the present invention. It is believed that these details are applicable in all kinds of systems comprising one or more embodiments of the present invention. In this way, the drawings are not intended to contain all the standard details known to those of ordinary skill in the art which are necessary for the implementation of the embodiments presented herein.
    In the following description and claims, a number of the terms cited have the meanings below. "Possible" or "possibly" means that the fact or circumstance described next may or may not occur and that the description covers cases where the event occurs and cases where it does not occur. "Couplables" is a property of two or more objects that are easily coupled and decoupled with each other. Coupling and decoupling may, by way of non-limiting example, be electrical or mechanical. The coupling may be direct or may include additional parts or components to facilitate coupling and decoupling. For example, two electrical circuits can be coupled via one or more switches. Similarly, two mechanical parts can be coupled by a fastener or by a mechanism.
    Embodiments of the present invention relate to polyphase electrical machines. The electrical machines described here provide polyphase current generation and motor drive function by three-phase current. In addition, the electrical machines described here use a set of auxiliary windings during the motorized drive. The auxiliary windings are designed to have a particular phase and amplitude so that they each combine with a corresponding main winding to convert the polyphase electric machine into a three-phase electric machine, which facilitates driving by an auxiliary input current. phase. Auxiliary windings are de-energized while the electrical machine is generating power. The electrical machines described here furthermore comprise electronic power components such as, by way of non-limiting examples, rectifiers, filters and transformers for converting the polyphase alternating current into a DC output voltage.
    Figure 1 is a schematic representation of an example of an electrical system 100. The electrical system 100 comprises an electric machine such as a motor / alternator 102. The motor / alternator 102 comprises a stator 104 and a rotor 106. During the power generation the rotor 106 is couplable to a motive force generator 108 which rotates the rotor 106 relative to the stator 104 when the engine / alternator 102 is operating in the engine mode. In some embodiments, the motive force generator 108 is decoupled from the rotor 106 when the engine / alternator 102 is operating in alternator mode. The motive force generator 108 generally comprises a drive shaft coupled to a fuel engine, a turbine or any other suitable source of mechanical energy. In some embodiments, the motive force generator 108 is coupled to the rotor 106 via a transmission box (not shown). When the rotor 106 rotates relative to the stator 104, polyphase alternating current is generated in the stator 104. The polyphase current is converted to direct current for distribution.
    During the motorized drive, the current applied to the stator 104 rotates the rotor 106, which is coupled to a mechanical load. In some embodiments, the mechanical load includes starting a fuel engine. The mechanical load may comprise any other suitable mechanical load of which, by way of non-limiting examples, a turbine, a drum and a propulsion system.
    According to one embodiment, the electrical system 100 includes a cb 110 bus coupled to the regulator 118 and further coupled to the electrical machine and the auxiliary power source through respective switches. The electrical system 100 comprises a c.c. 110 main bus connectable to the stator 104 of the engine / alternator 102 via an alternator switch 112. The DC current generated by the motor / alternator 102 is supplied to the main bus c.c. 110 for distribution. The electrical system 100 further includes an auxiliary power source 114 connectable to the main DC bus 110 via an auxiliary current switch 116. During generation, the generator switch 112 is closed to allow the motor / alternator 102 to energize the DC main bus 110. In some embodiments, the auxiliary current switch 116 is open during generation. In other embodiments, the auxiliary current switch 116 is closed to facilitate the charging of the auxiliary power source 114. During the motor drive, the generator switch 112 is open and the auxiliary current switch 116 is closed. The auxiliary power source 114 energizes the DC main bus 110 and finally provides power to turn the rotor 106 of the motor / alternator 102. In some embodiments, the auxiliary power source 114 includes a battery or other storage tank. appropriate energy to store electricity. In some embodiments, the auxiliary power source 114 includes a photovoltaic module, a wind turbine, a combustion generator or other suitable source of electricity.
    The electrical system 100 further comprises a regulator 118 coupled to the main bus of cc 110. During the motorized drive, the regulator 118 is adapted to regulate the auxiliary current supplied to the stator 104 of the motor / alternator 102 via the main bus In some embodiments, the regulator 118 includes electronic power components for converting the DC current from the main bus of DC 110 to alternating current for supplying a load 120 to AC and starting the motor. alternator 102. These electronic power components include, by way of non-limiting example, a three-phase inverter. Through a motor disconnect 122, the regulator 118 supplies the stator 104 with the current from the main bus of cc 110. The regulator 118 supplies power to the load 120 to AC via a disconnector 124. charge.
    In some embodiments, the electrical system 100 operates first as a motor, the motor / alternator 102 starting the rotor 106 with the auxiliary current from the auxiliary power source 114 to start a fuel engine. In some embodiments, during the motorized drive, the auxiliary current is supplied only to the stator 104 and is not distributed to the AC load 120. Once the fuel engine has reached an appropriate speed, the electrical system switches to power generation mode, wherein the fuel engine operates as a motive power generator 108. During generation, the auxiliary power source 114 is disconnected and the generated DC power is applied to the main bus of cc 110 where it is distributed at charge 120 to ca
    Figure 2 is a schematic representation of windings for an example of an electric machine 200 for use in the electrical system 100 (shown in Figure 1). The electrical machine 200 has main windings 210 and auxiliary windings 220. The main windings 210 are used while the electric machine 200 is operating in generator mode. During operation in motor mode, the electric machine 200 uses both the main windings 210 and the auxiliary windings 220. The main windings are designed to generate six-phase alternating current. The electric machine 200 has six main windings organized in two sets of three phases: A1, B1 C1 and A2, B2, C2, the sets being completed by neutral lines 230 and 240, namely NI and N2.
    In other possible embodiments, the electric machine 200 has any number of phases greater than three. For example, some embodiments include increments of three phases, such as six phases, nine phases, and twelve phases. The polyphase current delivered by such embodiments improves the harmonic quality of the rectified DC output.
    During generation, the electrical machine 200 generates AC power at terminals 250 of the windings. Furthermore, the electrical machine 200 de-excites the auxiliary windings 220 by opening switches 260, isolating the auxiliary windings 220 from the AC voltages produced at terminals A1, B1, C1, A2, B2 and C2. The alternating voltages generated by the main windings 210 are each phase-shifted by a phase difference. In some embodiments, the phase difference is constant for all phases. In other possible embodiments, the phase difference varies according to the phases.
    During operation in motor mode, the electric machine 200 uses the main windings 210 and the auxiliary windings 220. The switches 260 are closed to couple certain main windings 210 to certain auxiliary windings 220. The coupling of main windings to auxiliary windings affects a vector sum of the phases of each winding, which gives three common phases. Three-phase current is applied to these common phases via terminals XI, Y1 and Z1.
    The phase and amplitude, ie the voltage, of the auxiliary windings 220 is a function of the number of turns in the coils, the offset between the notches, the length of the coils and the span, or the no, coils. Each of the auxiliary windings 220 is adapted to be associated with one of the main phase windings 210 so that the phase and the amplitude obtained are common to one or more other main windings 210. The electric machine 200 comprises six main windings 210, which are organized into groups: A1 and A2, B1 and B2, C1 and C2. If the auxiliary winding Y1 is associated with the main winding A1, the phase and the amplitude obtained are common to those of the main winding A2 associated with Y2, which allows these terminals to be coupled. Similarly, the auxiliary winding XI is associated with the main winding B1 and the auxiliary winding ZI is associated with the main winding C1. When the switches 260 are closed, the electric machine 200 can operate as a three-phase motor.
    In another possible embodiment, the switches 260 are designed such that the electrical machine 200 can operate as a three-phase motor when the switches 260 are open, and the electrical machine 200 can further function as an alternator when the switches 260 are closed. .
    Figure 3 is a schematic representation of an example of an electric machine 300 for use in the electrical system 100 (shown in Figure 1). The electric machine 300 is a hexaphase machine which comprises a stator 310 having main windings A1, B1, C1, A2, B2 and C2, and auxiliary windings XI, Y1, Z1, X2, Y2 and Z2. The stator 310 further includes neutral lines N1 and N2. The auxiliary windings XI, Y1, Z1, X2, Y2 and Z2 are activated by the closing of switches 320, converting the electrical machine 300 into a three-phase motor supplied to motorized drive terminals 330. The switches 320 couple the auxiliary windings to the windings such that each of the auxiliary windings is associated with a main winding to form a three-phase machine.
    During the generation, alternating current is generated in the main windings Al, Bl, Cl, A2, B2 and C2. The polyphase alternating current is passed through rectifiers 340 and 350 to produce a direct current. DC is then passed through transformers 360 and 370, and then into a filter 380 to produce a DC output at alternator terminals 390.
    Figure 4 is a phase diagram 400 for electrical machines 200 and 300 (respectively shown in Figures 2 and 3). The phase diagram 400 comprises a graph 410 of the generation phases and a graph 420 of the motorized drive phases for a hexaphase machine.
    On the graph 410 of the generation phases, six phases corresponding to six main windings are illustrated: Al, Bl, Cl, A2, B2 and C2. The six phases are organized into two sets of three phases where each of the three phases is shifted 120 degrees from the others. In addition, the sets of three phases are phase shifted by 30 degrees between them. During the generation, alternating voltages are generated on each of the six phases, each phase being out of phase with the other phases.
    On the graph 420 of the motorized training phases are represented the main phases Al, Bl, Cl, A2, B2 and C2. The graph 420 of the motorized drive phases also represents the auxiliary windings XI, X2, Y1, Y2, Z1 and Z2. The graph 420 of the motor-driven phases furthermore shows that when the auxiliary windings are coupled to the main windings, the hexaphase machine is transformed into a three-phase machine having phases A, B and C. Phase A is a combination of the main phases A1 and A2 and auxiliary phases Y1 and Y2. When the main winding A1 is coupled to the auxiliary winding Y1, the sum of the respective phases and amplitudes is the phase and the amplitude of the phase A. Similarly, when the main winding A2 is coupled to the auxiliary winding Y2, the sum of the respective phases and amplitudes is the phase and the amplitude of the phase A. In the same way, the phase B is a combination of the main phases B1 and B2 and the auxiliary phases XI and X2 and the phase C is a combination of the main phases C1 and C2 and the auxiliary phases Z1 and Z2.
    Each of the auxiliary windings XI, X2, Y1, Y2, Z1 and Z2 is designed such that the vector sum of their phase and their amplitude with one of the main windings Al, B1, C1, A2, B2 and C2 produces a phase and amplitude common with another of the main windings. For example, as shown in graph 420 of the motorized driving phases, the auxiliary winding Y1 has a coil length, a number of turns, a pitch of the coils and a position of the notches such that it produces a phase and a amplitude which, when coupled to the main winding Al, produces phase and amplitude of phase A, which are a common phase and amplitude with the sum of the main winding A2 and the auxiliary winding Y2.
    In another possible embodiment, the auxiliary windings XI, X2, Y1, Y2, Z1 and Z2 are coupled to a set of three phases of the main windings A1, B1, C1, A2, B2 and C2. For example, an auxiliary winding Y is coupled to the main winding A2, the vector sum of the phase Y and A2 being Al instead of giving an intermediate phase A, as shown in the graph 420 of the motorized phases the common phase and amplitude are simply the Al phase.
    Figure 5 is a flow diagram of an exemplary SOO method of using an electric machine such as electrical machines 102, 200 and 300 (respectively shown in Figures 1, 2 and 3). Referring now to Figures 1, 2 and 5, the method 500 starts at a start step 510. In a generation step 520, six AC phases are generated in the main windings 210 of the stator 104. In embodiments, the six AC phases are passed through rectifiers, transformers and filters designed to combine DC output currents of the rectifier to produce a DC output voltage.
    During a coupling step 530, the auxiliary windings 220 are coupled to the main windings 210 by the switches 260. The coupling of the auxiliary windings 220 and the main windings 210 causes a conversion of the six phases into three phases, which facilitates the applying a three-phase auxiliary current to the main windings 210 and the auxiliary windings 220 for the motorized drive. In a motorized drive step 540, the electric machine 102 drives using the three-phase auxiliary current using the three phases. The method 500 terminates in an end step 550.
    The polyphase electrical machines described above provide the polyphase current generation and the motor drive function by three-phase current. The electrical machines described herein use a set of auxiliary windings during the motorized drive mode. The auxiliary windings are designed to have a particular phase and amplitude so that they each combine with a corresponding main winding to convert the polyphase electric machine into a three-phase electric machine, which facilitates the motorized drive using of a three-phase input auxiliary current. Auxiliary windings are de-energized while generating current. The electrical machines described here furthermore comprise electronic power components such as, by way of non-limiting examples, rectifiers, filters and transformers for converting the polyphase generated alternating current into DC output voltage.
    An example of a technical effect of the methods, systems, and devices described herein includes at least one of the following effects: (a) three-phase motor drive and multi-phase power generation in a single electrical machine assembly; (b) reducing the need for electronic power components for power and phase shift; (c) lightening the electrical system by removing the electronic power components; (d) incorporating rectifiers, transformers and filters in the electrical machine assembly; (e) improving the efficiency of the electrical system by eliminating electronic components subject to losses; and (f) improving the overall efficiency of the system by lightening it.
    Examples of embodiments of multi-phase electrical machine methods, systems and devices are not limited to the specific embodiments described herein, but, instead, system elements and / or process steps can be used independently and separately. other elements and / or steps described herein. For example, the methods can also be used in combination with other unconventional polyphase electrical machines and are not limited to implementation only with the systems and methods described herein. On the contrary, the exemplary embodiment can be implemented and used in the context of a large number of other applications, equipment and systems likely to benefit from reduced cost, less complexity, more commercially available, better reliability at high temperatures and greater memory capacity.
    Although characteristic details of various embodiments of the invention may be shown in some drawings and not others, it is only for convenience. According to the principles of the invention, any detail of a drawing may be cited and / or claimed in combination with any detail of any other drawing.
    List of marks 100 Electrical system 102 Engine / alternator 104 Stator 106 Rotor 108 Power generator 110 DC main bus 112 Alternator switch 114 Auxiliary power supply 116 Auxiliary current switch 118 Controller 120 AC load 122 Motor switch 124 Load switch 200 Electric machine 210 Main windings 220 Auxiliary windings 230 Neutral line 240 Neutral line 250 Winding terminals 260 Switches 300 Electric machine 310 Stator 320 Switches 330 Motorized drive terminals 340 Rectifier 350 Rectifier 360 Transformer 370 Transformer 380 Filter 390 Generation terminals 400 Phase diagram 410 Generation phase diagram 420 Motorized drive phase diagram 500 Process 510 Start step 520 Generation step 530 Coupling step 540 Motorized drive step 550 End step
    Al Main winding A2 Main winding B1 Main winding B2 Main winding
    Cl Main winding C2 Main winding XI Auxiliary winding X2 Auxiliary winding Y1 Auxiliary winding Y2 Auxiliary winding ZI Auxiliary winding Z2 Auxiliary winding A Main winding B Main winding C Main winding X Main winding Y Main winding Z Main winding
    权利要求:
    Claims (14)
    [1" id="c-fr-0001]
    An electric machine (102; 200; 300) comprising: a stator (104; 310) comprising auxiliary windings (220) and main windings (210), said main windings being organized into groups of said main windings; a rotor (106) couplable to a motive force generator (108) adapted to rotate said rotor relative to said stator to generate at least six AC phases (i.e.) in said main windings; and a plurality of switches (260; 320) respectively mounted between said auxiliary windings and groups of said main windings, said plurality of switches being adapted to convert the at least six phases into three phases when said plurality of switches are closed.
    [2" id="c-fr-0002]
    An electrical machine (102; 200; 300) according to claim 1, wherein said plurality of switches (260; 320) are open when the motive force generator (108) rotates said rotor (106) to generate the minus six AC phases, and wherein said plurality of switches are closed when three-phase alternating current is applied to said stator (104; 310) to rotate said rotor for the motor drive.
    [3" id="c-fr-0003]
    The electrical machine (102; 200; 300) of claim 2, wherein said auxiliary windings (220) are de-energized when said plurality of switches (260; 320) are open.
    [4" id="c-fr-0004]
    An electrical machine (102; 200; 300) according to claim 1, wherein said main windings (210) comprise a plurality of three-phase winding assemblies, each phase having a phase shift with respect to the other phases.
    [5" id="c-fr-0005]
    An electrical machine (102; 200; 300) according to claim 4, wherein said auxiliary windings (220) have respective phases and amplitudes such as groups of said main windings (210) when respectively associated with said windings. auxiliaries, are added to the three phases and to the corresponding common voltages.
    [6" id="c-fr-0006]
    Electric machine (102; 200; 300) according to claim 5, wherein the respective phases and amplitudes of said auxiliary windings (220) are a function of coil lengths, number of coil turns and no respective coils of said auxiliary windings.
    [7" id="c-fr-0007]
    The electrical machine (102; 200; 300) of claim 1, further comprising: a plurality of additional windings on said stator, said plurality of additional windings in combination with said main windings (210) being adapted to generate nine AC phases when the motive force generator (108) rotates said rotor (106); and wherein said plurality of switches (260; 320) are further respectively mounted between said plurality of additional windings and groups of said main windings, said plurality of switches being further adapted to convert the nine phases to all three phases.
    [8" id="c-fr-0008]
    An electrical machine (102; 200; 300) according to claim 1, wherein said rotor (106), when rotated, is adapted to generate a total of nine AC phases in said windings (210). .
    [9" id="c-fr-0009]
    An electrical system (100), comprising: an electric machine (102; 200; 300) having main windings (210) and auxiliary windings (220), said electric machine for generating a polyphase alternating current (AC) and to be realized a motorized drive using three-phase AC; a regulator (118) adapted to couple said auxiliary windings to said main windings during the motorized drive using the three-phase AC, and to disconnect said auxiliary windings during the generation of the polyphase AC; a rectifier (340, 350) adapted to rectify the DC polyphase DC (c.c.); and an interphase transformer (370) adapted to combine the rectifier output currents to convert the DC to DC output voltage. wherein said electrical machine further comprises: a stator comprising said main windings and said auxiliary windings; a rotor couplable to a motive power generator adapted to rotate said rotor with respect to said stator to generate the polyphase alternating current in said main windings; and a plurality of switches controllable by said regulator and respectively mounted between said auxiliary windings and groups of said main windings, said plurality of switches being adapted to convert the multiphase AC to three phases when said plurality of switches are closed.
    [10" id="c-fr-0010]
    The electrical system (100) of claim 9, wherein said rectifier (340, 350) comprises a plurality of multi-pulse rectifiers coupled to respective output terminals (390) for said main windings (210).
    [0011]
    The electrical system (100) of claim 9, further comprising a filter (380) adapted to combine output ccs of the rectifier (340, 350) to generate the DC output voltage.
    [12" id="c-fr-0012]
    The electrical system (100) of claim 9, wherein said main windings (210) comprise two sets of three-phase windings, said main windings being adapted to generate six-phase alternating current.
    [13" id="c-fr-0013]
    The electrical system (100) of claim 12, wherein said auxiliary windings (220) comprise six auxiliary windings couplable to said two sets of three-phase windings.
    [14" id="c-fr-0014]
    The electrical system (100) of claim 9, further comprising: an auxiliary current source (114) adapted to provide auxiliary c.c. and a DC bus (110) coupled to said controller (118) and further coupled to said electrical machine (102; 200; 300) and said auxiliary power source through respective switches (260; 320), said a DC bus being arranged to supply power to said electric machine from said auxiliary power source during the motorized drive; said regulator further being connectable to a load (120) via a switch (124), said regulator being further adapted to supply alternating current to said load at AC from said c.c.
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    同族专利:
    公开号 | 公开日
    US20170141633A1|2017-05-18|
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    US9680344B2|2017-06-13|
    BR102016026304A2|2017-07-25|
    GB2544887B|2019-04-24|
    JP2017093287A|2017-05-25|
    CN106936269A|2017-07-07|
    CN106936269B|2020-11-17|
    GB2544887A|2017-05-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    优先权:
    申请号 | 申请日 | 专利标题
    US14/940,498|US9680344B2|2015-11-13|2015-11-13|Multiphase electrical machine and method of use|
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