• 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 electrical engineering, in particular to motors with non-contact switching, designed to operate in an electric drive with speed feedback. The aim of the invention is to reduce the size. The electric motor is equipped with a tachogenerator (TG) with a rotor 14 mounted on the motor shaft 1 and
    公开号:SU1419531A3
    申请号:SU853876207
    申请日:1985-04-10
    公开日:1988-08-23
    发明作者:Тассинарио Джампиеро
    申请人:Мавилор Систем С.А. (Фирма)；
    IPC主号:
    专利说明:

    WITH
    QD SL
    with

    CH
    carrying permanent magnets 12, and a fixed crust 15, equipped with a crust winding 17. The switching of the winding 17 of the core of the TG and the engine is carried out by electronic switching devices controlled by the rotor position sensor. The rotor 14 TG is made in the form of a disk, and the magnetic axis of the magnets 19 is parallel to the shaft 1. Movable
    A part of the rotor position sensor is made in the form of the rotor 14 of the TG itself, interacting with a system of stationary magnetic sensors 16, preferably Hall elements. The sensor system 16 is installed on one side of the rotor 14 TG, and the still measles 15 - on the other side of the rotor 14. 4 Cp. f-ly, GZ Il.
    one
    The invention relates to electrical engineering, in particular, to motors with contactless switching, valve electric motors (HP), designed to operate in an electric drive with speed feedback and equipped with a tacho-generator.
    The aim of the invention is to reduce the size of the valve electric motor and simplify its design.
    FIG. 1 shows a valve motor, a general view in axial section; n FIG. 2 - the same, view from the side of the magnetically sensitive elements; in fig. 3 is a view A of FIG. 2; 4 shows the arrangement of the winding of the core of a four-phase tachometer generator; in fig. 5 is an electrical circuit for winding the core of a four-phase tachometer generator with each other with switches; in fig. 6 is a schematic view of induction from a pair of owls N and S of the generator rotor with the arrangement of magnetic sensors; signals from elements 27.1-27.4 from the output of the magnetically sensitive elements as a function of the angle of rotation of the rotor; the signals for the switch 26.1-26.4, which control the switching of the main windings of the tachometer generator and the signals 29.1-29.8, which control the switching of the main windings of the engine; 7 - EMF induced in the phases of the winding of the generator in FIG. five; in fig. 8 is an electrical circuit of the power section of a two-phase tachometer generator; in fig. 9 is a diagram of the winding of the core of a two-phase tachometer generator; in fig. Yu - EMF, induktiro
    five

    , five
    0
    baths at the terminals of the windings of a two-phase tachometer generator; in fig. 11 - a rotor formed by an annular magnet and two disks, view c. plan; in fig. 12 - section A-Afig.1I; in fig. 13 is a block diagram of a device controlling the switches of the engine and tachometer generator from the rotor position sensor.
    FIG. Figure 1 shows a motor and a tachometer generator, functionally and structurally combined with a rotor position sensor, located on the same shaft 1. The rotor of the motor body is equipped with four pairs of poles, and a multiphase winding is located on its core. Its stator consists of two halves, symmetrically located on each side of the disc-shaped rotor 2, each of these semi-switches consisting of aluminum flanges 3.1 and 3.2 and cores 4.1 and 4.2 attached to the inner side of flanges 3.1 and 3.2, respectively. Both flanges are connected by a ring 5, forming a box. The armature consists of annular magnetic cores 6.1 and 6.2 and windings 7.1 and 7.2, with both elements of the winding embedded in plastic 8.1 and 8.2, as well as coaxially embedded into the inner space between these two elements of connecting rings 9.1 and 9.2, partially embedded in plastic, peripheral the zone of which is itself recessed in plastic 8.1, 8.2. The measles thus formed constitute a compact piece. Packages of magnetic circuits 6.1 and 6.2 are made in the form of a spiral of magnetic tape, and the root winding is located opposite the rotor 2.
    3ta
    The connecting rings 9. 1 and 9.2 are divided into a plurality of segments isolated from one another, with the main windings 7.1 and 7.2 connected to the ends. Electrical conductors 10.1 and 10.2 connect segments to connect | rings 9.1 and 9.2, respectively, with electronic switching schemes and pass through channels 11. 1 and 11.2, which are parallel to the motor axis in flanges 3.1 and 3.2, respectively. These circuits are controlled by a rotor position sensor. The winding of the core consists of thirty two coils, forming four phases, controlled by the first electronic switching device. Each of the core windings 7.1 and 7.2 is in the form of an overlapping winding, as in conventional DC motors.
    The disc rotor 2 consists of a body 12 of synthetic resin, inside which there is a thickening forming the core. In case 12, eight permanent magnets 13 are in the form of an annular segment, each is embedded, for example, in a carbon fiber bracket with appropriately shaped sockets, all of which are embedded in a synthetic resin and thus the rotor is made integral with the core fixed on the shaft 1 engine The rest of the design of the rotor 2 is similar to the design of the rotor 14 tachometer generator.
    The tachometer generator contains a rotor 14. in the form of a disk mounted on the shaft 1 of the engine, the rotation frequency of which is to be measured, C one
    On the no-side of this rotor is the bark 15, mounted on the inside of the stator flange 16, and on the other side of the rotor 14 a system of stationary magnetically sensitive elements 16 is installed.
    The anchor 15 consists of the core winding 17 of the second ring core 18, both of which are recessed in plastic. Bark 15 thus formed is a compact piece. The second ring core 18 is formed by winding from a magnetic strip, forming a ring-shaped package, and the root winding 17 is located opposite the rotor 14.
    Electrical conductors (not shown) bring the ends of the core winding 17 out to the second electronic circuit.

    ABOUT
    d

    Q
    five
    five
    :and
    re; ; 1K1. The device is I py, which is controlled by a rotor position sensor, the signal elements of which are the rotor 14 itself, which is modeled with the magnetic elements 16.
    The rotor 14 has the shape of a flat disk, located on the cylinder 1 of the engine, and consists of a body made of singe resin, inside of which there is a thickening forming the core. Eight permanent magnets 19 (Fig. 1) in the form of an annular segment are embedded in the housing, which are embedded, for example, in a carbon fiber bracket with appropriately shaped sockets, all of which are recessed in a synthetic resin and thus the rotor is integral with the core mounted on the shaft I of the engine. The magnetic axis of the permanent magnets 19 is parallel to the shaft I and, therefore, these magnets create magnetic fields parallel to the shaft. The thickness of the permanent magnets 19, the working surfaces of the poles of which are free from each side, is approximately the same as the thickness of the zone of synthetic material that surrounds them. The permanent magnets 19 are evenly distributed around the periphery of the rotor 14 and arranged so that on each side of the rotor the working surfaces of the poles, following each other around the circumference, form an alternating polarity and, thus, on each side of the rotor there are evenly distributed four pairs regiment / ow.
    The magnetically sensitive elements 16, which in this example are Hall elements, are pressed into the holes 20 of the insulating plate 21 glued onto the flat side of the first ring core 22 coaxial to the rotor axis 14 and fixed on the stator flange 23.1. The ring core 22 is preferably made of magnetic a strip sheet forming a ring-shaped packet, as the core core 18, for closing magnetic fields. Two flanges 23.1 and 23.2 are connected by a ring 24.
    The winding 17 of the generator is formed by four windings 25.1-25.4, connected by a star (Fig. 5). FIG. i schematically shows the relative arrangement of four windings, each of which consists of connected
    four separate coils in series. Angle 0 is equal to 90 ° and corresponds to the electric cycle, i.e. electric angle 360, since there are four pairs of poles on the rotor
    The windings 25.1, 25.3 and 25.2, 25.4 are superimposed on each other, but wound in the opposite direction and, thus, the voltages induced in the windings have an opposite sign corresponding to a phase shift of the electric angle. Both groups of windings are shifted by 90 el. hail, i.e. at a geometrical angle of 22.5, with one pair of magnetic poles occupying a geometrical angle of 90. The voltages induced in the windings 25.2-25.4 are fed to the output of the tachogenerator (Fig; 5, points + and N) by sequentially placing it on the geometric arc 33.75 Four Hall elements 27.1-27.4, their location
    body switching switches 26.1-26.4.
    FIG. 6 schematically shows one pair of poles and the position of four 25 is shown as indicated in FIG. 4. The fourth magnetically sensitive elements 27.1. 27.4 element 27.4 is located at 27.4, for example, Hall elements. Four sensors are mounted on the stator surface facing the rotor (Fig. 1). The angular distance between two adjacent elements must
    thirty
    33.75 from the first, second 27.2 - to 101 ,, which corresponds, therefore, to the placement of the second pair of poles at an angle of 11.25. The third element 27. is located 77.5 from the first one and is excited by the passage of a pole of a pair of poles and for this reason the signal supplied by this element is inverted before use 35. This arrangement of the four elements is one of several possible arrangements and depends on the size of the tachogenerator.
    be equal to the electric angle 45, i.e. heoMeTpH4ecKOMy corner 11.25,
    Signals from Hall elements 27.1-27.4 are shown under two poles when passing poles from one pair of poles in front of them. The four signals controlling the switches of the switches 26.1-26.4 are derived only from the signals supplied by elements 27.1 and 27.3, since four switches must be controlled by the electric cycle and the signals from elements 27.1, 27.3 being
    shifted in phase by a quarter of the 45 windings by means of eight switching cycles 90 el.grad. and preservatives 31.1-31.4, 32.-32.4 receive
    and
    the constant value for the length of one half-cycle 180 e. hail, thus allowing to generate four signals for switches (26.1-26.4) controlling the switching of the windings of the generator clock during the I-IV intervals (Fig. 6), each of which is equal to the electrical angle 90. Induced: voltages 28.1-28.4 (Fig. 7) in the windings 25.1-25.4 have a constant value, each in the range of 90 el. hail. When the tachogenerator is connected to the eight pole
    at the output terminals + and - of the generator, four induced voltages corresponding to the voltages
    5Q tachogenerator, the winding of which consists of four windings connected by a star.
    The advantage of the core with two windings (Fig. 8) is that
    55 that each winding 33.1 and 33.2 has more turns than each winding 25.1-25.4, which allows to increase the magnitude of the corresponding induced voltages.
    In this case, these eight signals 29.1-29.8 are generated by processing four signals from elements 27.2-27.4.
    FIG. Figure 13 shows a block diagram of the device controlling the switching of the windings of the engine and tachogenerator cores from the rotor position sensor. The signals given by Hall elements 27.1-27.4 are transmitted to two electronic switching devices 30 and 3, the first of which generates switching signals of switches 26.1-26.4 of the generator clock, and the second generates signals of switching switches 29.1-29.8 of the engine core, provided that the terminals of the engine of the tachogenerator are compatible.
    Since it is difficult to place four Hall elements 27.1-27.4 on the geometric arc 33.75, they are arranged as indicated in FIG. 4. The fourth element 27.4 is located on
    as indicated in FIG. 4. The fourth element 27.4 is located on
    33.75 from the first, second 27.2 - to 101 ,, which corresponds, therefore, to the placement of the second pair of poles at an angle of 11.25. The third element 27.3 is located 77.5 from the first and. is excited by the passage of a pole of a pair of poles, and for this reason the signal supplied by this element is inverted before use. This arrangement of the four elements is one of several possible arrangements and depends on the size of the tachogenerator.
    Another variant of the core winding of a two-winding tachometer generator is shown in FIG. 8. Controlled the switching of two terminals of each of
    windings by means of eight switches 31.1-31.4, 32.-32.4 receive
    and

    at the output terminals + and - of the generator, four induced voltages corresponding to the voltages
    tachogenerator, the winding of which consists of four windings connected by a star.
    The advantage of the core with two windings (Fig. 8) is that
    that each winding 33.1 and 33.2 has more turns than each winding 25.1-25.4, which allows an increase in the value of the corresponding induced voltages.
    714
    FIG. Figure 9 shows the relative position of the two windings 33.1 and 33.2, each of which consists of four separate coils connected in series, whose position corresponds to the position of the windings 25.1 and 25.3 box. The signals described in relation to FIG. 6 are the same for this core, with the only difference that the signal for the switch 26.1 controls the switching of the switches 31.1, 31.3; for switch 26.2, controls switches by switches 31.2, 31.4, and so on. FIG. 10 shows the induced voltages, indicated in the same way as the windings 33.1 and 33.2, and the reverse voltages in the same windings with the - sign, which are received at the + and - core terminals (Fig. 8), when the switches 31.2-31.4 and respectively, the switches 32.2, 32.4.
    FIG. 11 and 12 show an embodiment of the rotor in the form of an annular magnet 34, one side of which is the north pole and the other side is the south pole. On the north side there is a metal disk 35 with a diameter greater than the diameter of the ring magnet 34, while the peripheral edge of this disk, which has a 3 magnet, has equal notches 36. On the south side of the ring magnet 34 is placed a second metal disk 37 of the same size and the same shape as the first metal disk 35 and which also has equal notches 38 in its periphery, in number and in size corresponding to the cut-outs of the first disk 35. Both disks are mounted on the ring magnet 34 in such a way that each notch 36 - The first disk 35 is in the interval between two notches 38 of the second disk 37 without contact, and the teeth of both disks are in the same plane of symmetry with an annular magnet. Thus, a rotor is obtained whose periphery contains a sequence of notches 36, 38 with alternating polarity.
    权利要求:
    Claims (5)
    [1]
    1. A valve motor with a tachometer generator containing 95318
    A rotor mounted on the motor shaft, at least one located on the stator, fixed measles, on which the core winding is placed, the sections of which are connected to the output of the first electronic switching device, the control circuits of which are connected to the output of the motor rotor position , and a tachometer generator, the rotor of which is combined with the rotor of the position sensor of the rotor of the electric motor and mounted on the shaft of the electric motor, magnetically sensitive elements, mainly Hall elements, are located on one side of the rotor of the tachometer generator, and the fixed measles with the winding of the tachometer generator are located on the other side of the rotor, the number of poles of the rotor position sensor is equal to the number of pairs of poles of the electric motor,
    25 that, in order to reduce the size and simplify the design, the rotor of the position sensor is made in the form of a disk on which permanent magnets are installed, the magnetic axes of which are located parallel to the shaft, and the number of phases
    The motor winding is proportional to the number of phases of the main winding of the tachometer generator, which is connected to the second electronic switching device.
    [2]
    2. An electric motor according to claim 1, characterized in that it is provided with an insulating plate and an annular core mounted on
    0 stator flange coaxial to rotor, magnetically sensitive elements. embedded in an insulating plate glued to the surface of an annular core, made of spirally
    5 wound magnetic conductor tape with
    insulating yloy.
    [3]
    3. The electric motor according to claim 1, which is characterized by the fact that the root winding of the tachometer generator
    0 contains coils installed with
    overlapping, the engine is provided with a second ring core made of a spirally wound magnetic conductor tape with an insulating layer installed coaxially with the rotor axis, and the root winding of the tachometer generator is installed on the front side of the second ring core facing the rotor.
    [4]
    4. The motor according to claim 1, wherein the winding of the tachometric generator is made with a number of phases equal to two or four, the number of magnetically sensitive elements is four, the number of pairs of poles of the electric motor and tachometer generator is four, and the magnetic sensors -ten
    phases. 2
    L
    yy
    The ki are made with the possibility of forming a signal with a duration of 180 electrons.
    [5]
    5. An electric motor according to claim 4, characterized in that the magnetically sensitive elements are arranged along an arc of a size 101.25 geometric degrees.
    20
    21
    /
    t y /
    / /
    .21 20
    Fy
     -f
    27.1 27.2 27. 27. it
    0U2.6
    0iu. 70
    FIG. eight
    95
    36
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    引用文献:
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    JPS5688660A|1979-12-21|1981-07-18|Seiko Instr & Electronics Ltd|Flat coreless motor with tachometer generator built-in|
    US4360751A|1980-06-06|1982-11-23|Kollmorgen Technologies Corporation|Fan with integral disc-shaped drive|
    US4517480A|1980-07-09|1985-05-14|Papst Motoren Gmbh & Co, Kg|Tachogenerator for speed control of electric motors|
    DE3138323A1|1981-09-25|1983-04-14|Siemens AG, 1000 Berlin und 8000 München|Electric motor, especially a DC motor without a commutator|
    DE3230283C2|1982-08-14|1989-06-01|Indramat Gmbh, 8770 Lohr, De|DE3504681C2|1985-02-12|1988-10-13|Deutsche Forschungs- Und Versuchsanstalt Fuer Luft- Und Raumfahrt Ev, 5000 Koeln, De|
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    US5200660A|1988-05-16|1993-04-06|Heidelberg Goetz|Electric machine|
    US5111098A|1988-08-24|1992-05-05|Rockwell International Corporation|Unitary rotational speed sensor|
    US4916345A|1988-09-02|1990-04-10|Chrysler Motors Corporation|Flat stator winding for alternator starter|
    FR2644645B1|1989-03-20|1996-08-14|Areel|VARIABLE SPEED DEVICE FOR AN ELECTRIC MOTOR|
    US4988905A|1989-07-05|1991-01-29|Pitney Bowes Inc.|Integrated driver-encoder assembly for brushless motor|
    DE4120023C1|1991-06-18|1992-08-13|Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De|
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    EP2466731B1|2010-12-15|2013-06-12|Infranor Holding S.A.|Synchronous motor with permanent magnets|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH181384|1984-04-11|
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