CN2201752Y - Multi-phase positive pulse speed variable motor - Google Patents
Multi-phase positive pulse speed variable motor Download PDFInfo
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- CN2201752Y CN2201752Y CN 94220670 CN94220670U CN2201752Y CN 2201752 Y CN2201752 Y CN 2201752Y CN 94220670 CN94220670 CN 94220670 CN 94220670 U CN94220670 U CN 94220670U CN 2201752 Y CN2201752 Y CN 2201752Y
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Abstract
The utility model provides a multi-phase positive pulse speed variable motor which is composed of a motor body, a main circuit, and a control circuit, wherein, the motor body is composed of a base, a double-stator iron core, a positive excitation winding, a double-rotor iron core, a rotating shaft, and a differential excitation winding. AC a DC power supply passes through the electronic switch of the main circuit and becomes a positive pulse to provide power supply for a motor armature winding. The functions of the control circuit can be realized by an electronic trigger circuit which is composed of a rotor position detector, a phase shifter, etc. The utility model only uses the simple phase shifter or a chopper and cancels an inverter, the operation is more reliable. The multi-phase positive pulse speed variable motor can be widely used in the industrial field of machine tools, paper making, blower fans, and water pumps which need stepless speed-changing electric-power drive.
Description
Heterogeneous positive pulse varying speed motor described in the utility model is a kind of have heterogeneous positive pulse, its frequency, amplitude, the equal scalable of width and continuously variable, is applicable to the novel positive pulse motor of two kinds of power supplys of AC and DC.
At present in this technical field extensive use be two kinds of motor; A kind of is brushless DC motor, and another kind is the controllable silicon commutatorless motor.Brushless DC motor has advantages such as wide speed ratio, long-life, dominance energy, no-spark, low noise in above-mentioned two kinds of motor, but also exists many shortcomings; With the transistor brushless DC motor is example, and its armature winding has only 25%～33% utilance or current-carrying rate, and volume is big, efficient is on the low side.For the controllable silicon commutatorless motor, though have advantages such as wide speed ratio, large, medium and small power adaptability is strong, the life-span is long; But exist the main circuit complexity, cost an arm and a leg, also need introduction to close problems such as inverter circuit by force.Carry out new design at existing problem in the prior art, it is very necessary developing a kind of novel heterogeneous positive pulse varying speed motor simple in structure.
In view of existing problem in the above-mentioned prior art, the purpose of this utility model provides that a kind of wide speed ratio, long-life, dominance energy, no-spark, low noise, volume are little, current-carrying rate height, simple, the cheap novel heterogeneous positive pulse varying speed motor of circuit.Varying speed motor described in the utility model cancellation inverter circuit, adopt cheap phase shifter or the chopper that reliably, only constitutes by controllable silicon; Thereby applicable to novel heterogeneous positive pulse varying speed motor by the power supply of any power sources such as direct current, single phase alternating current (A.C.), three-phase alternating current, intermediate frequency.
Heterogeneous positive pulse variable speed electric motors, particularly described in the utility model is moving, and its structure is made up of motor body, main circuit and control circuit.The motor body by support, stator core, just encourage winding, rotor core, rotating shaft, differential excition winding and formed.Control circuit is the electronics circuits for triggering that are made of rotor position detector, phase shifter; Main circuit is two kinds of polyphase chopper and heterogeneous phase shifters.Stator core described in the utility model and rotor core are divided into single stator core, two stator core and single rotor iron core, birotor iron core.When being two stator cores and birotor iron core, can be loaded on altogether in the single support.The rotor of motor described in the utility model has four kinds of different structures: promptly permanent magnetism salient pole type birotor is coaxial; Permanent magnetism salient pole type single rotor; His exciting field winding salient pole type birotor is coaxial; His exciting field winding salient pole type single rotor.The two stator cores that are loaded in the same support described in the utility model adopt salient pole type, are embedded with the polyphase armature winding in the wire casing of iron core, particularly have positive and negative both direction excitation double winding.And get differential excition winding number of ampere turns and equal just to encourage winding number of ampere turns 5 percent; Promptly
=5%AW.Rotor core adopts permanent magnetism salient pole type birotor coaxial, and multiple mode power electronic switching is loaded in the main circuit.Use heterogeneous phase shifter when using polyphase chopper, Alternating Current Power Supply during direct current supply; Control circuit promptly is complementary by electronics circuits for triggering and the main circuit that transposition detector, phase shifter etc. constitute, thereby obtain three-phase 1～2 pulsed, the six double-stator permanent magnet varying speed motor of 3～4 pulseds, four phases, 2～3 pulseds mutually, the current-carrying rate of its armature winding is K
i=50%～62.5%.Described in the utility modelly adopt single iron core in the support of motor, its structure is salient pole type or hidden pole type; Be embedded with the polyphase armature winding in the wire casing of iron core, this winding is the double winding of positive and negative both direction exciting field, and gets and just encourage the winding number of ampere turns and equal differential excition winding number of ampere turns, i.e. AW=
Rotor core adopts permanent magnetism salient pole type single rotor.Main circuit is polyphase chopper or heterogeneous phase shifter.Control circuit promptly is complementary by electronics circuits for triggering and the main circuit that transposition detector, phase shifter etc. constitute.Thereby obtain four phases, 2 pulseds, six single stator permanent magnet varying speed motor of 3 pulseds, eight phases, 4 pulseds mutually, its armature winding current-carrying rate is K
i=50%.Has the electric brush slip ring structure above the electromagnetic type rotor in his exciting field winding described in the utility model.
The utility model provides a kind of heterogeneous positive pulse varying speed motor; Its structure essence is the change of modern brushless DC motor, it all has the different of matter with traditional commutator direct current machine, asynchronous machine, synchronous machine, what flow through in the latter's the armature winding is single-phase or three-phase alternating current, and what for example flow through in the direct current machine armature winding is interchange through the commutator inversion.But what flow through in this motor and the brushless DC motor then is unidirectional positive pulse, its frequency (referring to pulses per second) amplitude, width etc. can be regulated, in conjunction with electric machine structure stator, rotor variation, choose the different numbers of phases and positive pulse number, according to the asymmetric magnetic pole of symmetry, single or two parallel garden shape rotating magnetic field principles, create novel dominance energy low price than varying speed motor, its essence is from the frequency modulation synchronous motor.
Characteristics of the present utility model are as follows:
(1) the utility model keeps the advantage of brushless DC motor, contains wide speed ratio, longly receives the order, dominance energy, no-spark, low noise etc.; Overcome its shortcoming, such as 3 transistor brushless DC motors, its armature winding has only 33.3% utilance or current-carrying rate, and 4 transistor brushless DC motors only have 25% current-carrying rate, so its volume is bigger, efficient is on the low side.
(2) the utility model keeps the advantage of controllable silicon commutatorless motor (a kind of from the frequency modulation synchronous motor), and wide speed ratio, large, medium and small power all are suitable for the long-life etc.; But its shortcoming is main circuit complexity, costliness, needs to introduce the strong inverter circuit etc. that closes.
(3) the utility model cancellation inverter circuit, and the phase shifter or the folding ripple device that adopt cheapness only to be made of controllable silicon (SCR or GTO) reliably can produce the heterogeneous positive pulse varying speed motor by any power source power supplies such as direct current, interchange list, three-phase, intermediate frequencies.
The utility model has 10 accompanying drawings, wherein:
Accompanying drawing 1 is the mechanical construction drawing of heterogeneous positive pulse varying speed motor
Accompanying drawing 2 is A-A cutaway views of accompanying drawing 1
Accompanying drawing 3 is B-B cutaway views of accompanying drawing 1
Accompanying drawing 4 is direct current supply varying speed motor main circuit diagrams
Accompanying drawing 5 is the two half-wave varying speed motor main circuit diagrams of three-phase
Accompanying drawing 6 is three-phase half controlled bridge varying speed motor main circuit diagrams
Accompanying drawing 7 is eight phases, 4 pulse varying speed motor main circuit diagrams
Accompanying drawing 8 is varying speed motor control circuit block diagrams
Accompanying drawing 9 is varying speed motor operation principle block diagrams
Accompanying drawing 10 is three-phase 1～2 pulse varying speed motor main circuit diagrams
In accompanying drawing 1～accompanying drawing 3:
1, support 2, stator core 3, just encourage winding
4, rotor position detector 5, rotor core 6, rotating shaft
7, differential excition winding
Each alphabetical connotation in accompanying drawing 4～accompanying drawing 7:
SCR
1～SCR
18---controllable silicon D
1～D
12---silicon diode
SR
1～SR
6---saturation reactance C
1～C
6---capacitor
C---electrolytic capacitor L---ribbon core inductance
W
1～W
8---just encouraging winding
～
---the differential excition winding
Each symbol connotation in accompanying drawing 8～accompanying drawing 10:
W---integrated regulator F
h---the high frequency square wave generator
T
r---rotor position detector L
b---transfer wide trigger
L
Ph---phase shift trigger G
c---control circuit
M
c---main circuit
SCR～GTR---controllable silicon or power transistor group
E
=---DC power supply U
～---AC power
P
e(u.i)---input electric power Es---electronic switch
BD---varying speed motor f(n.m)---output mechanical power
SB---switch-box MB---motor body
K---knife switch T
1～T
3---transistor
Specific embodiment of the utility model as shown in drawings, its structure by (1) mechanical structure, (2) main circuit, (3) control circuit three parts through and become: (1) part is seen accompanying drawing 1 electric motor structure figure.(2) and (3) part attaches together in a common switch-box SB sees accompanying drawing 9, describes respectively below:
(1) mechanical structure
The mechanical structure of heterogeneous positive pulse p-m rotor varying speed motor is seen accompanying drawing 1, it mainly by support 1, salient pole type radially, two stator cores 2 of axial split field structure, just encourage winding 3, rotor position detector 4, permanent magnetism field spider 5 and rotating shaft 6 and formed.The axial-radial split pole differential magnetic pole type knot A-A and the B-B cutaway view of this motor in accompanying drawing 2 and accompanying drawing 3, have been provided.The rotor of being not difficult to find out this motor is the permanent magnetism salient pole, radially is split into 4 magnetic poles, arranges according to NSNS polarity, and axial split is two sections, and promptly 2 rotor cores are coaxial; Stator core is six phase windings of 12 differential magnetic poles, and the left side iron core is the S utmost point of removable polarity, and the right side iron core is the N utmost point of removable polarity, is wound with 2 windings on the little salient pole of each differential: just encouraging winding 3, representing its ampere-turn with AW; Differential excition winding 7, with
Represent its number of ampere turns, the latter's number of ampere turns absolute value
Be taken as the former 5%～100%, look motor working condition and different.
(2) main circuit
Varying speed motor shown in accompanying drawing 1～accompanying drawing 3, its rotor with salient pole are that permanent magnetism magnetic pole is invariable, are taken as 2p=4, and double-iron core salient stator number of poles respectively is 12 little magnetic poles of differential, introduces different main circuit connection methods, can get three-phase 1～2 pulse or six 3～4 pulses mutually.Above-mentioned variable speed electric motors, particularly main circuit has various ways because of AC and DC power supply difference, but mainly contains two kinds: promptly DC power supply is with chopper and alternating current phase shifter.For six mutually 3～4 pulse variable speed electric motors, particularlies its main circuit when the direct current supply see accompanying drawing 4, be suitable for storage battery or other constant-voltage DC sources, it forms six phase Fixed width frequency modulation choppers by 6 controllable silicons, the modified model that every phase chopper is the typical case not hilllock is formed by turn-offing capacitor C, saturable reactor SR and controllable silicon SCR from breaking circuit.When ac power supply, see accompanying drawing 5 and accompanying drawing 6, accompanying drawing 5 is suitable for two half-waves of less demanding minimum controllable silicon number from turn-offing the transposition depressor, accompanying drawing 6 is the typical half control bridge phase shifter of three-phase alternating-current supply power supply, have from turn-offing the phase-shift voltage regulating ability, but use the controllable silicon number more, need 6 * 3=18 SCR.
In accompanying drawing 4 and accompanying drawing 5, coil W
1, W
2, W
3, W
4, W
5, W
6For just encouraging armature winding, be used for setting up the N in the accompanying drawing 3
1, N
2, N
3, N
4, N
5, N
6All same polarity differential rotary poles; Coil
Be differential excition armature winding, be used for offsetting remanent magnetism, realize the Fast transforms pole polarity.For two stators, birotor core structure, will set up 2 parallel two gardens ring-type rotating magnetic fields of asymmetric magnetic pole,
～
Number of ampere turns in the coil
Generally get W
1～W
6Ampere-turn A in the coil
w5%～10% permitted.For single stator, single rotor core structure, will set up symmetrical magnetic pole list garden ring-type rotating magnetic field, generally get
=AW.
(3) control circuit
Control circuit can be illustrated by accompanying drawing 8 block diagrams, and this control circuit has mechanically geometric position mensuration and control action, any instantaneous, and rotor position detector T
rDetect magnetic axis position, rotor field, be transformed into the broad pulse sequence of one group of correspondence, it is by stabilized voltage power supply W(integrated circuit package), high frequency square wave generator F
h(double-triode valve magnetocrystalline oscillator) rotor position detector T
rForm; On electric main circuit is carried out phase place, width, amplitude or the frequency number control of positive pulse again, it is by stabilized voltage power supply W, phase shift trigger L
Ph(single-transistor or triode circuit form) or transfer wide trigger L
b(transistor circuit) formed.The two is through AND circuit G
cWith transposition signal and main circuit potential pulse amplitude or the stack of width signal, remove to control the main circuit M of controllable silicon or large power triode formation
CThe latter encourages the armature winding of variable speed electric motors, particularly stator, guarantees that certain drives angle δ in the rotor magnetic axis before any instantaneous stator magnet spindle guide.Rotor position detector T
rVarious ways is arranged: photoelectric type, electromagnetic type, Hall element formula, near switching regulator and miniature half garden ring type etc., the present invention mainly uses miniature half garden ring type and electromagnetic type.
(4) operation principle
The operation principle of this varying speed motor can illustrate by accompanying drawing 9 that this motor contains the motivation rotor by motor body MB and transposition detector Machinery Ministry grades and switch-box SB contains partly composition of control circuit, main circuit, power electronic element and miniature electronic part etc. two.
The input power supply is with electrical power P e(u.i) form electric energy is put on the stator armature side of variable speed electric motors, particularly, light puts on main circuit Mc and control circuit Cc through K switch with supply voltage, no matter be that interchange or direct current all are transformed into frequency by transformation, the positive pulse of width or adjustable amplitude value, according to the load difference, the needs of rotation speed n and torque M on the output shaft, the positive pulse of certain intensity is comprehensive through AND circuit by Electronic Control, switching amplifier amplifies, remove to light power electronic element controllable silicon SCR or transistor GTR in the main circuit, for example 3～4 pulses are alternately with certain program for positive pulse.That is: SCR
1.2.3→ SCR
1.2.3.4→ SCR
2.3.4→ SCR
2.3.4.5→ SCR
3.4.5→ SCR
3.4.5.6→ SCR
4.5.6→
Here the endnote Arabic numerals in the SCR lower right corner are represented the controllable silicon numbering number of conducting.
Feed 6 groups of two stator armature winding W in the accompanying drawing 6
1～W
6With
～
The part winding in, this just forms 2 parallel ring rotation magnetic fields, garden that are positioned in two rotor spaces.Because transposition detector T
rControl action, by feeding any instantaneous leading of stator field magnetic axis that positive pulse sets up in the armature winding in certain δ angle of rotor field magnetic axis.The controlled T that is decided by in δ angle
rThe width of induction half garden ring is generally got δ ∈ ［ 90 °～120 ° ］ on rotor.So this motor can be realized input electric power Pe(u i) is transformed into rotation speed n, all level and smooth adjustable mechanical power P of torque M
j(n, m).This is a kind of from the frequency modulation synchronous motor in fact, radially divides the magnetic field except that being provided with, and introduces axial split magnetic field again, and this is in order to improve the current-carrying rate K of armature winding under the positive pulse condition of power supply
iAnd flux path, K here
iThe total number of phases of=conductive winding number of phases/winding.When this variable speed electric motors, particularly is several 3 transistors of least power electronic switch (being 3GTR) or 3SCR at main circuit, desirable 1～2 pulse, K at this moment
i=50%; When main circuit is 6GTR, desirable 3～4 pulses, K at this moment
i=58%; When stator core has 16 little magnetic poles of differential, allow the main circuit that uses 4GTR, desirable 2～3 pulses, K at this moment
i=62.5%.
This varying speed motor has kept whole advantages of brushless DC motor, is 25%～33% lower shortcoming but overcome its armature winding current-carrying rate.
In order further to simplify electric machine structure, allow two stators, the coaxial cancellation axial split of birotor iron core magnetic pole, change single stator, single rotor into.But winding current-carrying rate will be kept K this moment
i=50%=constant, and should get and just encourage the winding number of ampere turns and be constantly equal to differential excition winding number of ampere turns, promptly
=AW, the conducting modification of program of each phase of main circuit is four 2 pulses mutually, six 3 pulses mutually, eight 4 pulses mutually, it is its main circuit that these eight phases, 4 pulse varying speed motors adopt accompanying drawing 7.This is that a kind of new range dominance can heterogeneous positive pulse permanent-magnet variable-speed motor.
Another kind of version of the present utility model is heterogeneous positive pulse separate excitation varying speed motor.This varying speed motor belongs to the modification of aforementioned heterogeneous positive pulse permanent-magnet variable-speed motor, only slightly different on generation of the magnetic of rotor magnetic pole and the mechanical structure with the permanent-magnet variable-speed motor, the rotor magnetic pole of this motor adopts the adjustable direct current winding separated exciting of electromagnet structure, sets up 2 his exciting field winding leads terminals through wiper mechanism and on the motor stator outlet box at 2 slip rings of increase on the rotor and constitutes.
The rotor magnetic pole majority of this varying speed motor still adopts salient pole type, changes hidden pole type in case of necessity into.Except that above-mentioned difference, the mechanical structure of all the other each several parts, main circuit, control circuit, operation principle are all same or similar.But this varying speed motor is many ones degree of freedom on speed regulating control, and many field circuits can carry out the level and smooth variable field control of separate excitation.
This motor is that minimum main electronic power switch is counted varying speed motor.
(1) electric machine structure
The longitudinal and transverse section of this motor is seen accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, be not difficult to find out: stator has 2 iron cores, 12 differential magnetic poles are arranged on each iron core, take into account axial split magnetic field, have 12 * 2=24 main pole, all be wound with just encouraging and two coils of differential excition of different lower right corner numbering on each differential magnetic pole, get
=5%AW; Rotor structure is that 2 p-m rotor iron cores of 4 utmost point formulas are coaxial.
(2) main circuit
Get 16 coils of each 4 pairs of magnetic pole of the stator and connect successively, constitute a phase armature winding.4W for example
1+ 4W
2+
+
=W
1.2+
, by 1 high power transistor T
1Accompanying drawing 10 is seen in power supply.This main circuit by 3 transistors form the three-phase that can also form with 3 controllable silicons the ridge chopper substitute.
48 coil branches of this pair of stator core are connected into W
1.2+
W
3.4+
W
5.6+
Three groups of armature winding are by three transistor Ts
1T
2T
3Power supply, its conducting program is got 1-2 pulse alternative expression, that is:
T
1→T
1.2→T
2→T
2.3→T
3→T
3.1→……
(3) control circuit
The electronics circuits for triggering of formations such as this motor apolegamy rotor position detector, phase shifter are seen accompanying drawing 8.
(1) electric machine structure
This electric machine structure is left out two stator cores referring to accompanying drawing 1, and the axial split magnetic pole that the birotor iron core is coaxial is reduced to single stator core, the single rotor iron core; Stator core is that salient pole type has 12 differential magnetic poles, is wound with on each magnetic pole just to encourage and 2 coils of differential excition, gets
=AW; Rotor core is 4 polar permanent magnetic rotors.
(2) main circuit
Get 4 coils of per 2 stator differential magnetic poles and connect successively, constitute phase armature winding, that is: a 2W
1+
=W
1+
2W
2+
=W
2+
2W
3+
=W
3+
2W
4+
=W
4+
2W
5+
=W
5+
2W
6+
=W
6+
By 6 groups of three-phase controllable silicon half control bridge power supplies, see accompanying drawing 6 respectively.Its controllable silicon conducting program is got 3 pulses and is replaced repetition formula, that is: SCR
1.2.3+ SCR
4.5.6+ SCR
7.8.9→ SCR
4.5.6+ SCR
7.8.9+ SCR
10.11.12→ SCR
7.8.9+ SCR
10.11.12+SCR
13.14.15→ SCR
10.11.12+ SCR
13.14.15+ SCR
16.17.18→ SCR
13.14.15+ SCR
16.17.18+ SCR
1.2.3→ SCR
16.17.18+ SCR
1.2.3+ SCR
4.5.6→
(3) control circuit
The electronics circuits for triggering of formations such as this motor apolegamy rotor position detector, phase shifter are seen accompanying drawing 8.
Claims (6)
1, a kind of heterogeneous mutual pulse varying speed motor; Formed by motor body, main circuit and control circuit; It is characterized in that the motor body by support (1), stator core (2), just encourage winding (3), rotor core (5), rotating shaft (6), differential excition winding (7) and formed; Control circuit is the electronics circuits for triggering that are made of rotor position detector, phase shifter etc.; Main circuit is two kinds of polyphase chopper and heterogeneous phase shifters.
2, heterogeneous positive pulse varying speed motor according to claim 1; It is characterized in that stator core (2) and rotor core (5) are divided into single stator core, two stator core and single rotor iron core, birotor iron core; When being two stator cores and birotor iron core, can be loaded on altogether in the single support (1).
3, heterogeneous positive pulse varying speed motor according to claim 1; The rotor that it is characterized in that motor has four kinds of different structures; Be that permanent magnetism salient pole type birotor is coaxial; Permanent magnetism salient pole type single rotor; His exciting field winding salient pole type birotor is coaxial; His exciting field winding salient pole type single rotor.
4, heterogeneous positive pulse varying speed motor according to claim 1 and 2; It is characterized in that being loaded on the two stator cores in the same support (1), adopt salient pole type, be embedded with the polyphase armature winding in the wire casing of iron core, particularly have the double winding of positive and negative both direction excitation; And get differential excition winding number of ampere turns and equal just to encourage winding number of ampere turns 5 percent, promptly
=5%AW; Rotor core adopts permanent magnetism salient pole type birotor coaxial, and multiple mode power electronic switching is installed in the main circuit; Use heterogeneous phase shifter when using polyphase chopper, Alternating Current Power Supply during direct current supply; Control circuit promptly is complementary by electronics circuits for triggering and the main circuit that transposition detector, phase shifter etc. constitute, thereby obtain three-phase 1～2 pulsed, the six double-stator permanent magnet varying speed motor of 3～4 pulseds, four phases, 2～3 pulseds mutually, the current-carrying rate of its armature winding is K
1=50%～62.5%.
5, heterogeneous positive pulse varying speed motor according to claim 1 and 2; It is characterized in that adopting single iron core in the support (1) at motor, its structure is salient pole type or hidden pole type; Be embedded with the polyphase armature winding in the wire casing of iron core, this winding is the double winding of positive and negative both direction excitation, and gets and just encourage the winding number of ampere turns and equal differential excition winding number of ampere turns, i.e. AW=
Rotor core adopts permanent magnetism salient pole type single rotor; Main circuit is polyphase chopper or heterogeneous phase shifter; Control circuit promptly is complementary by electronics circuits for triggering and the main circuit that transposition detector, phase shifter etc. constitute; Thereby obtain four phases, 2 pulseds, six single stator permanent magnet varying speed motor of 3 pulseds, eight phases, 4 pulseds mutually, its armature winding current-carrying rate is K
i=50%.
6, according to claim 1 or 3 described heterogeneous positive pulse varying speed motors; It is characterized in that having the electric brush slip ring structure above the electromagnetic type rotor in his the exciting field winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94220670 CN2201752Y (en) | 1994-09-09 | 1994-09-09 | Multi-phase positive pulse speed variable motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94220670 CN2201752Y (en) | 1994-09-09 | 1994-09-09 | Multi-phase positive pulse speed variable motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2201752Y true CN2201752Y (en) | 1995-06-21 |
Family
ID=33835202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94220670 Expired - Fee Related CN2201752Y (en) | 1994-09-09 | 1994-09-09 | Multi-phase positive pulse speed variable motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2201752Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010081299A1 (en) * | 2008-12-30 | 2010-07-22 | Guo Jianguo | Pulse direct current generator device |
| CN111756173A (en) * | 2019-03-29 | 2020-10-09 | 湖南中车时代电动汽车股份有限公司 | Double-winding six-phase motor |
-
1994
- 1994-09-09 CN CN 94220670 patent/CN2201752Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010081299A1 (en) * | 2008-12-30 | 2010-07-22 | Guo Jianguo | Pulse direct current generator device |
| CN111756173A (en) * | 2019-03-29 | 2020-10-09 | 湖南中车时代电动汽车股份有限公司 | Double-winding six-phase motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |