CN206040508U - Non - symmetric winding motor operating mechanism of high voltage circuit breaker - Google Patents

Non - symmetric winding motor operating mechanism of high voltage circuit breaker Download PDF

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Publication number
CN206040508U
CN206040508U CN201620989625.XU CN201620989625U CN206040508U CN 206040508 U CN206040508 U CN 206040508U CN 201620989625 U CN201620989625 U CN 201620989625U CN 206040508 U CN206040508 U CN 206040508U
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China
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motor
main shaft
electric machine
module
power
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CN201620989625.XU
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郑尧
徐建源
韦宾
裴建林
刘大鹏
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Shenyang University of Technology
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Shenyang University of Technology
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Abstract

The utility model provides a non - symmetric winding motor operating mechanism of high voltage circuit breaker, including driving motor (1), drive mechanism (2) and machine controller (3), machine controller (3) are connected through shielding signal lines the one end of driving motor (1), the other end of driving motor (1) passes through flange dish (4) and connects drive mechanism (2), the utility model discloses improve circuit breaker operating mechanism in the follow principle, simplify the motion drive part in traditional operating mechanism for sole part rotary main shaft, greatly reduced operating mechanism spare part, improved the reliability of operating mechanism, according to the speed characteristic requirement of high voltage circuit breaker divide -shut brake action, adopt non - symmetric winding structure, make driving motor on motion performance with the load characteristic phase -match of circuit breaker. The efficiency of driving motor's work is improved, reduce the mechanical shock of operating mechanism, increased the life of circuit breaker.

Description

A kind of asymmetric winding electric machine operating mechanism of primary cut-out
Technical field
The utility model belongs to power transmission and transforming equipment technical field, and in particular to a kind of asymmetric winding electric machine of primary cut-out Operating mechanism.
Background technology
Primary cut-out is important electrical equipment in power system, and the reliability of its breaking-closing operating is transported to power grid security Row is significant.The breaking-closing operating of breaker is to drive moving contact to complete by its operating mechanism, and operating mechanism is to affect The principal element of breaker functional reliability.Breaker tradition operating mechanism mainly includes spring operating mechanism, hydraulic operating machine Structure, pneumatic operating mechanism and electromagnetic operating mechanism, above-mentioned operating mechanism have many parts, mechanical mechanism complexity and motion process Uncontrollable the shortcomings of, cause circuit-breaker switching on-off operation response time length, action dispersiveness big, so as to modern electric cannot be met System is to the intelligentized requirement of breaker operator.Therefore, it is necessary to study a kind of small volume, simple structure, parts it is few, motion The breaker operation mechanism of process control and reliable in action.
Utility model content
For the deficiencies in the prior art, the utility model proposes a kind of asymmetric winding electric machine actuating machine of primary cut-out Structure.
The technical solution of the utility model:
A kind of asymmetric winding electric machine operating mechanism of primary cut-out, including motor (1), transmission mechanism (2) and electricity Machine controller (3);
Described electric machine controller (3) connect the one end of motor (1), the motor by shielded signal line (1) the other end connects transmission mechanism (2) by ring flange (4);
Described motor (1) includes motor stator (11), rotor (12), electric machine main shaft (13) and spacing holding dress Put (14);
Motor (1) radially from inside to outside successively assemble electric machine main shaft (13), rotor (12) and Motor stator (11);Rotor (12) and spacing holding meanss (14) are assemblied on the electric machine main shaft (13), institute State spacing holding meanss (14) coaxial bonded with the electric machine main shaft (13), spacing holding meanss (14) are arranged at described The side that electric machine main shaft (13) is connected with transmission main shaft (22).
Described transmission mechanism (2) include multiple driving cranks (21) and transmission main shaft (22);The knot of each driving crank (21) Structure is identical, draws including main shaft connecting lever (211), driving spring (212), kinematic link (213), triangle connecting lever (214) and insulation Bar (215);
Each driving crank (21) are uniformly arranged on transmission main shaft (22), and described transmission main shaft (22) pass through ring flange (4) connect the electric machine main shaft (13) of motor (1), the one end of main shaft connecting lever (211) is described by flat key connection Transmission main shaft (22), the other end of main shaft connecting lever (211) are connected through the hinge the driving spring (212), the transmission The two ends of connecting rod (213) are connected through the hinge the driving spring (212) and the triangle connecting lever (214) respectively, the insulation The lower end of pull bar (215) is threadably secured triangle connecting lever (214), and the upper end of insulated tension pole (215) passes through screw thread Moving contact (51) in connection arc-extinguishing chamber of circuit breaker (5);
Described electric machine controller (3) include microprocessor unit (31), power module (32), signal acquisition module (33), Signal-regulated kinase (34), A/D modular converters (35), isolated drive circuit (36), boost module (37), IGBT module (38) and Communication module (39);
The output end of microprocessor unit (31) connects the input of isolated drive circuit (36), the isolation The output end of drive circuit (36) connects the input of boost module (37), the output end connection of boost module (37) The input of IGBT module (38), the output end of IGBT module (38) connect the driving electricity by shielded signal line The three-phase windings input of machine (1), the output end of signal acquisition module (33) connect Signal-regulated kinase (34) Input, the output end of Signal-regulated kinase (34) connect the input of A/D modular converters (35), and the A/D turns The output end of mold changing block (35) connects the input of microprocessor unit (31), and the power end of power module (32) connects Connect the power end of the microprocessor unit (31), the power end of signal acquisition module (33), the electricity of Signal-regulated kinase (34) Source, the power end of A/D modular converters (35), the power end of isolated drive circuit (36), the power end of boost module (37), The power end of the power end and communication module (39) of IGBT module (38), microprocessor unit (31) are by the communication mould Block (39) connects outer computer.
Alternatively, armature winding (111) is provided with motor stator (11), armature winding (111) are embedded in In the stator slot of motor stator (11), the stator slot of motor stator (11) adopts pyriform slot structure.
Alternatively, described rotor (12) include rotor body (121) and permanent magnet (122), the rotor body (121) T-slot of symmetrical structure is provided with, and permanent magnet (122) are alternate to be positioned in the T-slot of rotor body (121), Non-magnetic interval insulant (123) is provided between adjacent T-slot.
Alternatively, described armature winding (111) adopt asymmetric three-phase windings structure, and each permanent magnet pole three is corresponding Stator slot number be respectively 4,4,1.
Alternatively, described armature winding (111) cabling mode concentrates whole away from arrangement mode using individual layer.
Alternatively, described signal acquisition module (33) include that motor rotor position sensor (331), armature winding electric current are believed Number Acquisition Circuit (332) and Hall current sensor (333);
Motor rotor position sensor (331) are assemblied on the electric machine main shaft (13), with the electric machine main shaft (13) coaxial bonded, the input of armature winding current signal Acquisition Circuit (332) connects the Hall current sensing The output end of device (333), Hall current sensor (333) are arranged at the three-phase windings input of the motor (1) On.
The beneficial effects of the utility model:
The utility model proposes a kind of asymmetric winding electric machine operating mechanism of primary cut-out, from principle to conventional at present Breaker operation mechanism improved, the motion driver part in traditional operating mechanism is reduced to into the rotation of unique part Main shaft, considerably reduces operating mechanism parts, improves the reliability of operating mechanism;Breaker is grasped using electric rotating machine Motivation structure is driven, and fast response time, control accuracy are high;Speed of the utility model according to high-voltage circuit-breaker switching on-off action Characteristic requirements, using asymmetric winding construction, make motor match with the load characteristic of breaker on exercise performance.This The operating efficiency that structure improves motor is planted, the mechanical shock of operating mechanism is reduced, be increased the use longevity of breaker Life.
Description of the drawings
Fig. 1 is the asymmetric winding electric machine operating mechanism schematic diagram of the utility model specific embodiment mesohigh breaker;
Fig. 2 is motor overall structure diagram in the utility model specific embodiment;
Fig. 3 is motor profile in the utility model specific embodiment;
Fig. 4 is to be provided with the motor rotor body schematic diagram of T-slot in the utility model specific embodiment;
Fig. 5 be the utility model specific embodiment in 40.5kV vacuum circuit breaker closing operations when motor main shaft on Equivalent load reaction schematic diagram on motor main shaft when equivalent load counter-force and breaker open operation are operated;
Wherein, (a) be 40.5kV vacuum circuit breaker closing operations when motor main shaft on equivalent load reaction schematic diagram;
Equivalent load reaction schematic diagram on motor main shaft when () is breaker open operation operation b;
Fig. 6 is motor armature winding unsymmetric structure and conventional motors winding in the utility model specific embodiment Structural representation;
Wherein, (a) it is motor armature winding unsymmetric structure schematic diagram in the utility model specific embodiment;
B () is conventional motors winding construction schematic diagram;
Fig. 7 is the principle schematic of electric machine controller in the utility model specific embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model specific embodiment is described in detail.
Present embodiment by taking 40.5kV vacuum circuit breakers as an example, according to requirement of the arc-chutes to operating mechanism, using one kind The asymmetric winding electric machine operating mechanism of primary cut-out, as shown in figure 1, including motor 1, transmission mechanism 2 and motor control Device 3.
Electric machine controller 3 connects one end of motor 1 by shielded signal line, and the other end of motor 1 passes through method Blue disk 4 connects transmission mechanism 2.
As shown in Fig. 2 motor 1 includes motor stator 11, rotor 12, electric machine main shaft 13 and spacing holding meanss 14。
In present embodiment, as shown in figure 3, motor 1 is asymmetric winding permanent magnet brshless DC motor, motor 1 radially assembles electric machine main shaft 13, rotor 12 and motor stator 11 from inside to outside successively, rotor 12 and spacing Holding meanss 14 are assemblied on electric machine main shaft 13, and spacing holding meanss 14 are coaxial with electric machine main shaft 13 bonded, spacing holding Device 14 is arranged at the side that the electric machine main shaft 13 is connected with the transmission main shaft 22, it is ensured that motor 1 is moved to be had In limit corner.
In present embodiment, armature winding 111 in motor stator 11, is provided with, armature winding 111 is embedded in motor stator In 11 stator slot, the stator slot of motor stator 11 adopts pyriform slot structure, and the stator slot total number of motor stator 11 is 36. According to the load characteristic of breaker operation mechanism, armature winding 111 adopts asymmetric three-phase windings structure, each permanent magnet pole The corresponding stator slot number of three-phase is respectively 4,4,1.
111 cabling mode of armature winding concentrates whole away from arrangement mode using individual layer, both can guarantee that circuit-breaker switching on-off was operated Moving contact speed meets arc-chutes requirement, can make full use of motor material efficiency again, reduces mechanical collision, improves breaker actuation Reliability and service life.
In present embodiment, electric machine main shaft 14 is made from No. 10 steel forgings.
In present embodiment, motor stator 11 is formed by DW470 type silicon steel plate stackings,
In present embodiment, rotor 12 includes rotor body 121 and permanent magnet 122, as shown in figure 4, rotor body The T-slot of four symmetrical structures is provided with 121, and permanent magnet 122 is alternate to be positioned in the T-slot of rotor body 121, adjacent T Non-magnetic interval insulant 123 is provided between type groove, and the material of rotor body 121 is made using No. 10 steel forgings.
In present embodiment, four pieces of permanent magnets 122 are had, using the N40SH type neodymiums of high residual flux density and high-coercive force Iron boron material.
In present embodiment, during 40.5kV vacuum circuit breaker closing operations, on motor main shaft, equivalent load reaction is such as schemed Shown in 5 (a), when breaker open operation is operated on motor main shaft shown in equivalent load reaction such as Fig. 5 (b), can from Fig. 5 Go out, breaker carries out 64 ° of breaking-closing operating motor corner, load reaction saltus step in making process just occurs in motor Angle walk around for 36 ° (i.e. breaker firm conjunction), during separating brake load reaction saltus step occur in motor reversion corner be 28 ° (i.e. the firm timesharing of breaker is carved), peak load counter-force size are 310Nm, and before and after breaker is just closed, load reaction difference is larger. Therefore, the utility model makes load characteristic phase of the motor with breaker on exercise performance using asymmetric winding construction Match somebody with somebody.The operating efficiency of motor is such a construction increases, the mechanical shock of operating mechanism is reduced, making for breaker is increased Use the life-span.
In present embodiment, such as shown in Fig. 6 (a), the corresponding stator slot of each permanent magnet pole A-B-C (x-y-z) three-phase Number is respectively 4,4,1, such as shown in Fig. 6 (b), is that conventional ADS driving motor symmetric winding is distributed, A-B-C under each permanent magnet pole (x-y-z) the corresponding groove number of three-phase is 3,3,3.It will be appreciated from fig. 6 that corresponding to circuit-breaker switching on-off using asymmetric winding construction In motion process, as winding conductor total number of the asymmetric winding construction of 4-4-1 types in different angle ranges is different, make Motor 1 during circuit-breaker switching on-off have higher detent torque, it is ensured that moving contact firm timesharing pointer have compared with High movement velocity, reduces the mean speed of motor, reduces actuating in divide-shut brake latter stage by increasing conductor total number The mechanical shock of mechanism, improves the operating efficiency of motor.
In present embodiment, rotor 12 and electric machine main shaft 13 are made from No. 10 steel forgings, and rotor permanent magnet 12 is adopted N40SH type NdFeB materials, number of pole-pairs is 2.
Transmission mechanism 2 includes multiple driving cranks 21 and transmission main shaft 22;The structure of each driving crank 21 is identical, includes Main shaft connecting lever 211, driving spring 212, kinematic link 213, triangle connecting lever 214 and insulated tension pole 215.
Each driving crank 21 is uniformly arranged on transmission main shaft 22, and transmission main shaft 22 connects motor 1 by ring flange 4 Electric machine main shaft 13, one end of main shaft connecting lever 211 connects transmission main shaft 22 by flat key, and the other end of main shaft connecting lever 211 passes through Chain connection driving spring 212, the two ends of kinematic link 213 are connected through the hinge driving spring 212 and triangle connecting lever respectively 214, the lower end of insulated tension pole 215 is threadably secured triangle connecting lever 214, and the upper end of institute's insulated tension pole 215 is threaded connection Moving contact 51 in arc-extinguishing chamber of circuit breaker 5.By above-mentioned simple and mechanical connection, the rotation of electric machine main shaft 13 can directly drive breaker Moving contact 51 in arc-chutes 5 does the breaking-closing operating that linear motion completes breaker.
In present embodiment, as shown in fig. 7, electric machine controller 3 includes microprocessor unit 31, power module 32, signal Acquisition module 33, Signal-regulated kinase 34, A/D modular converters 35, isolated drive circuit 36, boost module 37, IGBT module 38 With communication module 39.
The output end of microprocessor unit 31 connects the input of isolated drive circuit 36, the output of isolated drive circuit 36 The input of end connection boost module 37, the output end of boost module 37 connect the input of IGBT module 38, IGBT module 38 Output end connect the three-phase windings input of motor 1 by shielded signal line, the output end of signal acquisition module 33 connects Meet the input of Signal-regulated kinase 34, the input of the output end connection A/D modular converters 35 of Signal-regulated kinase 34, A/D The output end of modular converter 35 connects the input of microprocessor unit 31, the power end connection microprocessor list of power module 32 The power end of unit 31, the power end of signal acquisition module 33, the power end of Signal-regulated kinase 34, the electricity of A/D modular converters 35 Source, the power end of isolated drive circuit 36, the power end of boost module 37, the power end of IGBT module 38 and communication module 39 Power end, microprocessor unit 31 connects outer computer by communication module 39, realize microprocessor unit 31 with it is outside The two-way communication of computer.
Signal acquisition module 33 includes motor rotor position sensor 331,332 and of armature winding current signal Acquisition Circuit Hall current sensor 333.
Motor rotor position sensor 331 is assemblied on electric machine main shaft 13, coaxial with electric machine main shaft 13 bonded, is supervised in real time The movement position of measured motor rotor 12.The input connection Hall current sensor of armature winding current signal Acquisition Circuit 332 333 output end, Hall current sensor 333 are arranged on the three-phase windings input of motor 1.
In present embodiment, model CHF-400B that Hall current sensor is adopted.
In present embodiment, microprocessor unit 31 is using the little Digital Signal Processing of fast operation, high precision, energy consumption Device DSP28335 is central processing unit.
32 input side of power module accesses 220V alternating-current voltage sources, through AC-DC conversion module, output ± 12V, 5V, 3.3V and GND supply other modules and use.
Motor rotor position sensor 331 is made up of 3 Hall elements for being separated by 120 ° of electrical angles, and real-time monitoring drives The movement position of rotor 12,
Armature winding current signal Acquisition Circuit 332 is made up of the operational amplification circuit that OP07C is constituted, and is gathered by Hall electricity The 1 three-phase windings electric current of motor that flow sensor 333 is collected.
Signal-regulated kinase 34 is adopted by the linear operation amplifying circuit constituted as core with OP07C, by signals collecting mould The signal that block 33 is collected is input to A/D modular converters 35 Jing after Signal-regulated kinase 34.
A/D modular converters 35 are sampled simultaneously using high speed, low-power consumption, six passages, sixteen bit analog-digital converter ADS8364, The control of accurate motor 1 is easily realized, and then realizes more stable circuit-breaker switching on-off operation.
Isolated drive circuit 36 adopts high-speed low-power-consumption isolation drive device 74HC245, the PWM ripples to DSP28335 outputs Export after being adjusted in boost module 37.
Boost module 37 can realize 6 simultaneously using high speed, middle high-power IGBT driving plate TX-DA962D of low-power consumption The boosting of road PWM drives.
IGBT module 38 adopts rated voltage 1200V, the SKM600GB066D of rated current 600A;37 liters of boosted module PWM after pressure directly triggers the gate pole of IGBT module 38, controls the break-make of IGBT, and then reaches the purpose of control motor 1.
Communication module 39 is made up of the RS-485 serial communication circuits that MAX3232 is constituted, with communication distance length, communication speed Rate is fast, strong antijamming capability the advantages of;Inside is connected with microprocessor unit 31, outside is connected with computer, is realized micro- The two-way communication of processor unit 31 and computer.
The asymmetric winding electric machine of primary cut-out is carried out using the asymmetric winding electric machine operating mechanism of above-mentioned primary cut-out Actuating method, it is specific as follows:
When primary cut-out carries out breaking-closing operating, the position of rotor is detected by motor rotor position sensor Signal, gathers armature winding current signal by armature winding current signal Acquisition Circuit, sends to electric machine controller;Motor control Device processed sends control command triggering motor rotation according to the position signalling and armature winding current signal that detect;Drive electricity When machine rotates, the motion of main shaft connecting lever, driving spring, kinematic link and triangle connecting lever is driven by transmission main shaft, drive insulation to draw Bar is vertically moving;Insulated tension pole drives the moving contact in breaker arc extinguishing room to do the division that linear motion completes breaker Lock is operated.
In present embodiment, electric machine controller sends control according to the position signalling and armature winding current signal that detect Command triggers motor rotation concrete grammar be:
By Signal-regulated kinase by the signal voltage amplitude stability for collecting within 0~5V, will be conditioned after letter Number send to A/D modular converters;Signal after conditioning is carried out analog-to-digital conversion and is sent to microprocessor unit by A/D modular converters; Microprocessor unit is instructed according to the motor divide-shut brake that input signal and outer computer send, and sends corresponding PWM ripples;Pass through PWM ripples are passed to IGBT module by isolated drive circuit and boost module, control the break-make triggering motor rotation of IGBT module Turn.

Claims (6)

1. the asymmetric winding electric machine operating mechanism of a kind of primary cut-out, it is characterised in that including motor (1), driver Structure (2) and electric machine controller (3);
Described electric machine controller (3) connect the one end of motor (1), motor (1) by shielded signal line The other end by ring flange (4) connect transmission mechanism (2);
Described motor (1) includes motor stator (11), rotor (12), electric machine main shaft (13) and spacing holding meanss (14);
Motor (1) radially assembles electric machine main shaft (13), rotor (12) and motor from inside to outside successively Stator (11);Rotor (12) and spacing holding meanss (14) are assemblied on the electric machine main shaft (13), the limit Position holding meanss (14) is coaxial bonded with the electric machine main shaft (13), and spacing holding meanss (14) are arranged at the motor The side that main shaft (13) is connected with transmission main shaft (22);
Described transmission mechanism (2) include multiple driving cranks (21) and transmission main shaft (22);The structure phase of each driving crank (21) Together, including main shaft connecting lever (211), driving spring (212), kinematic link (213), triangle connecting lever (214) and insulated tension pole (215);
Each driving crank (21) are uniformly arranged on transmission main shaft (22), and described transmission main shaft (22) pass through ring flange (4) Connect the electric machine main shaft (13) of the motor (1), the one end of main shaft connecting lever (211) connects the transmission by flat key Main shaft (22), the other end of main shaft connecting lever (211) are connected through the hinge the driving spring (212), the kinematic link (213) two ends are connected through the hinge the driving spring (212) and the triangle connecting lever (214) respectively, the insulated tension pole (215) lower end is threadably secured triangle connecting lever (214), and the upper end of insulated tension pole (215) is threaded connection Moving contact (51) in arc-extinguishing chamber of circuit breaker (5);
Described electric machine controller (3) include microprocessor unit (31), power module (32), signal acquisition module (33), signal Conditioning module (34), A/D modular converters (35), isolated drive circuit (36), boost module (37), IGBT module (38) and communication Module (39);
The output end of microprocessor unit (31) connects the input of isolated drive circuit (36), the isolation drive The output end of circuit (36) connects the input of boost module (37), and the output end connection of boost module (37) is described The input of IGBT module (38), the output end of IGBT module (38) connect the motor by shielded signal line (1) three-phase windings input, the output end of signal acquisition module (33) connect the defeated of Signal-regulated kinase (34) Enter end, the output end of Signal-regulated kinase (34) connects the input of A/D modular converters (35), the A/D conversions The output end of module (35) connects the input of microprocessor unit (31), the power end connection of power module (32) The power end of microprocessor unit (31), the power end of signal acquisition module (33), the power supply of Signal-regulated kinase (34) End, the power end of A/D modular converters (35), the power end of isolated drive circuit (36), the power end of boost module (37), IGBT The power end of the power end and communication module (39) of module (38), described microprocessor unit (31) pass through the communication module (39) connect outer computer.
2. the asymmetric winding electric machine operating mechanism of primary cut-out according to claim 1, it is characterised in that the motor Armature winding (111) is provided with stator (11), and armature winding (111) are embedded in the stator slot of motor stator (11).
3. the asymmetric winding electric machine operating mechanism of primary cut-out according to claim 1, it is characterised in that the motor Rotor (12) includes rotor body (121) and permanent magnet (122), is provided with the T-shaped of symmetrical structure on rotor body (121) Groove, permanent magnet (122) are alternate to be positioned in the T-slot of rotor body (121), is provided with non-magnetic between adjacent T-slot Interval insulant (123).
4. the asymmetric winding electric machine operating mechanism of primary cut-out according to claim 2, it is characterised in that the armature Winding (111) adopt asymmetric three-phase windings structure, the corresponding stator slot number of each permanent magnet pole three-phase be respectively 4,4, 1。
5. the asymmetric winding electric machine operating mechanism of primary cut-out according to claim 2, it is characterised in that the armature Winding (111) cabling mode concentrates whole away from arrangement mode using individual layer.
6. the asymmetric winding electric machine operating mechanism of primary cut-out according to claim 1 and 2, it is characterised in that described Signal acquisition module (33) includes motor rotor position sensor (331), armature winding current signal Acquisition Circuit (332) and suddenly That current sensor (333);
Motor rotor position sensor (331) are assemblied on the electric machine main shaft (13), same with the electric machine main shaft (13) Axle key connects, and the input of armature winding current signal Acquisition Circuit (332) connects Hall current sensor (333) Output end, Hall current sensor (333) are arranged on the three-phase windings input of the motor (1).
CN201620989625.XU 2016-08-30 2016-08-30 Non - symmetric winding motor operating mechanism of high voltage circuit breaker Active CN206040508U (en)

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Application Number Priority Date Filing Date Title
CN201620989625.XU CN206040508U (en) 2016-08-30 2016-08-30 Non - symmetric winding motor operating mechanism of high voltage circuit breaker

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106158495A (en) * 2016-08-30 2016-11-23 沈阳工业大学 A kind of primary cut-out asymmetric winding electric machine operating mechanism and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106158495A (en) * 2016-08-30 2016-11-23 沈阳工业大学 A kind of primary cut-out asymmetric winding electric machine operating mechanism and method

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