CN211880087U - Locked rotor and open-phase protection permanent magnet synchronous motor - Google Patents
Locked rotor and open-phase protection permanent magnet synchronous motor Download PDFInfo
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- CN211880087U CN211880087U CN202020765515.1U CN202020765515U CN211880087U CN 211880087 U CN211880087 U CN 211880087U CN 202020765515 U CN202020765515 U CN 202020765515U CN 211880087 U CN211880087 U CN 211880087U
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Abstract
The utility model discloses a stifled commentaries on classics and open phase protection PMSM relates to the motor field. The existing ECM motor control system mostly adopts a thermal protector and a traditional observer mode, the cost is increased by adopting the thermal protector, and the traditional observer mode has the condition that the observer cannot protect timely under the condition of abnormal motor parameters. The utility model discloses a controller includes the main control unit, the coordinate transform unit, SVM modulation contravariant unit, the current sampling unit, the current processing unit, stifled commentaries on classics and default phase protection unit, the unit is shut down in the warning, sample three-phase current and rotor speed in real time through main control unit and current sampling unit, after the unit module processing of difference, through stifled commentaries on classics and default phase protection unit's analysis calculation, when stifled commentaries on classics and default phase condition appear, make the warning shut down the unit and realize shutting down the warning, can in time carry out motor stifled commentaries on classics and default phase protection, the security of motor is improved.
Description
Technical Field
The utility model relates to the field of electric machines, especially, relate to a stifled commentaries on classics and default phase protection PMSM.
Background
Along with the continuous improvement of the living standard of people, the technical requirements of household electrical appliances in the ventilation and heating ventilation field, such as air conditioners and the like, such as energy conservation, environmental protection, intellectualization, low noise and the like, are increasingly strict, the industry competition is fierce, the traditional thermal protector device cannot effectively and timely perform motor stalling and open-phase protection, and the fire safety hidden danger exists, so that the problem to be solved is undoubtedly the key point of the technology.
In the heating and ventilation industry, a system for realizing control of a brushless direct current motor (BLDC) or a Permanent Magnet Synchronous Motor (PMSM) through electronic phase commutation is generally called an ECM (electronic control module) motor control system. The ECM motor control system is widely applied to systems such as ventilation and wall-mounted furnaces and the like according to the domestic and foreign safety requirements of customers
The use of thermal protectors can lead to increased costs; by adopting a traditional observer mode, the observer has the condition of untimely protection under the condition of abnormal motor parameters. Even multiple protections are required to ensure absolute safety.
Therefore, it is necessary to design a new protection method and device for the rotor blocking and phase loss of the permanent magnet synchronous motor.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model and the technical task that provides are perfected and improved prior art scheme, provide a stifled commentaries on classics and default phase protection PMSM to and carry out motor stifled commentaries on classics and default phase protection in time, improve the security of motor for the purpose. Therefore, the utility model adopts the following technical scheme.
A locked rotor and open phase protection permanent magnet synchronous motor comprises a motor part and a control system part, wherein the motor part comprises a shaft end cover, a rotor and a stator, the control system part comprises a controller, a controller end cover, a wire outlet terminal and a wiring cover, the controller comprises a driving plate, a CPU plate, a bus inductor and a power driving module,
the intelligent alarm system is characterized in that a main control unit, a coordinate transformation unit, an SVM modulation inversion unit, a current sampling unit, a current processing unit, a locked rotor and default phase protection unit and an alarm shutdown unit are arranged on the drive board and/or the CPU board, the main control unit is connected with the coordinate transformation unit, the coordinate transformation unit is connected with the SVM modulation inversion unit, the current processing unit and the locked rotor and default phase protection unit, the SVM modulation inversion unit is connected with the main control unit and the motor in a three-phase mode, the input end of the current sampling unit is connected with the motor in a three-phase mode, the output end of the current sampling unit is connected with the current processing unit, and the locked rotor and default phase protection unit is connected with the alarm shutdown unit. Three-phase current and rotor speed are sampled in real time through a main control unit and a current sampling unit, through acquisition and processing of motor voltage and current signals, protection execution of a locked rotor and an open-phase protection unit is realized, open-phase protection of a motor can be realized in a plurality of electric cycles, when locked rotor and open-phase conditions occur, a warning shutdown unit is used for achieving shutdown warning, motor locked rotor and open-phase protection can be timely and rapidly carried out, a self-integrated safety code system with high reliability is formed, and safety of the motor is improved.
As a preferable technical means: the main control unit comprises a speed ring and realizes V through the control of d-axis flux linkage and q-axis currentαβCalculated current flux linkage controller module and pass VαβThe motor model equation of (2) realizes an observer module for estimating control parameters, the speed loop and the current flux linkage controller module are connected to the current flux linkage controller module, and the current flux linkage controller module is connected to the coordinate transformation unit. Can conveniently realize the rotating speed data VαβCalculation and control parameter estimation.
As a preferable technical means: the coordinate transformation unit comprises a reverse coordinate transformation module and a forward coordinate transformation module, wherein the reverse coordinate transformation module is used for transforming 2/3 coordinates from alpha beta to abc, the forward coordinate transformation module is used for transforming 3/2 coordinates from abc to alpha beta, the input end of the reverse coordinate transformation module is connected with the current flux linkage controller module, the output end of the reverse coordinate transformation module is connected to the SVM modulation inversion unit, the input end of the forward coordinate transformation module is connected with the current processing unit, and the output end of the forward coordinate transformation module is connected with the observer module, the current flux linkage controller module and the locked rotor and open phase protection unit. The reverse coordinate transformation and the forward coordinate transformation can be conveniently realized.
As a preferable technical means: the SVM modulation inversion unit comprises an SVM modulation module and an inversion module, the SVM modulation module is connected with the inversion module, the SVM modulation module is connected to the observer module through a voltage reconstruction module, and the inversion module is connected with the current flux linkage controller module and the motor in a three-phase mode. The SVM is a magnetic field vector of which the voltage vector generates space rotation through pulse width modulation, so that the motor obtains an ideal circular rotating magnetic field, the torque pulsation of the motor is reduced, compared with the common PWM pulse width modulation, the utilization rate of the direct current bus voltage is improved by using the SVM modulation, the system efficiency is increased, the inversion unit finishes the function of converting direct current into alternating current, the direct current is converted into sine alternating current through the SVM modulation technology, and the modulation and direct current-to-alternating current inversion are conveniently realized.
As a preferable technical means: the current sampling unit is connected with a middle bridge arm or a lower bridge arm of three phases of the motor to realize a three-phase sampling circuit, and a low-pass filter is arranged in the three-phase sampling circuit. Sampling three-phase current Ia、Ib、IcWhen current real-time property is required to be ensured, and then I is addeda、Ib、IcThe filtering processing is carried out through the low-pass filter to remove burrs so as to obtain a smooth current value, so that current sampling can be conveniently realized, and the smooth current value can be obtained.
As a preferable technical means: the current sampling unit adopts three resistors to perform three-phase current sampling. The three-phase current sampling can be conveniently realized, when three resistors are used for sampling, the three-phase current unbalance degree can be directly obtained through the three current ratios, and the method is more direct and convenient compared with the method that the current reconstruction is needed to obtain the non-sampled phase current value in two-phase or single-phase sampling.
As a preferable technical means: the current processing unit comprises a current adaptive module and electricityThe current reconstruction module is connected with the input end of the current self-adaptive module to obtain three-phase sampling current and perform automatic gain calibration, and the input end of the current reconstruction module is connected with the current sampling unit to reconstruct the current when the duty ratio is too large to accurately sample. The three-phase current I after filtering treatmenta、Ib、IcThe current is sent to a current self-adaptive module for gain automatic calibration, when the duty ratio is too large to accurately sample a certain phase current, the current reconstruction module obtains the phase current by using a method of three-phase current sum equal to zero, current processing is conveniently realized, current sampling monitoring is realized in the whole motor operation process, the current offset problem caused by the difference of three-phase current sampling devices and the like in the operation process is solved, and the reliability of the obtained three-phase current is higher.
As a preferable technical means: the driving board and the CPU board are perpendicular to each other. The space of the controller can be fully saved, the size of the end cover of the controller is reduced, and the cost is reduced.
As a preferable technical means: the bus inductor is arranged in an inner groove of the controller end cover, the bus inductor is attached to the inner end face of the controller end cover at the bottom of the inner groove through silica gel, the power driving module is attached to the smooth plane of the inner end face of the controller end cover, and heat dissipation ribs are arranged on the outer surface of the controller end cover. The two high-power devices can effectively and quickly dissipate heat through surface contact with the end cover of the controller, and the heat dissipation ribs are arranged to enable the heat dissipation effect to be better.
As a preferable technical means: the outgoing line terminal comprises three types of power lines, signal lines and communication lines, and the outgoing lines are independent. By separating the three cables, signal interference between different kinds of wire harnesses can be effectively avoided.
Has the advantages that: when the motor is locked and rotor-lacking, the locked and rotor-lacking protection can be conveniently realized, the rapid halt can be realized, and the safety of the motor can be improved; the two high-power devices realize effective and rapid heat dissipation through surface contact with the controller end cover, and the heat dissipation effect is good; the structure device can be effectively applied to various power motors, is not only suitable for surface-mounted permanent magnet synchronous motors, but also suitable for embedded permanent magnet synchronous motors.
Drawings
Fig. 1 is the utility model discloses 3D blasting structure sketch map.
Fig. 2 is a schematic diagram of the module connection of the present invention.
Figure 3 is the PCBA board of the present invention.
In the figure: 1-shaft end cap; 2-a rotor; 3-a stator; 4-a controller; 5-controller end cover; 6-outlet terminal; 7-a wiring cover; 401 — a main control unit; 402-a coordinate transformation unit; 403-SVM modulation inversion unit; 404-a current sampling unit; 405-a current processing unit; 406-locked rotor and open phase protection unit; 407-alarm shutdown unit; 408-a voltage reconstruction module; 40101-speed loop; 40102-current flux linkage controller module; 40103-observer module; 40201-inverse coordinate transformation module; 40202-forward coordinate transformation module; 40301-SVM modulation module; 40302-inversion module; 8-a drive plate; 9-a CPU board; 10-bus capacitance; 11-bus inductance; 12-power driving module.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1-3, a locked rotor and open phase protection permanent magnet synchronous motor comprises a motor part and a control system part, the motor part comprises a shaft end cover 1, a rotor 2 and a stator 3, the control system part comprises a controller 4, a controller end cover 5, an outlet terminal 6 and a wiring cover 7, the controller 4 comprises a driving board 8, a CPU board 9, a bus capacitor 10, a bus inductor 11 and a power driving module 12, the driving board 8 and/or the CPU board 9 is provided with a main control unit 401, a coordinate transformation unit 402, an SVM modulation inversion unit 403, a current sampling unit 404, a current processing unit 405, a locked rotor and open phase protection unit 406 and an alarm shutdown unit 407, the main control unit 401 is connected with the coordinate transformation unit 402, the coordinate transformation unit 402 is connected with the SVM modulation inversion unit 403, the current processing unit 405 is connected with the locked rotor and open phase protection unit, the modulation inversion unit 403 is connected with the main control unit 401 and the motor in three phases, the input end of the current sampling unit 404 is connected with the three phases of the motor, the output end of the current sampling unit 404 is connected with the current processing unit 405, and the locked rotor and open phase protection unit 406 is connected with the alarm shutdown unit 407.
The locked rotor and open phase protection unit 406 is a conventional technology, such as:
the technical scheme of patent number 201810185488.8 is adopted, and the method comprises the following steps: the protector comprises a movable contact piece and a static contact piece, wherein the movable contact piece is in contact with the static contact piece when the temperature of the movable contact piece is lower than a set temperature and is separated from the static contact piece when the temperature of the movable contact piece is higher than the set temperature, a movable contact piece wiring terminal is arranged at the tail part of the movable contact piece, a static contact piece wiring terminal is arranged at the tail part of the static contact piece, a heating resistor is connected below the static contact piece in parallel, and two ends of the heating resistor are respectively connected to the static contact piece wiring terminal and the movable contact piece wiring terminal. The mode of' the temperature of the protector arranged on the corresponding winding can be simultaneously raised, the double-layer metal sheet structure of the movable contact piece is rapidly heated and expanded, the whole movable contact piece is gradually bent upwards and deformed, once the temperature of the movable contact piece exceeds a set value, the bending amount of the movable contact piece is enough to completely separate the movable contact piece from the static contact piece and break the movable contact piece, the heating resistor is continuously heated, the movable contact piece is always in a breaking state, the motor is timely closed, the motor can be prevented from being automatically closed to start the motor, and the phenomenon that the motor is burnt out is timely and effectively avoided.
Secondly, of course, the technical solution of patent No. 201320457129.6 can also be adopted, which adopts: a three-phase asynchronous motor phase-lack protection device is characterized in that three groups of windings of a delta connection three-phase asynchronous motor are respectively connected with a thermal protector (201) in series, and the action temperature of the thermal protector is lower than the motor burnout temperature. The mode of' is through the mode of restricting the highest temperature of motor on the thermal protector, thereby protection motor when the motor temperature rises and will burn out the motor because of the phase failure to the protection motor to protect motor overload, overflow, locked rotor.
Thirdly, the technical proposal with patent number 201320457129.6 adopts: "a three-phase asynchronous motor economize on electricity controller, install the circuit breaker and following circuit unit in the iron shell: the device comprises power electronic switches (11), (21) and (31), sawtooth wave generators (12), (22) and (32), comparators (13), (23) and (33), a voltage sampler (1), a current sampler (2), a filter (3), a level regulator (4), a constant current soft starter (5), an overcurrent protector (6) and a phase-loss protector (7). "by detecting the motor stator voltage and the motor operating current, the signal voltages representing the two parameters are compared to generate the deviation signal. The deviation signal is used to control the conduction angle change of the power switch until the deviation is zero. Thereby ensuring that the stator voltage of the motor and the working current of the motor change in proportion. When the load of the motor is changed, the current of the motor is changed, and correspondingly, the stator voltage of the motor is changed, so that the motor can be operated in the optimal power-saving state under different load rates. It has the functions of light load, saving power, constant current soft start and phase loss, overload, rotation blockage and short circuit protection.
Three patents above all have realized the utility model provides a stifled commentaries on classics and the function of default phase protection unit.
To realize the rotational speed data, VαβCalculation and control parameter estimation, the main control unit 401 includes a speed loop 40101, V is realized by control of d-axis flux linkage and q-axis currentαβCalculated Current flux linkage controller Module 40102 and pass VαβThe observer module 40103, the speed ring 40101 and the current flux linkage controller module 40102, which realize the estimation of control parameters, are connected to the current flux linkage controller module 40102, and the current flux linkage controller module 40102 is connected to the coordinate transformation unit 402. Can conveniently realize the rotating speed data VαβCalculation and control parameter estimation.
In order to realize the reverse coordinate transformation and the forward coordinate transformation, the coordinate transformation unit 402 comprises a reverse coordinate transformation module 40201 for transforming 2/3 coordinates from α β to abc and a forward coordinate transformation module 40202 for transforming 3/2 coordinates from abc to α β, wherein the input end of the reverse coordinate transformation module 40201 is connected with the current flux linkage controller module 40102, the output end of the reverse coordinate transformation module 40201 is connected with the SVM modulation inversion unit 403, the input end of the forward coordinate transformation module 40202 is connected with the current processing unit 405, and the output end of the forward coordinate transformation module 40202 is connected with the observer module 40103, the current flux linkage controller module 40102 and the locked rotor and open phase protection unit 406. The reverse coordinate transformation and the forward coordinate transformation can be conveniently realized.
In order to realize modulation and direct current-to-direct current inversion, the SVM modulation inversion unit 403 includes an SVM modulation module 40301 and an inversion module 40302, the SVM modulation module 40301 is connected to the inversion module 40302, the SVM modulation module 40301 is connected to the observer module 40103 through the voltage reconstruction module 408, and the inversion module 40302 is connected to the current flux linkage controller module 40102 and the three phases of the motor. The SVM is a magnetic field vector of which the voltage vector generates space rotation through pulse width modulation, so that the motor obtains an ideal circular rotating magnetic field, the torque pulsation of the motor is reduced, compared with the common PWM pulse width modulation, the utilization rate of the direct current bus voltage is improved by using the SVM modulation, the system efficiency is increased, the inversion unit finishes the function of converting direct current into alternating current, the direct current is converted into sine alternating current through the SVM modulation technology, and the modulation and direct current-to-alternating current inversion are conveniently realized.
In order to obtain a smooth current value, the current sampling unit 404 is connected to the lower bridge arm of the three phases of the motor to implement a three-phase sampling circuit, and a low-pass filter is disposed in the three-phase sampling circuit. Sampling three-phase current Ia、Ib、IcWhen current real-time property is required to be ensured, and then I is addeda、Ib、IcThe filtering processing is carried out through the low-pass filter to remove burrs so as to obtain a smooth current value, so that current sampling can be conveniently realized, and the smooth current value can be obtained.
In order to obtain the three-phase current imbalance degree, the current sampling unit 404 uses three resistors to sample the three-phase current. The three-phase current sampling can be conveniently realized, when three resistors are used for sampling, the three-phase current unbalance degree can be directly obtained through the three current ratios, and the method is more direct and convenient compared with the method that the current reconstruction is needed to obtain the non-sampled phase current value in two-phase or single-phase sampling.
For convenient implementation of the current processing, the current processing unit 405 comprises a current adaptation module and a current reconstruction module, the input of the current adaptation module being connected to the current sampling unit 404 for obtaining the three phasesThe current is sampled and gain auto-calibration is performed, and the input terminal of the current reconstruction module is connected to the current sampling unit 404 to reconstruct the current if the duty cycle is too large to accurately sample. The three-phase current I after filtering treatmenta、Ib、IcAnd the current is sent to a current self-adaptive module for automatic gain calibration, and when the duty ratio is too large to accurately sample a certain phase current, the current reconstruction module obtains the phase current by using a method of three-phase current sum being equal to zero, so that the current processing is conveniently realized.
In order to save space for the controller 4 substantially, the drive board 8 and the CPU board 9 are perpendicular to each other. The space of the controller 4 can be fully saved, the size of the controller end cover 5 is reduced, and the cost is reduced.
In order to realize quick and effective heat dissipation, the bus inductor is arranged in an inner groove of the controller end cover 5, the bus inductor is attached to the inner end face of the controller end cover 5 at the bottom of the inner groove through silica gel, the power driving module is attached to the smooth plane of the inner end face of the controller end cover 5, and heat dissipation ribs are arranged on the outer surface of the controller end cover 5. The two high-power devices can effectively and quickly dissipate heat through surface contact with the controller end cover 5, and the heat dissipation ribs are arranged to enable the heat dissipation effect to be better.
In order to avoid signal interference between different kinds of wire harnesses, the outlet terminal 6 includes three types of power lines, signal lines and communication lines, and each outlet is independent. By separating the three cables, signal interference between different kinds of wire harnesses can be effectively avoided.
The speed Wr of the rotor 2 is obtained through an observer module 40103 of the main control unit 401, the three-phase current is sampled in real time through a current sampling unit 404 and is subjected to low-pass filtering processing, then the sampled current is transmitted to a current processing unit 405 to be subjected to gain automatic calibration or current reconstruction processing, and a locked rotor and open phase protection unit 406 obtains the converted single current I from the current processing unit 405αAnd Iβ，And the voltage signal V converted from the coordinate transformation unit 402αβAfter the rotor 2 speed Wr is synthesized, two protection modes of the combined protection module and the threshold protection module based on the two-phase unbalance degree of the three-phase current are simultaneously observed on the basis of the speed and the voltage vector in the locked rotor and open-phase protection unit 406The analysis and calculation of the block combination enable the alarm stop unit 407 to realize stop alarm when locked rotor and open phase conditions occur, so that the locked rotor and open phase protection of the motor can be performed rapidly in time, a self-integrated safety code system with high reliability is formed, and the safety of the motor is improved.
In this example, the observer module 40103 employs a flux linkage observer, and may also employ a conventional synovial observer, or may employ a reactive observer instead.
In this example, the wiring cover 7 is fixed to the controller end cover 5 by screws, and when wiring is required or definition of a wiring harness is checked, the wiring cover 7 can be opened.
In this example, the current sampling may also be performed by using the middle bridge arm instead of the lower bridge arm.
The above-mentioned permanent magnet synchronous motor with locked rotor and open-phase protection shown in fig. 1-3 is a specific embodiment of the present invention, and embodies the substantial features and improvements of the present invention, and can be modified according to the actual use requirement, and the equivalent modifications in the aspects of shape, structure, etc. are all listed in the protection scope of the present solution.
Claims (10)
1. The utility model provides a locked rotor and open phase protection PMSM, includes motor part and control system part, motor part include axle head cover (1), rotor (2) and stator (3), control system part include controller (4), controller end cover (5), leading-out terminal (6) and wiring lid (7), controller (4) including drive plate (8), CPU board (9), bus capacitance (10), bus inductance (11) and power drive module (12), its characterized in that: the driving board (8) and/or the CPU board (9) is provided with a main control unit (401), a coordinate transformation unit (402), an SVM modulation inversion unit (403), a current sampling unit (404), a current processing unit (405), a locked rotor and open phase protection unit (406) and an alarm shutdown unit (407), the main control unit (401) is connected with a coordinate transformation unit (402), the coordinate transformation unit (402) is connected with an SVM modulation inversion unit (403), a current processing unit (405) and a locked-rotor and open-phase protection unit (406), the SVM modulation inverter unit (403) is connected with the main control unit (401) and the three phases of the motor, the input end of the current sampling unit (404) is connected with the three phases of the motor, the output end of the current sampling unit (404) is connected with the current processing unit (405), the locked-rotor and open-phase protection unit (406) is connected with an alarm shutdown unit (407).
2. The locked rotor and open phase protection permanent magnet synchronous motor according to claim 1, characterized in that: the main control unit (401) comprises a speed ring (40101) and realizes V through control of d-axis flux linkage and q-axis currentαβCalculated Current flux linkage controller Module (40102) and passing VαβThe motor model equation of (a) realizes an observer module (40103) for estimating control parameters, the speed ring (40101) and the current flux linkage controller module (40102) are connected to the current flux linkage controller module (40102), and the current flux linkage controller module (40102) is connected to the coordinate transformation unit (402).
3. The locked rotor and open phase protection permanent magnet synchronous motor according to claim 2, characterized in that: the coordinate transformation unit (402) comprises a reverse coordinate transformation module (40201) for transforming 2/3 coordinates from alpha beta to abc and a forward coordinate transformation module (40202) for transforming 3/2 coordinates from abc to alpha beta, wherein the input end of the reverse coordinate transformation module (40201) is connected with a current flux linkage controller module (40102), the output end of the reverse coordinate transformation module (40201) is connected with an SVM modulation inversion unit (403), the input end of the forward coordinate transformation module (40202) is connected with a current processing unit (405), and the output end of the forward coordinate transformation module (40202) is connected with an observer module (40103), a current flux linkage controller module (40102) and a locked-rotor and open-phase protection unit (406).
4. The locked rotor and open phase protection permanent magnet synchronous motor according to claim 3, characterized in that: the SVM modulation and inversion unit (403) comprises an SVM modulation module (40301) and an inversion module (40302), the SVM modulation module (40301) is connected with the inversion module (40302), the SVM modulation module (40301) is connected to an observer module (40103) through a voltage reconstruction module (408), and the inversion module (40302) is connected with a current flux linkage controller module (40102) and a motor in a three-phase mode.
5. The locked rotor and open phase protection permanent magnet synchronous motor according to claim 4, characterized in that: the current sampling unit (404) is connected with a middle bridge arm or a lower bridge arm of three phases of the motor to realize a three-phase sampling circuit, and a low-pass filter is arranged in the three-phase sampling circuit.
6. The locked rotor and open phase protection permanent magnet synchronous motor according to claim 5, characterized in that: the current sampling unit (404) adopts three resistors to perform three-phase current sampling.
7. The locked rotor and open phase protection permanent magnet synchronous motor according to claim 6, characterized in that: the current processing unit (405) comprises a current self-adapting module and a current reconstruction module, wherein the input end of the current self-adapting module is connected with the current sampling unit (404) to obtain three-phase sampling current and perform automatic gain calibration, and the input end of the current reconstruction module is connected with the current sampling unit (404) to reconstruct the phase current when the duty ratio is too large to accurately sample.
8. The locked rotor and open phase protection permanent magnet synchronous motor according to claim 1, characterized in that: the driving board (8) and the CPU board (9) are perpendicular to each other.
9. The locked rotor and open phase protection permanent magnet synchronous motor according to claim 1, characterized in that: the bus inductor is arranged in an inner groove of the controller end cover (5), the bus inductor is attached to the inner end face of the controller end cover (5) at the bottom of the inner groove through silica gel, the power driving module is attached to the smooth plane of the inner end face of the controller end cover (5), and heat dissipation ribs are arranged on the outer surface of the controller end cover (5).
10. The locked rotor and open phase protection permanent magnet synchronous motor according to claim 1, characterized in that: the outgoing line terminal (6) comprises three types of power lines, signal lines and communication lines, and the outgoing lines are independent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020765515.1U CN211880087U (en) | 2020-05-11 | 2020-05-11 | Locked rotor and open-phase protection permanent magnet synchronous motor |
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| CN202020765515.1U CN211880087U (en) | 2020-05-11 | 2020-05-11 | Locked rotor and open-phase protection permanent magnet synchronous motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021227343A1 (en) * | 2020-05-11 | 2021-11-18 | 卧龙电气驱动集团股份有限公司 | Permanent magnet synchronous motor capable of performing stalling and phase loss protection, and protection method therefor |
| CN113867179A (en) * | 2021-11-24 | 2021-12-31 | 中车大连电力牵引研发中心有限公司 | Electric locomotive fault diagnosis method and semi-physical simulation test platform thereof |
-
2020
- 2020-05-11 CN CN202020765515.1U patent/CN211880087U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021227343A1 (en) * | 2020-05-11 | 2021-11-18 | 卧龙电气驱动集团股份有限公司 | Permanent magnet synchronous motor capable of performing stalling and phase loss protection, and protection method therefor |
| CN113867179A (en) * | 2021-11-24 | 2021-12-31 | 中车大连电力牵引研发中心有限公司 | Electric locomotive fault diagnosis method and semi-physical simulation test platform thereof |
| CN113867179B (en) * | 2021-11-24 | 2023-11-24 | 中车大连电力牵引研发中心有限公司 | Electric locomotive fault diagnosis method and semi-physical simulation test platform thereof |
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