CN115308596A - Fault-tolerant motor turn-to-turn short circuit fault diagnosis method and device - Google Patents
Fault-tolerant motor turn-to-turn short circuit fault diagnosis method and device Download PDFInfo
- Publication number
- CN115308596A CN115308596A CN202210954883.4A CN202210954883A CN115308596A CN 115308596 A CN115308596 A CN 115308596A CN 202210954883 A CN202210954883 A CN 202210954883A CN 115308596 A CN115308596 A CN 115308596A
- Authority
- CN
- China
- Prior art keywords
- fault
- motor
- turn
- tolerant
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
A fault-tolerant motor turn-to-turn short circuit fault diagnosis method and device are disclosed, wherein the phase current of each phase winding of the motor is collected; filtering each collected phase current to obtain a harmonic current; obtaining a period effective value of a corresponding harmonic current based on each of the harmonic currents; comparing each period effective value with a preset threshold value; and if the period effective value is larger than the preset threshold value, the winding corresponding to the period effective value is in fault. The fault diagnosis method and the fault diagnosis device can realize on-line diagnosis and positioning of turn-to-turn short circuit, have simple and reliable calculation process, do not need to add extra hardware circuits, can integrate a diagnosis algorithm into a drive control system microprocessor, reduce the cost and effectively simplify a hardware structure, thereby improving the reliability of the drive control system.
Description
Technical Field
The disclosure belongs to the technical field of motor fault diagnosis and motor control, and particularly relates to a fault-tolerant motor turn-to-turn short circuit fault diagnosis method and device.
Background
The motor insulation system is used as a key part of motor energy conversion and is the weakest link in the motor, and under the action of severe conditions of thermal stress, electrical stress, mechanical stress, environmental stress and the like, the motor insulation system is extremely easy to damage, so that faults such as phase short circuit, interphase short circuit, ground short circuit, turn-to-turn short circuit and the like are caused. In the switching process of a power tube controlled by a fault motor, turn-to-turn insulation of a winding bears high-frequency transient overvoltage, and friction caused by dangerous vibration of a winding coil in the operation process can cause turn-to-turn insulation damage, so that turn-to-turn short circuit fault of the winding is caused. In the operation process of the permanent magnet motor, the permanent magnet cannot be de-energized, a large short-circuit current can be generated in a short-circuit coil, the local temperature rise of the coil is aggravated, and if fault diagnosis cannot be carried out in time and corresponding fault isolation measures are taken, the fault spreading and even motor paralysis can be caused. Therefore, if the fault can be diagnosed in time in the early stage of the fault and corresponding fault-tolerant control and fault isolation measures are adopted, the method has important theoretical significance and practical value for the operation and maintenance of the motor.
Disclosure of Invention
In order to solve the above technical problems, an object of the present disclosure is to provide a fault-tolerant motor turn-to-turn short circuit fault diagnosis method and apparatus capable of diagnosing and locating a fault of a motor winding turn-to-turn short circuit in real time when a motor is running.
In order to realize the purpose of the disclosure, the technical scheme adopted by the disclosure is as follows:
a fault-tolerant motor turn-to-turn short circuit fault diagnosis method is used for detecting motor turn-to-turn faults and comprises the following steps:
collecting phase current of each phase winding of the motor;
filtering each collected phase current to obtain a harmonic current;
obtaining a period effective value of a corresponding harmonic current based on each of the harmonic currents;
comparing each period effective value with a preset threshold value;
and if the period effective value is larger than the preset threshold value, the winding corresponding to the period effective value fails.
Optionally, the preset threshold is obtained by analyzing the impedance of each phase winding of the motor and the harmonic voltage to obtain a period effective value of the harmonic current, and obtaining the preset threshold according to a diagnostic sensitivity requirement.
Alternatively, if an open circuit or short circuit fault is detected in the motor windings,
and carrying out fault-tolerant control operation on the motor by adopting an optimal torque fault-tolerant control strategy.
The present disclosure also provides a fault-tolerant motor turn-to-turn short circuit fault diagnosis device, including the following components:
the current sensors are used for detecting the phase current of each phase winding of the motor;
and the digital control circuit connected with the current sensor can filter each collected phase current to obtain harmonic current, a period effective value corresponding to the harmonic current is obtained based on each harmonic current, and when the period effective value is greater than a preset threshold value, the winding corresponding to the period effective value is judged to have a fault.
Optionally, the method further comprises:
the motor is connected with the digital control circuit through the rotary transformer, and the rotary transformer is used for acquiring a rotating speed signal and a position signal of the motor;
the digital control circuit is also used for outputting an optimal torque fault-tolerant control signal to control the motor according to the phase current, the rotating speed signal and the position signal of the motor;
and the digital control circuit is connected with the control end of the motor.
Optionally, the digital control circuit comprises:
the digital signal processing unit is connected with the current sensor and the rotary transformer and used for outputting an optimal torque fault-tolerant control signal to control the motor based on the phase current, the rotating speed signal and the position signal of the motor;
and the control unit is connected with the digital signal processing unit and is used for filtering each acquired phase current to obtain harmonic current and obtaining a period effective value corresponding to the harmonic current based on each harmonic current.
Optionally, the method further comprises:
and the digital control circuit is connected with the motor through the fault-tolerant power driver, and the fault-tolerant power driver is used for controlling the motor according to the optimal torque fault-tolerant control signal.
Optionally, the fault tolerant power driver comprises:
the drive isolation circuit is used for realizing electrical isolation among windings of the motor;
the H-bridge power conversion circuit is used for independently supplying power to each phase winding of the motor based on the optimal torque fault-tolerant control signal;
the digital control circuit is connected with the motor after passing through the drive isolation circuit and the H-bridge power conversion circuit in sequence.
Optionally, the method further comprises:
and the digital control circuit is respectively connected with the current sensor and the rotary transformer after passing through the signal detection circuit, and the signal detection circuit is used for decoding the acquired signals.
Optionally, the signal detection circuit comprises:
the digital control circuit is connected with each current sensor after passing through the current signal acquisition unit, and the current signal acquisition unit is used for acquiring each phase current.
The digital control circuit is connected with the rotary transformer after passing through the rotary transformer demodulation unit, and the rotary transformer demodulation unit is used for acquiring a rotating speed signal and a position signal of the motor.
According to the method, the phase current of each phase of winding of the motor is collected, band-pass filtering is carried out on each phase of current, so that high-frequency characteristic harmonic current is obtained, the inter-turn short circuit fault characteristic value is represented by calculating the cycle effective value of the extracted harmonic current, finally, the fault characteristic value of each phase of winding current obtained on line in real time is compared with the preset threshold value, the cycle effective value is larger than the preset threshold value, the winding corresponding to the cycle effective value breaks down, and therefore on-line diagnosis and positioning of inter-turn short circuit faults are achieved. The fault diagnosis method is simple and reliable in calculation flow, does not need to add an additional hardware circuit, can integrate a diagnosis algorithm into a drive control system microprocessor, reduces cost, and effectively simplifies a hardware structure, so that the reliability of the drive control system is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
FIG. 1 is a phase current waveform diagram before and after a motor fault in the present disclosure;
FIG. 2 is a block flow diagram of a fault tolerant motor turn-to-turn short fault diagnostic method of the present disclosure;
FIG. 3 is a flow chart of a fault tolerant motor turn-to-turn short fault diagnostic method of the present disclosure;
FIG. 4 is a schematic diagram of the structure of a bandpass filter in the present disclosure;
fig. 5 is a schematic structural diagram of a fault-tolerant motor turn-to-turn short circuit fault diagnosis device in the disclosure;
fig. 6 is a schematic structural diagram of an H-bridge power conversion circuit according to the present disclosure.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant matter and not restrictive of the disclosure. It should also be noted that, for ease of description, only those portions relevant to the present disclosure are shown in the drawings.
In addition, the features of the embodiments and modes in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The disclosure provides a fault-tolerant motor turn-to-turn short circuit fault diagnosis method, which is used for detecting turn-to-turn faults of a motor, wherein the faults can be short circuits; the motor can be a brushless direct current motor, a permanent magnet synchronous motor, a three-phase asynchronous motor and the like, and a permanent magnet fault-tolerant motor is preferably adopted; referring to fig. 1, taking a six-phase permanent magnet fault-tolerant motor as an example, after a turn-to-turn short circuit fault occurs in a phase winding of the six-phase permanent magnet fault-tolerant motor, impedance of the fault phase winding changes, and corresponding high-frequency harmonic current is generated under the action of high-frequency harmonic voltage generated by PWM chopping of a current loop in motor control.
Based on the characteristics, a fault-tolerant motor turn-to-turn short circuit fault diagnosis method is provided, and referring to fig. 2 and 3, the fault-tolerant motor turn-to-turn short circuit fault diagnosis method comprises the following steps:
s11, collecting phase current I of each phase winding of the motor i (ii) a This step may be detected by a current sensor for each phase winding, the detected position may be arranged on a control line between the control unit and the motor.
S12, filtering each collected phase current to obtain a harmonic current; the step can be realized by adopting a controller for controlling the motor, and a digital band-pass filter in the controller carries out band-pass filtering on the acquired current of each phase so as to obtain a harmonic current component I of the required fault characteristic frequency ibp . The high-frequency harmonic component of the phase current can be extracted by using the high-frequency harmonic voltage introduced by the PWM chopping control in the motor drive control as excitation. The digital band pass filter is a cascade type filter that may be integrated in the motor controller. Referring to fig. 4, for example, an 8-order IIR filter is used, and an 8-order bandpass filter is formed by cascading 4 2-order filters, thereby implementing a bandpass filtering algorithm.
S13, obtaining a period effective value of the corresponding harmonic current based on each harmonic current; designing a period effective value algorithm to carry out period extraction on the harmonic currentEffective value calculation to quantize the high frequency harmonic current I ibp_RMS ；
Specifically, the formula for calculating the period effective value of the high-frequency harmonic current can be as follows:
wherein T represents the phase winding sine wave current period, T 0 Denotes the initial time of the cycle calculation, I ibp Representing high frequency harmonic currents and t time.
And S14, comparing the effective value of each period with a preset threshold, and if the effective value of each period is greater than the preset threshold, determining that the winding corresponding to the effective value of each period has a fault, so as to diagnose and position turn-to-turn short circuit faults.
In the present disclosure, steps S2 to S4 may all be implemented by using a motor controller, including functions of band-pass filtering, calculation of a period effective value, comparison with a preset threshold, and the like, without adding other hardware.
The preset threshold value can be obtained by analyzing the impedance and the harmonic voltage of each phase winding of the motor to obtain the period effective value of the harmonic current, and the preset threshold value is obtained according to the diagnosis sensitivity requirement.
The diagnosis algorithm disclosed by the invention can still quickly and effectively diagnose the fault in the secondary turn-to-turn short circuit fault state.
In another embodiment, whether the motor winding is in open circuit or short circuit fault can be detected in real time; if the motor winding is monitored to have an open circuit or short circuit fault;
carrying out fault-tolerant control operation on the motor by adopting an optimal torque fault-tolerant control strategy; under the control condition, stable fault-tolerant operation of the motor in a fault state is realized.
Referring to fig. 5, the present disclosure further provides a motor fault diagnosis apparatus, including a current sensor 2 and a digital control circuit 5, where the digital control circuit 5 is connected to the current sensor 2, and the current sensor 2 is installed on a line leading to a motor winding:
the current sensors 2 are used for detecting phase currents of windings of all phases of the motor 1; the current sensor 2 is arranged on each circuit between the motor controller and the motor winding and is used for detecting the current on each winding;
the digital control circuit 5 can filter each collected phase current to obtain a harmonic current, a period effective value corresponding to the harmonic current is obtained based on each harmonic current, and when the period effective value is larger than a preset threshold value, it is judged that a winding corresponding to the period effective value fails.
In this embodiment, the digital control circuit 5 may include a control unit 52, and the control unit 52 is configured to filter each collected phase current, obtain a harmonic current, and obtain a period effective value of the corresponding harmonic current based on each harmonic current.
The control unit 52 may be a DSP processor in the motor controller, and a digital control circuit that can realize the functions of the present disclosure is directly built in when designing the motor controller, without adding other hardware facilities, so the motor fault diagnosis apparatus has a simple structure and a small calculation amount, and the phase current high-frequency harmonic extraction and fault identification algorithm is easily embedded in the processor of the motor controller, thereby simplifying the controller digital control structure, without adding additional hardware, and being simple and reliable, low in cost, and having a very high engineering application value.
A signal detection circuit 4 can be further arranged between the current sensor 2 and the digital control circuit 5, the signal detection circuit 4 comprises a current signal acquisition unit 41, and the current signal acquisition unit 41 is used for acquiring each phase current. The current signal collecting unit 41 may be an a/D converter and converts the signal.
In another embodiment, the fault-tolerant motor turn-to-turn short circuit fault diagnosis device further comprises a rotary transformer 3, the motor 1 is connected with a digital control circuit 5 through the rotary transformer 3, and the digital control circuit 5 is connected with a control end of the motor 1:
the rotary transformer 3 is used for acquiring a rotating speed signal and a position signal of the motor 1; the digital control circuit 5 is also used for outputting an optimal torque fault-tolerant control signal to control the motor 1 according to the phase current, the rotating speed signal and the position signal of the motor 1.
Referring to fig. 6, the optimal torque fault-tolerant control strategy control method specifically includes that a rotation speed error between a given rotation speed and an actual rotation speed of a motor is controlled by a PID to output a given torque, then a given current of each phase winding is output through an optimal torque control strategy, a voltage deviation signal of each phase is output through an inner current loop current error, a PWM control signal of a drive controller is output through PWM chopping control, and each power tube in the drive controller is turned on or off according to the control signal, so that the motor control is realized.
In another specific embodiment, the digital control circuit 5 includes a digital signal processing unit 51 and a control unit 52, the digital signal processing unit 51 is connected to the current sensor 2 and the rotary transformer 3, respectively, and the digital signal processing unit 51 is further connected to the control unit 52;
the digital signal processing unit 51 is used for outputting an optimal torque fault-tolerant control signal to control the motor 1 based on the phase current, the rotating speed signal and the position signal of the motor 1; the digital signal processing unit 51 may be an FPGA processor in a motor controller. Which may include a current controller and a PWM signal generator.
The control unit 52 is configured to filter each collected phase current, obtain a harmonic current, and obtain a period effective value of the corresponding harmonic current based on each harmonic current. The control unit 52 may be a DSP processor in a motor controller, which may include a speed controller and an error-tolerant controller.
In one embodiment, the fault motor control device further comprises a fault-tolerant power driver 6, the digital control circuit 5 is connected with the motor 1 through the fault-tolerant power driver 6, and the fault-tolerant power driver 6 is used for controlling the motor 1 according to the optimal torque fault-tolerant control signal. Specifically, the fault-tolerant power driver 6 may include a driving isolation circuit 61 and an H-bridge power conversion circuit 62, and the digital signal processing unit 51 is connected to the motor after passing through the driving isolation circuit 61 and the H-bridge power conversion circuit 62 in sequence.
The drive isolation circuit 61 is used for realizing electrical isolation between the windings of the motor 1;
the H-bridge power conversion circuit 62 is used to individually power each phase winding of the motor 1 based on the optimal torque fault tolerant control signal. Referring to fig. 6, an H-bridge structure is adopted to supply power to each phase of winding individually, so as to realize electrical isolation between the windings, and further improve the reliability of the motor system.
In another embodiment, the fault motor control device further comprises a signal detection circuit 4, the digital control circuit 5 is respectively connected with the current sensor 2 and the rotary transformer 3 through the signal detection circuit 4, and the signal detection circuit 4 is used for decoding the collected signals. Specifically, the signal detection circuit 4 may include:
the current signal acquisition unit 41, digital control circuit 5 are connected with each current sensor 2 behind current signal acquisition unit 41, and current signal acquisition unit 41 is used for gathering each phase current.
The digital control circuit 5 is connected with the rotary transformer 3 through the rotary transformer demodulation unit 42, and the rotary transformer demodulation unit 42 is used for acquiring a rotating speed signal and a position signal of the motor.
Sampling rotor rotating speed and position signals of the permanent magnet fault-tolerant motor through a rotary transformer 3, converting the signals into corresponding electric signals through a current signal acquisition unit 41, and then respectively performing filtering and level signal conversion through corresponding signal conditioning circuits; then, the acquisition of the electric signals is finished by an A/D conversion unit and a rotary transformer demodulation unit in an FPGA control signal detection circuit in the digital control circuit 5, band-pass filtering and high-frequency harmonic current period effective value calculation are carried out on each phase of current to obtain turn-to-turn short circuit fault characteristic values, and the acquired electric signals and the calculated fault characteristic signals are transmitted to a DSP in the digital control circuit 5; and the DSP finishes motor control according to the motor current, the rotating speed and the position feedback signal, and realizes turn-to-turn short circuit fault diagnosis and fault operation according to the fault signal.
Based on the configuration, the invention has the beneficial technical effects that:
1. according to the method for diagnosing the turn-to-turn short circuit fault of the permanent magnet fault-tolerant motor based on PWM harmonic current extraction, the fault can be identified and positioned by extracting the high-frequency harmonic of the current of the phase winding of the motor and carrying out data analysis, additional hardware is not required to be added, and the method is simple, reliable, low in cost and high in engineering application value.
2. The fault diagnosis algorithm has a simple structure and small calculation amount, and the phase current high-frequency harmonic extraction and fault identification algorithm is easy to embed into a drive control system processor, so that the digital control structure of the controller is simplified;
3. based on the permanent magnet fault-tolerant motor system, the fault diagnosis method can realize the diagnosis and the positioning of turn-to-turn short circuit faults under the normal operation and fault-tolerant operation states of the motor system.
In the description of the present specification, reference to the description of "one embodiment/mode", "some embodiments/modes", "examples", "specific examples", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the present application. In this specification, a schematic representation of the above terms does not necessarily refer to the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are provided merely for clarity of explanation and are not intended to limit the scope of the disclosure. Other variations or modifications may be made to those skilled in the art, based on the above disclosure, and still be within the scope of the present disclosure.
Claims (10)
1. A fault-tolerant motor turn-to-turn short circuit fault diagnosis method; for detecting turn-to-turn faults in an electric machine, comprising the steps of:
collecting phase current of each phase winding of the motor;
filtering each collected phase current to obtain a harmonic current;
obtaining a period effective value of a corresponding harmonic current based on each of the harmonic currents;
comparing each period effective value with a preset threshold value;
and if the period effective value is larger than the preset threshold value, the winding corresponding to the period effective value is in fault.
2. The fault-tolerant motor turn-to-turn short circuit fault diagnosis method of claim 1, characterized by: and analyzing the preset threshold value according to the impedance of each phase winding of the motor and the harmonic voltage to obtain the period effective value of the harmonic current, and obtaining the preset threshold value according to the diagnosis sensitivity requirement.
3. The fault tolerant motor turn-to-turn short fault diagnostic method of claim 1, characterized in that:
and if the motor winding is monitored to have an open circuit or short circuit fault, carrying out fault-tolerant control operation on the motor by adopting an optimal torque fault-tolerant control strategy.
4. A fault-tolerant motor turn-to-turn short circuit fault diagnosis device is characterized by comprising the following components:
the current sensors are used for detecting the phase current of each phase winding of the motor;
and the digital control circuit connected with the current sensor can filter each collected phase current to obtain harmonic current, a period effective value corresponding to the harmonic current is obtained based on each harmonic current, and when the period effective value is greater than a preset threshold value, the winding corresponding to the period effective value is judged to have a fault.
5. The fault-tolerant motor turn-to-turn short circuit fault diagnosis device of claim 4, further comprising:
the motor is connected with the digital control circuit through the rotary transformer, and the rotary transformer is used for acquiring a rotating speed signal and a position signal of the motor;
the digital control circuit is also used for outputting an optimal torque fault-tolerant control signal to control the motor according to the phase current, the rotating speed signal and the position signal of the motor;
and the digital control circuit is connected with the control end of the motor.
6. The fault-tolerant motor turn-to-turn short circuit fault diagnosis device of claim 5, wherein the digital control circuit comprises:
the digital signal processing unit is connected with the current sensor and the rotary transformer and used for outputting an optimal torque fault-tolerant control signal to control the motor based on the phase current, the rotating speed signal and the position signal of the motor;
and the control unit is connected with the digital signal processing unit and used for filtering each acquired phase current to obtain harmonic current and obtaining a period effective value corresponding to the harmonic current based on each harmonic current.
7. The fault-tolerant motor turn-to-turn short circuit fault diagnosis device according to claim 5 or 6, further comprising:
and the digital control circuit is connected with the motor through the fault-tolerant power driver, and the fault-tolerant power driver is used for controlling the motor according to the optimal torque fault-tolerant control signal.
8. The fault-tolerant motor turn-to-turn short circuit fault diagnosis device of claim 7, wherein the fault-tolerant power driver comprises:
the drive isolation circuit is used for realizing electrical isolation among the windings of the motor;
the H-bridge power conversion circuit is used for independently supplying power to each phase winding of the motor based on the optimal torque fault-tolerant control signal;
the digital control circuit is connected with the motor after passing through the drive isolation circuit and the H-bridge power conversion circuit in sequence.
9. The fault-tolerant motor turn-to-turn short circuit fault diagnosis device of claim 6, further comprising:
and the digital control circuit is respectively connected with the current sensor and the rotary transformer after passing through the signal detection circuit, and the signal detection circuit is used for decoding the acquired signals.
10. The fault-tolerant motor turn-to-turn short circuit fault diagnosis device of claim 9, wherein the signal detection circuit comprises:
the digital control circuit is connected with each current sensor after passing through the current signal acquisition unit, and the current signal acquisition unit is used for acquiring each phase current;
and the digital control circuit is connected with the rotary transformer after passing through the rotary transformer demodulation unit, and the rotary transformer demodulation unit is used for acquiring a rotating speed signal and a position signal of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210954883.4A CN115308596A (en) | 2022-08-10 | 2022-08-10 | Fault-tolerant motor turn-to-turn short circuit fault diagnosis method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210954883.4A CN115308596A (en) | 2022-08-10 | 2022-08-10 | Fault-tolerant motor turn-to-turn short circuit fault diagnosis method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115308596A true CN115308596A (en) | 2022-11-08 |
Family
ID=83860206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210954883.4A Pending CN115308596A (en) | 2022-08-10 | 2022-08-10 | Fault-tolerant motor turn-to-turn short circuit fault diagnosis method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115308596A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115993532A (en) * | 2023-02-28 | 2023-04-21 | 南方电网调峰调频发电有限公司检修试验分公司 | Short-circuit current-rising characteristic test method and device for generator |
| CN116008802A (en) * | 2022-12-09 | 2023-04-25 | 中国船舶重工集团公司第七一九研究所 | Portable motor detection device and detection method thereof |
-
2022
- 2022-08-10 CN CN202210954883.4A patent/CN115308596A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116008802A (en) * | 2022-12-09 | 2023-04-25 | 中国船舶重工集团公司第七一九研究所 | Portable motor detection device and detection method thereof |
| CN116008802B (en) * | 2022-12-09 | 2024-02-20 | 中国船舶重工集团公司第七一九研究所 | Portable motor detection device and detection method thereof |
| CN115993532A (en) * | 2023-02-28 | 2023-04-21 | 南方电网调峰调频发电有限公司检修试验分公司 | Short-circuit current-rising characteristic test method and device for generator |
| CN115993532B (en) * | 2023-02-28 | 2023-07-21 | 南方电网调峰调频发电有限公司检修试验分公司 | Short-circuit current-rising characteristic test method and device for generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108776306B (en) | Intelligent diagnosis device and method for faults of permanent magnet motor | |
| CN115308596A (en) | Fault-tolerant motor turn-to-turn short circuit fault diagnosis method and device | |
| Nandi et al. | Fault diagnosis of electrical machines-a review | |
| Liu et al. | Online rotor mixed fault diagnosis way based on spectrum analysis of instantaneous power in squirrel cage induction motors | |
| Kim et al. | Online fault-detecting scheme of an inverter-fed permanent magnet synchronous motor under stator winding shorted turn and inverter switch open | |
| CN109696627B (en) | Method and device for diagnosing open-phase fault of three-phase power line of motor of electric vehicle | |
| Rosero et al. | On the short-circuiting fault detection in a PMSM by means of stator current transformations | |
| CN111123104B (en) | Permanent magnet motor winding fault diagnosis method without prior knowledge | |
| CN110618381A (en) | Method and device for detecting turn-to-turn short circuit fault of stator winding of three-phase permanent magnet synchronous motor | |
| CN106841901A (en) | A kind of transducer drive IPM synchronous motor interturn in stator windings short trouble diagnostic method | |
| Wang et al. | Detection and evaluation of the interturn short circuit fault in a BLDC-based hub motor | |
| CN107024655A (en) | A kind of permanent-magnetic synchronous motor stator winding failure diagnostic method | |
| CA2772805A1 (en) | Position sensing circuit for brushless motors | |
| Duque-Perez et al. | Diagnosis of induction motors fed by supplies with high harmonic content using motor current signature analysis | |
| Sui et al. | Short-circuit fault detection for a five-phase 30-slot/32-pole permanent-magnet synchronous machine | |
| Lee et al. | Diagnosis of interturn short-circuit fault in PMSM by residual voltage analysis | |
| Pietrzak et al. | Stator phase current STFT analysis for the PMSM stator winding fault diagnosis | |
| Sen et al. | A fast detection technique for stator inter-turn fault in multi-phase permanent magnet machines using model based approach | |
| Siddiqui et al. | Early; diagnosis of stator inter-turn fault in inverter driven induction motor by wavelet transform | |
| CN111123102A (en) | Fault diagnosis method for permanent magnet fault-tolerant motor driving system | |
| Dlamini et al. | Autonomous detection of interturn stator faults in induction motors | |
| CN114217144B (en) | Method for detecting open phase in operation of three-phase permanent magnet synchronous motor | |
| CN113687151B (en) | Open-phase detection method, device, motor, electrical equipment and medium | |
| EP2337216B1 (en) | Dual purpose permanent magnets for a speed sensor and a generator | |
| Sun et al. | High frequency voltage injection based fault detection of rotating rectifier for Three-stage synchronous starter/generator in the stationary state |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |