CN110470857B - Rotating speed detection method suitable for aviation power system generator - Google Patents
Rotating speed detection method suitable for aviation power system generator Download PDFInfo
- Publication number
- CN110470857B CN110470857B CN201910845283.2A CN201910845283A CN110470857B CN 110470857 B CN110470857 B CN 110470857B CN 201910845283 A CN201910845283 A CN 201910845283A CN 110470857 B CN110470857 B CN 110470857B
- Authority
- CN
- China
- Prior art keywords
- phase
- signal
- rotating speed
- generator
- speed detection
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
Abstract
The invention provides a rotating speed detection method suitable for an aviation power supply system generator. The method comprises the steps of firstly converting a three-phase power supply of a permanent magnet machine into two-phase analog alternating-current voltage signals through a transformer, then conditioning the analog alternating-current voltage signals to obtain digital signals with the same frequency, and finally acquiring the digital signals through software to process the digital signals to obtain the rotating speed of the generator. The conditioning circuit adopts a double-diode voltage clamping structure, so that the structural complexity and the cost of the signal conditioning circuit can be reduced, and the analog voltage signal can be converted into a digital signal. The method effectively inhibits the interference of the rotation speed detection and improves the accuracy and the reliability of the rotation speed detection.
Description
Technical Field
The invention belongs to the technical field of generator rotation speed detection under the condition of frequency conversion, and relates to a rotation speed detection method suitable for an aviation power supply system generator.
Background
Many-electric and all-electric aircraft have become a general trend in the development of modern aviation technology. The mainstream trend of the power supply system of the multi-electric and all-electric aircraft is to adopt a high-capacity variable-speed variable-frequency alternating current power generation technology to generate variable-frequency alternating current of 360-800 Hz. With the requirement of aviation systems on the quality of electric energy being higher and higher, the control requirement on the generator is more and more accurate. The rotating speed of the generator is an important parameter for controlling the generator in real time by the aviation power supply system. In the working environment of the generator, the rotating speed measuring circuit is subjected to electromagnetic interference of the generator on one hand and common-mode interference of the output circuit on the other hand, so that how to improve the accuracy and reliability of the rotating speed detection of the generator is a technical difficulty of an aviation power supply system.
At present, the rotating speed detection methods of the aircraft power system generator mainly comprise the following two methods, one method is to install a sensor on the aircraft power system generator as an auxiliary, such as a hall sensor, a decoder and the like, the existing device of the generator needs to be disassembled and assembled, the sensor is easy to be damaged by environmental interference, and the service life of the generator is shortened. The other method is to detect the voltage of a phase winding of the generator, and calculate the rotating speed of the generator by utilizing the relation between the phase voltage and the rotating speed of the power shaft after the phase voltage is processed by a voltage reduction circuit and a phase-locked loop circuit.
Disclosure of Invention
The invention provides a rotating speed detection method suitable for an aircraft power system generator, which aims to solve the problems in the prior art.
The specific technical scheme of the invention is as follows:
the rotating speed detection method for the aviation power system generator is characterized by comprising the following steps of: the method comprises the following steps:
step 1: respectively connecting two phases of three-phase voltages of a permanent magnet motor of the aviation power supply system with the primary sides of two transformers, and connecting the other phase of the three-phase voltages in series with the primary sides of the two transformers; the secondary sides of the two transformers output two-phase analog alternating-current voltage signals, and are also connected in series through GND;
step 2: the two-phase analog alternating voltage signals obtained in the step 1 pass through a conditioning circuit to obtain digital signals with the same frequency;
and step 3: and sending the digital signals with the same frequency into a digital signal processor, and calculating to obtain the rotating speed value of the generator after filtering.
In a further preferred aspect, the method for detecting the rotation speed of the generator of the aviation power supply system is characterized in that: the permanent magnet machine of the aviation power supply system outputs three-phase voltage in the step 1: a PMG A phase, a PMG B phase and a PMG C phase; the A phase and the C phase are respectively connected with two primary sides of the transformer, and the primary sides of the two transformers are connected together in series through the B phase; the two secondary sides of the transformer respectively output a positive analog alternating voltage signal and a negative analog alternating voltage signal, and are connected in series through GND.
In a further preferred aspect, the method for detecting the rotation speed of the generator of the aviation power supply system is characterized in that: in the conditioning circuit in the step 2, two diodes are positively and negatively connected between the analog alternating voltage signal positive and the analog alternating voltage signal negative, then the two processed voltage signals are respectively sent to the positive end and the negative end of the comparator, when the signal of the positive end of the comparator is higher than the signal of the negative end of the comparator, the output digital signal is high, and when the signal of the positive end of the comparator is lower than the signal of the negative end of the comparator, the output digital signal is low, so that the digital signal with the same frequency is obtained.
In a further preferred aspect, the method for detecting the rotation speed of the generator of the aviation power supply system is characterized in that: in step 3, if the frequency of the digital signal obtained after the filtering process is f, the rotating speed value v of the generator is 60f/p, where p is the pole pair number of the rotating magnetic field of the motor.
Advantageous effects
The invention provides a rotating speed detection method suitable for an aviation power supply system generator. The method comprises the steps of firstly converting a three-phase power supply of a permanent magnet machine into two-phase analog alternating-current voltage signals through a transformer, then conditioning the analog alternating-current voltage signals to obtain digital signals with the same frequency, and finally acquiring the digital signals through software to process the digital signals to obtain the rotating speed of the generator. The conditioning circuit adopts a double-diode voltage clamping structure, so that the structural complexity and the cost of the signal conditioning circuit can be reduced, and the analog voltage signal can be converted into a digital signal. The method effectively inhibits the interference of the rotation speed detection and improves the accuracy and the reliability of the rotation speed detection.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a permanent magnet motor in which three-phase voltage is converted into two-phase analog AC voltage signals by a transformer;
FIG. 2 is an overall architecture diagram for software online loading.
Detailed Description
The following detailed description of embodiments of the invention is intended to be illustrative, and not to be construed as limiting the invention.
The invention comprises modules of a permanent magnet machine, a transformer, a conditioning circuit, software acquisition and calculation and the like, and the specific implementation example is as follows:
1) three-phase voltage of permanent magnet motor is converted into two-phase analog AC voltage signal by transformer
As shown in fig. 1, the permanent magnet machine of the aviation power supply system outputs three-phase voltages, which are respectively: PMG A phase, PMG B phase and PMG C phase. The phase A and the phase C are respectively connected with the primary sides of two transformers, and the primary sides of the two transformers are connected together in series through the phase B. The two transformer secondary sides respectively output an analog alternating current voltage signal positive and an analog alternating current voltage signal negative, and are connected in series through GND. Thus, the three-phase voltage signal of the permanent magnet motor outputs a two-phase analog alternating current voltage signal through the two transformers.
2) And conditioning the analog AC voltage signal to obtain digital signal with the same frequency
As shown in fig. 2, the two-phase analog ac voltage signal output from the transformer passes through the conditioning circuit to obtain a digital signal with the same frequency. The conditioning circuit adopts a double-diode voltage clamping function, namely two diodes are positively and negatively connected between an analog alternating voltage signal positive and an analog alternating voltage signal negative, then the two processed voltage signals are respectively sent to a comparator positive end and a comparator negative end, and when the comparator positive end signal is higher than the comparator negative end signal, a digital signal is output to be high; when the comparator positive terminal signal is lower than the comparator negative terminal signal, the output digital signal is low. Therefore, the two-phase analog alternating voltage signal output by the transformer is conditioned into a digital signal with the same frequency and is output.
3) Acquiring digital signals by software and processing the digital signals to obtain the rotating speed of the generator
The digital signals with the same frequency output by the conditioning circuit shown in fig. 2 are sent to a digital signal processor, and after the digital signals are collected by software, filtering processing is carried out, and then the rotating speed value of the generator is calculated. The specific calculation method is as follows: and if the frequency of the acquired digital signal is f, the rotating speed value v of the generator is 60f/p, wherein p is the pole pair number of the rotating magnetic field of the motor. For example, when p is 6, if the frequency of the acquired digital signal is 800Hz, the rotating speed value of the generator is 8000 r/min.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (3)
1. A rotating speed detection method for an aviation power system generator is characterized by comprising the following steps: the method comprises the following steps:
step 1: respectively connecting two phases of three-phase voltages of a permanent magnet motor of the aviation power supply system with the primary sides of two transformers, and connecting the other phase of the three-phase voltages in series with the primary sides of the two transformers; the secondary sides of the two transformers output two-phase analog alternating-current voltage signals, and are also connected in series through GND;
step 2: the two-phase analog alternating voltage signals obtained in the step 1 pass through a conditioning circuit to obtain digital signals with the same frequency;
in the conditioning circuit, two diodes are connected between the positive side and the negative side of an analog alternating voltage signal in a positive-negative mode, then the two processed voltage signals are respectively sent to the positive end and the negative end of a comparator, when the signal of the positive end of the comparator is higher than the signal of the negative end of the comparator, the output digital signal is high, and when the signal of the positive end of the comparator is lower than the signal of the negative end of the comparator, the output digital signal is low, so that the digital signals with the same frequency are obtained;
and step 3: and sending the digital signals with the same frequency into a digital signal processor, and calculating to obtain the rotating speed value of the generator after filtering.
2. The rotating speed detection method for the aviation power supply system generator according to claim 1, characterized in that: the permanent magnet machine of the aviation power supply system outputs three-phase voltage in the step 1: a PMG A phase, a PMG B phase and a PMG C phase; the A phase and the C phase are respectively connected with two primary sides of the transformer, and the primary sides of the two transformers are connected together in series through the B phase; the two secondary sides of the transformer respectively output a positive analog alternating voltage signal and a negative analog alternating voltage signal, and are connected in series through GND.
3. The rotating speed detection method for the aviation power supply system generator according to claim 1, characterized in that: in step 3, if the frequency of the digital signal obtained after the filtering process is f, the rotating speed value v of the generator is 60f/p, where p is the pole pair number of the rotating magnetic field of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910845283.2A CN110470857B (en) | 2019-09-08 | 2019-09-08 | Rotating speed detection method suitable for aviation power system generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910845283.2A CN110470857B (en) | 2019-09-08 | 2019-09-08 | Rotating speed detection method suitable for aviation power system generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110470857A CN110470857A (en) | 2019-11-19 |
| CN110470857B true CN110470857B (en) | 2021-04-13 |
Family
ID=68515159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910845283.2A Active CN110470857B (en) | 2019-09-08 | 2019-09-08 | Rotating speed detection method suitable for aviation power system generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110470857B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181454A (en) * | 2019-12-05 | 2020-05-19 | 陕西航空电气有限责任公司 | Wide output range's frequency conversion alternator controller power supply circuit |
Citations (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB924387A (en) * | 1960-05-09 | 1963-04-24 | Rolls Royce | Improvements in and relating to frequency multiplying apparatus |
| GB1204876A (en) * | 1967-09-29 | 1970-09-09 | Kb Termopribor | A device for determining the value and direction of the angular speed of rotation of machine parts |
| US3757128A (en) * | 1972-03-20 | 1973-09-04 | Ibm | Multiphase tachometer |
| DE1763294B2 (en) * | 1968-04-30 | 1976-05-13 | N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) | ARRANGEMENT FOR THE FORMATION OF A SPEED PROPORTIONAL VOLTAGE |
| SU657347A1 (en) * | 1976-11-09 | 1979-04-15 | Организация П/Я В-8413 | Induction motor operation monitoring device |
| SU754311A1 (en) * | 1978-03-21 | 1980-08-07 | Eduard A Samvelyan | Rotational speed-to-pulse train converter |
| DE3830164A1 (en) * | 1988-09-05 | 1990-03-15 | Loewe Pumpenfabrik Gmbh | Method for rotational speed measurement on electric motors |
| EP0770877A1 (en) * | 1995-10-27 | 1997-05-02 | Elan Schaltelemente GmbH | Method for monitoring a stationary condition or rotational speed during set-up of a drive system, in particular a fast response servo control system, and power relays for use with such a method |
| EP0780689A1 (en) * | 1995-12-21 | 1997-06-25 | GRUNDIG Aktiengesellschaft | Method and circuit arrangement for determining the rotational speed of an internal combustion engine coupled with a generator |
| DE19650403B4 (en) * | 1996-12-05 | 2004-04-22 | Grundfos A/S | Procedure for determining outlet speed and / or direction of rotation |
| CN1591022A (en) * | 2003-09-02 | 2005-03-09 | 成都希望电子研究所 | Apparatus for testing rotating speed of asynchronous motor |
| CN101297210A (en) * | 2006-01-31 | 2008-10-29 | 三菱电机株式会社 | Relict flux measuring device |
| CN101425769A (en) * | 2008-12-05 | 2009-05-06 | 江苏大学 | Method for fast detecting position of non-position sensor three-phase permanent magnet synchronous motor rotor |
| CN101452007A (en) * | 2008-12-25 | 2009-06-10 | 中国北车集团大连机车车辆有限公司 | Diesel engine rotating velocity measurement method and apparatus for diesel locomotive |
| CN101666810A (en) * | 2008-09-04 | 2010-03-10 | Abb公司 | Method and arrangement for determining rotation speed of a motor |
| CN102621345A (en) * | 2012-04-10 | 2012-08-01 | 西北工业大学 | Detection method and device of rotation speed of generator |
| RU2011104945A (en) * | 2011-02-10 | 2012-08-20 | Негосударственное образовательное учреждение высшего профессионального образования (НОУ ВПО) "Академический институт прикладной энер | METHOD FOR DETERMINING THE ROTATION SPEED OF SUBMERSIBLE ASYNCHRONOUS ELECTRIC MOTORS |
| CN102981014A (en) * | 2012-12-11 | 2013-03-20 | 北京金风科创风电设备有限公司 | Generator rotating speed measuring equipment and method of wind generating set |
| CN202855523U (en) * | 2012-08-27 | 2013-04-03 | 日本精工株式会社 | Rotary transformer device, direct drive motor system and angle position detection device |
| CN202975035U (en) * | 2012-11-05 | 2013-06-05 | 贵州航天林泉电机有限公司 | Device acquiring generator rotation speed signal from phase current |
| CN103323617A (en) * | 2013-06-08 | 2013-09-25 | 广东明阳龙源电力电子有限公司 | Static electronic speed testing device and method for generator |
| CN103604943A (en) * | 2013-11-15 | 2014-02-26 | 中科恒源科技股份有限公司 | A wind driven generator rotating speed measurement circuit |
| CN103630702A (en) * | 2013-11-05 | 2014-03-12 | 成都发动机（集团）有限公司 | Electrical-isolation accurate digital type measuring interface circuit for alternating current speed measuring motor |
| CN104584155A (en) * | 2012-08-23 | 2015-04-29 | 伊斯帕诺-絮扎公司 | Three-phase/two-phase rotary transformer including a Scott connection |
| CN104975966A (en) * | 2014-04-01 | 2015-10-14 | 罗伯特·博世有限公司 | Method for determining a rotational speed |
| CN107219375A (en) * | 2017-05-27 | 2017-09-29 | 四川新川航空仪器有限责任公司 | It is a kind of to realize the method measured during tach signal high-precision real |
| CN108089022A (en) * | 2017-11-08 | 2018-05-29 | 陕西航空电气有限责任公司 | A kind of adaptive frequency pressure conversion modulate circuit |
| CN109891072A (en) * | 2016-11-02 | 2019-06-14 | 罗伯特·博世有限公司 | Method for determining the rotary angle position of the crankshaft of internal combustion engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10242334B4 (en) * | 2002-09-12 | 2011-12-22 | Robert Bosch Gmbh | Method and device for measuring the speed of a clocked controlled electric motor |
-
2019
- 2019-09-08 CN CN201910845283.2A patent/CN110470857B/en active Active
Patent Citations (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB924387A (en) * | 1960-05-09 | 1963-04-24 | Rolls Royce | Improvements in and relating to frequency multiplying apparatus |
| GB1204876A (en) * | 1967-09-29 | 1970-09-09 | Kb Termopribor | A device for determining the value and direction of the angular speed of rotation of machine parts |
| DE1763294B2 (en) * | 1968-04-30 | 1976-05-13 | N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) | ARRANGEMENT FOR THE FORMATION OF A SPEED PROPORTIONAL VOLTAGE |
| US3757128A (en) * | 1972-03-20 | 1973-09-04 | Ibm | Multiphase tachometer |
| SU657347A1 (en) * | 1976-11-09 | 1979-04-15 | Организация П/Я В-8413 | Induction motor operation monitoring device |
| SU754311A1 (en) * | 1978-03-21 | 1980-08-07 | Eduard A Samvelyan | Rotational speed-to-pulse train converter |
| DE3830164A1 (en) * | 1988-09-05 | 1990-03-15 | Loewe Pumpenfabrik Gmbh | Method for rotational speed measurement on electric motors |
| EP0770877A1 (en) * | 1995-10-27 | 1997-05-02 | Elan Schaltelemente GmbH | Method for monitoring a stationary condition or rotational speed during set-up of a drive system, in particular a fast response servo control system, and power relays for use with such a method |
| EP0780689A1 (en) * | 1995-12-21 | 1997-06-25 | GRUNDIG Aktiengesellschaft | Method and circuit arrangement for determining the rotational speed of an internal combustion engine coupled with a generator |
| DE19650403B4 (en) * | 1996-12-05 | 2004-04-22 | Grundfos A/S | Procedure for determining outlet speed and / or direction of rotation |
| CN1591022A (en) * | 2003-09-02 | 2005-03-09 | 成都希望电子研究所 | Apparatus for testing rotating speed of asynchronous motor |
| CN101297210A (en) * | 2006-01-31 | 2008-10-29 | 三菱电机株式会社 | Relict flux measuring device |
| CN101666810A (en) * | 2008-09-04 | 2010-03-10 | Abb公司 | Method and arrangement for determining rotation speed of a motor |
| CN101425769A (en) * | 2008-12-05 | 2009-05-06 | 江苏大学 | Method for fast detecting position of non-position sensor three-phase permanent magnet synchronous motor rotor |
| CN101452007A (en) * | 2008-12-25 | 2009-06-10 | 中国北车集团大连机车车辆有限公司 | Diesel engine rotating velocity measurement method and apparatus for diesel locomotive |
| RU2011104945A (en) * | 2011-02-10 | 2012-08-20 | Негосударственное образовательное учреждение высшего профессионального образования (НОУ ВПО) "Академический институт прикладной энер | METHOD FOR DETERMINING THE ROTATION SPEED OF SUBMERSIBLE ASYNCHRONOUS ELECTRIC MOTORS |
| CN102621345A (en) * | 2012-04-10 | 2012-08-01 | 西北工业大学 | Detection method and device of rotation speed of generator |
| CN104584155A (en) * | 2012-08-23 | 2015-04-29 | 伊斯帕诺-絮扎公司 | Three-phase/two-phase rotary transformer including a Scott connection |
| CN202855523U (en) * | 2012-08-27 | 2013-04-03 | 日本精工株式会社 | Rotary transformer device, direct drive motor system and angle position detection device |
| CN202975035U (en) * | 2012-11-05 | 2013-06-05 | 贵州航天林泉电机有限公司 | Device acquiring generator rotation speed signal from phase current |
| CN102981014A (en) * | 2012-12-11 | 2013-03-20 | 北京金风科创风电设备有限公司 | Generator rotating speed measuring equipment and method of wind generating set |
| CN103323617A (en) * | 2013-06-08 | 2013-09-25 | 广东明阳龙源电力电子有限公司 | Static electronic speed testing device and method for generator |
| CN103630702A (en) * | 2013-11-05 | 2014-03-12 | 成都发动机（集团）有限公司 | Electrical-isolation accurate digital type measuring interface circuit for alternating current speed measuring motor |
| CN103604943A (en) * | 2013-11-15 | 2014-02-26 | 中科恒源科技股份有限公司 | A wind driven generator rotating speed measurement circuit |
| CN104975966A (en) * | 2014-04-01 | 2015-10-14 | 罗伯特·博世有限公司 | Method for determining a rotational speed |
| CN109891072A (en) * | 2016-11-02 | 2019-06-14 | 罗伯特·博世有限公司 | Method for determining the rotary angle position of the crankshaft of internal combustion engine |
| CN107219375A (en) * | 2017-05-27 | 2017-09-29 | 四川新川航空仪器有限责任公司 | It is a kind of to realize the method measured during tach signal high-precision real |
| CN108089022A (en) * | 2017-11-08 | 2018-05-29 | 陕西航空电气有限责任公司 | A kind of adaptive frequency pressure conversion modulate circuit |
Non-Patent Citations (5)
| Title |
|---|
| "Development of Three-Phase HB-type Stepping Motors";Ohnishi K 等;《Transactions on Sensors & Micromachines》;20081231;第116卷(第5期);578-583页 * |
| "一种新型旋翼转速表的研制";卢建华 等;《微计算机信息》;20021231;第18卷(第1期);44-45页 * |
| "双馈电机无速度传感器控制转速辨识方法研究";刘海鹏;《万方》;20171231;全文 * |
| "基于低分辨率传感器的伺服驱动系统转速估算策略研究";董翔 等;《万方》;20171231;全文 * |
| "某型直升机旋翼转速表的数字化设计方案";吴光彬 等;《直升机技术》;20121231(第171期);46-50页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110470857A (en) | 2019-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7888915B2 (en) | System for detecting generator winding faults | |
| CN109596936B (en) | Double-rotating diode open-circuit fault detection method for aviation three-phase alternating-current excitation system | |
| CN106199424B (en) | Permanent magnet synchronous motor turn-to-turn short circuit fault diagnosis method | |
| EP2837942B1 (en) | Ground fault detecting circuit and power conversion device using same | |
| KR101169797B1 (en) | Fault detecting system of stator winding of motor | |
| CN108196154B (en) | Fault detection and fault positioning method for rotary rectifier of aviation three-stage synchronous motor | |
| CN104062587B (en) | Excitation type generator fault simulation system | |
| CN104155567A (en) | Positioning method of turn-to-turn short circuit fault of doubly-fed generator rotor | |
| CN102510254A (en) | Initial alignment method of permanent magnetic synchronous motor rotor of pure electric vehicle | |
| CN110470857B (en) | Rotating speed detection method suitable for aviation power system generator | |
| Wang et al. | Detection and evaluation of the interturn short circuit fault in a BLDC-based hub motor | |
| CN106501665B (en) | Hydraulic generator rotor winding interturn short-circuit diagnostic method based on detection coil | |
| Refaat et al. | Discrimination of stator winding turn fault and unbalanced supply voltage in permanent magnet synchronous motor using ANN | |
| CN103346713A (en) | Simplified algorithm of synchronous frequency conversion soft starting motor rotor position detection | |
| Boileau et al. | Back-EMF based detection of stator winding inter-turn fault for PM synchronous motor drives | |
| CN108448994B (en) | Method for rapidly estimating no-load running rotating speed of variable frequency compressor | |
| CN105262383A (en) | Rotor rotating speed/position detecting method of aero-switch reluctance starting/power generator | |
| CN105991075B (en) | power generation device | |
| CN111123102A (en) | Fault diagnosis method for permanent magnet fault-tolerant motor driving system | |
| CN106712602B (en) | Control device and control method based on position-sensor-free permanent magnet synchronous motor | |
| CN110365270A (en) | Rotation for AC magnetoelectric machine becomes zero bias setting method | |
| CN205490279U (en) | Weak magnetism control system of servo PMSM of wide range speed control | |
| Jacomini et al. | Sensorless rotor position based on MRAS observer for doubly fed induction generator | |
| CN112305421A (en) | Method for judging turn-to-turn short circuit fault of stator winding of asynchronous motor | |
| CN113484793B (en) | Phase current analysis-based turn-to-turn short circuit fault diagnosis method for permanent magnet fault-tolerant motor winding |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |