WO2012093190A2 - Dispositif de diagnostic de pannes de court-circuit pour des moteurs synchrones à aimants permanents et procédé d'utilisation de ce dernier - Google Patents

Dispositif de diagnostic de pannes de court-circuit pour des moteurs synchrones à aimants permanents et procédé d'utilisation de ce dernier Download PDF

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Publication number
WO2012093190A2
WO2012093190A2 PCT/ES2012/000001 ES2012000001W WO2012093190A2 WO 2012093190 A2 WO2012093190 A2 WO 2012093190A2 ES 2012000001 W ES2012000001 W ES 2012000001W WO 2012093190 A2 WO2012093190 A2 WO 2012093190A2
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
motor
homopolar
diagnostic device
harmonics
Prior art date
Application number
PCT/ES2012/000001
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English (en)
Spanish (es)
Other versions
WO2012093190A3 (fr
Inventor
Julio Cesar URRESTY BETANCOURT
Jordi Roger RIBA RUIZ
José Luis ROMERAL MARTÍNEZ
Original Assignee
Universitat Politècnica De Catalunya
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Universitat Politècnica De Catalunya filed Critical Universitat Politècnica De Catalunya
Publication of WO2012093190A2 publication Critical patent/WO2012093190A2/fr
Publication of WO2012093190A3 publication Critical patent/WO2012093190A3/fr

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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
    • 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
    • G01R31/343—Testing dynamo-electric machines in operation
    • 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

Definitions

  • the present invention relates to a system for detecting incipient short circuits between turns of the stator applied to multiphase motors of alternating current.
  • MSIP permanent magnet synchronous motors
  • these short circuits are generated in the turns of the stator windings.
  • the technique used to detect incipient short circuits is based on the measurement of homopolar voltage.
  • the MSIP motors are powered by an electronic converter, also called an inverter, which allows the speed and torque of the motor to be regulated in a controlled manner.
  • the inverter feeds directly from the three-phase power outlet and generates a three-phase system of variable frequency voltages.
  • Said inverter incorporates sensors of current, voltage and position / speed of the motor as well as of an electronic microprocessor that processes the signals of said sensors in order to generate at each moment a three-phase voltage system suitable for the operating regime of the motor.
  • MSIP engines are used to drive industrial machinery, industrial robots, elevators, centrifugation systems and are also used in the aeronautical sector (engines to drive aircraft spoilers, etc.) as well as in the automobile sector (especially as a traction motor for electric vehicles among other applications).
  • the present invention aims at detecting short circuits at the time of its formation, so that it can be operated before the MSIP engine suffers irreversible problems or that a catastrophic situation can be reached.
  • the technique used to detect incipient short circuits is based on the measurement of homopolar voltage.
  • the present invention aims at monitoring and analyzing the harmonic content of the homopolar voltage to detect the short circuits between turns of the MSIP motor stator in its incipient state. That is, the prediction and analysis of defects before they occur catastrophically. This is done online, that is, in real time.
  • the SIP motor diagnostic system and procedure according to the present invention is based on the measurement, monitoring and analysis of the homopolar voltage. It is a particularly advantageous embodiment since it allows a real-time diagnosis minimizing the number of additional necessary components. It also offers a simple and robust diagnosis of the incipient short circuits in the stator coils of said motors.
  • the present invention integrates a voltage sensor for the measurement of homopolar voltage, an optional speed sensor, a network of three identical or balanced resistors to form an artificial neutral as well as a signal acquisition and processing system.
  • the proposed diagnostic system can be applied to engines that operate industrial machinery (for example in papermaking machines), industrial robots, elevators, centrifugation systems, aeronautical sector (engines to drive ailerons of aircraft, etc.) as well as the automobile sector (especially as motor and traction for electric vehicles among other applications).
  • a device has been developed that, based on the acquisition of two MSIP motor signals, the homopolar voltage and the motor rotation speed, is capable of detecting incipient short circuits in the stator coils of said motor.
  • the proposed system consists in measuring the homopolar voltage of a healthy motor in the manner indicated in Figure 1. If it incorporates a speed sensor, it also measures the motor speed or, if not, calculates it. From these two measurements calculate the spectrum of frequencies of the homopolar voltage and locates the harmonics that provide information relative to the fault. The process is repeated in real time while the engine is running and the maximum values of amplitudes of I or, 5th and 7th harmonics ° with reference values obtained for the healthy motor are compared. Increases in the amplitudes of these three harmonics indicate the existence of short circuits in the stator coils of the analyzed MSIP motor.
  • FIG. 1 MSIP motor powered through an electronic inverter.
  • the inverter, the stator winding connections, the short-circuited turns and the network of three balanced resistors used to generate the artificial neutral are shown.
  • Figure 2. MSIP motor powered by the electronic inverter with the position and speed sensors.
  • Figure 3. Complete spectrum of the homopolar voltage obtained in an MSIP motor that has 4 turns in short circuit and in a healthy one with a speed of 6000 rpm.
  • Figure 4. Spectrum of the homopolar voltage obtained in an MSIP motor that has 4 turns in short circuit and in a healthy one with a speed of 6000 rpm. Detail of the first harmonic.
  • Figure 5. Homopolar voltage spectrum obtained in an MSIP motor that has 4 turns in short circuit and in a healthy one with a speed of 6000 rpm. Detail of the fifth harmonic.
  • the development consists of a device for detecting incipient short circuits between turns of the stator applied to multiphase motors of alternating current. It is characterized by the fact that it performs the detection through the analysis of the homopolar voltage, the evaluation of the harmonic content of the same and finally the extraction of a fault parameter.
  • the device is developed in an embedded system, characterized in that it comprises:
  • a voltage sensor for measuring homopolar voltage • a voltage sensor for measuring homopolar voltage.
  • an AV 100-50 sensor from the LEM manufacturer is used, with a measuring voltage range of ⁇ 75 V powered by a ⁇ 12 V power supply.
  • a signal processing system based on DSP in specifically a 32-bit floating point DSP, such as ADSP-21369 Analog Devices.
  • the acquisition frequency is at least 10 kHz.
  • the short circuit detection method comprises the following steps: a) Calibration of harmonic levels with sound motor.
  • an acquisition of the homopolar voltage is carried out by performing a speed sweep (600 rpm at 6000rpm) with 500 rpm steps.
  • the number of samples per acquisition must be at least 8196.
  • the harmonic of greater amplitude is found (it is the third) and the motor speed is determined from the frequency of the third harmonic.
  • the harmonic of greater amplitude is found (it is the third) and the motor speed is determined from the frequency of the third harmonic.
  • the normalized amplitude of harmonics I o , 5 ° and 7 ° is determined.
  • the fault indicator that quantifies the differences between sound motor and motor with fault is based on the weighted distance between the amplitudes of the harmonics of the sound motor and the motor under analysis.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

La présente invention concerne un dispositif et un procédé de diagnostic de courts-circuits dans des moteurs électriques à courant alternatif. Le dispositif est constitué d'un ensemble de trois résistances identiques disposées en étoile formant un potentiel zéro flottant, d'un détecteur de tension qui mesure la tension homopolaire et d'un système électronique qui permet de réaliser un traitement fréquentiel du signal de tension tenant compte de la vitesse de rotation du moteur.
PCT/ES2012/000001 2011-01-05 2012-01-04 Dispositif de diagnostic de pannes de court-circuit pour des moteurs synchrones à aimants permanents et procédé d'utilisation de ce dernier WO2012093190A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201130006A ES2388973B1 (es) 2011-01-05 2011-01-05 Equipo de diagnóstico de fallos de corto circuito para motores síncronos de imanes permanentes y método de utilización de este.
ESP201130006 2011-01-05

Publications (2)

Publication Number Publication Date
WO2012093190A2 true WO2012093190A2 (fr) 2012-07-12
WO2012093190A3 WO2012093190A3 (fr) 2012-08-30

Family

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Family Applications (1)

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PCT/ES2012/000001 WO2012093190A2 (fr) 2011-01-05 2012-01-04 Dispositif de diagnostic de pannes de court-circuit pour des moteurs synchrones à aimants permanents et procédé d'utilisation de ce dernier

Country Status (2)

Country Link
ES (1) ES2388973B1 (fr)
WO (1) WO2012093190A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106019045A (zh) * 2016-05-16 2016-10-12 安徽大学 一种永磁同步电机匝间短路故障诊断的方法
CN107024655A (zh) * 2017-04-06 2017-08-08 安徽大学 一种永磁同步电机定子绕组故障诊断方法
CN108008235A (zh) * 2017-11-17 2018-05-08 珠海格力电器股份有限公司 直流母线短路检测方法、装置及检测电路
CN109768750A (zh) * 2018-12-11 2019-05-17 天津大学 基于扩展虚拟三相的开绕组永磁电机零序电流抑制方法
CN110426593A (zh) * 2019-08-22 2019-11-08 苏州银蕨电力科技有限公司 一种基于零序电压启动的单相接地故障定位方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101202436A (zh) * 2007-12-14 2008-06-18 国电南京自动化股份有限公司 三次谐波增量制动专用定子匝间保护

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101202436A (zh) * 2007-12-14 2008-06-18 国电南京自动化股份有限公司 三次谐波增量制动专用定子匝间保护

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GARCIA ET AL.: 'Diagnostics of Induction Machines Using the Zero Sequence Voltage' INDUSTRY APPLICATIONS CONFERENCE, 2004. 39TH IAS ANNUAL MEETING. CONFERENCE RECORD OF THE 2004 IEEE vol. 2, 03 October 2004, pages 735 - 742 *
URRESTY ET AL.: 'Detection of Inter-Turns Short Circuits in Permanent Magnet Synchronous Motors Operating under Transient Conditions by Means of the Zero Sequence Voltage' POWER ELECTRONICS AND APPLICATIONS (EPE 2011), PROCEEDINGS OF THE 2011-14TH EUROPEAN CONFERENCE ON, [Online] 30 August 2011, pages 1 - 9 Retrieved from the Internet: <URL:http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6020227&isnumber=6020091> *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106019045A (zh) * 2016-05-16 2016-10-12 安徽大学 一种永磁同步电机匝间短路故障诊断的方法
CN107024655A (zh) * 2017-04-06 2017-08-08 安徽大学 一种永磁同步电机定子绕组故障诊断方法
CN108008235A (zh) * 2017-11-17 2018-05-08 珠海格力电器股份有限公司 直流母线短路检测方法、装置及检测电路
CN109768750A (zh) * 2018-12-11 2019-05-17 天津大学 基于扩展虚拟三相的开绕组永磁电机零序电流抑制方法
CN110426593A (zh) * 2019-08-22 2019-11-08 苏州银蕨电力科技有限公司 一种基于零序电压启动的单相接地故障定位方法

Also Published As

Publication number Publication date
ES2388973B1 (es) 2013-11-04
ES2388973A1 (es) 2012-10-22
WO2012093190A3 (fr) 2012-08-30

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