ES2388973B1 - SHORT CIRCUIT FAILURE DIAGNOSTICS EQUIPMENT FOR SYNCHRONOUS MOTORS OF PERMANENT MAGNETS AND METHOD OF USE OF THIS. - Google Patents
SHORT CIRCUIT FAILURE DIAGNOSTICS EQUIPMENT FOR SYNCHRONOUS MOTORS OF PERMANENT MAGNETS AND METHOD OF USE OF THIS. Download PDFInfo
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- ES2388973B1 ES2388973B1 ES201130006A ES201130006A ES2388973B1 ES 2388973 B1 ES2388973 B1 ES 2388973B1 ES 201130006 A ES201130006 A ES 201130006A ES 201130006 A ES201130006 A ES 201130006A ES 2388973 B1 ES2388973 B1 ES 2388973B1
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000001360 synchronised effect Effects 0.000 title abstract description 6
- 230000007935 neutral effect Effects 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000003745 diagnosis Methods 0.000 claims abstract description 5
- 238000001228 spectrum Methods 0.000 claims description 9
- 238000004458 analytical method Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 5
- 238000011156 evaluation Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000002405 diagnostic procedure Methods 0.000 claims 4
- 230000000694 effects Effects 0.000 claims 4
- 230000001419 dependent effect Effects 0.000 claims 3
- 230000003466 anti-cipated effect Effects 0.000 claims 1
- 230000033228 biological regulation Effects 0.000 claims 1
- 239000000523 sample Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- 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
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- 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
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- 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
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- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Control Of Multiple Motors (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Equipo de diagnóstico de fallos de corto circuito para motores síncronos de imanes permanentes y método de utilización de este.#Dispositivo y procedimiento de diagnóstico de cortocircuitos en motores eléctricos de corriente alterna, compuesto por un conjunto de tres resistencias idénticas dispuestas en estrella formando un neutro flotante, un sensor de tensión que mide la tensión homopolar y un sistema electrónico que permite realizar un procesado en frecuencia de la señal de tensión teniendo en cuenta la velocidad de giro del motor.Short circuit fault diagnosis equipment for permanent magnet synchronous motors and its method of use. # Device and procedure for diagnosing short circuits in electric motors of alternating current, consisting of a set of three identical resistors arranged in a star forming a neutral floating, a voltage sensor that measures the homopolar voltage and an electronic system that allows frequency processing of the voltage signal taking into account the speed of rotation of the motor.
Description
Equipo de diagnóstico de fallos de corto circuito para motores síncronos de imanes permanentes y método de utilización de este Short circuit fault diagnosis equipment for permanent magnet synchronous motors and method of use of this
La presente invención se refiere a un sistema de detección de cortocircuitos incipientes entre espiras del estator aplicado a motores polifásicos de corriente alterna. Preferentemente motores síncronos de imanes permanente (MSIP) alimentados mediante un inversor electrónico. Concretamente estos cortocircuitos se generan en las espiras de los bobinados de estator. The present invention relates to a system for detecting incipient short circuits between turns of the stator applied to multiphase motors of alternating current. Preferably permanent magnet synchronous motors (MSIP) powered by an electronic inverter. Specifically, these short circuits are generated in the turns of the stator windings.
La técnica utilizada para detectar cortocircuitos incipientes se basa en la medida de la tensión homopolar. The technique used to detect incipient short circuits is based on the measurement of homopolar voltage.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Los motores MSIP van alimentados a través de un convertidor electrónico, también llamado inversor, que permite regular la velocidad y el par del motor de manera controlada. El inversor se alimenta directamente de la toma trifásica de potencia y genera un sistema de tensiones trifásicas de frecuencia variable. Dicho inversor incorpora sensores de corriente, de tensión y de posición/velocidad del motor así como de un microprocesador electrónico que procesa las señales de dichos sensores para así generar en cada momento un sistema trifásico de tensiones adecuado para el régimen de operación del motor. 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.
Los fallos de corto circuito en espiras del estator son muy destructivos, de modo que si no se detectan a tiempo acaban deteriorando irreversiblemente el motor, acabando este fuera de servicio. The short-circuit faults in turns of the stator are very destructive, so that if they are not detected in time they end up irreversibly deteriorating the motor, finishing this out of service.
Los motores MSIP se utilizan para accionar maquinaria industrial, robots industriales, ascensores, sistemas de centrifugación y también se utilizan en el sector aeronáutico (motores para accionar alerones de los aviones, etc.) así como en el sector automovilístico (especialmente como motor de tracción para vehículos eléctricos entre otras aplicaciones). 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 automotive sector (especially as a traction motor for electric vehicles among other applications).
La presente invención tiene por objeto la detección de cortocircuitos en el momento de su formación, de modo que se pueda actuar antes de que el motor MSIP sufra problemas irreversibles o que se pueda llegar a una situación catastrófica. La técnica utilizada para detectar cortocircuitos incipientes se basa en la medida de la tensión homopolar. 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.
Se conocen otros procedimientos, equipos y sistemas para determinar cortocircuitos entre espiras mediante la tensión homopolar, pero aplicados a otros tipos de motores, nunca para motores síncronos de imanes permanentes. Además dichos procedimientos, equipos y sistemas generalmente se basan en el cambio de la amplitud de la tensión homopolar o de la amplitud de las impedancias de secuencia negativa, mientras que la presente invención se basa en analizar el espectro en frecuencia de la tensión homopolar. Other procedures, equipment and systems are known for determining short circuits between turns by means of homopolar voltage, but applied to other types of motors, never for permanent magnet synchronous motors. Furthermore, said procedures, equipment and systems are generally based on the change in the amplitude of the homopolar voltage or the amplitude of the negative sequence impedances, while the present invention is based on analyzing the frequency spectrum of the homopolar voltage.
Los documentos US 2008/0043383 A1 y P. Garcia, F. Briz, M.W. Degner, A.B. Diez, "Diagnostics of induction machines using the zero sequence voltage," IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting 2004, vol.2, pp. 735-742, Oct. 2004 presentan métodos y sistemas para la detección de defectos utilizando técnicas muy concretas relacionadas con protecciones contra sobrecargas y cortocircuitos aplicadas a generadores síncronos de imanes permanentes (caso de la patente US 2008/0043383 A1) o bien el análisis de la tensión homopolar en motores trifásicos de inducción (caso del documento “Diagnostics of induction machines using the zero sequence voltage”). US 2008/0043383 A1 and P. Garcia, F. Briz, M.W. Degner, A.B. Ten, "Diagnostics of induction machines using the zero sequence voltage," IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting 2004, vol.2, pp. 735-742, Oct. 2004 present methods and systems for the detection of defects using very specific techniques related to protections against overloads and short circuits applied to permanent magnet synchronous generators (case of US patent 2008/0043383 A1) or the analysis of homopolar voltage in three-phase induction motors (case of the document "Diagnostics of induction machines using the zero sequence voltage").
La presente invención tiene por objeto la monitorización y el análisis del contenido armónico de la tensión homopolar para detectar los cortocircuitos entre espiras del estator de motores MSIP en su estado incipiente. Es decir, la predicción y el análisis de los defectos antes de que ocurran de manera catastrófica. Ello se hace de modo on-line, es decir, en tiempo real. 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.
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
El sistema y procedimiento de diagnóstico de motores MSIP según la presente invención se basa en la medida, monitorización y análisis de la tensión homopolar. Es una realización particularmente ventajosa ya que permite un diagnóstico en tiempo real minimizando el número de componentes necesarios adicionales. Además ofrece un diagnóstico simple y robusto de los cortocircuitos incipientes en las bobinas del estator de dichos motores. The MSIP 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.
La presente invención integra un sensor de tensión para la medida de la tensión homopolar, un sensor de velocidad opcional, una red de tres resistencias idénticas o equilibradas para formar un neutro artificial así como de un sistema de adquisición y procesado de señal. The present invention integrates a voltage sensor for measuring 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.
El sistema de diagnóstico propuesto se puede aplicar a motores que accionen maquinara industrial (por ejemplo en las máquinas de fabricación de papel), robots industriales, ascensores, sistemas de centrifugación, sector aeronáutico (motores para accionar alerones de los aviones, etc.) así como el sector automovilístico (especialmente como motor e tracción para vehículos eléctricos entre otras aplicaciones). 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).
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Se ha desarrollado un equipo que en base a la adquisición de dos señales del motor MSIP, la tensión homopolar y la velocidad de giro del motor, es capaz de detectar cortocircuitos incipientes en las bobinas del estator de dicho motor. 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.
El sistema propuesto consiste en medir la tensión homopolar de un motor sano del modo indicado en la Figura 1. En caso de incorporar sensor de velocidad también mide la velocidad del motor o, en caso de no tenerlo, la calcula. A partir de estas dos medidas calcula el espectro de frecuencias de la tensión homopolar y localiza los armónicos que proporcionan información relativa al fallo. Se repite el proceso en tiempo real, mientras el motor está en funcionamiento y se comparan los valores máximos de las amplitudes del 1º, 5º y 7º armónicos con los valores de referencia obtenidos para el motor sano. Aumentos de las amplitudes de estos tres armónicos indican la existencia de espiras en cortocircuito en las bobinas del estator del motor MSIP analizado. 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 frequency spectrum of the homopolar voltage and locate the harmonics that provide information related to the fault. The process is repeated in real time, while the engine is running and the maximum values of the amplitudes of the 1st, 5th and 7th harmonics are compared with the reference values obtained for the sound engine. Increases in the amplitudes of these three harmonics indicate the existence of short circuits in the stator coils of the analyzed MSIP motor.
Procedimiento de prueba motores comprende los siguientes pasos básicos: Motor test procedure comprises the following basic steps:
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- Adquisición de datos de tensión homopolar. Acquisition of homopolar voltage data.
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- Se calcula el espectro de la tensión homopolar. The spectrum of the homopolar voltage is calculated.
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- Estimación de la velocidad del motor. Estimation of engine speed.
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- Se determina la amplitud normalizada de los armónicos. The normalized amplitude of the harmonics is determined.
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- Se comparan los datos de amplitud normalizada de los armónicos con los resultados de calibración de motor sano. The harmonic normalized amplitude data is compared with the sound motor calibration results.
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- Cálculo de la distancia ponderada entre la amplitud de armónico como factor indicador de fallo. Calculation of the weighted distance between the harmonic amplitude as a fault indicator factor.
BREVE DESCRIPCIÓN DE LOS DIBUJOS BRIEF DESCRIPTION OF THE DRAWINGS
Para mejor comprensión de cuanto se ha expuesto se acompañan unos dibujos en los que se representa: For a better understanding of how much has been exposed, some drawings are included in which it is represented:
Figura 1. Motor MSIP alimentado a través de un inversor electrónico. Se muestra el inversor, las conexiones de los bobinados del estator, las espiras en cortocircuito y la red de tres resistencias equilibradas usadas para generar el neutro artificial. Figure 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.
Figura 2. Motor MSIP alimentado por el inversor electrónico con los sensores de posición y de velocidad. Figure 2. MSIP motor powered by the electronic inverter with the position and speed sensors.
Figura 3. Espectro completo de la tensión homopolar obtenida en un motor MSIP que tiene 4 espiras en cortocircuito y en uno sano con velocidad de 6000 rpm. 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.
Figura 4. Espectro de la tensión homopolar obtenida en un motor MSIP que tiene 4 espiras en cortocircuito y en uno sano con velocidad de 6000 rpm. Detalle del primer armónico. 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.
Figura 5. Espectro de la tensión homopolar obtenida en un motor MSIP que tiene 4 espiras en cortocircuito y en uno sano con velocidad de 6000 rpm. Detalle del quinto armónico. 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.
DESCRIPCIÓN DE UNA REALIZACIÓN PREFERIDA DESCRIPTION OF A PREFERRED EMBODIMENT
El desarrollo consiste en un dispositivo de detección de cortocircuitos incipientes entre espiras del estator aplicado a motores polifásicos de corriente alterna. Se caracteriza caracterizado por el hecho de que realiza la detección mediante el análisis de la tensión homopolar, la evaluación del contenido harmónico de la misma y finalmente la extracción de un parámetro de fallo. 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.
El dispositivo se desarrolla en un sistema embebido, que se caracteriza porque comprende: The device is developed in an embedded system, characterized in that it comprises:
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- una red de tres resistencias idénticas o equilibradas para formar un neutro artificial donde se mide la tensión homopolar. a network of three identical or balanced resistors to form an artificial neutral where homopolar tension is measured.
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- un sensor de tensión para la medida de la tensión homopolar. En concreto se utiliza un sensor AV 100-50 del fabricante LEM, con un rango de tensiones de medida de ± 75 V alimentado mediante una fuente de alimentación de ± 12 V. a voltage sensor for measuring homopolar voltage. In particular, 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.
- • •
- un sistema de procesado de señal en base a DSP, en concreto un DSP de 32 bits coma flotante, como ADSP-21369 Analog Devices. a signal processing system based on DSP, specifically a 32-bit floating point DSP, such as ADSP-21369 Analog Devices.
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- sobre el sistema DSP se aplica el método de detección de defectos. The defect detection method is applied to the DSP system.
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- la frecuencia de adquisición es de por lo menos 10 khz. The acquisition frequency is at least 10 kHz.
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- se trabaja con un mínimo de 8196 muestras. It works with a minimum of 8196 samples.
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El método de detección de cortocircuitos comprende los siguientes pasos: The short circuit detection method comprises the following steps:
a) Calibración de los niveles de armónicos con motor sano. a) Calibration of harmonic levels with sound motor.
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- Para ello se realiza una adquisición de la tensión homopolar realizando un barrido de velocidad (600 rpm a 6000rpm) con pasos de 500 rpm. El número de muestras por adquisición debe ser como mínimo de 8196. For this, 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.
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- Calcular el espectro de frecuencias para cada una de las adquisiciones a diferentes velocidades mediante la aplicación de la transformada de Fourier. Calculate the frequency spectrum for each of the acquisitions at different speeds by applying the Fourier transform.
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- Si no se tiene la información de velocidad, se encuentra el armónico de mayor amplitud (es el tercero) y a partir de la frecuencia del tercer armónico se determina la velocidad del motor. Determinar la amplitud de los armónicos impares para las velocidades adquiridas (1º, 5º y 7º armónicos) normalizándolas tomando como referencia la amplitud del 3r armónico. If the speed information is not available, the harmonic of greater amplitude is found (it is the third) and the motor speed is determined from the frequency of the third harmonic. Determine the amplitude of the odd harmonics for the acquired velocities (1st, 5th and 7th harmonics) by normalizing them taking as reference the amplitude of the 3rd harmonic.
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- Determinar por interpolación las amplitudes de los armónicos impares entre los pasos de velocidad para tener una referencia a cualquier velocidad. Determine by interpolation the amplitudes of the odd harmonics between the velocity steps to have a reference at any speed.
b) el sistema de adquisición y test implementado realiza las siguientes operaciones: b) the acquisition and test system implemented performs the following operations:
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- Adquisición de datos de tensión homopolar, tomando un mínimo de 8196 muestras. Acquisition of homopolar voltage data, taking a minimum of 8196 samples.
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- Se calcula el espectro de la tensión homopolar. The spectrum of the homopolar voltage is calculated.
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- Si no se tiene la información de velocidad, se encuentra el armónico de mayor amplitud (es el tercero) y a partir de la frecuencia del tercer armónico se determina la velocidad del motor. Se determina la amplitud normalizada de los armónicos 1º, 5º y 7º. If the speed information is not available, 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 the 1st, 5th and 7th harmonics is determined.
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- Se comparan los datos de amplitud normalizada de los armónicos impares (1º, 5º y 7º) con los resultados de calibración de motor sano. The normalized amplitude data of the odd harmonics (1st, 5th and 7th) are compared with the sound motor calibration results.
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- Si existen diferencias apreciables entre las amplitudes de los armónicos 1º, 5º y 7º de motor sano respecto al motor analizado indica que el motor tiene fallo. El indicador de fallo que cuantifica las diferencias entre motor sano y motor con fallo se basa en la distancia ponderada entre las amplitudes de los armónicos del motor sano y del motor bajo análisis. If there are appreciable differences between the amplitudes of the 1st, 5th and 7th harmonics of the sound motor with respect to the analyzed motor, it indicates that the motor has a fault. 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.
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Claims (12)
- 1.one.
- Dispositivo de diagnóstico de cortocircuitos en motores eléctricos de corriente alterna, caracterizado por el hecho de que comprende un conjunto de tres resistencias idénticas dispuestas en estrella formando un neutro flotante, un sensor de tensión que mide la tensión homopolar y un sistema electrónico que permite realizar un procesado en frecuencia de la señal de tensión teniendo en cuenta la velocidad de giro del motor. Short-circuit diagnostic device in AC electric motors, characterized by the fact that it comprises a set of three identical resistors arranged in a star forming a floating neutral, a voltage sensor that measures the homopolar voltage and an electronic system that allows a frequency processing of the voltage signal taking into account the speed of rotation of the motor.
- 2.2.
- Dispositivo de diagnóstico según la reivindicación anterior, en el que la tensión homopolar se obtiene mediante una red de tres resistencias idénticas o equilibradas para formar un neutro artificial. Diagnostic device according to the preceding claim, wherein the homopolar voltage is obtained by a network of three identical or balanced resistors to form an artificial neutral.
- 3. 3.
- Dispositivo de diagnóstico según la reivindicación 1, en el que la tensión homopolar se mide mediante una sonda de tensión conectada entre el centro de la red de tres resistencias idénticas y el centro del bobinado del motor. Diagnostic device according to claim 1, wherein the homopolar voltage is measured by a voltage probe connected between the center of the network of three identical resistors and the center of the motor winding.
- 4.Four.
- Dispositivo de diagnóstico según la reivindicación 1, en el que la evaluación del contenido harmónico de la tensión homopolar se hace aplicando la transformada de Fourier. Diagnostic device according to claim 1, wherein the evaluation of the harmonic content of the homopolar voltage is performed by applying the Fourier transform.
- 5. 5.
- Dispositivo de diagnóstico según reivindicación 4 en que la extracción de factor de fallo para el diagnóstico se basa en la evaluación de la distancia ponderada entre las amplitudes de los armónicos 1º, 5º y 7º del motor sano y del motor bajo análisis. Diagnostic device according to claim 4 in which the extraction of the failure factor for the diagnosis is based on the evaluation of the weighted distance between the amplitudes of the 1st, 5th and 7th harmonics of the sound motor and of the motor under analysis.
- 6.6.
- Dispositivo de diagnóstico según reivindicación 1 caracterizado por comprender los siguientes elementos: Diagnostic device according to claim 1 characterized by comprising the following elements:
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- un conjunto de tres resistencias idénticas de 28 ka set of three identical 28 k resistors
- -10 0 -10 0
- Figura 3 Motor con fallo Motor sano Figure 3 Engine with failure Sound engine
- -20 -twenty
- -30 -30
- -40 -40
- -50 -fifty
- -60 -60
- -70 -70
- -80 -80
- 0 1 2 Orden del armónico 3 4 5 6 7 8 9 10 0 one 2 Harmonic order 3 4 5 6 7 8 9 10
- Categoría Category
- 56 Documentos citados Reivindicaciones afectadas 56 Documents cited Claims Affected
- X X
- 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, pp. 735-742 vol. 2, 3-7 Oct. 2004; doi: 10.1109/IAS.2004.1348496. 1-9 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, pp. 735-742 vol. 2, 3-7 Oct. 2004; doi: 10.1109 / IAS.2004.1348496. 1-9
- A TO
- CN 101202436 A (GUODIAN NANJING AUTOMATION CO) 18.06.2008, BASE DE DATOS PAJ en EPOQUE. 1 CN 101202436 A (GUODIAN NANJING AUTOMATION CO) 18.06.2008, PAJ DATABASE in EPOQUE. one
- Categoría de los documentos citados X: de particular relevancia Y: de particular relevancia combinado con otro/s de la misma categoría A: refleja el estado de la técnica O: referido a divulgación no escrita P: publicado entre la fecha de prioridad y la de presentación de la solicitud E: documento anterior, pero publicado después de la fecha de presentación de la solicitud Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application
- El presente informe ha sido realizado • para todas las reivindicaciones • para las reivindicaciones nº: This report has been prepared • for all claims • for claims no:
- Fecha de realización del informe 05.10.2012 Date of realization of the report 05.10.2012
- Examinador M. P. López Sábater Página 1/4 Examiner M. P. López Sábater Page 1/4
- Novedad (Art. 6.1 LP 11/1986) Novelty (Art. 6.1 LP 11/1986)
- Reivindicaciones 6 Reivindicaciones 1-5,7-9 SI NO Claims 6 Claims 1-5,7-9 IF NOT
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- 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, pp. 735-742 vol. 2, 3-7 Oct. 2004; doi: 10.1109/IAS.2004.1348496. 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, pp. 735-742 vol. 2, 3-7 Oct. 2004; doi: 10.1109 / IAS.2004.1348496.
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| ES201130006A ES2388973B1 (en) | 2011-01-05 | 2011-01-05 | SHORT CIRCUIT FAILURE DIAGNOSTICS EQUIPMENT FOR SYNCHRONOUS MOTORS OF PERMANENT MAGNETS AND METHOD OF USE OF THIS. |
| PCT/ES2012/000001 WO2012093190A2 (en) | 2011-01-05 | 2012-01-04 | Apparatus for diagnosing short-circuit faults for permanent magnet synchronous motors and method for using said apparatus |
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| ES201130006A ES2388973B1 (en) | 2011-01-05 | 2011-01-05 | SHORT CIRCUIT FAILURE DIAGNOSTICS EQUIPMENT FOR SYNCHRONOUS MOTORS OF PERMANENT MAGNETS AND METHOD OF USE OF THIS. |
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| CN106019045B (en) * | 2016-05-16 | 2019-11-12 | 安徽大学 | A kind of method of permanent magnet synchronous motor interturn short-circuit failure diagnosing |
| CN107024655A (en) * | 2017-04-06 | 2017-08-08 | 安徽大学 | A kind of permanent-magnetic synchronous motor stator winding failure diagnostic method |
| CN108008235B (en) * | 2017-11-17 | 2021-02-26 | 珠海格力电器股份有限公司 | Direct current bus short circuit detection method, device and detection circuit |
| CN109768750B (en) * | 2018-12-11 | 2021-02-26 | 天津大学 | Zero-sequence current suppression method of open-winding permanent magnet motor based on extended virtual three phases |
| CN110426593A (en) * | 2019-08-22 | 2019-11-08 | 苏州银蕨电力科技有限公司 | A kind of method for locating single-phase ground fault based on residual voltage starting |
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| ES2388973A1 (en) | 2012-10-22 |
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