WO2017008452A1 - Procédé d'estimation d'inductance de phase de moteur électrique à réluctance commutée prenant en considération les pertes dans le fer - Google Patents

Procédé d'estimation d'inductance de phase de moteur électrique à réluctance commutée prenant en considération les pertes dans le fer Download PDF

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Publication number
WO2017008452A1
WO2017008452A1 PCT/CN2015/099097 CN2015099097W WO2017008452A1 WO 2017008452 A1 WO2017008452 A1 WO 2017008452A1 CN 2015099097 W CN2015099097 W CN 2015099097W WO 2017008452 A1 WO2017008452 A1 WO 2017008452A1
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WIPO (PCT)
Prior art keywords
value
voltage
switched reluctance
phase
current
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PCT/CN2015/099097
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English (en)
Chinese (zh)
Inventor
陈昊
王千龙
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中国矿业大学
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Publication date
Application filed by 中国矿业大学 filed Critical 中国矿业大学
Priority to AU2015402126A priority Critical patent/AU2015402126B2/en
Publication of WO2017008452A1 publication Critical patent/WO2017008452A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/08—Reluctance motors

Definitions

  • the invention relates to a method for estimating the phase inductance of a switched reluctance motor taking account of iron loss, and is suitable for a switched reluctance motor system with various phase numbers and using a plurality of power converters.
  • the influence of iron loss is neglected. It is considered that the rise time and fall time of the current generated by the phase winding response are the same, and the rising slope and the falling slope are also the same. However, the iron loss of the switched reluctance motor can not be ignored.
  • the phase current measured by the current sensor should be the sum of the phase winding current and the iron current; in the discharge phase, the direction of the iron current will be reversed, which will result in The phase current measured by the current sensor shows a rapid decline.
  • the measured phase current of the current sensor should be the difference between the phase winding current and the iron current. Therefore, the iron loss of the switched reluctance motor leads to the large phase inductance error of the conventional injection pulse voltage current peak method and current slope method. The accuracy is not high.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide a method for estimating the phase inductance of a switched reluctance motor with simple method, small error, high precision and iron loss.
  • the method for estimating the phase inductance of a switched reluctance motor considering iron loss injecting a voltage pulse into a phase winding of a switched reluctance motor, causing a phase pulse of the switched reluctance motor to generate a current pulse, and detecting a phase winding response by a current sensor
  • the current pulse peak value only needs to detect the current pulse rise time value and the fall time value;
  • the voltage sensor is used to detect the injection voltage pulse voltage value, and the injection voltage pulse is injected into the switching reluctance motor phase winding to charge the total voltage drop value on the power switch and
  • the total voltage drop value of the discharge phase on the freewheeling diode can be used to calculate the phase inductance value of the switched reluctance motor taking into account the iron loss.
  • phase inductance value L w of the switched reluctance motor taking into account the iron loss can be calculated.
  • the present invention injects a voltage pulse into a phase winding of a switched reluctance motor, and uses a current sensor to detect a peak value of a current pulse generated by a phase winding response, and only needs to detect a current pulse rise time value and a fall time value, and the voltage sensor only needs to detect the injection.
  • the voltage pulse voltage value, the injection voltage pulse injected into the phase winding of the switched reluctance motor, the total voltage drop value on the power switch and the total voltage drop value on the freewheeling diode during the discharge phase can be calculated to take into account the iron loss.
  • the phase inductance value of the switched reluctance motor is small, and the real-time performance is good.
  • the estimated phase reluctance motor has small inductance error, high precision, and is not affected by the loss of motor iron. It has strong practicability and versatility, and has a wide range of Application prospects.
  • 1 is an equivalent circuit of a phase winding of a switched reluctance motor according to the present invention
  • FIG. 2 is a schematic structural view of an injection voltage pulse double-switching power circuit of the present invention
  • FIG. 3 is a schematic diagram of current pulses generated by the response of the injection voltage pulse phase winding of the present invention.
  • FIG. 4 is a schematic view showing the structure of an injection voltage pulse double winding power circuit of the present invention.
  • the method for estimating the phase inductance of a switched reluctance motor considering iron loss according to the present invention has the following specific steps:
  • phase inductance value L w of the switched reluctance motor taking into account the iron loss can be calculated.
  • Embodiment 1 Taking a switched reluctance motor system using a two-switch power converter of each phase as an example,
  • an equivalent circuit of a phase reluctance motor of a switched reluctance motor which includes a loss of iron, includes a phase reluctance motor phase inductance L w , a ferroelectric equivalent resistance R iron connected in parallel across the phase inductance L w , and a phase
  • the winding resistance R cop i tot is the phase current that the current sensor can detect, i w is the actual current of the phase winding, and i iron is the equivalent iron current.
  • a voltage pulse with a voltage value of U S is injected into the phase winding of the switched reluctance motor by a two-switch power converter per phase, and the voltage value of the injected voltage pulse U S is detected by a voltage sensor, and the voltage applied to the phase winding is applied.
  • the value is U t ; during the charging phase, the power switches S 1 and S 2 are closed, as shown in Figure 3, the phase winding responds to generate a current pulse with a current peak value of ⁇ I, and the phase current i tot measured by the current sensor should be the actual phase winding.
  • the sum of the current i w and the equivalent iron current i iron , the total voltage drop value U ⁇ T of the sum of the total voltage drops on the power switches S 1 and S 2 is detected by the voltage sensor, and the rise time value of the current pulse peak ⁇ I is detected. ⁇ t 1 ;
  • the power switches S 1 and S 2 are disconnected, the current pulse is attenuated by the freewheeling diodes D 1 and D 2 , and the direction of the iron current is reversed, resulting in the phase current measured by the current sensor.
  • Tot shows a trend of rapid decline, as shown in Figure 3, the phase current i tot measured by the current sensor should be the difference between the actual current i w of the phase winding and the equivalent iron current i iron .
  • the freewheeling diode D 1 is detected by the voltage sensor. And on D 2 The total pressure drop value U ⁇ D of the sum of the total pressure drops, the falling time value ⁇ t 2 of the detected current pulse peak ⁇ I;
  • phase inductance value L w of the switched reluctance motor taking into account the iron loss can be calculated.
  • Embodiment 2 taking a switched reluctance motor system using a two-winding power converter per phase as an example,
  • the equivalent circuit of the phase winding of the switched reluctance motor considering the iron loss includes the phase reluctance motor phase inductance L w and the iron loss equivalent resistance R iron connected in parallel across the phase inductor L w and the phase winding
  • the resistance R cop i tot is the phase current that the current sensor can detect, i w is the actual current of the phase winding, and i iron is the equivalent iron current.
  • a voltage pulse with a voltage value of U S is injected into the phase winding of the switched reluctance motor by a two-winding power converter per phase, and the voltage value of the injection voltage pulse U S is detected by a voltage sensor, and the voltage applied to the phase winding is applied.
  • the value is U t ; the charging phase, the power switch S is closed, as shown in Figure 3, the phase winding responds to generate a current pulse with a current peak value of ⁇ I, and the phase current i tot measured by the current sensor should be the actual current i w of the phase winding and
  • the sum of the equivalent iron currents i iron , the total voltage drop value U ⁇ T on the power switch S is detected by the voltage sensor, the rise time value ⁇ t 1 of the current pulse peak ⁇ I is detected, and the power switch S is disconnected, the current pulse is discharged during the discharge phase.
  • the measured phase current i tot of the current sensor should be actual current to the phase winding equivalent iron and i w i iron consumption current of the difference, U ⁇ D, ⁇ I detected current pulse peak value of the total pressure drop is lowered by the voltage sensor detects a freewheeling diode D Intermediate value ⁇ t 2; calculated by the formula:
  • phase inductance value L w of the switched reluctance motor taking into account the iron loss can be calculated.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Testing Relating To Insulation (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

L'invention porte sur un procédé d'estimation d'inductance de phase d'un moteur électrique à réluctance commutée prenant en considération les pertes dans le fer. Le procédé consiste : à injecter une impulsion de tension ayant une valeur de tension US dans un enroulement de phase d'un moteur électrique à réluctance commutée, de manière que l'enroulement de phase génère une impulsion de courant ayant une valeur de crête de courant ΔI ; à utiliser un capteur de courant pour détecter la valeur de crête d'impulsion de courant ΔI ; à détecter, par un capteur de tension, une valeur de chute de tension totale UΔT sur des commutateurs de puissance (S1, S2) dans une phase de charge et une valeur de chute de tension totale UΔD sur des diodes de roue libre (D1, D2) dans une phase de décharge ; à détecter une valeur de temps de montée Δt1 et une valeur de temps de descente Δt2 de l'impulsion de courant ; et sur la base des paramètres précités, à estimer une valeur d'inductance de phase Lwo du moteur électrique à réluctance commutée qui prend en considération les pertes dans le fer. L'inductance de phase estimée du moteur électrique à réluctance commutée a une faible erreur et une grande précision, et présente un relativement fort caractère pratique et universel.
PCT/CN2015/099097 2015-07-10 2015-12-28 Procédé d'estimation d'inductance de phase de moteur électrique à réluctance commutée prenant en considération les pertes dans le fer WO2017008452A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2015402126A AU2015402126B2 (en) 2015-07-10 2015-12-28 Method for estimating phase inductance of switched reluctance electric motor that takes iron loss into consideration

Applications Claiming Priority (2)

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CN201510405878.8A CN105162366B (zh) 2015-07-10 2015-07-10 一种计及铁损耗的开关磁阻电机相电感估测方法
CN201510405878.8 2015-07-10

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WO2017008452A1 true WO2017008452A1 (fr) 2017-01-19

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AU (1) AU2015402126B2 (fr)
WO (1) WO2017008452A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN105162366B (zh) * 2015-07-10 2017-12-12 中国矿业大学 一种计及铁损耗的开关磁阻电机相电感估测方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101902189A (zh) * 2010-07-28 2010-12-01 南京航空航天大学 一种开关磁阻电机无位置传感器初始定位和起动方法
EP2320559A2 (fr) * 2009-11-03 2011-05-11 Rockwell Automation Technologies, Inc. Système et procédé d'estimation des paramètres pour un moteur asynchrone
CN105162366A (zh) * 2015-07-10 2015-12-16 中国矿业大学 一种计及铁损耗的开关磁阻电机相电感估测方法

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JP3502040B2 (ja) * 2000-12-27 2004-03-02 本田技研工業株式会社 ブラシレスｄｃモータの定数検出装置およびブラシレスｄｃモータの制御装置およびブラシレスｄｃモータの定数検出用プログラム
JP2009136047A (ja) * 2007-11-29 2009-06-18 Mitsubishi Electric Corp 誘導モータ
CN103605075A (zh) * 2013-11-22 2014-02-26 国家电网公司 一种双馈风力发电机等效电路参数测定方法

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
EP2320559A2 (fr) * 2009-11-03 2011-05-11 Rockwell Automation Technologies, Inc. Système et procédé d'estimation des paramètres pour un moteur asynchrone
CN101902189A (zh) * 2010-07-28 2010-12-01 南京航空航天大学 一种开关磁阻电机无位置传感器初始定位和起动方法
CN105162366A (zh) * 2015-07-10 2015-12-16 中国矿业大学 一种计及铁损耗的开关磁阻电机相电感估测方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CAI, JUN ET AL.: "Sensorless Control of Switched Reluctance Motors Based on Full-Cycle Inductance Method", TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY, vol. 28, no. 2, 28 February 2013 (2013-02-28), pages 146, XP011454754, ISSN: 1000-6753 *

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AU2015402126A1 (en) 2017-03-16
CN105162366B (zh) 2017-12-12
AU2015402126B2 (en) 2017-11-23

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