Phase current reconstruction of switched reluctance motors from DC-link current under double high frequency pulses injection

Chun Gan, Jianhua Wu, Shiyou Yang, Yihua Hu

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

witched reluctance motors (SRMs) have been considered as low-cost machines for electric vehicle (EV) and hybrid electric vehicle (HEV) applications. However, the current sensors used in the system will not only increase the cost and volume, but also degrade the running reliability of the motor drives. Conventionally, the current sensors are used in each phase winding individually to obtain these phase currents. To reduce the number of current sensors, a four-phase 8/6-pole SRM is applied to analyze the working states and a novel phase current reconstruction method from the dc-link current employing double high frequency pulses injection is then proposed. Two kinds of high frequency pulses with large duty-cycles and phase-shift are injected to the down-switches in each phase respectively when the phase currents are overlapped in the turn-on region, and the dc-link current is decomposed to reconstruct phase currents in both current chopping control (CCC) system and single pulse control (SPC) system. The transient performance in a closed-loop system based on the phase current reconstruction scheme is investigated. The proposed method uses only one current sensor in the dc-link and requires no additional circuits. The simulation and experimental results are presented to confirm the implementation of the proposed method.
LanguageEnglish
Number of pages11
JournalIEEE Transactions on Industrial Electronics
Early online date21 Oct 2014
DOIs
Publication statusPublished - 2014

Fingerprint

Reluctance motors
Sensors
Control systems
Electric current control
Hybrid vehicles
Electric vehicles
Closed loop systems
Phase shift
Costs
Poles
Switches
Networks (circuits)

Keywords

  • switched reluctance motor
  • electric vehicle
  • phase current reconstruction
  • high frequency pulses injection

Cite this

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title = "Phase current reconstruction of switched reluctance motors from DC-link current under double high frequency pulses injection",
abstract = "witched reluctance motors (SRMs) have been considered as low-cost machines for electric vehicle (EV) and hybrid electric vehicle (HEV) applications. However, the current sensors used in the system will not only increase the cost and volume, but also degrade the running reliability of the motor drives. Conventionally, the current sensors are used in each phase winding individually to obtain these phase currents. To reduce the number of current sensors, a four-phase 8/6-pole SRM is applied to analyze the working states and a novel phase current reconstruction method from the dc-link current employing double high frequency pulses injection is then proposed. Two kinds of high frequency pulses with large duty-cycles and phase-shift are injected to the down-switches in each phase respectively when the phase currents are overlapped in the turn-on region, and the dc-link current is decomposed to reconstruct phase currents in both current chopping control (CCC) system and single pulse control (SPC) system. The transient performance in a closed-loop system based on the phase current reconstruction scheme is investigated. The proposed method uses only one current sensor in the dc-link and requires no additional circuits. The simulation and experimental results are presented to confirm the implementation of the proposed method.",
keywords = "switched reluctance motor, electric vehicle, phase current reconstruction, high frequency pulses injection",
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Phase current reconstruction of switched reluctance motors from DC-link current under double high frequency pulses injection. / Gan, Chun; Wu, Jianhua; Yang, Shiyou; Hu, Yihua.

In: IEEE Transactions on Industrial Electronics, 2014.

Research output: Contribution to journalArticle

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AU - Gan, Chun

AU - Wu, Jianhua

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N1 - (c) 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

PY - 2014

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N2 - witched reluctance motors (SRMs) have been considered as low-cost machines for electric vehicle (EV) and hybrid electric vehicle (HEV) applications. However, the current sensors used in the system will not only increase the cost and volume, but also degrade the running reliability of the motor drives. Conventionally, the current sensors are used in each phase winding individually to obtain these phase currents. To reduce the number of current sensors, a four-phase 8/6-pole SRM is applied to analyze the working states and a novel phase current reconstruction method from the dc-link current employing double high frequency pulses injection is then proposed. Two kinds of high frequency pulses with large duty-cycles and phase-shift are injected to the down-switches in each phase respectively when the phase currents are overlapped in the turn-on region, and the dc-link current is decomposed to reconstruct phase currents in both current chopping control (CCC) system and single pulse control (SPC) system. The transient performance in a closed-loop system based on the phase current reconstruction scheme is investigated. The proposed method uses only one current sensor in the dc-link and requires no additional circuits. The simulation and experimental results are presented to confirm the implementation of the proposed method.

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