The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Zero Torque Control of Switched Reluctance Motor for Integral Charging

충전기 겸용 스위치드 릴럭턴스 전동기의 제로토크제어

  • Rashidi, A. (Dept. of Electrical and Computer Engineering, Isfahan University of Technology) ;
  • Namazi, M.M (Dept. of Electrical and Computer Engineering, Isfahan University of Technology) ;
  • Saghaian, S.M. (Dept. of Electrical and Computer Engineering, Isfahan University of Technology) ;
  • Lee, D.H. (Dept. of Mechatronics Engineering, Kyungsung University) ;
  • Ahn, J.W. (Dept. of Mechatronics Engineering, Kyungsung University)
  • Received : 2016.10.20
  • Accepted : 2016.12.26
  • Published : 2017.02.01
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Abstract

In this paper, a zero torque control scheme adopting current sharing function (CSF) used in integrated Switched Reluctance Motor (SRM) drive with DC battery charger is proposed. The proposed control scheme is able to achieve the keeping position (KP), zero torque (ZT) and power factor correction (PFC) at the same time with a simple novel current sharing function algorithm. The proposed CSF makes the proper reference for each phase windings of SRM to satisfy the total charging current of the battery with zero torque output to hold still position with power factor correction, and the copper loss minimization during of battery charging is also achieved during this process. Based on these, CSFs can be used without any recalculation of the optimal current at every sampling time. In this proposed integrated battery charger system, the cost effective, volume and weight reduction and power enlargement is realized by function multiplexing of the motor winding and asymmetric SR converter. By using the phase winding as large inductors for charging process, and taking the asymmetric SR converter as an interleaved converter with boost mode operation, the EV can be charged effectively and successfully with minimum integral system. In this integral system, there is a position sliding mode controller used to overcome any uncertainty such as mutual inductance or DC offset current sensor. Power factor correction and voltage adaption are obtained with three-phase buck type converter (or current source rectifier) that is cascaded with conventional SRM, one for wide input and output voltage range. The practicability is validated by the simulation and experimental results by using a laboratory 3-hp SRM setup based on TI TMS320F28335 platform.

Keywords

References

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