Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Performance Evaluation of an Integrated Starter-Alternator with an IPM Synchronous Machine under Sensor-less Operation

  • Xu, Zhuang (School of Electrical Eng. and Automation, Harbin Institute of Technology) ;
  • Rahman, M.F. (School of Electrical Engineering and telecommunications, The University of New South Wales) ;
  • Wang, G. (School of Electrical Eng. and Automation, Harbin Institute of Technology) ;
  • Xu, Dianguo (School of Electrical Eng. and Automation, Harbin Institute of Technology)
  • Received : 2011.08.30
  • Accepted : 2011.12.04
  • Published : 2012.01.20
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Abstract

This paper presents performance evaluation of an Integrated Starter-Alternator (ISA) prototype with an Interior Permanent Magnet (IPM) synchronous machine under sensor-less operation. To attain a high starting torque at zero speed and in subsequent extremely low speed range, a hybrid signal injection method is proposed. At higher speed, an improved stator flux observer is used for the stator flux estimation. This observer is able to produce accurately-estimated stator flux linkage for high performance Direct Torque and Flux Control (DTFC) implementation. The sensor-less DTFC IPM synchronous machine drive takes full advantage of the capacity of the power converter and fulfills the control specifications for the ISA. The trajectory control algorithm responds rapidly and in a well behaved manner over a wide range of operating conditions. The experimental results verify the feasibility and advantages of the system.

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References

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