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| DOI： |
| Received:January 05, 2005Revised:September 20, 2006 |
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| Sensorless torque control scheme of induction motor for hybrid electric vehicle |
| Yan LIU, Cheng SHAO |
| (Research Institute of Advanced Control
Technology, Dalian University of Technology, Dalian Liaoning 116024,
China;School of Information Engineering of Dalian
University, Dalian Liaoning 116622, China) |
| Abstract: |
| In this paper, the sensorless torque robust tracking problem of the
induction motor for hybrid electric vehicle (HEV) applications is
addressed. Because motor parameter variations in HEV applications
are larger than in industrial drive system, the conventional
field-oriented control (FOC) provides poor performance. Therefore, a
new robust PI-based extension of the FOC controller and a speed-flux
observer based on sliding mode and Lyapunov theory are developed in
order to improve the overall performance. Simulation results show
that the proposed sensorless torque control scheme is robust with
respect to motor parameter variations and loading disturbances. In
addition, the operating flux of the motor is chosen optimally to
minimize the consumption of electric energy, which results in a
significant reduction in energy losses shown by simulations. |
| Key words: Hybrid electric vehicle Induction motor Torque tracking Sliding
mode |
