Review on Efficiency Optimization Control Strategies of Linear Induction Machines
Xu Wei1, Xiao Xinyu1, Dong Dinghao1, Tang YiRong1, Hu Dong2, Liu Yi1
1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China; 2. CRRC Zhuzhou Institute Co. Ltd Zhuzhou 412001 China
Abstract：Linear induction machines (LIMs) have become excellent candidates for linear-motion applications due to their abilities of generating thrust without any transmissions, and have been widely adopted in transportation, military, industries, etc. However, the LIMs suffer from low efficiency due to the cut-open magnetic circuit, half-filled slots, and large air-gap length. Efficiency optimization control (EOC) techniques are mostly required to improve the machine efficiency by using a proper flux level. This paper summarizes the advancements of EOC techniques for LIMs based on literature survey, then analyzes main challenges to the EOC applications, and finally discusses the developing trends of EOC for LIMs.
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