Abstract：The permanent magnet linear machine with primary excitation (PE-PMLM) is a new type of special machine derived from the traditional permanent magnet linear machine, which has the advantages of high thrust force density, highefficiency, high precision and high reliability. In the field of long stroke direct drive linear motion, it exhibits unique performance and cost advantages, and has high research value as well as broad application prospect. This paper reviews and summarizes the current status and development trend of the PE-PMLM technology. Based on the flux modulation theory, the harmonic distribution and thrust generation principle of the PE-PMLM are revealed. From the perspective of topology, the technical points and research progress of various kinds of PE-PMLM are reviewed. Based on the characteristics of PE-PMLM, high performance control strategies are introduced. Finally, comprehensive performances of all kinds of PE-PMLM are compared and analyzed, and the future development direction is discussed.
沈燚明, 卢琴芬. 初级励磁型永磁直线电机研究现状与展望[J]. 电工技术学报, 2021, 36(11): 2325-2343.
Shen Yiming, Lu Qinfen. Overview of Permanent Magnet Linear Machines with Primary Excitation. Transactions of China Electrotechnical Society, 2021, 36(11): 2325-2343.
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2021, Vol. 36 
