每极分数槽永磁直线电机的槽极数配合研究_卢琴芬.pdfVIP

32 36 Vol.32 No.36 Dec.25, 2012 68 2012 12 25 Proceedings of the CSEE ©2012 Chin.Soc.for Elec.Eng. 0258-8013 (2012) 36-0068-07 TM 359 A 470·40 ( 310027) Slot/Pole Number Combination Research of PM Linear Motors With Fractional Slots per Pole LU Qinfen, CHENG Chuanying, YE Yunyue, FANG Youtong (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, Zhejiang Province, China) ABSTRACT: The PM linear motors (PMLMs) with fractional PMLMs slots per pole can adopt non-overlapping windings, so they have many advantages such as short end windings, low copper losses, high thrust force density and so on. They are widely applied in high speed digital machine tools and processing equipments of semiconductor. For two PMLMs of 12 slots/11 poles and 12 slots/10 poles, four feasible structures of each one 0 are described with types of single-sided or double-sided and (PM linear windings of all teeth wound or of alternate teeth wound. Based on the erected finite element method (FEM) model, the motors PMLMs) relationships between the average thrust force, thrust ripple and structure parameters are investigated. Moreover, the thrust force performance of the double-sided structure is deeply [1] studied when permanent magnets in two sides are shifted by a certain position, and then the optimal shifted position is found. By comparative analysis in detail, the optima