磁齿轮电机与集中绕组永磁电机的比较分析

Comparison and Analysis of Magnetic Gear Motor and Concentrated Winding Permanent Magnet Motor

当前低速大转矩传动系统存在机械振动、刚性摩擦等问题,根据调制型磁齿轮效应,磁场调制型永磁齿轮电机(FPGM)可用于低速大转矩直驱。通过分析FPGM与分数槽集中绕组永磁同步电机(FSCW-PMSM)的绕组磁动势各次谐波在电机中的作用,定性比较两者的异同。通过建立FPGM和FSCW-PMSM的有限元模型,分析了两者转矩特性、功率因数和参数特性的区别,验证了FPGM产生大转矩的能力,并为关键参数的分析设计提供了参考。搭建FPGM样机空载试验平台,并将试验数据与有限元分析结果进行对比,证明以FPGM提供低速大转矩方案的可行性。

At present,there are problems such as mechanical vibration and rigid friction in low speed and high torque transmission system.According to the modulated magnetic gear effect,the field-modulated permanent magnet gear motor(FPGM)can be used for low speed and high torque direct drive.By analyzing the role of each harmonic of winding magnetomotive force in FPGM and fractional slot concentrated winding permanent magnet synchronous motor(FSCW-PMSM),the similarities and differences between the two motors are qualitatively compared.By establishing the finite element model of FPGM and FSCW-PMSM,the differences of torque characteristics,power factors and parameter characteristics are analyzed,and the ability of FPGM to produce large torque is verified,which provides a reference for the analysis and design of key parameters.The no-load experimental platform of FPGM prototype is built,and the experimental data are compared with the finite element analysis results,proving the feasibility of using FPGM to provide low speed and large torque scheme.