永磁式双凸极电机角度提前控制方式

Prior Angle Control for Doubly Salient Permanent Magnet Motor

以12/8极永磁式双凸极电机为研究对象,针对现有文献中提出的控制方式——电动运行方式,提出了角度提前控制方式。并在有限元法对电机内电磁场计算分析的基础上,运用理论分析及系统稳态运行仿真模型,研究了不同角度提前量对永磁式双凸极电机相绕组电流及系统输出特性的影响。结果显示,合理地选择角度提前量,能提高电机换相后绕组电流上升率和平均值,提高电机在中等转矩下的转速和输出功率。并在一台原理样机上进行了试验验证,试验结果和分析结果间有很好的一致性。

Doubly salient permanent magnet motor （DSPM） is a novel electromechanical controllable AC variable speed system presented in 1990＇s. In this paper, prior anglecontrol strategy is proposed for reinforcement of control strategy. On the base of applying finite element analysis method （FEA） to the DSPM field, by theory analysis and steady simulation model of the motor system, the influences for various prior angle on current in each phase and on the system＇s output characteristic are investigated. The research results can be concluded that current rising rate after altering phase and current mean value in each phase can be increased at a suitable prior angle. The rotating speed and output power at medium torque for DSPM can also be increased. And this conclusion is verified by test.