基于PI参数自适应的开关磁阻电机调速控制研究

发布时间：2018-05-04 09:56

本文选题：开关磁阻电机 + 调速　；参考：《中国电机工程学报》2015年16期

【摘要】：开关磁阻电机(switched reluctance motor,SRM)的双凸极结构和易饱和特性导致其相电感出现严重的非线性,输出转矩随着电流和转子位置不断变化,设计参数自适应的转速电流调节器将有效改善SRM调速系统的运行性能。该文结合SRM的特点,利用直流电机电流环校正方法设计出PI参数自适应的电流调节器,利用直流电机转速环校正方法和小信号分析法设计出PI参数自适应的转速调节器,其中,电流环为内环,转速环为外环。由于SRM低速时转矩脉动影响较大,该文调速系统依据转速高低采用双模式运行控制,低速时采用转矩电流间接控制,将转速调节器输出作为参考转矩,进而调节参考电流以降低转矩波动;在转速高于设定值时采用直接电流控制模式,将转速调节器输出值直接作为参考电流。最后,通过仿真和实验验证了该控制方案的可行性。
[Abstract]:The double salient structure and saturation characteristics of switched reluctance motor (SRM) cause the serious nonlinearity of its phase inductor. The output torque is constantly changing with the current and rotor position. The adaptive speed current regulator with the design parameters will effectively improve the operating performance of the SRM speed regulation system. This paper combines the characteristics of SRM. An adaptive current regulator with PI parameters is designed by the current loop correction method of DC motor. The adaptive speed regulator of PI parameters is designed by using the speed loop correction method and the small signal analysis method of the DC motor. The current ring is the inner loop and the speed loop is the outer ring. The speed regulation system of this paper is based on the great influence of the torque ripple at the low speed of SRM. The rotation speed is controlled by two modes, and the torque current is indirectly controlled at low speed, the output of the speed regulator is used as the reference torque, and then the reference current is adjusted to reduce the torque ripple. The direct current control mode is adopted when the speed is higher than the set value, and the output value of the speed regulator is directly used as the reference current. Finally, the simulation is simulated. The feasibility of the control scheme is verified by the experiment.

【作者单位】：北京交通大学电气工程学院;
【基金】：国家自然科学基金项目(50907004) 财政部、教育部基本科研业务费(2014JBM111)~~
【分类号】：TM352

【参考文献】