开关磁阻电机振动转矩检测与分析

开关磁阻电机(SRM)核心问题是振动转矩的检测与抑制,众多研究已表明SRM的转矩变化与其相绕组电流紧密相关。为了观测SRM工作时的电流变化和振动转矩情况,构建了磁阻电机的仿真系统,对电机在角度位置控制(APC)、电流斩波控制(CCC)和电压斩波控制(CVC)3种模式下的振动转矩和电流情况进行了仿真,结果表明以换相频率为主频的振动转矩非常明显。此外,搭建了SRM振动转矩检测试验平台,采用角加速度传感器检测了电机的实际振动转矩情况,并对试验结果进行了分析讨论。

Vibration Torque Detection and Experimental Analysis of Switched Reluctance Motor

The core problem of switched reluctance motor (SRM) is the detection and suppression of vibration torque. The linear mathematical model of SRM is established, and the torque change of SRM is closely related to the phase winding current. In order to observe the current change and vibration torque of SRM, a simulation system of SRM is built and the vibration torque and current of SRM in three modes of angular position control (APC), current chopping control (CCC) and chopping voltage control (CVC) are simulated. The results show that the vibration torque with commutation frequency as the main frequency is very obvious. Meanwhile, an experimental platform for testing the vibration torque of SRM is set up, and the actual vibration torque of the motor is detected by angular acceleration sensor. The experimental results are analyzed and discussed.