开关磁阻电动机传动系统的机械特性研究

Study of Mechanical Properties for Switched Reluctance Motor Drive

给出了开关磁阻电动机传动系统采用速度开环控制方式时机械特性的数学模型及计算结果 .介绍了常见的开关磁阻电动机传动系统控制策略 .分析了速度开环控制方式下的系统稳定工作点及极限机械特性的决定因素 .在此基础上 ,分析并给出了速度闭环控制方式下的系统机械特性及负载变化时的电动机转矩 -转速轨迹 .结果表明 ,在速度开环控制方式下 ,开关磁阻电动机传动系统具有较软的机械特性 ;在速度闭环控制方式下 。

The mathematical models and the calculated results of mechanical properties for switched reluctance motor with the speed open-loop control were given. The common control strategies of the drive were introduced. The stability working point and the decisive factor of the limit of the mechanical properties with the speed open-loop control were analyzed. On the basis of this, the mechanical properties with the speed closed-loop control and the locus of the torque-speed open-loop control is characterized by a soft mechanical property, while the speed closed-loop control is hard.