电流源型逆变器供电的感应电动机最佳效率运行的研究

Research of Optimal Efficiency Induction Motor Drive Fed by a Current Source Inverter

本文提出了一个电流源型逆变器供电的感应电动机在轻载下以最佳效率运行的方法，通过调节定子电流和转差频率，减少轻载时电动机的气隙磁通，提高运行效率。试验表明，在四分之一额定负载下，效率可以提高百分之十以上。

This paper presents a method of optimal efficiency induction motor drive fed by a current source inverter under light loads. By adjusting the stator current and slip-frequency,reducing air-gap flux of motor under light loads,the efficiency of drive is improved. The expremental results shows ten percent or more improvement in the efficiency is obtained at a quarter of the full load.