串联电容法提高异步电动机功率因数的研究

The Research of Enhancing the Power Factor of the Induction Motor Based on Series-Capacitor

给出用串联电容法提高两台同工况并联运行异步电动机功率因数的原理。从电动机的T形等效电路出发,讨论起动过程中电动机电路参数随转差率的变化关系,并得出用串联电容法提高电动机功率因数时串联支路的电动机可自动实现减压起动的结论。

The principle of enhancing the power factor of the induction motor based on series-capaci-tor is presented. Based on the T-shape equivalent circuit, the relation between the parameters of the motor and the rotation rate when the motor is started, is discussed. In the branch to which a capacitor is added, the motor starts with low voltage.