【摘要】 介绍了一种使同步电动机在发生变化时输入功率因数保持近于1并且负载角(或功角)也保持接近于零的附加交轴励磁控制方案.这种方案通过对一只附加的交轴绕组进行励磁,使其产生的感应电势抵消电动机的同步电抗压降.文中提出实现这一方案的两种控制方法并给出了具体的控制电路以及输入功率因数对照电枢电流的特性实验曲线更多还原

【Abstract】 This paper presents a scheme of auxiliary rectangular axis excitation for synchronous motor, which is able to keep power factor to unity and load angle to zero as load changes. This scheme makes an auxiliary wind to be excited and in-ducted, the magnization produces in the armture would counter the voltage drop from synchronous reactance. In the paper, two methods for the excitation of aux-iliary wind have been presented and power factor versur armture current is also plotted.更多还原