摘要
本文提出了一种按移相法构成的交流—交流PWM直接变频器,其输出频率可达电源频率,控制电路简单。该变频器对感性负载具有电源侧超前的功率因数,有再生功能,输出波形接近正弦,主回路功北只有一次转换,功率器件的开关频率低,损耗小,电压增益达0.83。上述结果已得到实验验证。
An AC to AC PWM Frequency changer (FC) based on the concept of continuous phase shifting is described. The output frequency of this FC may be equal to the in put frequency of the supply. The control system is extremly simple. Theoretical analysis shows that this FC has the following features: leading input power factor for inductive load, regenerative function, sine-shaped output voltages/currents, only one stage main power conversion, lower Switching frequency and also lower losses of the semiconductor devices. The volfage gain is 0.83. The predicted results are verified experimentally.
出处
《电气传动》
北大核心
1992年第2期11-16,共6页
Electric Drive
