UPS应用中δ调制PWM控制器与电压反馈的实现

Realization of delta modulation PWM controller with voltage feedback for UPS application

为了改善UPS的负载电压品质,提高逆变器的开关频率,减小输出电压的谐波分量,提出了调制PWM控制器,其原理是利用负载变化时相位差来改善输出电压.仿真说明输出电压的稳定性得到了改善.

To improve the quality of the load voltage of the UPS, the switching frequency of the converter should be increased and the harmonic content of the output spectrum should be minimized. The modulation has been introduced into the UPS application. The principle of modulation is to use the phase difference to improve the output voltage while the load condition is changed. The simulation result shows that the stability of the output voltage is improved.