基于APFC的超声发生器功率调节数字控制策略

The Output Power Digital Control Strategy of Ultrasonic Generator Based on APFC

本文在超声发生器中加入功率因数校正电路(APFC),并利用单片机控制数字电位器实现了对电压反馈网络的调节,从而实现APFC输出电压在一定范围内的自适应控制。此策略不仅可以降低超声发生器对电网的污染,而且实现了输出电压的可控性,从而可实现对输出功率的控制。

The self-adaptable control of output voltage could be realized under certain range by adding a APFC in ultrasonic generator and adjusting voltage feedback network with digital potentiometers. With such control strategy, the power pollution of ultrasonic gener ator could be reduced,and the control of output voltage.or output power.could be realized.