一种适用于可变阻感负载的交流调压器

An AC Chopper for Alterable Inductive Load

提出了一种适用于可变阻感负载的单相交流调压方案。采用PWM控制的AC/AC降压变换器实现了对负载电压的调节。宽幅电流检测确保了负载容量变化时输出电压和输出电流的质量和稳定性。还给出了变负载情况下输出滤波器的设计方法。1kVA样机的实验结果表明,提出的方案在不同容量的阻感负载下均能精确调压,输出电压和输出电流质量均能满足理论要求。

A project of AC chopper for alterable inductive load is described.It is made up of an AC-AC buck converter which can adjust the voltage by PWM.Using a wide-range current detector,the chopper can guarantee the quality and the stability of load voltage and current to satisfy the demands.Furthermore, an output filter design for alterable inductive load is presented.The experimental results of a lkVA prototype show that the proposed scheme has good performances in voltage regulation of alterable inductive load.The quality of output voltage and current satisfies the theory requirements.