摘要
介绍一种不用工频变压器的SPWM(正弦脉宽调制)式DC—AC变换器,说明其工作原理,并讨论了主回路设计中的某些问题。
A novel sinusoidal DC-AC converter is presented, in which the sinusoida absolute pulse width modulation (SPWM) technique is adopted and the transformer of frequercy of 50Hz is not used. The working principle of the converter is described in detail and some important problems in desingning the power circuits are discussed.
