This dissertation presents the structure , the principle and the design of frequency - variable power system with the application of dsp ( digital signal processor ) and ipm ( intelligent power module ) 變頻技術(shù)是電力電子技術(shù)的主要組成部分,應(yīng)用十分廣泛,它主要應(yīng)用在交流電機(jī)的調(diào)速和供電電源兩個(gè)領(lǐng)域。