SCM has been in ac speed regulating system had been used widely. For example by Intel company 1983 years development and production of MCS - 96 series is the higher performance of the single chip microcomputer is one of the series, it is s…

At present, the research more high power inverter circuit are: Multilevel voltage inverter Transformer coupling of multiple pulse inverter Hand over frequency converter Doubly-fed ac frequency conversion speed control system (1) level volt…