The Development Of AC Inverter Of Modern Vehicle

In recent years, as economy develops quickly, the city modern rail transport of our country enters a high speed development period, a lot of nation-wide cities use subway, light rail and tramcar to solve the serious problem of traffic jam. The utilization of modern tramcar has not only met the swift and violent development of city economy, efficiently alleviated city traffic pressure , facilitate the daily going out of resident, most major is to solve because of subway and the project cost of light rail expensive the fund that causes the problem lacked. Therefore in, for little city development modern tramcar is the choice of the best. Modern vehicles are swifter, more comfortable and pollutious less than traditional vehicles. They are equipped with many advancing devices such as control of AC drag, monitoring display by the computer, air and electricity uniting brake, air spring, rubber wheels etc. So they have a bright future.The transmission technology of direct current of alternating transmission technical replacement tradition becomes the tendency of present tramcar power pull. It is imported abroad because of the city vehicle alternating transmission systematic most dependences of our country. So city orbit vehicle pull inverter domestic melt is present key research subject. This program supplies power according to the direct current of 750V under condition the requirement of the motor pull system of 4×75KW of AC traction. AC inverter is designed and developed according to 4C4M AC drive .The specific design content includes main circuit design drive circuit design. control circuit design, protect circuit design. And there is a research on the way of scattered hot system design.It needs inverter to allocate the interface of data communication in order to take over the control design of the control system of upper levels. This program research is to explore pull inverter domestic melt and satisfy the needs of the Dalian new tram car transmission system of AC traction. It is a kind of technology reservation for the alternating transmission system in the future.