Study & Design Of Inverter Power Supply Applied In Cars

Cars have become the necessary of life. It's time that cars are the necessary of life change into the luxury of life. The owners of cars need more and more electron devices in the open air, such as auto sound, auto DVD, auto fridges, laptops, chargers and kinds of adapters. In developed country, inverter power supplies are absolutely necessarily in every car. According to the statistic, inverter power supplies applied fall short of 20% in domestic market. Additionally the sell of cars is high every year, inverter power supplies will have a big market in home market.Inverter power supplies applied in cars transform from 12V/24V of storage battery DC into 220V AC. Firstly, the power-switch transforms the input-voltage DC into PWM (Pulse-Width Modulation). Secondly, the AC voltage is raised by push-pull topology frame and high-frequency-transformer, then rectified into high-voltage DC. At last the high-voltage DC is inverted into AC by Full-bridge. The power can be used in cars on and boats, it can work with solar battery as well. It supplies the AC to the electrical devices conveniently. Base on this power design, by debugging repeatedly and optimizing, the design has reach every target, the design has the feature that high efficiency. low noise, portable. But there is still some shortage and room to optimize.