Design Of Power Inverter Based On Mcu Control

With the continuous improvement of our economy, cars have came in the house, car owners need to use more and more electronic products in outdoor, the most products are the cell phones,laptops,MP3 players and so on. Therefore, a novel electric car board-power Inverter became popular, In European and the America country, power inverter has become a necessity part in the car. According to statistics, less than 20% car owners using the power inverter in china, so car inverter have great market prospects in the China.This paper designs a based on MCU control car inverter power supply with digital display, the product can read some typical breakdown, so users can troubleshoot targeted to protect the car's battery cannot be damaged, ensure that the car can start, power switch transfer the input DC voltage to pulse width modulation AC voltage, then use push-pull circuit topology with high-frequency transformer increase the AC voltage, then with full-wave rectifier to convert AC voltage into DC voltage, and finally converter the high DC voltage to AC voltage by the full bridge converter. To avoid the safety issue, during the design progress, several protection circuits are added like the input under voltage,over voltage protection, polarity protection, output over power protection,short circuit protection,over temperature protection. After much debugging and optimization of the design, the power inverter can achieve the design specifications, achieve high efficiency, low noise, small size, can provide stable, reliable power supply. But this power inverter also has some deficiencies, need to do further research, for example, the output wave need to be optimized to standard sine wave so that the load can be applied more widely.