Research And Application Of High-power Intelligent Charger

By analyzing the charging&discharging characteristics of accumulators, and by improving the hardware and control algorithm of the former chargers, this dissertation designes a high-power charger. The charger can not only charge accumulators with constant voltage and limited current, but also charge them intelligently. Meanwhile, it is characteristic of over-voltage, over-current and overheat protection, self-recovery and automatic current-averaged in parallel. 80C196KC, integrated chip TC787 and transistors are used to be as controller's CPU, synchronizing pulse generator and power converters. The passive filtering technology is used after analyzing the features of passive filtering and active filtering. Fuzzy PID control algorithm is applied to its controller, the reference parameters that MCU needs during operation are gotten by MATLAB simulation, then automatic current-transformation method is adopted to intelligently charge accumulators. Both hardware and software of the whole system have been optimized to make the system have excellent interference-immunity.