小型风电系统充放电控制器的设计

该设计采用STC89C52单片机作为控制器的核心,为了实现对蓄电池电压的采集和显示,系统硬件电路设计主要包含了单片机控制电路、充放电电路,电压采集和显示电路以及PL2302串口通信电路。通过软件设计使单片机输出PWM控制信号,控制蓄电池充放电。此外,加入了具有隔离作用的光电耦合器驱动电路,在一定程度上实现了对蓄电池的保护,同时减少过充、过放、反接带来的影响。实验调试结果说明该控制器能够达到预期目标,可靠性高。

Design of charge and discharge controller for small wind power systems

This design uses STC89C52 single chip microcomputer as the core controller, in order to achieve acquisition and display of the battery voltage, hardware circuit design of the system mainly in-cludes the single chip microcomputer control circuit, charge-discharge circuit, voltage acquisition and display circuit and PL2302 serial communication circuit. Through software design, the single-chip mi-crocomputer output PWM control signal to control the battery charge and discharge. Besides, a photoelec-tric coupler drive circuit with isolation function is joined, protecting the battery to a certain extent, mean-while reducing the influence resulted by excessive charge, over discharge and reverse the impact. The ex-perimental results show that the performance of the controller can realize the desired goal and has high re-liability.