基于AVR单片机的直流储能微电网充放电控制系统

Charging and discharging control system of DC energy storage microgrid based on AVR single chip microcomputer

在直流储能微电网充放电控制中,动态响应往往较慢,需要花费大量时间,为此设计一种基于AVR单片机的直流储能微电网充放电控制系统。基于AVR单片机设计充放电控制器,将其作为控制器的微控制芯片;将控制器局域网络协议作为通信协议,选择的数据通信芯片为PCA82C250通信芯片,实现数据通信模块设计;搭建上位机单元与存储器单元,通过DC-DC全桥双向变换器实现回路的调控,利用离散化模块实现充放电控制器的离散化处理;设计回路调控模块,给出直流储能微电网的充电流程与放电流程,完成基于AVR单片机的直流储能微电网充放电控制系统设计。在实际微电网中测试系统的充放电控制性能,结果表明设计系统的动态响应较快,能够实现稳定的充电与放电控制。

In the charge and discharge control of DC energy storage microgrid, the dynamic response is often slow and needs a lot of time. Therefore, a DC energy storage microgrid charge and discharge control system based on AVR microcontroller is designed. The charge and discharge controller is designed based on AVR single chip microcomputer, which is used as the micro-control chip of the controller;The controller local area network protocol is used as the communication protocol, and the selected data communication chip is PCA82C250 communication chip to realize the design of data communication module;The upper computer unit and memory unit are built. The control of the circuit is realized through the DC-DC full-bridge bidirectional converter, and the discrete processing of the charge-discharge controller is realized by the discrete module.It designs the loop control module, gives the charging and discharging process of the DC energy storage microgrid, and completes the design of the charging and discharging control system of the DC energy storage microgrid based on AVR microcontroller. The charging and discharging control performance of the system is tested in the actual microgrid. The results show that the dynamic response of the designed system is fast and can achieve stable charging and discharging control.