基于双向DC-DC变换器的电力电子创新实验平台设计

Design of Power Electronics Innovation Experiment Platform Based on Bidirectional DC-DC Converter

传统电力电子实验以知识导向进行教学,主要以验证性实验为主,缺少具有工程背景的项目训练,为此设计双向DC-DC变换器,硬件上采用模块化电路和开放式接口,控制上采用数字处理技术,有助于培养学生应用、设计和创新能力。首先构建基于双向DC-DC变换器的电力电子创新实验平台;其次完成双向DC-DC变换器硬件设计,搭建变换器控制系统;然后介绍变换器拓扑和控制策略,详细给出硬件电路和参数设计,之后对控制系统进行软件设计;最后完成软硬件实验平台测试与分析。实验结果表明,所搭建的实验平台可以实现升压放电运行和降压充电控制,能满足创新性实验教学要求。

Traditional power electronics experiments are knowledge-oriented for teaching,mainly based on confirmatory experiments,and lack of project training with engineering background.For this reason,the modular circuits and open interfaces in hardware,and digital processing technology in control were used in the bidirectional DC-DC converter designed in this paper.Students’application,design and innovation abilities can be cultivated by the bidirectional DC-DC converter.Firstly,the power electronics innovation experimental platform based on bidirectional DC-DC converter was built.Secondly,the hardware design of the bidirectional DC-DC converter was completed,and the converter control system was built.Then the converter topology and control strategy were introduced,the hardware circuit and parameter design were described in detail,and the software design was carried out.Finally,the test and analysis of the software and hardware experimental platform were completed.The experimental results show that the experimental platform built can realize boost discharge operation and buck charge control,which can meet the requirements of innovative experimental teaching.