一种新型Buck电路调试实验平台的设计与实现

Design and Realization of a New Experiment Platform of Buck Circuit

Buck电路常见于DC-DC系统中。针对不同需求的DC-DC系统,必须对Buck电路进行不同的测试实验,以确保其工作性能符合要求。针对常用物理测试实验系统灵活性欠佳的缺点,设计了Buck电路半实物实验平台。在软件中建立Buck电路测试系统仿真模型,对IGBT#的控制单元利用TMS320F28335实现PWM控制,通过e MEGAsim实时仿真器,将控制单元信号输入到测试系统软件模型中,形成控制回路。通过测量可知,软件系统控制信号能够与控制单元实际输出控制信号保持一致,有效控制Buck电路输出电压值。该实验平台中软件和硬件均能够进行灵活修改,可用于对Buck电路控制单元的性能调控与测试中。

Buck circuit is often used in DC-DC control system. The usual experiment platforms,which are made of real power source,buses and loads,are often uneasy to change the situation. The authors designed a flexible semi-physical experiment platform for testing buck circuit. Simulation models were built in its software, and the hardware of TMS320F28335 was used for PWM control process. Using e MEGAsim simulator,the signals generated in the hardware were sent into the software successfully without change. The whole system is proved to produce obtainable direct current,as well as available for buck circuit function testing experiments.