PWM 变流技术在动力电池检测系统中应用研究

摘要

本文介绍了三相 PWM 变流技术在动力电池检测过程中的应用。对该系统的拓扑结构、数学建模、控制策略器及试验系统进行了介绍；并给出了试验结果。试验结果表明：在动力电池充放电过程中，充电时可以给电池提供平滑稳定的直流电压，同时在电池放电过程中将能量回馈给电网，能达到降低供电及回馈电能的谐波含量，达到节能和环保的目的。%Traditional power battery testing equipment adopts uncontrolled rectifier circuit or thy_ristor phase controlled rectifier circuit,so when implementing the battery charging experiment,it can cause harmonic pollution to the grid.Electric energy consumed on the resistances when im_plementing the battery discharging experiment.The paper introduced energy feedback equipment which can provide smooth and stable DC voltage and also can give electric energy back to the grid,so it will reduce the harmonics and achieve the effect of economic energy,conservation and environmental protection.