摘要
Abstract
In view of the disadvantages of traditional battery charge and discharge system , which puts to use the switch power and DC resistance box and thyristor phase control , a system is designed that could work bi-directionally , with higher efficiency and higher power factor .The system mainly composes of two parts , three-phase VSR and DC/DC in-verter.When the battery needs to charge , the DC/DC converter will work on the buck mode , and the output voltage will be reduced to the appropriate voltage for battery charging;When the battery needs to discharge , the DC/DC in-verter will work on a boost way , and the battery energy could be contra-variant on VSR, then, there must be feedback the power grid by step-up transformer and filtering .Finally, we make a test through a designed prototype .The results show that it can achieve the status by charging and discharging or manually change according to the needs , especially in the implementation of two-way flow of energy at the same time , then, the current waveform of network side will be controlled by sinusoidal wave , and the power factor may be close to 1.关键词
整流/充放电/变换器/功率因数/拓扑Key words
rectifier/charging and discharging/inverter/power factor/topology分类
信息技术与安全科学
