摘要
Abstract
When the microgrid is quickly switched on and off under heavy load,the DC bus is easy to produce large voltage fluctuation and a large amount of harmonic current.This problem greatly reduces the efficiency of the system and threatens the stability of the system.In the microgrid environment,when the charging power change rate is too fast,it is easy to cause the above problems.Therefore,in order to solve the problem of DC bus voltage fluctuation caused by fast charging station connected to microgrid,a power control strategy with feedforward power is proposed.When the user needs to charge,combined with the charging characteristics of the rechargeable vehicle and the charging needs of the user,the feedforward power curve is generated and then charged.Through the comparative analysis of MATLAB/Simulink simulation,it is concluded that compared with the control method without feedforward power,this control strategy has the advantages of faster speed,fast and stable DC voltage and less harmonic content,so it has a certain reference value.关键词
快速充电站/前馈功率控制/PWM/谐波电流/充电特性Key words
fast charging station/feedforward power control/PWM/harmonic current/charging characteristics分类
信息技术与安全科学
