低压能量回馈装置中SHEPWM技术的研究  

Study on SHEPWM technology in low pressure energy feedback device

作　　者：罗海静 柳赟[1] LUO Haijing;LIU Yun(School of Electrical and Elecironic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《电气应用》2023年第5期57-66,I0005,共11页Electrotechnical Application

摘　　要：为了提高电力机车中低压能量回馈装置的输出电能质量和工作效率,研究了特定谐波消除脉宽调制技术(SHEPWM)在低压能量回馈装置中的应用,建立了1/4周期对称算法的SHEPWM方程组,采用牛顿迭代法求解得到开关频率为1050 Hz时的两组开关角组合,通过仿真验证了所提方法的有效性及其数值解的正确性,并对比了在不同调制度下采用不同开关角组合的控制效果,为开关角的选择提供了依据。In order to improve the output power quality and work efficiency of low voltage energy feedback device of electric locomotive,this the application of specific harmonic elimination pulse width modulation(SHEPWM)technology in low voltage energy feedback deviceis stucked,and sets up SHEPWM equations of 1/4 period symmetric algorithm.Newton iteration method is used to solve the two groups of switching angle combination when the switching frequency is 1050Hz.The effectiveness of the proposed method and the correctness of the numerical solution are verified by simulation,and the control effects of different switching angle combination under different modulation ratios are compared,which provides a basis for the selection of switching angle.

关 键 词：再生制动能量回馈 1/4周期对称 特定谐波消除 牛顿迭代法 

分 类 号：U264[机械工程—车辆工程]