摘要
以并联型有源电力滤波器作为研究对象,采用二极管箝位式三电平拓扑作为系统主电路,提出一种基于60°坐标系的电压空间矢量脉宽调制(SVPWM)算法,简化了传统三电平空间矢量算法的运算过程;分析了三电平拓扑中性点电位波动的原因,在非正交坐标系下,采用DC-DC变换技术实现对中点电位的平衡控制;并在Matlab/Simulink环境下建立了系统仿真模型。仿真结果表明系统具有较好的谐波抑制能力,验证了方案的可行性。
In this paper,the parallel active power filter is taken as the research object.A diode-clamped three-level topology is used as the main circuit of the system.A voltage space vector pulse width modulation(SVPWM)algorithm based on a 60°coordinate system is proposed,which simplifies the operation process of the traditional three-level space vector algorithm.The reason for the potential fluctuation of the neutral point in the three-level topology is analyzed.In the non-orthogonal coordinate system,the DC-DC conversion technology is used to realize the balance control of the neutral point potential.The system simulation model is established in Matlab/Simulink environment.The simulation results show that the system has better harmonic suppression ability,which verifies the feasibility of the scheme.
作者
高素玲
段德功
李子璇
GAO Su-ling;DUAN De-gong;LI Zi-xuan(Anyang Institute of Technology,Anyang 455000,Henan)
出处
《电脑与电信》
2020年第1期28-30,48,共4页
Computer & Telecommunication
基金
安阳市2018年科技发展计划项目“电动汽车充电用三相三电平VIENNA整流技术研究”。
