电机与控制应用2024，Vol.51Issue(11)：11-19,中插2,10.DOI:10.12177/emca.2024.122
基于多支路采样法的电流重构技术研究
Research on Current Reconstruction Technology Based on Multiple-Branch Sampling Method
黄玲林 1王爽 1李志伟1
作者信息
- 1. 上海大学 机电工程与自动化学院,上海 200444
- 折叠
摘要
Abstract
[Objective]The DC bus sampling method introduces additional harmonics into the phase current due to the use of pulse width modulation(PWM)phase shifting to compensate for the current reconstruction dead zone.To solve this problem,a phase current reconstruction scheme based on the multiple-branch sampling method was proposed.[Method]A theoretical analysis of the DC bus sampling method and the multiple-branch sampling method was conducted,focusing on the causes of the current reconstruction dead zone.Matlab/Simulink simulations were used for a comparative analysis of both methods.[Results]Simulation results indicated that the multiple-branch sampling method effectively avoided the dead zones in the low modulation index region and sector boundaries present in the DC current sampling method,reduced the harmonic content in the current,and enhanced the accuracy of current reconstruction.Experiments conducted at a motor speed of 60 r/min demonstrated that the maximum error in the reconstructed current was less than 0.5 A.[Conclusion]The experimental results verified the effectiveness and feasibility of the proposed multiple-branch sampling method for current reconstruction.关键词
直流母线采样/电流重构/脉宽调制/多支路采样法Key words
DC bus sampling/current reconstruction technology/pulse width modulation/multiple-branch sampling method分类
信息技术与安全科学引用本文复制引用
黄玲林,王爽,李志伟..基于多支路采样法的电流重构技术研究[J].电机与控制应用,2024,51(11):11-19,中插2,10.
