三相电机驱动系统相电流检测技术的现状以及未来发展趋势  

Current status and development trend of phase current detection technology for three-phase motor drive system

作　　者：邵佳威 蒋全 Shao Jiawei;Jiang Quan(Department of Electrical Engineering,School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200082,China)

机构地区：[1]上海理工大学机械学院电气工程系,上海200082

出　　处：《电子测量技术》2020年第6期134-142,共9页Electronic Measurement Technology

摘　　要：三相电机驱动系统中相电流测量方法是影响伺服电机驱动系统成本和性能的一个重要因素。如何能够在不过多失去精度的要求下,尽可能的减少成本是目前工业界的追求目标。因此在三相驱动器低成本要求的驱动下,学者们提出了多种针对不同需求,不同场合各具特色的相电流测量方法。将这些方法根据其相似特性划分为两大类,分别从最低成本的使用单个采样电阻/传感器的相电流测量方法和3个采样电阻的相电流测量方法出发。首先总结了这些方法的实现原理,然后分析它们各自的特点以及相应存在的局限性,并针对这些局限性提出可能改进的方向,最后通过对系统自身的分析,对未来的三相电机驱动系统内的低成本相电流测量技术的发展趋势进行了讨论和展望。The phase current measurement method is an important factor affecting the cost and performance of the servo motor drive system.How to reduce the cost as much as possible without losing the accuracy requirement is the goal pursued by the current industry.Driven by the low-cost requirements of three-phase drivers,researchers have proposed a variety of phase current measurement methods for different needs and different occasions.This article divides these methods into two categories based on their similar characteristics,starting from the lowest cost phase current measurement method using a single sampling resistor or sensor and the three phase resistor current measurement methods.First,the implementation principles of these methods are summarized,then their respective characteristics and corresponding limitations are analyzed,and possible improvement directions are proposed for these limitations.Finally,by analyzing the system itself,the future three-phase motor drive system The development trend of low-cost phase current measurement technology is discussed and prospected.

关 键 词：三相电机驱动器 相电流测量 电流传感器和电流采样电阻 

分 类 号：TM306[电气工程—电机] TN06[电子电信—物理电子学]