基于逆变器的异步电机特性模拟及控制技术研究  

Research on Simulation for Characteristics of Asynchronous Motor and Control Strategies Based on Inverters

作　　者：吴政 苏建徽[1] 徐华电 施永[1] WU Zheng;SU Jianhui;XU Huadian;SHI Yong(Research Center for Photovoltaic System Engineering of Ministry of Education,Hefei University of Technology,Hefei 230009,Anhui,China)

机构地区：[1]合肥工业大学教育部光伏系统工程研究中心,安徽合肥230009

出　　处：《电气传动》2017年第10期7-11,共5页Electric Drive

摘　　要：基于逆变器的异步电机及负载模拟系统可取代实际电机和负载实验平台,在便于变频驱动系统实验的同时,可为控制优化提供指导。该系统的电机负载模型的拟合控制是关键技术之一,针对异步电机及其负载的模拟,提出一种基于虚拟转子磁链定向的电流闭环矢量控制策略。该策略可适应端口输入电压的任意变化,并保证模型电流跟踪的快速性和准确性,满足电机模拟器的稳态和瞬态电压电流外特性关系要求。对电机的空载启动、突加负载和电源三相不平衡3种典型工况进行了仿真,结果验证了所提方案的正确性和可行性。The test platform of actual electrical machines and their associated mechanical loads can be replacedby the motor emulator system based on inverters.The system is convenient for the tests of frequency conversion drivingand provides guidance for control optimization.Fitting mechanical load model is a key technology of the system,inorder to simulate asynchronous motors and their loads,a current closed-loop vector control strategy based on virtualrotor flux orientation was proposed.The control strategy adapts to arbitrary input voltage and guarantees the speed andaccuracy of port current tracking.Moreover,it meets the requirements of the relationship between voltage and currentof the motor emulator in both steady and transient state.No-load starting,sudden loading and three phase unbalance ofinduction motor had been simulated,and the results of simulation verifiy the validity and feasibility of the scheme.

关 键 词：电机驱动器 电机模拟器 电机数学模型 电流跟踪 

分 类 号：TM46[电气工程—电器]