异步电机矢量控制磁场定向校正技术研究  

Research on Vector Control Flux Orientation Technology of Asynchronous Motor

作　　者：勒国庆[1] 林立[1] 

机构地区：[1]邵阳学院电气工程系,湖南邵阳422000

出　　处：《仪表技术》2017年第3期23-25,39,共4页Instrumentation Technology

基　　金：湖南省科技计划项目经费资助项目(2015GK3033);湖南省科技计划项目经费资助项目(2015GK2033);2015年湖南省普通高等学校教学改革研究项目(NO.440)

摘　　要：矢量控制磁场定向的核心是实现励磁与转矩的独立解耦,其动态性能优异。但是异步电机参数在实际运行中易变化,导致磁场定向不准,进而引起转矩脉动和电机运行性能变差。分析了磁场定向不准引起的电机电压变化,及对转矩电流和励磁电流的影响,提出了基于q轴前馈电压的转子磁场定向校正策略,通过仿真和试验验证了校正策略具有良好的有效性和工程应用价值。The key of vector control flux orientation is to achieve independent decoupling of excitation and torque. Field orientation could be inaccuracy, owning to the change parameters of running motor. It will influence the torque rip- ple and operating performance. In this paper, the voltage change caused by the inaccuracy field orientation is analyzed, and the effect of torque current and exciting current is also analyzed. Then, flux orientation correction strategy is pro- posed based on q-axis feed-forward voltage. Simulation and experiment verify that the correction strategy is effective and has good engineering application value.

关 键 词：矢量控制 磁场定向 转矩脉动 前馈解耦 q轴前馈电压 

分 类 号：TM343[电气工程—电机]