异步电动机双PWM传动系统数字化实现  

Digital Realization of Induction Drive System Fed by Dual PWM

作　　者：王晓晨[1] 李红梅[1] 沈强 

机构地区：[1]合肥工业大学电气工程系,合肥230009 [2]无为供电公司,无为238300

出　　处：《微电机》2008年第9期26-29,45,共5页Micromotors

基　　金：国家自然科学基金项目(50577013);安徽省教育厅重点项目(KJ2007A062)

摘　　要：基于双PWM技术的异步电动机传动系统以4象限工作、网侧电流近似正弦和功率因数可控等特性受到广泛关注。对系统的整流器采用双闭环矢量控制策略、异步电动机采用VVVF控制,设计了系统的硬件电路和软件,完成了系统基于DSP的数字化实现。实验结果证实了所设计的双PWM系统不仅能正常运行,而且各性能指标均符合要求。Induction motor （IM） drive system fed by dual PWM was concerned of its characteristic of working in four quadrants, almost sinusoidal-wave current at grid side and controllable power factor, etc. Applied dual close-loop vector for controlling the system＇s rectifier and VVVF for controlling the induction motor, moreover, the hardware circuits and software sections were designed in detail to accomplish system＇s digital realization based on DSP. The experimental results validatd that the system can work normally with all performance parameters satisfactory.

关 键 词：双PWM 异步电动机 双闭环矢量控制 VVVF DSP 

分 类 号：TM343[电气工程—电机]