组合滤波功能的异步电机软启动研究  

Study on the Filtering-combined Soft Start for Asynchronous Motor

作　　者：樊立萍[1] 胡文浩[1] 

机构地区：[1]沈阳化工大学信息工程学院,辽宁沈阳110142

出　　处：《电气传动》2011年第9期61-64,共4页Electric Drive

基　　金：国家863重点项目(2008AA042902);中国-保加利亚政府间科技合作项目(12-11);辽宁省教育厅重点实验室项目(LS2010127)

摘　　要：三相异步电动机的直接启动性能较差,启动时过高的电流会对电网和电机本身造成严重冲击。软启动器可根据需要调节启动电流的大小,确保电机平稳启动。但软启动器在使用过程中会产生大量的谐波,对设备的稳定运行及电网造成不良影响。将软启动器技术和有源电力滤波器技术相融合,可构造具有滤波功能的多功能软启动器。仿真运行结果表明,所提出的软启动控制方案在改善电动机启动性能的同时,又削弱了网侧谐波成分,改善了电能质量。The performance of direct starting three-phase asynchronous motor is relatively poor. Its exces sive starting current brings about impact to the grid as well as the motor itself. Soft starters can adjust the starting current as required and make asynchronous motors start smoothly. However, soft starters usually pro- duce harmonic-rich current and have harmful effect on equipments and the grid. A kind of multifunetional soft starter combined the function of soft starter with active power filter were proposed. Simulation operation re- sults show that the proposed approach can not only improve starting performance of the motor, but also get harmonic reduction and ensure to improve power quality.

关 键 词：异步电动机 软启动器 有源电力滤波器 谐波 

分 类 号：TM301.2[电气工程—电机]