一种三级式同步电机转矩脉动抑制方法
第19卷一第11期2015年11月一电一机一与一控一制一学一报Electri c 一Machines 一and 一Control 一Vol．19No．11Nov.2015
一一一一一一一种三级式同步电机转矩脉动抑制方法
马鹏,一刘卫国,一毛帅,一骆光照
(西北工业大学自动化学院,陕西西安710072)
摘一要:针对三级式同步电机在电动起动过程中,主发电机的转子励磁脉动导致输出转矩脉动较大二带载起动性能较低的问题,分析了转子励磁脉动对主发电机运行特性的影响,以及在采用矢量控制策略时,由于受到谐波电流的影响而输出的误差电压矢量的分布特点三为了提高主发电机的带载起动性能,本文提出了一种采用极坐标确定控制器调制电压矢量的起动控制方法,与传统的矢量控制策略相比,该方法在一个调节周期内不会产生电压幅值调节误差,仅会产生较小的矢量角调节误差三实验结果表明,在100r /min 转速时,传统矢量控制方法仅能拖动5N 四m 的负载,新方法则能够稳定拖动40N 四m 负载,说明新方法更适合电机在拖动航空发动机起动过程中低转速二大负载的运行工况三
关键词:三级式同步电机;航空发动机;励磁脉动;起动控制;转矩脉动抑制
DOI :10.15938/j.emc.2015.11.015
中图分类号:TM 341文献标志码:A 文章编号:1007-449X(2015)11-0098-06
Torque ripple reduction in three-stage brushless synchronous machines
MA Peng,一LIU Wei-guo,一MAO Shuai,一LUO Guang-zhao
(School of Automation,Northwestern Polytechnical University,Xi an 710072,China)Abstract :Considering the large torque ripple and poor start performance with load which are caused by the excitation current pulsation of the main generator in the electric start process of three-stage brushless synchronous machines,the impact of the excitation current pulsation was analyzed on operating character-istics of the main generator and distribution characteristics of output voltage vector error caused by har-monic currents when vector control strategy was adopted.In order to improve the start performance of the three-stage brushless synchronous machine with load,a start control method was proposed using the polar coordinate to determine the output voltage https://www.wendangku.net/doc/2214806946.html,pared with the traditional vector control strategy,this method does not produce amplitude error,but only small angle error,of the vector voltage.The ex-perimental results show that,at a speed of 100r /min,the electric start system adopting the new method can operate steadily with a load of 40N四m,while for the traditional vector control method,it is only 5N四m.Therefore,the new method is more suitable for the low speed and heavy load operating condi-tions at the start mode of aircraft engines.Keywords :three-stage synchronous machine;aircraft engine;excitation pulsation;start control;torque ripple reduction
收稿日期:2014-09-21
基金项目:国家自然科学基金(51277152)
作者简介:马一鹏(1984 ),男,博士研究生,研究方向为多级电励磁无刷同步电机伺服控制;
刘卫国(1960 ),男,博士,教授,博士生导师,研究方向为永磁电机设计理论及驱动控制技术;
毛一帅(1989 ),男,博士研究生,研究方向为电励磁同步电机驱动控制技术;
骆光照(1972 ),男,博士,教授,博士生导师,研究方向为永磁同步电机驱动控制技术三
通讯作者:马一鹏