直线电机振动抑制的载波移相策略研究  

Research on carrier phase shifting strategy for linear motor vibration suppression

作　　者：吴振兴[1] 王逸林 王志伟 冀相 WU Zhen-xing;WANG Yi-lin;WANG Zhi-wei;JI Xiang(National Key Laboratory of Science and Technology on Vessel Integrated Power System,Naval University of Engineering,Wuhan 430032,China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室

出　　处：《电机与控制学报》2019年第12期16-22,31,共8页Electric Machines and Control

基　　金：国家自然科学基金(51507185)

摘　　要：PWM驱动电机系统中,在功率元件开关状态下会产生高频振动。针对变频驱动双三相直线电机会导致高频振动噪声的问题,提出使用载波移相技术降低噪声。首先根据电机高频振动与磁动势之间的关系,推导了互移30°的双三相直线电机磁动势的计算公式,经过分析得出结论:通过调节载波移相角改变电机两绕组电流中的高频谐波的角度差,能够有效地抵消电机合成磁动势的高频分量,降低了电机的径向电磁力和高频振动噪声,且载波移相角选取90°时整体抑制效果最好,并在MATLAB/Simulink环境下进行了仿真验证。最后基于RT-LAB软件搭建了全系统半实物实时仿真实验平台,对本文提出的控制策略及相关的分析进行了实验验证。In the PWM drive motor system,high frequency vibration occurs when the power element switches.Aiming at the problem of high frequency vibration and noise caused by frequency conversion driving multiphase linear motor,a carrier phase shifting technique is proposed to reduce noise.According to the relationship between the motor vibration and the magnetomotive force,the formula for calculating the MMF of a dual shift 30°multiphase linear motor was deduced.The conclusion is that the amplitude of the high frequency component of the motor synthesis magnetomotive force is effectively counteracted by adjusting the carrier shifted angle and the optimal phase-shifting angle is 90 degrees,which was carried out in the MATLAB/Simulink environment.The real-time simulation platform was built based on RT-LAB software,the control strategy proposed in this paper and the related analysis and calculation was verified by experiments.

关 键 词：高频振动噪声 载波移相 直线电机 磁动势 实时仿真 

分 类 号：TM359.4[电气工程—电机] TM464