基于谐波注入的串联电抗器的减振研究  

Research on Vibration Reduction of Series Reactor Based on Harmonic Injection

作　　者：闫荣格[1,2] 赵文月 陈俊杰 张晓杰[1,2] Yan Rongge;Zhao Wenyue;Chen Junjie;Zhang Xiaojie(State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology,Tianjin 300130 China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province Hebei University of Technology,Tianjin 300130 China)

机构地区：[1]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津300130 [2]河北省电磁场与电器可靠性重点实验室(河北工业大学),天津300130

出　　处：《电工技术学报》2020年第16期3445-3452,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51777054)。

摘　　要：减振降噪是电抗器在制作和应用过程中需要考虑的重要因素,但目前的减振方法多集中在被动减振方面,无法从根源上减小电磁振动。该文针对串联电抗器提出一种基于谐波注入的主动减振方法。首先,根据串联电抗器的振动加速度与其输入功率变化率的正比例关系推导出功率变化率与输入电流的关系,由于电抗器中注入谐波会改变其输入电流的波形,所以提出通过增加反向奇数次谐波激励来降低电抗器的功率变化率,从而抑制电抗器的振动,并利用遗传算法计算出最优的谐波注入量。然后,建立串联电抗器的电磁-机械耦合模型,基于有限元法计算电抗器铁心的电磁振动,对比分析得到注入谐波后串联电抗器的平均减振效果为12.90%。最后,搭建串联电抗器振动实验平台,得到注入谐波后电抗器的振动加速度平均幅值减小为12.75%,验证了仿真结果的正确性。通过仿真与实验证明了该方法对电抗器有很好的减振效果。Vibration and noise reduction are important factors that need to be considered during the production and application of reactors.However,most of the current damping methods focus on passive vibration reduction,which cannot reduce the electromagnetic vibration from the root causes.Therefore,an active vibration reduction method based on harmonic injection is proposed for the series reactor.Firstly,according to the positive proportional relationship between the vibration acceleration of the series reactor and the change rate of input power,the relationship between the change rate of power and the input current was deduced.Because the input harmonics in the reactor could change the waveform of the input current,it was proposed to reduce the change rate of power of the reactor by increasing the reverse odd harmonic excitation,thereby suppressing the vibration of the reactor.The optimal harmonic injection amount was calculated by genetic algorithm.Then,the electromagneticmechanical coupling model of the series reactor was established,and the electromagnetic vibration of the core of the reactor was calculated based on the finite element method.The comprehensive average damping effect of the series reactor after harmonic injection is 12.90%. Finally, the vibration testplatform of series reactor was built. The damping effect of the reactor after harmonic injection is12.75%, which verifies the correctness of the simulation results. The simulation and experiment showthat the method has a good effect on the vibration reduction of the reactor.

关 键 词：串联电抗器 电磁振动 功率变化率 谐波注入 减振 

分 类 号：TM47[电气工程—电器]