中压大容量传动系统的直流母线谐振建模及抑制方法研究  

Research on Resonance of Bus Capacitor and Cable Inductor in Medium Voltage HighPower Drive System

作　　者：吴汉 鲁哲别 李一粟 王宇翔[1] 李武华[1] WU Han;LU Zhebie;LI Yisu;WANG Yuxiang;LI Wuhua(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China;Shanghai Lingang Power Electronics Research Institute,Shanghai 201315,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310027 [2]上海临港电力电子研究有限公司,上海201315

出　　处：《电工技术》2020年第21期52-56,共5页Electric Engineering

摘　　要：以中压电机对拖测试平台为例,分析了中压大容量传动系统中母线电容与线路电感谐振问题的产生机理、影响因素和解决方案。首先提取谐振网络参数,建立网络模型,然后通过定量计算建立谐振网络的传递函数;从激励源和响应两个部分入手,定量分析改变线路电感对谐振现象的影响程度,提出了一种通过改变载波相位抑制谐波的新方法并分析其作用机理,最后通过仿真验证了理论分析的正确性。Taking the medium-voltage motor towing test platform as an example,the mechanism,influencing factors and solutions of the resonance problem of the bus capacitance and line inductance in the medium-voltage large-capacity transmission system were analyzed.Firstly,the resonance network parameters were extracted and the network model was established.Then,the transfer function of the resonant network is established through quantitative calculation.Starting from the excitation source and response,the influence of changing the line inductance on the resonance phenomenon was quantitatively analyzed.A novel method of harmonic suppression by changing carrier phase was proposed and its mechanism was analyzed.Finally,the correctness of theoretical analysis was verified by simulation.

关 键 词：谐振 母线电容 寄生电感 载波相位 

分 类 号：TM46[电气工程—电器]