新一代高压变频器混合型整流级直流电压脉动研究  

DC-line ripple of hybrid rectifier stage in a new generation of high-voltage inverter

作　　者：徐冬冬 张国澎[2] 黄凯 XU Dongdong;ZHANG Guopeng;HUANG Kai(Tongmei Hufeng Coal Mine,Linfen 041000,China;School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]同煤集团虎峰煤业,山西临汾041000 [2]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《电力系统保护与控制》2020年第15期43-49,共7页Power System Protection and Control

基　　金：国家重点研发计划项目资助(2018YFC0604502);河南省科技攻关项目资助(192102210228);河南理工大学博士基金资助(660807/013)。

摘　　要：混合无桥级联(HybridCascadedBridgeless, HCB)是一种能量单向传输的高压拓扑,作为新一代无工频变压器高压变频器的整流级,可在实现单位功率因数运行的同时,极大的减少全控型器件的使用。但由于其工作过程的特殊性,导致不同类型级联桥的直流侧脉动不一致,这将影响到对直流侧后级供电的一致性。在HCBR运行与控制的基础上,对直流电压脉动不一致的成因进行了分析,推导了适合HCBR可靠运行的直流电压升压比,并给出HCBR直流电容值的设计方法。仿真结果验证了理论分析的正确性。Hybrid Cascaded Bridgeless(HCB) is a high-voltage topology for transmitting energy unidirectionally. The topology can be used as a rectifier stage of a new generation of high-voltage inverter without a line-frequency transformer. A Hybrid Cascaded Bridgeless Rectifier(HCBR) can operate with a unity-power factor efficiently, and a large number of fully-controlled devices will be saved. Because of the special nature of its work process, DC-voltage ripples of two types of cascaded bridges are different. This will affect the power supply for the same DC loads. So, the reasons for DC voltage ripple are analyzed based on the control principle of HCBR. The suitable DC reference voltage for HCBR is deduced. In addition, a design method of DC capacitor value for H-bridge and bridgeless is presented. Finally, simulation results verify the correctness of the theoretical analysis.

关 键 词：混合级联 高压变频 无桥 电压脉动 直流电压 

分 类 号：TM921.51[电气工程—电力电子与电力传动]