[1]王 优,郑泽东. 一种母线电压低波动的电力电子变压器[J].控制与信息技术,2017,(04):1-6.[doi:10.13889/j.issn.2095-3631.2017.04.300]
 WANG You,ZHENG Zedong. A Power Electronic Transformer with Low Voltage Ripple in DC Bus[J].High Power Converter Technology,2017,(04):1-6.[doi:10.13889/j.issn.2095-3631.2017.04.300]
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 一种母线电压低波动的电力电子变压器(/HTML)
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《控制与信息技术》[ISSN:2095-3631/CN:43-1486/U]

卷:
期数:
2017年04期
页码:
1-6
栏目:
出版日期:
2017-08-05

文章信息/Info

Title:
 A Power Electronic Transformer with Low Voltage Ripple in DC Bus
文章编号:
2095-3631(2017)04-0000-06
作者:
 王 优郑泽东
 (清华大学 电机工程与应用电子技术系, 北京 100084)
Author(s):
 WANG You ZHENG Zedong
 (Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China)
关键词:
 电力电子变压器 多主动桥 级联H 桥整流器 二倍频电压波动电压波动抑制
Keywords:
 power electronic transformer multiple active bridge cascaded H-bridge rectifier second harmonic voltage fluctuationvoltage ripple suppression
分类号:
TM41
DOI:
10.13889/j.issn.2095-3631.2017.04.300
文献标志码:
A
摘要:
 在中高压配电网中,为了达到高压侧电压等级要求,电力电子变压器(PET)的拓扑中常使用级联H桥作为整流级。由于级联H 桥变换器直流母线分立,在输入单位功率因数下会产生难以滤波消除的直流母线电容电压二倍频低频波动,使得PET 需要使用大容值的直流母线电容器,体积因而大大增加。文章针对采用级联H 桥整流级的三相中高压PET,对其拓扑进行改进,采用多主动桥进行三相悬浮直流母线功率的传递,从而抑制高压侧直流母线电容电压的波动,并减小高压侧直流母线电容器容值。文章论证了新拓扑的可行性,并给出了各变换级的控制策略,同时进行了仿真验证。
Abstract:
 In high-voltage distribution network, cascaded H-bridge converter is often adopted in PET(power electronic transformer).
to reach the voltage level of high-voltage side, As the DC bus of cascaded H-bridge converter has to be separated, the second harmonic voltage ripple fluctuation that is difficult to filter exists in the DC bus when the input unit power factor is achieved, which is difficult to filter, resulting the use of large capacity DC bus capacitor and the increase of volume in the PET. Based on PET with the cascaded H-bridge rectifier in three-phase high-voltage distribution network, this paper proposed an improved topology, in which the multi-active bridge is used to transmit the power in the three-phase suspended DC bus. In the proposed PET topology, voltage fluctuation of the high voltage side DC bus capacitor can be suppressed, and the capacitance of the HVDC bus capacitor can be reduced. In this paper, the working principle of the new topology was discussed and the control strategy of each conversion stage was given. Simulation was done to demonstrate the feasibility of topology and control strategy.

参考文献/References:

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备注/Memo

备注/Memo:
 收稿日期:2017-05-31
作者简介:王优(1994-),女,硕士研究生,主要研究方向为电力电子变压器及能量路由器。
基金项目:国家重点研发计划(2016YFB0900202);北京市自然科学基金资助项目(316001)
更新日期/Last Update: 2017-08-09