Coordination Control Strategy for Energy Flow Inside Power Electronic Transformer

Fei XIONG; Chuanjie NIE; Junchi LI; Dong YAN; Xiaolei CHEN

doi:10.7500/AEPS20191204003

您当前的位置：

首页 >

文章列表页 >

Coordination Control Strategy for Energy Flow Inside Power Electronic Transformer

Application Research | 更新时间：2025-06-16

- Coordination Control Strategy for Energy Flow Inside Power Electronic Transformer
- Automation of Electric Power Systems Vol. 44, Issue 15, Pages: 127-138(2020)
- 作者机构：
  
  1. 重庆邮电大学自动化学院，重庆市 400065
  2. 北京交通大学电气工程学院，北京市 100044
- 作者简介：
- 基金信息：
  
  Abstract:
  In the power electronic transformer (PET), when the dynamic response of cascaded H-bridge (CHB) and dual active bridge (DAB) converters is quite different, the voltages of the high and low voltage DC buses will have large fluctuations. To solve this problem, this paper proposes a coordination control strategy for energy flow inside PET. The proposed strategy consists of the CHB control based on total DC bus energy adjustment and the model predictive control of DAB based on DC bus energy coordination. The fluctuations of total DC bus energy are quantitatively assigned to the DC bus on both high and low voltage sides. As a result, the quadratic sum of the relative deviation of DC bus energy on both sides can be minimized. The proposed strategy simplifies the closed-loop control system and the design method of control parameters while improves the dynamic response of DC voltage. Moreover, a compensation control method is presented to suppress second-order power transmission in DAB. The theoretical analysis shows that the proposed control strategy has strong robustness against the inconsistent circuit parameters. The correctness and effectiveness of the proposed method have been validated by simulations.
  Foundation:This work is supported by National Key R&D Program of China
- DOI：10.7500/AEPS20191204003
  CLC：
- Received：04 December 2019，
  
  Revised：2020-04-21，
  
  Published Online：06 June 2020，
  
  Published：10 August 2020
- 稿件说明：
移动端阅览
熊飞,聂川杰,李骏驰等.电力电子变压器的内部能量流动协调控制策略[J].电力系统自动化,2020,44(15):127-138.

XIONG Fei,NIE Chuanjie,LI Junchi,et al.Coordination Control Strategy for Energy Flow Inside Power Electronic Transformer[J].Automation of Electric Power Systems,2020,44(15):127-138.
熊飞,聂川杰,李骏驰等.电力电子变压器的内部能量流动协调控制策略[J].电力系统自动化,2020,44(15):127-138. DOI： 10.7500/AEPS20191204003.

XIONG Fei,NIE Chuanjie,LI Junchi,et al.Coordination Control Strategy for Energy Flow Inside Power Electronic Transformer[J].Automation of Electric Power Systems,2020,44(15):127-138. DOI： 10.7500/AEPS20191204003.

摘要

在电力电子变压器（PET）中，当级联H桥（CHB）和双有源桥（DAB）变换器的动态响应特性差异较大时，高、低压直流母线电压容易出现大幅波动。为解决此问题，文中提出了一种基于PET内部能量流动的协调控制策略。该策略由基于直流母线能量总和调节的CHB控制和基于直流母线能量协调的DAB模型预测控制这2个部分组成，能够将PET直流母线储能总量的波动定量地分配给高、低压直流母线共同承担，以使所有直流母线能量的相对偏差的平方和达到最小。该策略简化了PET闭环控制系统和控制参数设计的复杂性，能够提升直流电压的动态响应性能，并且通过补偿控制的方法有效抑制了DAB中的二次功率传输。理论分析表明，所提控制策略对于电路参数的不一致有较强的鲁棒性。仿真结果验证了所提控制方法的正确性和有效性。

Abstract

In the power electronic transformer (PET)

when the dynamic response of cascaded H-bridge (CHB) and dual active bridge (DAB) converters is quite different

the voltages of the high and low voltage DC buses will have large fluctuations. To solve this problem

this paper proposes a coordination control strategy for energy flow inside PET. The proposed strategy consists of the CHB control based on total DC bus energy adjustment and the model predictive control of DAB based on DC bus energy coordination. The fluctuations of total DC bus energy are quantitatively assigned to the DC bus on both high and low voltage sides. As a result

the quadratic sum of the relative deviation of DC bus energy on both sides can be minimized. The proposed strategy simplifies the closed-loop control system and the design method of control parameters while improves the dynamic response of DC voltage. Moreover

a compensation control method is presented to suppress second-order power transmission in DAB. The theoretical analysis shows that the proposed control strategy has strong robustness against the inconsistent circuit parameters. The correctness and effectiveness of the proposed method have been validated by simulations.

关键词

Keywords

references

XU S , HUANG A Q , BURGOSR . Review of solid-state transformer technologies and their application in power distribution systems [J]. IEEE Journal of Emerging and Selected Topics in Power Electronics , 2013 , 1 ( 3 ): 186 - 198 .

李子欣 , 高范强 , 赵聪 , 等 . 电力电子变压器技术研究综述 [J]. 中国电机工程学报 , 2018 , 38 ( 5 ): 1274 - 1289 .

LI Zixin , GAO Fanqiang , ZHAO Cong , et al . Research review of power electronic transformer technologies [J]. Proceedings of the CSEE , 2018 , 38 ( 5 ): 1274 - 1289 .

HUBER J E , KOLAR J W . Volume/weight/cost comparison of a 1 MVA 10 kV/400 V solid-state against a conventional low-frequency distribution transformer [C]// IEEE Energy Conversion Congress and Exposition , September 14 - 18 , 2014 , Pittsburgh, USA: 4545 - 4552 .

张明锐 , 王之馨 , 黎娜 . 下垂控制在基于固态变压器的高压微电网中的应用 [J]. 电力系统自动化 , 2012 , 36 ( 14 ): 186 - 192 .

ZHANG Mingrui , WANG Zhixin , LI Na . Application of droop control in high-voltage microgrid based on solid state transformer [J]. Automation of Electric Power Systems , 2012 , 36 ( 14 ): 186 - 192 .

张怀天 , 荆龙 , 吴学智 , 等 . 电力电子变压器自治运行控制策略 [J]. 电力系统自动化 , 2018 , 42 ( 4 ): 89 - 94 .

ZHANG Huaitian , JING Long , WU Xuezhi , et al . Control strategy for autonomous operation of power electronic transformer [J]. Automation of Electric Power Systems , 2018 , 42 ( 4 ): 89 - 94 .

赵争鸣 , 冯高辉 , 袁立强 , 等 . 电能路由器的发展及其关键技术 [J]. 中国电机工程学报 , 2017 , 37 ( 13 ): 3823 - 3834 .

ZHAO Zhengming , FENG Gaohui , YUAN Liqiang , et al . The development and key technologies of electric energy router [J]. Proceedings of the CSEE , 2017 , 37 ( 13 ): 3823 - 3834 .

ZHAO C , DUJIC D , MESTER A , et al . Power electronic traction transformer—medium voltage prototype [J]. IEEE Transactions on Industrial Electronics , 2014 , 61 ( 7 ): 3257 - 3268 .

吴俊勇 , 梅东升 , 张巨瑞 , 等 . 一种MW级大功率电池储能变流器关键技术及其工程应用 [J]. 电力建设 , 2016 , 37 ( 8 ): 45 - 51 .

WU Junyong , MEI Dongsheng , ZHANG Jurui , et al . Key technology and its application of MW-scale converter in battery energy storage system [J]. Electric Power Construction , 2016 , 37 ( 8 ): 45 - 51 .

WANG G , XUS , WANG F , et al . Comparisons of different control strategies for 20 kVA solid state transformer [C]// IEEE Energy Conversion Congress and Exposition , September 17 - 22 , 2011 , Phoenix, USA: 3173 - 3178 .

刘建强 , 符里 , 杨景熙 , 等 . 电力电子牵引变压器功率平衡控制方法研究 [J]. 铁道学报 , 2017 , 39 ( 7 ): 44 - 53 .

LIU Jianqiang , FU Li , YANG Jingxi , et al . Research on power balance control method for power electronic traction transformer [J]. Journal of the China Railway Society , 2017 , 39 ( 7 ): 44 - 53 .

王杉杉 , 王玉斌 , 林意斐 , 等 . 级联型电力电子变压器电压与功率均衡控制方法 [J]. 电工技术学报 , 2016 , 31 ( 22 ): 92 - 99 .

WANG Shanshan , WANG Yubin , LIN Yifei , et al . Voltage and power balance control for cascaded multilevel converter based power electronic transformer [J]. Transactions of China Electrotechnical Society , 2016 , 31 ( 22 ): 92 - 99 .

ZHAO T , WANG G , BHATTACHARYA S , et al . Voltage and power balance control for a cascaded H-bridge converter-based solid-state transformer [J]. IEEE Transactions on Power Electronics , 2013 , 28 ( 4 ): 1523 - 1532 .

杨景熙 , 刘建强 , 张捷频 , 等 . 基于双有源桥式DC-DC变换器的电力电子牵引变压器的电压平衡控制 [J]. 电工技术学报 , 2016 , 31 ( 增刊1 ): 119 - 127 .

YANG Jingxi , LIU Jianqiang , ZHANG Jiepin , et al . Voltage balance control of a power electronic traction transformer based on dual active bridge DC-DC converters [J]. Transactions of China Electrotechnical Society , 2016 , 31 ( Supplement 1 ): 119 - 127 .

李响 , 郝瑞祥 , 游小杰 , 等 . 一种级联电力电子变压器直流电压平衡控制策略 [J]. 电工技术学报 , 2017 , 32 ( 2 ): 238 - 245 .

LI Xiang , HAO Ruixiang , YOU Xiaojie , et al . A DC voltage balance control strategy for the cascaded power electronic transformer [J]. Transactions of China Electrotechnical Society , 2017 , 32 ( 2 ): 238 - 245 .

LIU J , YANG J , ZHANG J , et al . Voltage balance control based on dual active bridge DC/DC converters in a power electronic traction transformer [J]. IEEE Transactions on Power Electronics , 2017 , 33 ( 2 ): 1696 - 1714 .

GE J , ZHAO Z , YUAN L , et al . Energy feed-forward and direct feed-forward control for solid-state transformer [J]. IEEE Transactions on Power Electronics , 2015 , 30 ( 8 ): 4042 - 4047 .

TIAN Yanjun , PENG Fei , WANG Yi , et al . Coordinative impedance damping control forback-to-back converter in solar power integration system [J]. IET Renewable Power Generation , 2019 , 13 ( 9 ): 1484 - 1492 .

孙玉巍 , 李永刚 , 刘教民 , 等 . 级联式电力电子变压器协调控制策略 [J]. 中国电机工程学报 , 2018 , 38 ( 5 ): 1290 - 1300 .

SUN Yuwei , LI Yonggang , LIU Jiaomin , et al . Coordinative control strategy for cascaded power electronic transformer [J]. Proceedings of the CSEE , 2018 , 38 ( 5 ): 1290 - 1300 .

SANTE P , MARKUS A , MASTROMAUROR A , et al . A new voltage balancing technique for a three-stage modular smart transformer interfacing a DC multibus [J]. IEEE Transactions on Power Electronics , 2019 , 34 ( 3 ): 2829 - 2840 .

AN F , SONG W , YU B , et al . Model predictive control with power self-balancing of the output parallel DAB DC-DC converters in power electronic traction transformer [J]. IEEE Journal of Emerging and Selected Topics in Power Electronics , 2018 , 6 ( 4 ): 1806 - 1818 .

XIAO Qian , CHEN Linglin , JIA Hongjie , et al . Model predictive control for dual-active-bridge in naval DC micro-grids supplying pulsed power loads featuring fast transition and online transformer current minimization [J]. IEEE Transactions on Industrial Electronics , 2020 , 67 ( 6 ): 5197 - 5203 .

CHEN Linglin , SHAO Shuai , XIAO Qian , et al . Model predictive control for dual-active-bridge converters supplying pulsed power loads in naval DC micro-grids [J]. IEEE Transactions on Power Electronics , 2020 , 35 ( 2 ): 1957 - 1966 .

李剑林 , 田联房 , 王孝洪 , 等 . PWM整流器负载电流前馈控制策略研究 [J]. 电力电子技术 , 2011 , 45 ( 11 ): 58 - 60 .

LI Jianlin , TIAN Lianfang , WANG Xiaohong , et al . Study on load current feedforward control strategy for PWM rectifier [J]. Power Electronics , 2011 , 45 ( 11 ): 58 - 60 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Simplified Electromagnetic Transient Equivalent Model of Multi-active-bridge-based Power Electronic Transformer

Coordinated Control Method for Medium-voltage DC Interconnected Distribution Network Based on Power Electronic Transformer

Arm Energy Compensation Based Model Predictive Control Strategy for Modular Multilevel Converter Under Low-frequency Condition

Related Author

Conghui ZHENG

Wanying XU

Xiaoting WANG

Chenxiang GAO

Jianzhong XU

Chengyong ZHAO

Lin LIN

Zhongchen PEI

Related Institution

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University)

School of Electrical Engineering, Northeast Electric Power University

College of Electrical Engineering, Shanghai University of Electric Power

College of Electronics and Information Engineering, Shanghai University of Electric Power

Shanghai Electric Group Co., Ltd.

⁰