基于MMC的PET中间隔离级DC-DC变换器的新型模型预测控制策略

doi:10.12204/j.issn.1000-7229.2022.04.006

电力建设 ›› 2022, Vol. 43 ›› Issue (4): 49-57.doi: 10.12204/j.issn.1000-7229.2022.04.006

• 高比例新能源交直流电网特性分析与运行控制·栏目主持辛业春教授、姜涛教授、吴学光教授、宋晓博士· • 上一篇下一篇

基于MMC的PET中间隔离级DC-DC变换器的新型模型预测控制策略

蒋谦¹, 黄志豪¹, 程启明²(), 赵淼圳²(), 傅文倩²()

1.华东送变电工程有限公司,上海市 201803
2.上海市电站自动化技术重点实验室(上海电力大学自动化工程学院),上海市 200090

收稿日期:2021-09-23 出版日期:2022-04-01 发布日期:2022-03-24
通讯作者: 程启明 E-mail:chengqiming@sina.com;364371357@qq.com;1499318429@qq.com
作者简介:蒋谦(1977),男,硕士,高级工程师,主要研究方向为电力系统自动化、再生能源发电、输配电及用电工程等;
黄志豪(1984),男,学士,工程师,主要研究方向为电力系统自动化、可再生能源发电、输配电及用电工程等;
赵淼圳(1995),男,硕士研究生,主要研究方向为电力系统自动化、电力电子变压器等,E-mail: 364371357@qq.com;
傅文倩(1996),女,硕士研究生,主要研究方向为电力系统自动化、电力电子变压器等,E-mail: 1499318429@qq.com。
基金资助:
国家自然科学基金项目(61905139);上海市电站自动化技术重点实验室项目(13DZ2273800)

Novel Model Predictive Control Strategy for MMC-Based DC-DC Converter in the Intermediate Isolation Stage of PET

JIANG Qian¹, HUANG Zhihao¹, CHENG Qiming²(), ZHAO Miaozhen²(), FU Wenqian²()

1. East China Power Transmission Engineering Co., Ltd., Shanghai 201803, China
2. Shanghai Key Laboratory of Power Station Automation Technology (College of Automation Engineering, Shanghai University of Electric Power), Shanghai 200090, China

Received:2021-09-23 Online:2022-04-01 Published:2022-03-24
Contact: CHENG Qiming E-mail:chengqiming@sina.com;364371357@qq.com;1499318429@qq.com
Supported by:
National Natural Science Foundation of China(61905139);Shanghai Key Laboratory Power Station Automation Technology Laboratory(13DZ2273800)

摘要/Abstract

摘要：

针对三级式电力电子变压器(power electronic transformer,PET)中间隔离级DC-DC变换器双侧的模块化多电平换流器(modular multilevel converter,MMC)控制存在的问题,提出了基于价值函数独立的模型预测控制(model predictive control,MPC)的MMC控制方法,对多个控制目标分别建立独立的价值函数,无须配置MPC中价值函数的权重,解决了价值函数的权重配置难问题,且减小了MPC的计算量。另外,针对现有的三级式PET中间隔离级的DC-DC变流器可靠性低、灵活度差、适应范围较小等问题,设计了基于MMC的PET中间隔离级DC-DC变换器拓扑,通过采用双高频变压器的结构,提高了供电的灵活性,实现了PET不间断供电能力。最后搭建系统模型平台,并通过实验验证了所提控制策略的正确性和有效性。

关键词: 电力电子变压器(PET), 模块化多电平换流器(MMC), DC-DC变换器, 模型预测控制(MPC), 独立价值函数

Abstract: Aim

ing at the problems existing in the control of modular multilevel converters (MMC) on both sides of DC-DC converter in the intermediate isolation stage of three-stage power electronic transformer (PET), a control method of model predictive control (MPC) based on independent value function is proposed, which establishes independent value functions for multiple control objectives without configuring the weight of value function in MPC. The method solves the difficult problem of weight allocation of value function in traditional MPC, and reduces the amount of calculation of MPC controller. In addition, aiming at the problems of low reliability, poor flexibility and small adaptability of the existing three-stage DC-DC converter in the intermediate isolation stage of PET, the topology of DC-DC converter based on MMC in the intermediate isolation stage of PET is designed in this paper. The design improves the flexibility of power supply and realizes the uninterrupted power supply ability of PET by adopting the structural design of double high-frequency transformer. Finally, the system model platform is built, and the correctness and effectiveness of the proposed control strategy are verified by experiments.

Key words: power electronic transformer(PET), modular multilevel converter(MMC), DC-DC converter, model predictive control(MPC), independent value function

中图分类号:

TM721.1

蒋谦, 黄志豪, 程启明, 赵淼圳, 傅文倩. 基于MMC的PET中间隔离级DC-DC变换器的新型模型预测控制策略[J]. 电力建设, 2022, 43(4): 49-57.

JIANG Qian, HUANG Zhihao, CHENG Qiming, ZHAO Miaozhen, FU Wenqian. Novel Model Predictive Control Strategy for MMC-Based DC-DC Converter in the Intermediate Isolation Stage of PET[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(4): 49-57.

图/表 8

图1 MMC-PET中间隔离级的电路拓扑

Fig.1 Topology of MMC-based PET isolation stage

图2 新型PET中间隔离级DC-DC变换器单侧的单相等效电路

Fig.2 Single-phase equivalent circuit of one side of novel DC-DC converter in the intermediate isolation stage of PET

图3 FCS-MPC控制系统的结构

Fig.3 Structure of FCS-MPC control system

图4 MMC交流侧电流的MPC策略

Fig.4 MPC strategy of current on MMC alternating side

图5 MMC环流的MPC策略实现的流程

Fig.5 Flow chart of MPC strategy implementation for MMC circulating current

表1 新型DC-DC变换器的系统参数

Table 1 System parameters of the novel DC-DC converter

图6 逆变侧交流电压指令变化时系统响应曲线

Fig.6 System response curve when AC voltage command changes on the inverter side

图7 整流侧直流电压指令变化时系统响应曲线

Fig.7 System response curve when DC voltage command changes on the rectifier side

参考文献 21

[1]	RODRÍGUEZ A, VÁZQUEZ A, LAMAR D G, et al. Different purpose design strategies and techniques to improve the performance of a dual active bridge with phase-shift control[C]// 2014 IEEE 15th Workshop on Control and Modeling for Power Electronics (COMPEL). Santander, Spain: IEEE, 2014: 1-10.
[2]	WANG Z H, ZHANG J M, SHENG K. An isolated bidirectional modular multilevel DC/DC converter for power electronic transformer applications[J]. Journal of Power Electronics, 2016, 16(3):861-871. doi: 10.6113/JPE.2016.16.3.861 URL
[3]	安峰, 王嵩, 杨柯欣. 输入串联输出并联双有源全桥DC-DC变换器多模块优化功率平衡控制方法[J]. 电工技术学报, 2018, 33(16):3732-3742.
	AN Feng, WANG Song, YANG Kexin. Multi-module optimized power balance control scheme of the input-series-output-parallel operated dual-active-bridge DC-DC converters[J]. Transactions of China Electrotechnical Society, 2018, 33(16):3732-3742.
[4]	涂春鸣, 葛钦, 肖凡, 等. 基于光伏电源支撑的多端口固态变压器故障穿越策略[J]. 电工技术学报, 2020, 35(16):3498-3508.
	TU Chunming, GE Qin, XIAO Fan, et al. Fault ride-through control strategy of solid state transformer with PV power generation[J]. Transactions of China Electrotechnical Society, 2020, 35(16):3498-3508.
[5]	GORLA N B Y, KOLLURI S, CHAI M, et al. A comprehensive harmonic analysis and control strategy for improved input power quality in a cascaded modular solid state transformer[J]. IEEE Transactions on Power Electronics, 2019, 34(7):6219-6232.
[6]	NAN C H, AYYANAR R. Dual active bridge converter with PWM control for solid state transformer application[C]// 2013 IEEE Energy Conversion Congress and Exposition. Denver, CO, USA: IEEE, 2013: 4747-4753.
[7]	KHAZRAEI M, PRABHALA V A K, AHMADI R, et al. Solid-state transformer stability and control considerations[C]// 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014. Fort Worth, TX, USA: IEEE, 2014: 2237-2244.
[8]	韩继业, 李勇, 曹一家, 等. 基于模块化多电平型固态变压器的新型直流微网架构及其控制策略[J]. 电网技术, 2016, 40(3):733-740.
	HAN Jiye, LI Yong, CAO Yijia, et al. A new DC microgrid architecture based on MMC-SST and its control strategy[J]. Power System Technology, 2016, 40(3):733-740.
[9]	ADABI M E, MARTINEZ-VELASCO J A, ALEPUZ S. Modeling and simulation of a MMC-based solid-state transformer[J]. Electrical Engineering, 2018, 100(2):375-387. doi: 10.1007/s00202-017-0510-x URL
[10]	ADABI M E, MARTINEZ-VELASCO J A. MMC-based solid-state transformer model including semiconductor losses[J]. Electrical Engineering, 2018, 100(3):1613-1630.
[11]	KENZELMANN S, RUFER A, DUJIC D, et al. Isolated DC/DC structure based on modular multilevel converter[J]. IEEE Transactions on Power Electronics, 2015, 30(1):89-98. doi: 10.1109/TPEL.2014.2305976 URL
[12]	SUN C J, ZHANG J W, CHANG Y R, et al. Wide voltage range operation of isolated modular multilevel DC-DC converter[C]// IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society. Yokohama, Japan: IEEE, 2015: 4953-4958.
[13]	RODRÍGUEZ ALONSO A R, SEBASTIAN J, LAMAR D G, et al. An overall study of a dual active bridge for bidirectional DC/DC conversion[C]// 2010 IEEE Energy Conversion Congress and Exposition. Atlanta, GA, USA: IEEE, 2010: 1129-1135.
[14]	王毅, 许恺, 陈骥群. 双向隔离型DC-DC变换器的双移相优化控制[J]. 电机与控制学报, 2017, 21(8):53-61, 71.
	WANG Yi, XU Kai, CHEN Jiqun. Dual-phase-shifting optimization control of isolated DC-DC converter[J]. Electric Machines and Control, 2017, 21(8):53-61, 71.
[15]	KIM M, ROSEKEIT M, SUL S K, et al. A dual-phase-shift control strategy for dual-active-bridge DC-DC converter in wide voltage range[C]// 8th International Conference on Power Electronics - ECCE Asia. Jeju, Korea (South): IEEE, 2011: 364-371.
[16]	MO R, LI R, LI H. Isolated modular multilevel (IMM) DC/DC converter with energy storage and active filter function for shipboard MVDC system applications[C]// 2015 IEEE Electric Ship Technologies Symposium. Old Town Alexandria, VA, USA: IEEE, 2015: 113-117.
[17]	WANG X Y, TANG G F, HE Z Y, et al. Modeling and control of an isolated module multilevel DC/DC converter for DC grid[J]. CSEE Journal of Power and Energy Systems, 2017, 3(2):150-159. doi: 10.17775/CSEEJPES.2017.0019 URL
[18]	安峰, 宋文胜, 杨柯欣. 电力电子变压器的双有源全桥DC-DC变换器模型预测控制及其功率均衡方法[J]. 中国电机工程学报, 2018, 38(13):3921-3929, 4034.
	AN Feng, SONG Wensheng, YANG Kexin. Model predictive control and power balance scheme of dual-active-bridge DC-DC converters in power electronic transformer[J]. Proceedings of the CSEE, 2018, 38(13):3921-3929, 4034.
[19]	周兵凯, 杨晓峰, 张智, 等. 能量路由器中双有源桥直流变换器多目标优化控制策略[J]. 电工技术学报, 2020, 35(14):3030-3040.
	ZHOU Bingkai, YANG Xiaofeng, ZHANG Zhi, et al. Multi-objective optimization control strategy of dual-active-bridge DC-DC converter in electric energy router application[J]. Transactions of China Electrotechnical Society, 2020, 35(14):3030-3040.
[20]	BÖCKER J, FREUDENBERG B, THE A, et al. Experimental comparison of model predictive control and cascaded control of the modular multilevel converter[J]. IEEE Transactions on Power Electronics, 2015, 30(1):422-430. doi: 10.1109/TPEL.2014.2309438 URL
[21]	ZHANG S, MADAWALA U K. A hybrid model predictive multilayer control strategy for modular multilevel converters[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2019, 7(2):1002-1014.

基于MMC的PET中间隔离级DC-DC变换器的新型模型预测控制策略

Novel Model Predictive Control Strategy for MMC-Based DC-DC Converter in the Intermediate Isolation Stage of PET

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 8

参考文献 21

相关文章 15

编辑推荐

Metrics

本文评价

[1]	魏志文, 罗煜, 曾远方, 赵彪, 崔康生, 李海波, 施健. 中压配电网柔性互联示范工程技术方案设计[J]. 电力建设, 2022, 43(3): 1-11.
[2]	刘志坚, 李晓磊, 梁宁, 郑峰, 伍仰金, 张婷婷. 基于前馈自抗扰的光伏微电网混合储能控制策略[J]. 电力建设, 2021, 42(9): 96-104.
[3]	周月宾, 宋强, 杨柳, 张楠, 李政轩, 曹琬钰. 模块化多电平换流器电容用量的标幺化分析与设计方法[J]. 电力建设, 2021, 42(11): 1-12.
[4]	沈宝兴，林琳，董倩，唐璁，江守其，辛业春. MMC-HVDC孤岛供电系统交流故障穿越协调控制策略[J]. 电力建设, 2020, 41(6): 93-99.
[5]	张明奇，刘麒麟，张英敏. MMC型换流器双极故障电流影响因素分析及其优化[J]. 电力建设, 2020, 41(5): 124-132.
[6]	韩俊，袁栋，谢珍建，何晋伟，刘利国，杜渐，蔡超. 交直流配电网典型形态特征对比与应用模式[J]. 电力建设, 2020, 41(3): 93-99.
[7]	张涌新，沈弘，文俊. 面向综合需求响应的综合能源系统储能控制面向综合需求响应的综合能源系统储能控制[J]. 电力建设, 2019, 40(9): 43-51.
[8]	肖海伟，孙久严2，李章溢，肖浩，张亮，黄娟，裴玮. 基于综合储能设备的工业园区联络线功率实时MPC控制方法[J]. 电力建设, 2019, 40(8): 34-42.
[9]	陈宁，齐磊，崔翔，马江江. 柔性直流电网单极接地短路电流计算方法[J]. 电力建设, 2019, 40(4): 119-127.
[10]	蔡超，窦晓波，曹水晶，陈曦，王娜. 基于模型预测控制的园区热电联供微电网能量优化[J]. 电力建设, 2019, 40(3): 27-33.
[11]	樊强，陆锋，张帆，李钰，赵成勇，许建中. 基于桥臂二倍频电流分量重构的MMC降容控制方法[J]. 电力建设, 2019, 40(2): 87-93.
[12]	傅守强，陈翔宇，王畅，杨林. 基于机会约束规划的多PET互联的交直流配电网日前优化调度[J]. 电力建设, 2019, 40(12): 96-103.
[13]	王坚，王毅，付超. 单向MMC型DC-DC变换器的控制策略[J]. 电力建设, 2018, 39(9): 47-53.
[14]	胡灿，付超，王毅. 直流配电网中MMC的谐波分析与调制方法设计[J]. 电力建设, 2018, 39(7): 81-88.
[15]	董雷，明捷，孟天骄，陈乃仕，蒲天骄. 基于模型预测控制的含柔性直流装置的主动配电网电压控制[J]. 电力建设, 2018, 39(7): 123-128.