光伏-蓄电池联合供电系统中三端口变换器的解耦控制研究

王荣闯; 王杉杉; 高明; 余伟臣; 石健将

doi:10.19912/j.0254-0096.tynxb.2020-0578

PDF(3266 KB)

太阳能学报 ›› 2022, Vol. 43 ›› Issue (3) : 203-209. DOI: 10.19912/j.0254-0096.tynxb.2020-0578

光伏-蓄电池联合供电系统中三端口变换器的解耦控制研究

王荣闯, 王杉杉, 高明, 余伟臣, 石健将

作者信息 +

RESEARCH ON DECOUPLING CONTROL OF THREE-PORT CONVERTER IN PHOTOVOLTAIC-BATTERY GENERATION SYSTEM

Wang Rongchuang, Wang Shanshan, Gao Ming, Yu Weichen, Shi Jianjiang

Author information +

文章历史 +

摘要

为降低光伏-蓄电池联合供电系统中的双Buck/Boost与双有源桥集成式三端口变换器多控制回路间的耦合程度,提出基于小信号模型的解耦控制策略和基于大信号模型的解耦控制策略,并搭建一台400 W的实验样机进行验证。结果表明2种策略均可降低多控制回路的耦合程度,但基于小信号模型的解耦控制效果对于静态工作点敏感程度高,基于大信号模型的解耦控制效果对静态工作点敏感程度低,且在全功率范围内效果均优于基于小信号模型的解耦控制策略。

Abstract

Three-port DC-DC converter based on dual active bridge is one of the key facilities in photovoltaic-battery generation system. The coupling degree is much strong between its two control loops. Two strategies for decoupling are proposed based on small signal model and large signal model. A 400 W experimental prototype was built for verification. The results show that two strategies can both reduce the coupling degree. Meanwhile, the effect of strategy based on large signal model is less sensitive to operation points and is better in most operation conditions compared with strategy based on small signal model.

导出引用

王荣闯, 王杉杉, 高明, 余伟臣, 石健将. 光伏-蓄电池联合供电系统中三端口变换器的解耦控制研究[J]. 太阳能学报. 2022, 43(3): 203-209 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0578

Wang Rongchuang, Wang Shanshan, Gao Ming, Yu Weichen, Shi Jianjiang. RESEARCH ON DECOUPLING CONTROL OF THREE-PORT CONVERTER IN PHOTOVOLTAIC-BATTERY GENERATION SYSTEM[J]. Acta Energiae Solaris Sinica. 2022, 43(3): 203-209 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0578

中图分类号： TM46

参考文献

[1] 孙孝峰, 刘飞龙, 熊亮亮, 等. 双Buck/Boost集成双有源桥三端口DC-DC变换器[J]. 电工技术学报, 2016, 31(22): 73-82.
SUN X F, LIU F L, XIONG L L, et al.Dual Buck/Boost integrated dual active bridge three port DC-DC converter[J]. Transactions of China Electrotechnical Society, 2016, 31(22): 73-82.
[2] 刘福鑫, 阮洁, 阮新波. 一种多端口直流变换器的系统生成方法——采用单极性脉冲电源单元[J]. 中国电机工程学报, 2012, 32(6): 72-80.
LIU F X, RUAN J, RUAN X B.A system approach to synthesize multi-port DC Converters—Adopting unipolar pulsating source cells[J]. Proceedings of the CSEE, 2012, 32(6): 72-80.
[3] SUN X F, SHEN Y F, LI W J, et al.A PWM and PFM hybrid modulated three-port converter for a standalone PV/battery power system[J]. IEEE journal of emerging and selected topics in power electronics, 2015, 3(4): 984-1000.
[4] 吴红飞. 基于功率流分析与重构的直流变换器拓扑衍生理论和方法[D]. 南京: 南京航空航天大学, 2012.
WU H F.Topology derivation theory and method for DC-DC converters via power flow analysis and rebuilding[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2012.
[5] 储凯. 三端口隔离型双向直流/直流变换器的设计与控制[D]. 南京: 东南大学, 2015.
CHU K.Design and control of three-port bidirectional DC/DC converter[D]. Nanjing: Southeast University, 2015.
[6] AN L、LU D D-C. Design of a single-switch DC/DC converter for a PV-battery-powered pump system with PFM+PWM control[J]. IEEE transactions on industrial electronic, 2015, 62(2): 910-921.
[7] 杨旭. 光储发电系统三端口DC/DC变换器硬解耦与控制方法研究[D]. 哈尔滨: 哈尔滨工业大学, 2016.
YANG X.Research on hardware-decoupling and control method of three-port DC/DC converter for pv-storage generation system[D]. Harbin: Harbin Institute of Technology, 2016.
[8] 陈更新, 曼苏乐, 蒋宇宁. 基于谐波分析的LCL双有源桥软开关控制方法[J]. 电力电子技术, 2019, 53(12): 9-11.
CHEN G X, MAN S L, JIANG Y N.Soft switch control method of LCL dual active bridge using harmonic analysis[J]. Power electronics, 2019, 53(12): 9-11.
[9] CHENG T, LU D D C, GONG A, et al. Analysis of a three-port DC-DC converter for PV-battery system using DISO boost and SISO buck converters[C]//2015 Australasian Universities Power Engineering Conference(AUPEC), Wollongong, NSW, Australia, 2015.
[10] 周路遥, 姜久春. LCL谐振型双有源全桥双向DC-DC变换器分析与控制[J]. 电力系统自动化, 2016, 40(19): 82-86, 93.
ZHOU L Y, JIANG J C.Analysis and control of dual-active bridge DC-DC converter based on LCL resonant network[J]. Automation of electric power systems, 2016, 40(19): 82-86,93.
[11] WU H, ZHANG J, QIN X, et al.Secondary-side-regulated soft-switching full-bridge three-port converter based on bridgeless boost rectifier and bidirectional converter for multiple energy interface[J]. IEEE transactions on power electronics, 2016, 31(7): 4847-4860.
[12] WANG W, WANG P B, MA T Y, et al.A simple decoupling control method for isolated three-port bidirectional converter in low-voltage DC microgrids[C]//2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada, 2015.
[13] 孙孝峰, 申彦峰, 李午英, 等. 交错并联双向Buck/Boost集成LLC谐振型三端口直流变换器[J]. 电工技术学报, 2016, 31(14): 165-175.
SUN X F, SHEN Y F, LI W Y, et al.Interleaving bidirectional Buck/Boost and LLC integrated three-port DC-DC converter[J]. Transactions of China Electrotechnical Society, 2016, 31(14): 165-175.
[14] 李玉慈. 一种谐振型双有源桥DC-DC变换器研究[D]. 秦皇岛: 燕山大学, 2017.
LI Y C.A Research of resonant dual-active-bridge DC-DC converter[D]. Qinhuangdao: Yanshan University, 2017.
[15] HUANG J, WANG Y, LI Z Q, et al.Unified triple-phase-shift control to minimize current stress and achieve full soft-switching of isolated bidirectional DC-DC converter[J]. IEEE transactions on industrial electronics, 2016, 63(7): 4169-4179.
[16] 史永胜, 李雷, 丁恩松, 等. 基于双有源桥的三端口变换器回流功率优化控制[J]. 陕西科技大学学报, 2020, 38(1): 142-148.
SHI Y S, LI L, DING E S, et al.Optimal control of return power of three-port converter based on dual active bridge[J]. Journal of Shaanxi University of Science & Technology, 2020, 38(1): 142-148.
[17] 王政, 储凯, 张兵, 等. 移相占空比控制的三端口双向直流变换器[J]. 电机与控制学报, 2015, 19(7): 81-87.
WANG Z, CHU K, ZHANG B, et al.Three-port bidirectional DC/DC converter with duty cycle and phase- shifting control[J]. Electric machines and control , 2015, 19(7): 81-87.
[18] ZHAO B, SONG Q, LIU W H, et al.Current stress optimized switching strategy of isolated bidirectional DC-DC converter with dual-phase-shift control[J]. IEEE transactions on industrial electronics, 2013, 60(10): 4458-4467.