VRB-Boost变换器系统非线性行为对储能系统的影响特性

doi:10.11930/j.issn.1004-9649.2016.11.082.06

中国电力 ›› 2016, Vol. 49 ›› Issue (11): 82-87.DOI: 10.11930/j.issn.1004-9649.2016.11.082.06

VRB-Boost变换器系统非线性行为对储能系统的影响特性

严豪杰¹, 徐晔¹, 王金全¹, 许磊², 严鋆¹

1. 解放军理工大学,江苏南京 210007;
2. 海军91800部队,海南三亚 572000

收稿日期:2016-09-12 出版日期:2016-11-10 发布日期:2016-12-09
作者简介:严豪杰（1992—）,男,陕西西安人,硕士,从事新能源发电与智能微电网的技术研究。E-mail: 923837483@qq.com
基金资助:
解放军理工大学国防工程设备环境及智能化军队重点实验室资助项目（KYFYZXJK1203）

Research on the Nonlinearity Characteristics of VRB-Boost Converter System

YAN Haojie¹, XU Ye¹, WANG Jinquan¹, XU Lei², YAN Jun¹

1. PLA University of Science and Technology, Nanjing 210007, China;
2. Navy 91800, Sanya 572000, China

Received:2016-09-12 Online:2016-11-10 Published:2016-12-09
Supported by:
This work is supported by Army Key Laboratory of Device, Environment and Intelligent System of Defense Engineering (No. KYFYZXJK1203).

摘要/Abstract

摘要： 在钒液流电池Boost变换器系统中,系统参数尤其是钒液流电池（vanadium redox flow batteries,VRB）荷电状态（state of charge,SOC）和负载对系统非线性行为影响较大,是系统安全稳定运行面临的主要问题之一。为此,基于VRB的电气特性建立其数学模型,采用频闪映射方法建立了电流型Boost变换器离散迭代映射模型,结合以上模型建立了VRB-Boost变换器系统统一模型。在系统统一模型基础上分析了SOC和负载R影响系统非线性行为的原因,编程仿真得到系统输出随钒电池SOC和负载R变化的分岔图,通过系统输出分岔图之间的对比,得出钒电池SOC和负载R对系统非线性行为的影响规律,试验结果验证了理论分析的正确性。

关键词: 储能, 微电网, VRB, Boost变换器, SOC, 混沌, 分岔

Abstract: The nonlinear behavior of VRB-Boost converter system is crucial to the safety and stability of microgrid. Furthermore, the nonlinear behavior can be influenced by the state variables, such as the state of charge(SOC) and the load impedance. Firstly, a mathematical model of the vanadium redox flow batteries (VRB) is established based on VRB’s electrical characteristics with consideration of the state of charge. Then, a discrete iterative mapping model of the current-controlled Boost converter is developed based on the stroboscopic mapping method. Thus, an unified model of the VRB-Boost converter system is established based on the above mentioned models. The unified model is then used to analyze the causes of the system’s nonlinear behavior induced by the SOC and load R. Simulation is conducted to obtain the bifurcation diagram of the system output varying with the SOC of VRB and the load R. Through comparison of the bifurcation diagrams under different conditions of state variables, the impact characteristics of the SOC of VRB and load R on the system’s nonlinear behavior are obtained. The experimental results proves the correctness of the theoretical analysis.

Key words: energy storage, micro-grid, vanadium redox flow batteries, boost converter, state of charge, chaos, bifurcation

中图分类号:

TM912

严豪杰, 徐晔, 王金全, 许磊, 严鋆. VRB-Boost变换器系统非线性行为对储能系统的影响特性[J]. 中国电力, 2016, 49(11): 82-87.

YAN Haojie, XU Ye, WANG Jinquan, XU Lei, YAN Jun. Research on the Nonlinearity Characteristics of VRB-Boost Converter System[J]. Electric Power, 2016, 49(11): 82-87.

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https://www.electricpower.com.cn/CN/Y2016/V49/I11/82

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VRB-Boost变换器系统非线性行为对储能系统的影响特性

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VRB-Boost变换器系统非线性行为对储能系统的影响特性

Research on the Nonlinearity Characteristics of VRB-Boost Converter System

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