一体化电站并联功率变换系统多模式运行统一控制策略
发布时间：2019-05-21 14:30
【摘要】：为实现电动汽车充放储一体化电站中具有并联、双向运行特性的功率变换系统多模式运行,采用基于三层网络架构的集中控制体系,提出了一种集多种运行模式控制于一体的统一控制策略。该策略下各功率变换单元可依据调度指令在V2G和独立两种运行模式间灵活选取,同时结合单元充放电状态、输出视在功率和电池组荷电状态实现了功率优化分配。此外,针对模式切换过程中负载电压和并网电流波动机理进行分析。在统一控制策略中提出并引入了一种基于内环指令跟踪、外环软切换的双环切换方法,实现了运行模式间的无缝切换。仿真和实验结果验证了所提控制策略的可行性和有效性。
[Abstract]:In order to realize the multi-mode operation of power conversion system with parallel and bidirectional operation characteristics in electric vehicle charging and storage integrated power station, a centralized control system based on three-layer network architecture is adopted. In this paper, a unified control strategy is proposed, which integrates many kinds of operation mode control. Under this strategy, each power conversion unit can be selected flexibly between V2G and independent operation modes according to the scheduling instruction. At the same time, combined with the charge and discharge state of the unit, the output apparent power and the battery pack charge state can be allocated optimally. In addition, the fluctuation mechanism of load voltage and grid-connected current in the process of mode switching is analyzed. In the unified control strategy, a double-loop switching method based on inner loop instruction tracking and outer loop soft switching is proposed and introduced, which realizes seamless switching between running modes. Simulation and experimental results verify the feasibility and effectiveness of the proposed control strategy.
【作者单位】： 华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室;
【基金】：国家自然科学基金(51477067) 光宝电力电子技术科研基金(PRC20161047)资助项目
【分类号】：U491.8
，
本文编号：2482162
[Abstract]:In order to realize the multi-mode operation of power conversion system with parallel and bidirectional operation characteristics in electric vehicle charging and storage integrated power station, a centralized control system based on three-layer network architecture is adopted. In this paper, a unified control strategy is proposed, which integrates many kinds of operation mode control. Under this strategy, each power conversion unit can be selected flexibly between V2G and independent operation modes according to the scheduling instruction. At the same time, combined with the charge and discharge state of the unit, the output apparent power and the battery pack charge state can be allocated optimally. In addition, the fluctuation mechanism of load voltage and grid-connected current in the process of mode switching is analyzed. In the unified control strategy, a double-loop switching method based on inner loop instruction tracking and outer loop soft switching is proposed and introduced, which realizes seamless switching between running modes. Simulation and experimental results verify the feasibility and effectiveness of the proposed control strategy.
【作者单位】： 华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室;
【基金】：国家自然科学基金(51477067) 光宝电力电子技术科研基金(PRC20161047)资助项目
【分类号】：U491.8
，
本文编号：2482162
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