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首页> 外文期刊>Journal of Energy Storage >Power management control strategy using physics-based battery models in standalone PV-battery hybrid systems
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Power management control strategy using physics-based battery models in standalone PV-battery hybrid systems

机译：使用基于物理的电池模型在独立式PV电池混合系统中的电源管理控制策略

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摘要

The rechargeable lithium-ion batteries (LiBs) are becoming a technology of choice for energy storage applications, due to its high energy and power density. In this paper, a power management control strategy is proposed for a standalone PV-Battery Energy Storage (BES) hybrid system. The proposed control algorithm tracks the Maximum Power Point (MPP) of the solar-cells while avoiding overcharging of LiBs under different solar radiation and load conditions. The controller has two regulation modes; (a) MPP Tracking mode, (b) battery state of charge limit mode. The standalone PV-BES hybrid system is represented as a system of differential algebraic equations and enables effective implementation of control algorithms. A physics-based single particle model accounting for internal states of a battery is implemented in the simulation and control algorithm. A mixed-order finite difference method with optimal node spacing and strong stability-preserving time-stepping Runge-Kutta scheme is used to solve the battery model. A case study is provided to demonstrate the effectiveness of the proposed strategy using real world data. The study reveals that the proposed power control strategy is robust and meets multiple objectives of standalone PV-BES hybrid systems such no overcharging, 0% excess output power production, and ensuring no energy is transferred to the dump load.
机译：由于其高能量和功率密度，可充电锂离子电池（LIBS）正在成为能量存储应用的首选技术。本文提出了一种用于独立PV电池储能（BES）混合系统的电力管理控制策略。所提出的控制算法跟踪太阳能电池的最大功率点（MPP），同时避免在不同的太阳辐射和负载条件下的Libs的过充电。控制器有两个调节模式; （a）MPP跟踪模式，（b）电池电量限制模式。独立的PV-BES混合系统表示为差分代数方程的系统，并实现了控制算法的有效实现。电池内部状态的基于物理的单粒子模型算法在仿真和控制算法中实现。利用具有最佳节点间距和强稳定性保存时间步进跳闸-Kutta方案的混合级有限差分方法来解决电池模型。提供案例研究以展示使用现实世界数据的拟议策略的有效性。该研究表明，所提出的功率控制策略是强大的，符合独立PV-BES混合系统的多个目标，即不收费，0％过量输出功率产生，确保没有能量转移到卸载负载。

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