Journal ArticleDOI
Decentralized Coordination Control of Multiple Photovoltaic Sources for DC Bus Voltage Regulating and Power Sharing
Hongda Cai,Ji Xiang,Wei Wei +2 more
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TLDR
A decentralized coordination control strategy that applies the droop concept to cooperate multiple PV sources in a dc microgrid and enables PV sources to regulate the dc bus voltage and share their output power in an expected proportion is developed.Abstract:
DC microgrids provide a coordinated paradigm to facilitate the penetration of photovoltaic (PV) sources due to their direct current essence. Along with the sustained growth of PV penetration, there is an increasing demand on PV sources to participate in dc bus voltage regulating, especially in small-sized or islanded dc microgrids. This paper develops a decentralized coordination control strategy that applies $V$ – $I$ droop concept to cooperate multiple PV sources in a dc microgrid. The proposed method enables PV sources to regulate the dc bus voltage and share their output power in an expected proportion. Furthermore, the maximum power point tracking (MPPT) function is unified in the suggested control method with a $dp/dv$ regulator, which means multiple PV sources can work in the MPPT mode when they are grid-connected or shift with load demands in an coordinated way while keeping the dc bus voltage without switching the control configuration. Hardware-in-loop tests for different scenarios are conducted to validate the feasibility and effectiveness of the proposed control strategy.read more
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References
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Journal ArticleDOI
Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays
TL;DR: In this article, the authors proposed a method of modeling and simulation of photovoltaic arrays by adjusting the curve at three points: open circuit, maximum power, and short circuit.
Journal ArticleDOI
A Variable Step Size INC MPPT Method for PV Systems
TL;DR: A modified variable step size INC MPPT algorithm is proposed, which automatically adjusts the step size to track the PV array maximum power point and can effectively improve the MPPT speed and accuracy simultaneously.
Journal ArticleDOI
Development of a photovoltaic array model for use in power-electronics simulation studies
J.A. Gow,C.D. Manning +1 more
TL;DR: In this article, the authors present a circuit-based simulation model for a PV cell in order to allow the interaction between a proposed power converter (with its associated control arrangement) and the PV array to be studied.
Journal ArticleDOI
A Novel Improved Variable Step-Size Incremental-Resistance MPPT Method for PV Systems
TL;DR: A novel variable step-size incremental-resistance MPPT algorithm is introduced, which not only has the merits of INC but also automatically adjusts the step size to track the PV array MPP.
Journal ArticleDOI
State-of-Charge Balance Using Adaptive Droop Control for Distributed Energy Storage Systems in DC Microgrid Applications
TL;DR: Simulation and experimental results from a 2 × 2.2 kW parallel converter system are presented in order to validate the proposed approach and establish the model of the SoC-based adaptive droop control system, and the system stability is analyzed.