A photovoltaic power generation system with peak cut function

Author(s): Mohammed A. Bou-Rabeea*, Dong-Hwa Hanb, Gyu-Ha Choeb
PAAET Dept. of Electrical Eng. College of Technological Studies Kuwait
Electrical Eng. Konkuk University, Seoul, Korea
International Journal of Smart Grid and Clean Energy, vol. 3, no. 1, January 2014: pp. 111-119

ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.3.1.111-119

Abstract: This paper presents a photovoltaic-peak power cutting (PV-PPC) system capable of cutting peak load power. The proposed system is composed of a PV generator, DC-DC converter, storage battery, and an inverter. The function of the proposed PV-PPC system is to use PV energy to cut the peak load power in response to the change in the load demand and generating power. Four possible power flow scenarios are examined in detail through the bidirectional operation of the DC-DC converter and inverter, through the charging and discharging of the battery. The suggested PV-PPC system operation algorithm first selects the operational state by using differentiated charge and load information, with a simple structure to enable stopping in case of system failure, and operates depending on the selected state. Then, the analysis modeling and operational control algorithm of the PV-PPC generation system are performed in detail. Finally, the simulation and experimental results are presented to confirm the validity of the system.

Keywords: PV system, peak power cut, battery, photovoltaic-power conversion system

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