Mobile QR Code QR CODE : The Transactions of the Korean Institute of Electrical Engineers
Title A Charging Circuit for the Power Stotage of Wind Power Generation
Authors 고석철(Ko, Seok-Cheol) ; 강형곤(Kang, Hyeong-Gon) ; 임성훈(Lim, Sung-Hun) ; 한병성(Han, Byoung-Sung) ; 송승호(Song, Seung-Ho)
Page pp.635-644
ISSN 1975-8359
Keywords power storage ; dual step-up/down buck-boost converter ; dual high-frequency half-bridge converter
Abstract Many generating units can be in parallel connection to one battery and inverter. However, one of the biggest problems we encountered is that wind speed is fluctuated sharply in accordance with the unstable weather conditions. To solve this problem, we need energy storage equipment such as storage lead-acid battery. We design a system and analyze its modeling so that it supplies a stable power to the load through DC-AC inverter part. In this paper, we applied dual step-up/down buck-boost converter and dual high-frequency half-bridge converter to the proposed system. These converters are used to store energy in the battery regardless of the change of the wind speed. The operation process of two proposed types of converters for high-power battery charging is discussed along with simulation and experimental result. We design a charging circuit which is applicable in the actual wind power generation system for 30kw and confirm the circuit's validity.