Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2014.11a
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- Pages.66-67
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- 2014
Analog Controller for Battery to Stabilize DC-bus Voltage of DC-AC Microgrid
- Dam, Duy-Hung (School of Electrical Engineering, University of Ulsan) ;
- Lee, Hong-Hee (School of Electrical Engineering, University of Ulsan)
- Published : 2014.11.28
Abstract
Stabilization of the DC bus voltage is an important task in DC-AC microgrid system with renewable energy source such as solar system. A battery energy storage system (BESS) has become a general solution to stabilize the DC-bus voltage in DC-AC microgrid. This paper develops the analog BESS controller which requires neither computation nor dc-bus voltage measurement, so that the system can be implemented simply and easily. Even though others methods can stabilize and control the DC-bus voltage, it has complicated structure in control and low adaptive capability. The proposed topology is simple but is able to compensate the solar source variation and stabilize the DC-bus voltage under any loads and distributed generation (DG) conditions. In addition, the design of analog controller is presented to obtain a robust system. In order to verify the effectiveness of the proposed control strategy, simulation is carried out by using PSIM software.