Designing an Energy Storage System Fuzzy PID Controller for Microgrid Islanded Operation

Jong-Yul Kim, Hak-Man Kim, Seul-Ki Kim, Jin-Hong Jeon and Heung-Kwan Choi
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Jong-Yul Kim: New & Renewable Energy System Research Center, Korea Electrotechnology Research Institute/28-1, Seongju-dong, Changwon 641-120, Korea
Hak-Man Kim: Department of Electrical Engineering, University of Incheon/12-1, Sondo-dong, Yeonsu-gu, Incheon 406-840, Korea
Seul-Ki Kim: New & Renewable Energy System Research Center, Korea Electrotechnology Research Institute/28-1, Seongju-dong, Changwon 641-120, Korea
Jin-Hong Jeon: New & Renewable Energy System Research Center, Korea Electrotechnology Research Institute/28-1, Seongju-dong, Changwon 641-120, Korea
Heung-Kwan Choi: New & Renewable Energy System Research Center, Korea Electrotechnology Research Institute/28-1, Seongju-dong, Changwon 641-120, Korea

Energies, 2011, vol. 4, issue 9, 1-18

Abstract: Recently, interest in microgrids, which are composed of distributed generation (DG), distributed storage (DS), and loads, has been growing as a potentially effective clean energy system to mitigate against climate change. The microgrid is operated in the grid-connected mode and the islanded mode according to the conditions of the upstream power grid. The role of the energy storage system (ESS) is especially important to maintain constant the frequency and voltage of an islanded microgrid. For this reason, various approaches for ESS control have been put forth. In this paper, a fuzzy PID controller is proposed to improve the frequency control performance of the ESS. This fuzzy PID controller consists of a fuzzy logic controller and a conventional PI controller, connected in series. The fuzzy logic controller has two input signals, and then the output signal of the fuzzy logic controller is the input signal of the conventional PI controller. For comparison of control performance, gains of each PI controller and fuzzy PID controller are tuned by the particle swam optimization (PSO) algorithm. In the simulation study, the control performance of the fuzzy PID was also tested under various operating conditions using the PSCAD/EMTDC simulation platform.

Keywords: microgrid; islanded operation; fuzzy PID controller; energy storage system (ESS); particle swam optimization (PSO) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2011
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (15)

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