Title: Grid voltage control in islanded microgrids with inverter-interfaced power sources
Abstract: The increased amount of distributed generation units connected to the distribution network has led to the development of the microgrid, which can operate in grid-connected or islanded mode. In the islanded microgrid, the mostly inverter-interfaced power sources are responsible for both voltage and power control. Therefore, adequate control algorithms for the microgrid inverters have to be developed. In this paper, an active power / grid voltage droop control strategy is applied for the power control. It is introduced as an outer control loop that determines the set-value of the inner grid voltage control loop. The grid voltage control is performed with different control strategies that are compared in steady-state and in worst-case circumstances. It is shown that the PI and fuzzy logic controller show the best overall performance in the microgrid application.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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Cited By Count: 1
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