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Active power control strategies for inverter-based distributed power generation adapted to grid-fault ride-through requirements

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3 Author(s)
Fei Wang ; Department of Electrical Engineering, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands ; Jorge L. Duarte ; Marcel A. M. Hendrix

Distributed power generation is expected to deliver power into the grid without interruption during voltage dips. To improve system ride-through capabilities, a generalized active power control strategy is proposed for grid-interfacing inverters. Specifically, a current reference generation strategy based on symmetric-sequence components of unbalanced three-phase three-wire or four-wire systems is derived. It is shown that a single adjustable parameter can smoothly change the relative amplitudes of oscillating active and reactive power. This steering possibility enables grid-side inverters to optimally meet different requirements of coming standards. Simulations and experiments are carried out to validate the proposed strategy.

Published in:

Power Electronics and Applications, 2009. EPE '09. 13th European Conference on

Date of Conference:

8-10 Sept. 2009