IZDPWM-Based Feedforward Controller for Grid-Connected Inverters Under Unbalanced and Distorted Conditions

Shayestehfard, A. and Mekhilef, S. and Mokhlis, H. (2017) IZDPWM-Based Feedforward Controller for Grid-Connected Inverters Under Unbalanced and Distorted Conditions. IEEE Transactions on Industrial Electronics, 64 (1). pp. 14-21. ISSN 0278-0046

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Official URL: http://dx.doi.org/10.1109/TIE.2016.2595478

Abstract

In grid-connected inverters, a feedforward controller accurately compensates for a large number of the harmonic components of the injected current. This controller is fast and directly tackles the grid dynamic voltage disturbances without doing any further harmonic analysis. A feedforward controller was introduced to a three-phase grid connection with a wye configuration; however, for the widespread delta connections, such a scheme is less established. Moreover, the nonsinusoidal profile of the grid voltage waveform makes the online conversion of line-to-line values into phase values impossible. In this paper, implicit zero-sequence discontinuous pulse width modulation (IZDPWM) based feedforward control is implemented on the two-level grid-connected inverter. Regardless of the grid topology, the IZDPWM-based controller ensures sinusoidal current injection to the grid under balanced, unbalanced, and distorted conditions.

Item Type: Article
Uncontrolled Keywords: Feedforward control; Grid-connected inverters; Implicit zero-sequence discontinuous; Pulse width modulation (IZDPWM); Unbalanced and distorted conditions
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 10 Aug 2017 08:15
Last Modified: 10 Aug 2017 08:15
URI: http://eprints.um.edu.my/id/eprint/17669

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