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Title: Analysis and mitigation of voltage measurement errors for three-phase parallel voltage source inverters
Authors: Qi, Yang
Liu, Jiazhe
Tang, Yi
Kaushik, Rajashekara
Keywords: Engineering::Electrical and electronic engineering
Islanded Microgrids
Parallel Inverters
Issue Date: 2019
Source: Qi, Y., Liu, J., Tang, Y., & Kaushik, R. (2019). Analysis and mitigation of voltage measurement errors for three-phase parallel voltage source inverters. 2019 IEEE Energy Conversion Congress and Exhibition (ECCE).
Abstract: In islanded microgrids, distributed generations (DGs) have been increasingly employed through voltage source inverters (VSIs). When multiple VSIs operate in parallel, it is important to properly share the load power among them. This paper reveals that voltage measurement errors may deteriorate the power-sharing performance by injecting both positive- and negative-sequence circulating currents. To solve this problem, a combined feedforward and feedback voltage control scheme is proposed. Specifically, the feedforward control is utilized to attenuate the negative impact caused by voltage measurement errors, while the feedback control is adopted for the harmonic mitigation. One salient advantage is that the proposed control scheme is fully decentralized and hence does not require any communications among DGs. Finally, Hardware-in-loop (HIL) simulation results are provided for verification.
Rights: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers
ERI@N Conference Papers
IGS Conference Papers

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