Tradeoffs between AC power quality and DC bus ripple for 3-phase 3-wire inverter-connected devices within microgrids

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Roscoe, Andrew J. and Finney, Stephen J. and Burt, Graeme M. (2011) Tradeoffs between AC power quality and DC bus ripple for 3-phase 3-wire inverter-connected devices within microgrids. IEEE Transactions on Power Electronics, 26 (3). pp. 674-688. ISSN 0885-8993 (https://doi.org/10.1109/TPEL.2011.2105892)

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Abstract

Visions of future power systems contain high penetrations of inverters which are used to convert power from dc (direct current) to ac (alternating current) or vice versa. The behavior of these devices is dependent upon the choice and implementation of the control algorithms. In particular, there is a tradeoff between dc bus ripple and ac power quality. This study examines the tradeoffs. Four control modes are examined. Mathematical derivations are used to predict the key implications of each control mode. Then, an inverter is studied both in simulation and in hardware at the 10 kVA scale, in different microgrid environments of grid impedance and power quality. It is found that voltage-drive mode provides the best ac power quality, but at the expense of high dc bus ripple. Sinusoidal current generation and dual-sequence controllers provide relatively low dc bus ripple and relatively small effects on power quality. High-bandwidth dc bus ripple minimization mode works well in environments of low grid impedance, but is highly unsuitable within higher impedance microgrid environments and/or at low switching frequencies. The findings also suggest that the certification procedures given by G5/4, P29 and IEEE 1547 are potentially not adequate to cover all applications and scenarios.

ORCID iDs

Roscoe, Andrew J. ORCID logoORCID: https://orcid.org/0000-0003-1108-4265, Finney, Stephen J. ORCID logoORCID: https://orcid.org/0000-0001-5039-3533 and Burt, Graeme M. ORCID logoORCID: https://orcid.org/0000-0002-0315-5919;
  • Item type:Article
    ID code:32354
    Dates:
    Date
    Event
    March 2011
    Published
    Notes:(c) 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, 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 components of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:01 Aug 2011 09:06
    Last modified:30 Nov 2024 01:04
    URI:https://strathprints.strath.ac.uk/id/eprint/32354
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