Controller interaction in parallel connected high frequency grid converters

John, B.; Ghosh, Arindam

doi:10.1109/AUPEC.2016.7749316

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Access Status

Open access

Authors

John, B.

Ghosh, Arindam

Date

2016

Type

Conference Paper

Metadata

Show full item record

Citation

John, B. and Ghosh, A. 2016. Controller interaction in parallel connected high frequency grid converters, in Proceedings of the Australasian Universities Power Engineering Conference (AUPEC), Sep 25-28 2016, pp. 419-124. Brisbane, Australia: IEEE.

Source Title

Proceedings of the 2016 Australasian Universities Power Engineering Conference, AUPEC 2016

DOI

10.1109/AUPEC.2016.7749316

ISBN

9781509014057

School

Department of Electrical and Computer Engineering

Remarks

© 2016 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.

URI

http://hdl.handle.net/20.500.11937/50588

Collection

Curtin Research Publications

Abstract

Recent progress in power electronic converters has increased the number of distributed energy sources to the grid. These converters act as a source of harmonics which connected with other loads affect the stability of power grid. Parallel operation of converters is common in power grid depends on the power sharing needs and current rating of power semiconductor devices. Though, these connections improves power handling capability of grid, the dynamic interaction between converters can affect stability of system. This paper addresses the stability issues in parallel connected, high frequency voltage controlled converters with an output LC filter. Studies on interactions between control loops verifies that, harmonic instability introduced by parallel converters can't be stabilized by traditional PI controllers in real power control loop. A new damping algorithm is introduced to suppress these harmonic oscillations caused by the interaction of controllers in grid connected converters.