Impedance interaction between islanded parallel voltage source inverters and the distribution network

ISSA, Walid, ABUSARA, M A and SHARKH, S M (2014). Impedance interaction between islanded parallel voltage source inverters and the distribution network. In: Power Electronics, Machines and Drives (PEMD 2014), 7th IET International Conference on. IET.

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Official URL: http://ieeexplore.ieee.org/document/6836899/
Link to published version:: 10.1049/cp.2014.0315

Abstract

In an islanded microgrid consisting of parallel-connected inverters, the interaction between an inverter’s output impedance (dominated by the inverter’s filter and voltage controller) and the impedance of the distribution network (dominated by the other paralleled inverters’ output impedances and the interconnecting power cables) might lead to instability. This paper studies this phenomenon using root locus analysis. A controller based on the second derivative of the output capacitor voltage is proposed to enhance the stability of the system. Matlab simulation results are presented to confirm the validity of the theoretical analysis and the robustness of the proposed controller

Item Type: Book Section
Identification Number: 10.1049/cp.2014.0315
Depositing User: Walid Issa
Date Deposited: 11 May 2017 10:42
Last Modified: 11 May 2017 10:52
URI: http://shura.shu.ac.uk/id/eprint/15264

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