Enhanced mode adaptive decentralized controller for inverters supplying a multi-bus microgrid

Author

Xinyao Li ; Dysko, Adam ; Burt, Graeme

Author_Institution

Electron. & Electr. Eng, Univ. of Strathclyde, Glasgow, UK

fYear

2013

fDate

6-9 Oct. 2013

Firstpage

1

Lastpage

5

Abstract

A new decentralized controller for inverters supplying a multi-bus microgrid is developed in this paper. This method improves the operational stability by minimizing the output voltage and angle differences between IIGs. The principle of the proposed controller is different from the conventional (frequency targeted) droop based decentralized method as it emulates a regular grid-connected inverter with output power targeted control, permitting a mode-adaptive operation for both grid-connected and islanded state. Simulation in PSCAD/EMTDC verifies its improved operational stability regardless of the inverter output impedance, compared to the conventional droop based decentralized controller.

Keywords

adaptive control; decentralised control; distributed power generation; invertors; power control; power distribution control; power grids; power system stability; IIG; PSCAD-EMTDC simulation; angle difference minimization; droop based decentralized method; enhanced mode adaptive decentralized controller; grid-connected inverter; inverter output impedance; islanded state; mode-adaptive operation; multibus microgrid; operational stability; output power targeted control; output voltage minimization; Control systems; Impedance; Inverters; Microgrids; Power system stability; Synchronization; Voltage control; Microgrid; inverter control; mode adaptive decentralized controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Innovative Smart Grid Technologies Europe (ISGT EUROPE), 2013 4th IEEE/PES

Conference_Location

Lyngby

Type

conf

DOI

10.1109/ISGTEurope.2013.6695267

Filename

6695267