A Universal Controller for Grid-Connected Voltage-Source Converters

Lennart Harnefors; Jarno Kukkola; Mikko Routimo; Marko Hinkkanen; Xiongfei Wang

doi:10.1109/JESTPE.2020.3039407

A Universal Controller for Grid-Connected Voltage-Source Converters

Lennart Harnefors, Jarno Kukkola, Mikko Routimo, Marko Hinkkanen, Xiongfei Wang

Research output: Contribution to journal › Journal article › Research › peer-review

59 Citations (Scopus)

247 Downloads (Pure)

Abstract

Power-synchronization control (PSC) and vector current control (VCC), the latter including cascaded outer loops, are, respectively, considered to be grid-forming and grid-following schemes. They have significant structural differences. Despite that, it is here shown that the two schemes can be unified by making a series of minor modifications to PSC. This results in a universal controller, allowing various combinations of the two schemes to be explored. Fundamentally, it allows PSC to be used as guideline for a robust VCC design, permitting stable and well-performing operation irrespective of the grid strength.

Original language	English
Article number	9264177
Journal	IEEE Journal of Emerging and Selected Topics in Power Electronics
Volume	9
Issue number	5
Pages (from-to)	5761 - 5770
ISSN	2168-6777
DOIs	https://doi.org/10.1109/JESTPE.2020.3039407
Publication status	Published - Oct 2021

Bibliographical note

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IEEE

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

Grid-connected converters
grid-following control
grid-forming control
robustness
voltage-source converters

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10.1109/JESTPE.2020.3039407

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abstract = "Power-synchronization control (PSC) and vector current control (VCC), the latter including cascaded outer loops, are, respectively, considered to be grid-forming and grid-following schemes. They have significant structural differences. Despite that, it is here shown that the two schemes can be unified by making a series of minor modifications to PSC. This results in a universal controller, allowing various combinations of the two schemes to be explored. Fundamentally, it allows PSC to be used as guideline for a robust VCC design, permitting stable and well-performing operation irrespective of the grid strength.",

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AU - Wang, Xiongfei

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AB - Power-synchronization control (PSC) and vector current control (VCC), the latter including cascaded outer loops, are, respectively, considered to be grid-forming and grid-following schemes. They have significant structural differences. Despite that, it is here shown that the two schemes can be unified by making a series of minor modifications to PSC. This results in a universal controller, allowing various combinations of the two schemes to be explored. Fundamentally, it allows PSC to be used as guideline for a robust VCC design, permitting stable and well-performing operation irrespective of the grid strength.

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A Universal Controller for Grid-Connected Voltage-Source Converters

Abstract

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