Title

Power Synchronization PID Control Method for Grid-Connected Voltage-Source Converters

Abstract

Power synchronization control of grid-connected voltage source converters (VSC) in high-voltage direct-current (HVDC) transmission is applied as a credible method. However, the non-minimum-phase phenomena in the dynamic models of this system developed through the space-vector approach imposes a significant limitation on the stability margin of the VSC-HVDC converters. This restriction is more pronounced in valtage fault conditions and frequency oscillations. In this paper, a new PID design based on power-synchronization law along with a new approach to power-frequency swing equation has been designed. This new control method has the features of a virtual synchronous machine and is equipped with a highpass filter that robustifies the control operation during severe voltage and frequency instabilities in weak-grid conditions. A thorough analytical explanation of the proposed method along with performance evaluations in Hardware-in-the-loop environment demonstrate the efficacy of the operation and its simple implementation.

Meeting Name

2020 IEEE Kansas Power and Energy Conference, KPEC (2020: Apr. 13-14, Manhattan, KS)

Department(s)

Electrical and Computer Engineering

International Standard Book Number (ISBN)

978-172815391-9

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2020 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

17 Aug 2020

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