An Alternative Current-Error Based Control for VSC Integration to Weak Grid

Givaki, Kamyab; Chen, Dong; Xu, Lie; Xu, Yan

Abstract

An enhanced current control strategy is proposed for voltage source converters for the integration to weak grids. The
control derives from the current-error based vector control. By implementing simple close-loop compensations of both angle and magnitude inputs to the pulse width modulation, the damping of vector control in the weak grid can be significantly improved hence able to deliver full rated power to very weak grid. Due to the presence of the current loop, the fault-ride-through capability can be maintained with no need for mode switching. A comprehensive frequency domain model is employed to analyze the stability. Time domain simulations are further carried out to validate its effectiveness and robustness of integrating to the weak grid with fault-ride-through capability.

Citation

Givaki, K., Chen, D., Xu, L., & Xu, Y. (2018, August). An Alternative Current-Error Based Control for VSC Integration to Weak Grid. Presented at 2018 IEEE PES General Meeting, Portland, OR, USA

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 2018 IEEE PES General Meeting
• Start Date: Aug 5, 2018
• End Date: Aug 10, 2018
• Acceptance Date: Feb 8, 2018
• Online Publication Date: Dec 24, 2018
• Publication Date: 2018
• Deposit Date: Jul 30, 2018
• Publicly Available Date: Jul 31, 2018
• Publisher: Institute of Electrical and Electronics Engineers
• Series ISSN: 1944-9933
• Book Title: IEEE PES General Meeting 2018
• ISBN: 978-1-5386-7703-2
• DOI: https://doi.org/10.1109/PESGM.2018.8586145
• Keywords: Current Control, Stability, Fault-ride-through, Voltage Source Converter, Weak Grid,
• Public URL: http://researchrepository.napier.ac.uk/Output/1139451
• Contract Date: Jul 31, 2018