Investigations in the modelling and control of a medium voltage hybrid inverter system that uses a low voltage /low power rated auxiliary current source inverter

Papadopoulos, Savvas; Rashed, Mohamed; Klumpner, Christian; Wheeler, Patrick

Abstract

Hybrid converters consist of a main inverter processing the bulk of the power with poor waveform performance and a fast and versatile auxiliary inverter to correct the distortion. In this paper, the main converter is a medium voltage NPC inverter and the auxiliary inverter is a low-voltage and low-current rated current source inverter (CSI), with series capacitor being used to minimize the CSI voltage stress. The result is a high output current quality which is obtained with a very low switching stress in the main converter and a very small added installed power (<4%) in the CSI. This paper expands this concept by investigating the hybridization of a medium voltage inverter with an existing LCL filter and investigates the additional challenges related to resonances and proposes a solution for stable operation. Experimental validation of active ripple cancellation has been provided at 3kW.

Citation

Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2016). Investigations in the modelling and control of a medium voltage hybrid inverter system that uses a low voltage /low power rated auxiliary current source inverter. IEEE Journal of Emerging and Selected Topics in Power Electronics, 4(1), 126-140. https://doi.org/10.1109/JESTPE.2015.2488631

• Journal Article Type: Article
• Acceptance Date: Oct 8, 2015
• Online Publication Date: Oct 8, 2015
• Publication Date: 2016-03
• Deposit Date: Mar 11, 2016
• Publicly Available Date: Mar 11, 2016
• Journal: IEEE Journal of Emerging and Selected Topics in Power Electronics
• Print ISSN: 2168-6777
• Electronic ISSN: 2168-6785
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 4
• Issue: 1
• Pages: 126-140
• DOI: https://doi.org/10.1109/JESTPE.2015.2488631
• Keywords: Active filters, Noise cancellation, Nonlinear filters
• Public URL: https://nottingham-repository.worktribe.com/output/978000
• Publisher URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7294613
• Additional Information: © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
• Contract Date: Mar 11, 2016