Experimental validation of a hybrid converter with enhanced switching ripple cancellation

Papadopoulos, Savvas and Klumpner, Christian and Rashed, Mohamed and Wheeler, Patrick (2016) Experimental validation of a hybrid converter with enhanced switching ripple cancellation. IET Power Electronics, 9 (12). pp. 2360-2368. ISSN 1755-4543

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This study presents the experimental evaluation of a proposed new three phase hybrid converter topology for medium voltage applications. The topology is based on the interconnection of a low switching frequency voltage source inverter (VSI), rated at medium voltage, with a high switching frequency low-power rated current source inverter (CSI). The main function of the shunt connected CSI is to cancel the large switching current ripple produced by the VSI while operating at a reduced fundamental voltage enabled by the use of series connected capacitors. The simulations and design procedure outline the possibility of achieving high output grid current quality whilst the added installed power by the CSI remains at <4% compared with the VSI. The experimental results show good correlation between analytical simulated targets of 20% maximum CSI voltage stress albeit with added installed power of 6.7% due to a larger amount of current ripple processed.

Item Type: Article
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Keywords: High switching frequency low-KVA rated current source inverter; Hybrid converter; Series connected capacitors; CSI; Medium voltage applications; Enhanced switching ripple cancellation; Low switching frequency VSI interconnection; High output grid current quality; Three phase hybrid topology
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering > Department of Electrical and Electronic Engineering
Identification Number: https://doi.org/10.1049/iet-pel.2015.0984
Depositing User: Burns, Rebecca
Date Deposited: 05 Oct 2016 09:51
Last Modified: 14 Oct 2016 13:42
URI: http://eprints.nottingham.ac.uk/id/eprint/37351

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