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An investigation of high efficiency DC-AC converters for LVDC distribution networks

Zhong, Yanni and Finney, Stephen and Holliday, Derrick (2014) An investigation of high efficiency DC-AC converters for LVDC distribution networks. In: 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014). Institution of Engineering and Technology, pp. 1-6. ISBN 9781849198158

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Abstract

Low voltage DC (LVDC) distribution systems offer improved efficiency and reliability in smart grids. A major challenge facing LVDC systems is DC-AC conversion. A study of an effective low voltage DC-AC converter is therefore presented. Modular Multilevel Converter (MMC) performance (in particular power loss) is compared with a conventional IGBT-based 2-level converter and its advantages highlighted. A phase-shifted sinusoidal PWM based individual voltage balancing strategy for the MMC is presented. A proportional-resonant controller is introduced to eliminate the 2nd harmonic circulating current in the H-bridge MMC converter.

Item type: Book Section
ID code: 50251
Keywords: capacitor voltage balance control, loss calculation, LVDC, MMC, Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
University of Strathclyde > University of Strathclyde
Depositing user: Pure Administrator
Date deposited: 10 Nov 2014 15:24
Last modified: 22 Mar 2017 15:49
Related URLs:
URI: https://strathprints.strath.ac.uk/id/eprint/50251
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