Review of dc–dc converters for multi-terminal HVDC transmission networks

Grain Philip Adam; Islam Azmy Gowaid; Stephen Jon Finney; Derrick Holliday; Barry W. Williams

Review of dc–dc converters for multi-terminal HVDC transmission networks

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Author(s): Grain Philip Adam ¹ ; Islam Azmy Gowaid ² ; Stephen Jon Finney ³ ; Derrick Holliday ⁴ ; Barry W. Williams ⁵
- Affiliations: 1: Electronic and Electrical Engineering, Strathclyde University, Glasgow G1 1RD, UK ;
  2: Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1RD, UK ;
  3: Electrical Engineering, Strathclyde University, Glasgow G1 1XW, UK ;
  4: Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XW, UK ;
  5: Electrical and Electronic Engineering, University of Strathclyde, Glasgow G1 1XW, UK
Source: Volume 9, Issue 2, 10 February 2016, p. 281 – 296
DOI: 10.1049/iet-pel.2015.0530 , Print ISSN 1755-4535, Online ISSN 1755-4543

Received 01/07/2015, Accepted 05/01/2016, Revised 23/12/2015, Published 10/02/2016

This study presents a comprehensive review of high-power dc–dc converters for high-voltage direct current (HVDC) transmission systems, with emphasis on the most promising topologies from established and emerging dc–dc converters. In addition, it highlights the key challenges of dc–dc converter scalability to HVDC applications, and narrows down the desired features for high-voltage dc–dc converters, considering both device and system perspectives. Attributes and limitations of each dc–dc converter considered in this study are explained in detail and supported by time-domain simulations. It is found that the front-to-front quasi-two-level operated modular multilevel converter, transition arm modular converter and controlled transition bridge converter offer the best solutions for high-voltage dc–dc converters that do not compromise galvanic isolation and prevention of dc fault propagation within the dc network. Apart from dc fault response, the MMC dc auto transformer and the transformerless hybrid cascaded two-level converter offer the most efficient solutions for tapping and dc voltage matching of multi-terminal HVDC networks.

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Review of dc–dc converters for multi-terminal HVDC transmission networks

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