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Lookup NU author(s): summer Zhan, Dr Simon LambertORCiD, Professor Volker Pickert, Dr Haimeng Wu, Xiang Lu
This is the authors' accepted manuscript of a conference proceedings (inc. abstract) that has been published in its final definitive form by The Institution of Engineering and Technology, 2016.
For re-use rights please refer to the publisher's terms and conditions.
Hybrid electric vehicles (HEVs) and electric vehicles (EVs) have increased in popularity as they use rechargeable battery as energy source instead of petrol, furthermore, help to reduce the release of greenhouse gases. Generally, for applications such as EVs and HEVs, a battery pack may consist of hundreds individual cells batteries in order to meet voltage and energy capacity requirements. However, due to individual chemical characteristics and manufacturing tolerances each cell in a pack will have a slightly different capacity. The capacity of a cell also changes over time as the cell ages. During charging and discharging this leads to unbalanced voltages across the battery pack, and unchecked could result in over-charging/over-discharging for certain cells. This in turn can lead to cell and pack failure or even fire. Therefore, as part of the battery management system a process for voltage equalisation of cells throughout the stack is essential. This paper proposes a new cascaded multi-winding transformer based equalisation circuit topology which, compared to more traditional multi-winding transformerbased topologies is simpler in transformer construction and is therefore far easier to manufacture. The topology concept and operating principals are discussed followed by simulation results for the proposed system. In addition accelerated equalisation speed compared to existing solutions is demonstrated.keywords: {battery powered vehicles;hybrid electric vehicles;network topology;power convertors;transformers;HEV;battery management system;cascaded multiwinding transformer;cascaded transformer-based equalisation converter;equalisation circuit topology;hybrid electric vehicles;rechargeable battery;series connected battery cells;voltage equalisation;EVs;cascaded multi-winding transformer;voltage equalisation},
Author(s): Zhan H, Xiang x, Lambert SM, Pickert V, Wu H, Lu X
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016)
Year of Conference: 2016
Pages: 6-6
Print publication date: 10/11/2016
Online publication date: 10/11/2016
Acceptance date: 19/04/2016
Date deposited: 02/12/2016
ISSN: 9781785611896
Publisher: The Institution of Engineering and Technology
URL: http://dx.doi.org/10.1049/cp.2016.0140
Library holdings: Search Newcastle University Library for this item
Series Title: Power Electronics, Machines and Drives (PEMD 2016), 8th IET International Conference on
ISBN: 9781785611889
