Submitted on: 19 December 2001.
Revised on: 21 January 2002.
Accepted on: 27 February 2002.
___________________IET Electric Power Applications
Submitted on: 26 March 2010.
Revised on: 21 April 2010.
Accepted on: 22 May 2010.
___________________IET Electric Power Applications
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Submitted on: 27 May 2001.
Revised on: 23 August 2001.
Accepted on: 09 October 2001.
___________________IET Electric Power Applications
http://reply.papertrans.cn/2/122/12161/12161-35.png
Submitted on: 24 December 2023.
Revised on: 17 April 2024.
Accepted on: 07 May 2024.
___________________IET Electric Power Applications