Transactions of China Electrotechnical Society  2015, Vol. 30 Issue (18): 96-103    DOI:
Current Issue| Next Issue| Archive| Adv Search |
A New Type of Harmonic-Current-Excited Brushless Synchronous Machine with Open Windings
Sun Lizhi1, Gao Xiaolong1, Yao Fei1, An Quntao1, Thomas A. Lipo2
1. Harbin Institute of Technology Harbin 150001 China;
2. University of Wisconsin-Madison Madison WI 53706 USA

Download: PDF (24058 KB)   HTML (1 KB) 
Export: BibTeX | EndNote (RIS)      
Abstract  In an open-winding machine, the three-phase stator currents can be controlled to contain the same harmonic current components like the third harmonics. This paper introduces a new harmonic current excitation principle in synchronous machines based on open winding controls. Unlike existing harmonic excitation technologies which utilizing the third harmonic components of rotor magnetic fields, this brushless harmonic excitation principle is realized by injecting the third harmonic current component or high frequency single-phase current component or DC component into the three phase stator open windings, to generate a time pulsating magnetic field which can induce back-EMFs in the specially designed rotor harmonic coils. Through rectification, the induced back-EMFs are used to supply DC current to the rotor excitation winding. To verify the above principle, magnetic field calculations and prototyping tests were carried on. The significance of this harmonic excitation principle is to provide a new brushless machine option to reduce the consumption of increasingly expensive rare earth permanent magnetic material by machines in some applications.
Key wordsSynchronous machine      open-winding      harmonic excitation      finite element analysis     
Received: 02 January 2014      Published: 20 October 2015
PACS: TM341  
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Cite this article:   
URL:  
https://dgjsxb.ces-transaction.com/EN/     OR     https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I18/96
Copyright © Transactions of China Electrotechnical Society
Supported by: Beijing Magtech