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| Optimization Design of the Random Switching Frequency Control |
| Xia Jiakuan1, Wang Xing1, He Haibo2 |
1.Electrical Engineering School, Shenyang University of Technology, Shenyang 110870;
2.No.712 Institute, China Shipbuilding Industry Corporation, Wuhan 430064 |
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Abstract The random control can make carrier frequency and the integer times nearby harmonic frequency spectrum stretcher and get a uniform continuous spectrum to reduce the amplitude of harmonic wave, thus the electromagnetic noise can be effectively reduced. In order to prevent the oscillation of the random switching frequency control system, this paper proposes a method of extended random range, this method that the big range random consists of the more small scope of random, could make the scope of harmonics spectrum wider, and reduce the amplitude of harmonic wave more effectively, so as to reduce the effect of electromagnetic noise more apparently. The correctness and advantages of this new random switching frequency have been proved by the analysis of simulation contrast.
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Received: 26 June 2014
Published: 26 June 2014
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2013, Vol. 14 
