1.School of Electrical Engineering Beijing Jiaotong University Beijing 100044 China; 2.Beijing Engineering Research Center of Electric Rail Transportation Beijing 100044 China; 3.Locomotive & Car Research Institute China Academy of Railway Sciences Beijing 100081 China
Abstract：High power traction inverter used in railway transit has the characteristic of low switching frequency and wide speed range.The commonly used modulation algorithm is the asynchronous modulation in the low frequency region,and the square wave modulation in fundamental frequency.However,the modulation algorithm in the middle frequency region which is used as the transition between asynchronous modulation and square wave modulation,improving the inverter output harmonic characteristics,is not paid enough attention.The over-modulation and optimal synchronous modulation algorithm in the middle frequency region were studied in this paper.The modulation performance and application range were compared in detail.Simulation and experiments were carried out to verify the correlation analysis.The results show that the optimized synchronous modulation is relatively more complex in digital implementation,but has better harmonic characteristics and wider application prospects.
张钢,董侃,刁利军,刘志刚. 大功率牵引逆变器的中频区调制算法对比研究[J]. 电工技术学报, 2016, 31(增刊2): 1-9.
Zhang Gang,Dong Kan,Diao Lijun,Liu Zhigang. A Comparative Study of the Modulation Algorithm in Middle Frquency Region for High Power Traction Inverter. Transactions of China Electrotechnical Society, 2016, 31(增刊2): 1-9.
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2016, Vol. 31 
