Abstract
The traction system of rail transit has the characteristics of low switching frequency and wide speed range, and generally adopts “asynchronous modulation + synchronous modulation + square wave” full-speed range pulse width modulation strategy. In order to realize the smooth transition from asynchronous modulation to square wave modulation, many excellent modulation methods have been developed in the past 30 years. This paper focusses on researching the space vector pulse width modulation and the specific harmonic elimination pulse width modulation. The principle of the two methods and its harmonic calculation methods are introduced, two methods have different advantages, people should choose their own modulation as needs. Simulation proves the feasibility of the modulation strategy.
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Acknowledgements
This work was supported by National Key R&D plan under Grant 2016YFB1200502-4 and 2017YFB1200802, Beijing Science and School level project 2016RC038.
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Ni, R., Sha, M., Xiaoguang, J., Ding, Y., Chen, J. (2018). Comparison of Harmonics Between SVPWM and SHEPWM. In: Jia, L., Qin, Y., Suo, J., Feng, J., Diao, L., An, M. (eds) Proceedings of the 3rd International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2017. EITRT 2017. Lecture Notes in Electrical Engineering, vol 482. Springer, Singapore. https://doi.org/10.1007/978-981-10-7986-3_51
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DOI: https://doi.org/10.1007/978-981-10-7986-3_51
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