NDLI: PWM method for open-end winding machines using small triangle space vectors without inverter output clamping

Content Provider	IEEE Xplore Digital Library
Author	Kubo, H. Yamamoto, Y. Kondo, T. Rajashekara, K. Zhu, B.
Copyright Year	2015
Description	Author affiliation: MEIDENSHA Corp., Numazu, Japan (Kubo, H.; Yamamoto, Y.; Kondo, T.) \|\| Univ. of Texas at Dallas, Richardson, TX, USA (Rajashekara, K.; Zhu, B.)
Abstract	The open-end winding machines can be fed by two three-phase inverters. In each phase, three-level voltages are generated by an H-bridge. Three-level PWM can reduce current ripple in α-β frame by using the voltage vectors on the vertices of small triangle. For open-end winding configuration, PWM methods which use the small triangle have been implemented with space vector modulation based techniques. These techniques modulate the voltage by switching one inverter while clamping the other inverter. To distribute switching stress, the role of switching and clamping are alternated between the two inverters based on the area in α-β frame. However, the switching stress is still concentrated to one inverter in low speed because the role change depends on the electrical angle. In this paper, a PWM method which uses the small triangle without clamping the output of inverters is proposed. The method is implemented with carrier based technique. It is realized by alternating two carrier waves which have 90° phase difference depending on the polarity of the reference voltage. The experimental results show that the proposed method can reduce the α-β current ripple as well as the conventional method with clamping.
Sponsorship	IEEE
Starting Page	001639
Ending Page	001644
File Size	1630720
Page Count	6
File Format	PDF
e-ISBN	9781479917624
DOI	10.1109/IECON.2015.7392336
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-11-09
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation Inverters Switches Windings Legged locomotion Clamps
Content Type	Text
Resource Type	Article

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