NDLI: Closed-loop control strategy for PM machines with non-sinusoidal back-EMFs using dual-inverter open-end winding

Content Provider	IEEE Xplore Digital Library
Author	Mohd Said, N.A. Xiao, D. Dutta, R. Fletcher, J.E.
Copyright Year	2015
Description	Author affiliation: Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia (Mohd Said, N.A.)
Abstract	This paper presents a closed-loop control strategy for dual inverter-fed, permanent magnet synchronous motors with non-sinusoidal back-EMFs. The inverters are connected to both ends of the machine winding but use only one power source, thus providing a path for zero sequence currents to circulate in the motor windings. If neglected, the zero sequence current can cause higher maximum peak and rms phase currents. Moreover, for the PMSM machine, the zero sequence current is heavily influenced by the back-EMF. Therefore, a closed-loop control strategy to suppress the circulation of zero sequence currents and amplitude of the dominant harmonics caused by non-sinusoidal back-EMF is developed and demonstrated by experiment. It is shown to reduce the zero sequence current. The efficiency of the system before and after the suppression of the zero sequence current is also considered. Analysis of experimentally measured efficiency shows that the losses are higher without harmonic suppression which reduces the efficiency.
Sponsorship	IEEE
Starting Page	002998
Ending Page	003003
File Size	863980
Page Count	6
File Format	PDF
e-ISBN	9781479917624
DOI	10.1109/IECON.2015.7392559
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	Harmonic analysis Inverters Power harmonic filters Windings Mathematical model Switches Rotors PI controller Dual inverter open-end winding zero sequence current common mode current
Content Type	Text
Resource Type	Article

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