NDLI: Field-Weakening Speed Extension of BLDCM Based on Instantaneous Power Theory

Content Provider	IEEE Xplore Digital Library
Author	Han Kong Guangzhao Cui Anping Zheng
Copyright Year	2010
Abstract	The excitation of BLDCM is provided by the permanent magnet, which has many advantages compared with the conventional DC motor. But for the drive, due to the limit of the bus voltage, the operation with speed higher than base speed needs the flux be reduced. The impossibility for regulating the flux of the permanent magnet has become the bottleneck of the speed extension of motor. A square wave current field-weakening control method based on theory of Instantaneous power is adopted in this paper, which effectively solves the operation difficulty of permanent magnet BLDCM when the speed is higher than the base speed. Compared with the other control modes, this method needs no change of the motor structure, no extra hardware or the complex vector transform. A wide-range speed extension ratio and good operation performance can be achieved by controlling the reactive component Se. The simulation results indicate that the speed range approximates 2:1 for this method, the current shows no distinct distortion and the expected purpose can be reached.
Starting Page	3753
Ending Page	3756
File Size	581120
Page Count	4
File Format	PDF
ISBN	9781424468805
e-ISBN	9781424468812
DOI	10.1109/iCECE.2010.916
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Instantaneous power theory BLDCM Torque Brushless DC motors Field-weakening control Hysteresis motors Permanent magnet motors Reluctance motors
Content Type	Text
Resource Type	Article

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