NDLI: A novel twelve-step sensor-less control for torque ripple reduction in brushless DC motor

Content Provider	IEEE Xplore Digital Library
Author	Kim, Sung-An Choi, Geo-Seung Lee, Sang-Geon Cho, Yun-Hyun
Copyright Year	2014
Description	Author affiliation: Department of Electrical Engineering, Dong-A University, Busan, Korea (Kim, Sung-An; Lee, Sang-Geon; Cho, Yun-Hyun) \|\| Automotive Product Group, Sam-Hyun, Changwon, Korea (Choi, Geo-Seung)
Abstract	The large torque ripple and decrease of the output torque of brushless DC motor (BLDCM) with sinusoidal back EMF are caused by the current commutation between two phases of the motor. It is the six step 120° drive that is suitable for the motor with an ideal trapezoidal back EMF. This is the significant drawback which will deteriorate the performance of the drive system in high performance and high efficiency applications. To solve the problem, this paper proposes the novel algorithm using novel twelve step sensor-less control to reduce torque ripple and increase of the output torque of BLDCM with sinusoidal back EMF. The proposed algorithm has two commutation process. In the two phase conducting period, rotor position is estimated to control speed of BLDCM. In the three phase conducting period, the slope of duty ratio considering the phase current variation ratio is applied from the calculations of no load duty and load duty according to speed and load conditions of BLDCM. The theoretical basis of the algorithm and individual definition of the control block is explained. The effectiveness of this proposed control is verified by the simulation and experiment according to the comparison of the output characteristics between the traditional and proposed control.
Starting Page	1062
Ending Page	1068
File Size	955464
Page Count	7
File Format	PDF
ISBN	9781479951628
DOI	10.1109/ICEMS.2014.7013645
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Torque Switches Commutation Equations Inverters Switching circuits Brushless DC motors torque ripple BLDCM Sensor-less twelve-step
Content Type	Text
Resource Type	Article

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