NDLI: An investigation on influence of magnet arc shaping upon back electromotive force waveforms for design of permanent-magnet brushless motors

Content Provider	IEEE Xplore Digital Library
Author	Hsieh, M.F. Hsu, Y.S.
Copyright Year	2005
Description	Author affiliation: Dept. of Syst. & Naval Mechatronic Eng., Nat. Cheng Kung Univ., Tainan, Taiwan (Hsieh, M.F.; Hsu, Y.S.)
Abstract	This paper presents the technique to effectively obtain required back EMF waveforms, e.g., sinusoidal, for permanent-magnet (PM) brushless motors by magnet arc shaping rather than the common stator arc shaping method. Motor back EMF waveforms partly depend on the air-gap flux distribution produced by magnets. Therefore, in this paper, the relationship between the flux distribution of a magnet and its shape is derived using the Laplace's equation so that the magnet shape can be determined in accordance with the back EMF waveform required. Having determined the magnet shape, finite element analysis is employed to verify the effectiveness of the technique developed by comparing the back EMF waveforms of the unmodified arc-shape magnet, the shaped breadloaf and the idea sinusoids. The simulation results show that, by properly shaping the magnets, a back EMF waveform with close approximation to the ideal sinusoid can be obtained, differing from the quasi trapezoidal waveform generated by the original arc shape magnet. Moreover, the results also show that the cogging torque is significantly improved by the magnet shaping. The major advantage of using the developed method is that the required back EMF waveform can be easily obtained at the preliminary design stage so that the entire design efficiency can be improved.
Sponsorship	Magnetics Soc. of Japan Magnetics Soc. of the IEEE
Starting Page	719
Ending Page	720
File Size	195901
Page Count	2
File Format	PDF
ISBN	0780390091
DOI	10.1109/INTMAG.2005.1463788
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-04
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Brushless motors Magnetic flux Shape Stators Permanent magnet motors Air gaps Laplace equations Finite element methods Magnetic analysis Forging
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

An investigation on influence of magnet arc shaping upon back electromotive force waveforms for design of permanent-magnet brushless motors

Calculation Of Cogging Force In A Novel Slotted Linear Tubular Brushless Permanent Magnet Motor

Analytical prediction of cogging torque in spoke type permanent magnet motors

Finite element analysis of interior composite-rotor controllable flux permanent magnet synchronous machine

The influence of permanent magnet parameters on the effectiveness of brushless DC motor with outer rotor

Study of the impact of asymmetrical stator pole arc on the cogging torque for single phase Permanent Magnet BLDC Motor

Calculation of gig air-gap magnetic field in poly-phase multi-pole BLDC motor

The Effect of Magnets Magnetization Direction on Brushless DC Motors by Finite Element Method

Starting Torque of Single-Phase Flux-Switching Permanent Magnet Motors

An investigation on influence of magnet arc shaping upon back electromotive force waveforms for design of permanent-magnet brushless motors

Similar Documents

An investigation on influence of magnet arc shaping upon back electromotive force waveforms for design of permanent-magnet brushless motors

Calculation Of Cogging Force In A Novel Slotted Linear Tubular Brushless Permanent Magnet Motor

Analytical prediction of cogging torque in spoke type permanent magnet motors

Finite element analysis of interior composite-rotor controllable flux permanent magnet synchronous machine

The influence of permanent magnet parameters on the effectiveness of brushless DC motor with outer rotor

Study of the impact of asymmetrical stator pole arc on the cogging torque for single phase Permanent Magnet BLDC Motor

Calculation of gig air-gap magnetic field in poly-phase multi-pole BLDC motor

The Effect of Magnets Magnetization Direction on Brushless DC Motors by Finite Element Method

Starting Torque of Single-Phase Flux-Switching Permanent Magnet Motors

An investigation on influence of magnet arc shaping upon back electromotive force waveforms for design of permanent-magnet brushless motors