BLDC motors with surface mounted PM rotor for wide constant power operation

Author

Cros, J. ; Figueroa, J.R. ; Viarouge, P.

Author_Institution

Departement de Genie Electrique & Informatique, Univ. Laval, Ste-Foy, Que., Canada

Volume

3

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

1933

Abstract

This paper presents different methods to adapt the characteristics of surface mounted permanent magnet motors in order to perform a constant mechanical power operation on a wide speed range while minimizing the inverter current rating. Different armature configurations (conventional lap winding, concentrated winding and polyphase claw pole structures with centralized-concentrated windings) are compared by means of simplified analytical design models. A special drive configuration which maximizes torque to amp ratio is also presented. This configuration is using a multi-star winding motor with different number of turns. An experimental validation is presented in the case of a 3-phase brushless DC motor fed by 120° rectangular current waveforms.

Keywords

brushless DC motors; invertors; permanent magnet motors; stators; 3-phase brushless DC motor; armature configurations; centralized-concentrated windings; concentrated winding; constant power operation; drive configuration; inverter current rating minimisation; lap winding; multi-star winding motor; polyphase claw pole structures; rectangular current waveforms; stator structures; surface mounted permanent magnet motors; torque to amp ratio maximisation; Analytical models; Brushless DC motors; DC motors; Inverters; Magnetic analysis; Magnetic flux; Permanent magnet motors; Rotors; Stator windings; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257832

Filename

1257832