Design of a Five-Phase Brushless DC Motor for a Safety Critical Aerospace Application

Author

Huang, Xiaoyan ; Goodman, Andrew ; Gerada, Chris ; Fang, Youtong ; Lu, Qinfen

Author_Institution

Dept. of Electr. & Electron. Eng., Power Electron. Machines & Control Group, Univ. of Nottingham, Nottingham, UK

Volume

59

Issue

9

fYear

2012

Firstpage

3532

Lastpage

3541

Abstract

This paper describes a five-phase brushless dc (BLDC) motor designed for an electrohydrostatic actuation system (EHA) suited to the thin and optimized wings. The foundation of the design is a motor with fault tolerance and high reliability, compact structure, and low weight. The motor power rating is 12 kW at 12 000 rpm, and a “wet” form of construction is used where hydraulic oil is present in the motor to reduce the number of oil seals of the EHA for enhanced reliability and lifetime. The losses and thermal behavior are evaluated for an optimized design. Fault tolerance for BLDC motors is discussed. A five-phase motor has been manufactured, and test results are presented to validate the design.

Keywords

aircraft power systems; brushless DC motors; fault tolerance; reliability; EHA; electrohydrostatic actuation system; fault tolerance; five-phase BLDC motor; five-phase brushless DC motor; power 12 kW; reliability; safety critical aerospace application; Fault tolerance; Fault tolerant systems; Iron; Rotors; Stators; Torque; Brushless dc (BLDC) motor; electrohydrostatic actuation system (EHA); fault tolerant;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2011.2172170

Filename

6095347