Title :
Rotor retaining sleeve design of 1.12MW high-speed PM machine for shipboard power
Author :
Guanghui Du ; Fengge Zhang ; Tianyu Wang ; Guangwei Liu ; Wenping Cao
Author_Institution :
Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang, China
fDate :
Aug. 31 2014-Sept. 3 2014
Abstract :
Permanent magnets hardly bear the large centrifugal force at high-speed rotation, so protective measures must be taken. Nowadays, using the carbon fiber to bindle permanent magnets are commonly used. In this paper, based on a high speed permanent magnet machine (1.12MW, 18000rpm), theory analysis of rotor stress is verified by 3D finite element method. Rotor strength of three different rotor structures and different materials in pole filler is calculated and compared. Effect of running temperature, rotor speed, retaining sleeve thickness and interference between PMs and retaining sleeve are investigated. A new hybrid protective measure is proposed and analyzed. Carbon fiber retaining sleeve and hybrid retaining sleeve are finally designed and the prototypes of the both rotors are produced. The stress tests of both prototypes running at 22000rpm are carried out.
Keywords :
carbon fibres; finite element analysis; marine power systems; permanent magnet machines; rotors; 3D finite element method; carbon fiber; centrifugal force; high speed permanent magnet machine; high-speed rotation; hybrid protective measure; permanent magnets; pole filler; power 1.12 MW; retaining sleeve thickness; rotor retaining sleeve design; rotor speed; rotor strength; rotor stress; rotor structures; running temperature; shipboard power; Carbon; Finite element analysis; Interference; Optical fiber theory; Rotors; Stress; Three-dimensional displays; carbon fiber; high-speed permanent magnet machine; retaining sleeve; rotor stress;
Conference_Titel :
Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-4240-4
DOI :
10.1109/ITEC-AP.2014.6940878
