Title :
Design and development of a hybrid excited claw pole synchronous machine
Author :
Melcescu, L.M. ; Cistelecan, Mihail V. ; Popescu, Mihail ; Craiu, Ovidiu
Author_Institution :
Electr. Machines Dept., Politeh. Univ. of Bucharest, Bucharest, Romania
Abstract :
The paper presents a new contactless hybrid excited claw pole synchronous machine. The excitation field is produced by both NdFeB permanent magnets mounted on the rotor, and two fixed coils embedded within machine shields, and fed from a controlled DC source. A 3-D numerical model based on the Finite Element Method (FEM) that takes into account the magnetic circuit nonlinearity and movement of the armature is used to demonstrate the principle of the new excitation system. The no-load and magnetization characteristics, as well as the e.m.f. time dependence are calculated. The main operating characteristics of the manufactured machine have been determined experimentally for motor and generator regimes.
Keywords :
boron alloys; electric potential; finite element analysis; iron alloys; machine theory; magnetic circuits; magnetisation; neodymium alloys; permanent magnet machines; synchronous machines; 3D finite element method; EMF time dependence; NdFeB; controlled DC source; excitation field; hybrid excited claw pole synchronous machine; machine shield; magnetic circuit nonlinearity; magnetization characteristic; noload characteristic; permanent magnet; finite element methods; hybrid excitation synchronous machine; permanent magnets;
Conference_Titel :
Electrical Machines and Power Electronics and 2011 Electromotion Joint Conference (ACEMP), 2011 International Aegean Conference on
Conference_Location :
Istanbul
Print_ISBN :
978-1-4673-5004-4
Electronic_ISBN :
978-1-4673-5002-0
DOI :
10.1109/ACEMP.2011.6490703