Title :
Consequent pole permanent magnet machine with field weakening capability
Author :
Tapia, Juan A. ; Leonardi, Franco ; Lipo, Thomas A.
Author_Institution :
Dept. of Electr. Eng., Concepcion Univ., Chile
Abstract :
The electromagnetic design procedure and laboratory test results are presented in this paper for a consequent pole permanent machine (CPPM) with field weakening capability. Due to its particular configuration, the CPPM allows one to easily control the air-gap flux in a wide range so that the speed range of the machine is increased. Two components of the flux: one-almost constant-coming from the permanent magnet located in the rotor surface of the machine, and the other-variable-coming from a field winding located in the middle of the stator, converge in the air-gap, characterizing the level of excitation of the machine. Preliminary 3D finite element analysis results establish that with 10% of the phase MMF, it is possible to vary the flux in a wide range. A 3 kW, 1000 to 3000 RPM velocity range, 8 pole and 32 AC volt generator using this configuration is tested to verify the flux control capability of this structure
Keywords :
AC motors; air gaps; finite element analysis; machine control; magnetic flux; magnetic variables control; permanent magnet motors; rotors; stators; 3 kW; 32 V; 3D finite element analysis; 8 pole generator; air-gap; air-gap flux control; consequent pole permanent magnet machine; electromagnetic design procedure; field weakening capability; field winding; flux control capability; laboratory test results; phase MMF; rotor surface; stator; Air gaps; Electromagnetic fields; Finite element methods; Laboratories; Machine windings; Magnetic analysis; Permanent magnet machines; Permanent magnets; Stator windings; Testing;
Conference_Titel :
Electric Machines and Drives Conference, 2001. IEMDC 2001. IEEE International
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-7091-0
DOI :
10.1109/IEMDC.2001.939286
