The following information was submitted:
Transactions: INTERNATIONAL JOURNAL of BIOLOGY and BIOMEDICAL ENGINEERING
Transactions ID Number: 19-385
Full Name: Abdel-Karim Daud
Position: Associate Professor
Age: ON
Sex: Male
Address: Electrical and Computer Engineering Department,Palestine Polytechnic University (PPU), P.O. Box 198 Hebron, Palestine
Country: ISRAEL
Tel: 00972-2-2228912
Tel prefix: 00972-2-2250777
Fax: 00972-2-2217248
E-mail address: daud@ppu.edu
Other E-mails: abdodaud@yahoo.com
Title of the Paper: two phase brushless dc motor for artificial heart applications
Authors as they appear in the Paper: Abdel-Karim Daud
Email addresses of all the authors: daud@ppu.edu
Number of paper pages: 8
Abstract: The paper presents a performance analysis of brushless d.c. motor (BLDCM) with two air gap windings for a left ventricular heart assist system. The medical system consists of a bloodpump, a centrifugal pump, a brushless d.c. motor, a solenoid, power supply and controls. The brushless d.c. motor operates sensorless and is developed with respect to the special requirements of an implantable heart assist device. Here should be investigated the effect of rotor magnet design on artificial heart driving motor performance, in which rotors with different magnet lengths or thicknesses, as well as different peripheral angles, were designed and simulated in the same motor stator with different rotating speeds. This simulation is based on the calculation of the air-gap flux density of the motor, which is obtained by using three dimensional analytical field method. Then the motor efficiency was computed. MATLAB was used to implement the procedures to calculate the required par!
ameters. The results demonstrated that the reduction of rotor magnet size and the enlargement of the air gap between the rotor magnets and the stator coil core have no significant effect on motor efficiency, but will reduce the torque value on which the motor achieves the highest efficiency; it could be remedied however by increasing the rotating speed, because the torque at the high efficiency point will increase along with the rotating speed. These results may provide a basis for developing small rotor magnets, large air gap and high efficiency motors for driving an artificial heart pump.
Keywords: Heart Assist System, BLDCM, Permanent Magnets, Sensorless Control, MATLAB
EXTENSION of the file: .doc
Special (Invited) Session: brushless dc motor for medical application
Organizer of the Session: 102-165
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