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Characteristic Analysis of Independent 3 phase BLDC Motor  

Jo, Kwan-Jun (한국해양대 대학원 메카트로닉스)
Oh, Jin-Seok (한국해양대 선박전자기계공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.12, no.4, 2007 , pp. 277-284 More about this Journal
Abstract
This paper describes independent phase BLDC motor with a maximum torque among BLDC motor used for electric propulsion system Independent phase BLDC motor has characteristic that phases of stator we independent electrically. This paper is modeling two type of 3 phases BLDC motors, one has Y-connection type and the other has independent type, and it shows simulation of them, compares its characteristics. As a result of simulation, phase voltage of independent 3 phase BLDC motor is higher than Y-connection three phase BLDC motor. When the stator resistance and inductance are stable, high phase voltage causes an increase in maximum phase current and an increases in it serially causes an increase of maximum torque. It is also found that the current pulsation of independent phase BLDC motor was decreased by controlling phase current of independent BLDC motor.
Keywords
BLDC(Brushless DC) motor; Permanent magnet propulsion motor; H-bridge inverter; Hysteresis current control; current limit control;
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