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Position sensorless control of the dual rotary permanent magnet brushless DC motor

Author: GeMing
Tutor: LinRuiGuang
School: Zhejiang University
Course: Motor and electrical
Keywords: Double transgenic permanent magnet brushless DC motor Computer Simulation Propulsion system PWM control
CLC: TM351
Type: Master's thesis
Year: 2005
Downloads: 232
Quote: 2
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Abstract


The high-performance permanent magnets , such as samarium cobalt , the advent of the Nd-Fe-B permanent magnet brushless DC motor performance greatly improve . Engineers are more favored permanent magnet brushless DC motor is because of the following reasons : (1) in addition to permanent magnet brushless DC motor brushes thoroughly eliminates maintenance but also eliminates We do not want the commutation with the spark brush loss and radio interference , and the like; (2) low rotational inertia of the rotor to improve the quality of the mechanical response of the motor , thus shortening the time of motor acceleration and deceleration ; (3) high-coercivity rare - earth permanent magnet materials the use so that the same size of the permanent magnet brushless DC motor is higher than the conventional DC motor efficiency ; (4) Since no mechanical change to part of the structure of the stator is simple . Usually permanent magnet brushless DC motor is constituted by the permanent magnet synchronous motor , inverter , and the position sensor mounted on the rotor shaft . The inverter driving signal and the rotor position signal is synchronized so as to ensure synchronization STATOR WINDING current and rotor magnetic field at an arbitrary speed . The electromagnetic structure of the double transgenic permanent magnet brushless DC motor is basically the same as the ordinary electromagnetic structure of the permanent magnet brushless DC motor , In addition to the permanent magnet part can be rotated , it is part of the armature relative to the still part of the rotation . The double transgenic permanent magnet brushless DC motor applications in turn propulsion system . Promise speed in directly promote dual rotating thrusters turn permanent magnet brushless DC motor is not only to eliminate the complexity of the gears and other mechanical components , but also makes the propulsion system became possible . The main object of study of this paper is dual rotary permanent magnet brushless DC motor position sensor-driven control system research . Means of computer simulation and experimental . Taking into account the two - turn permanent magnet brushless DC motor and permanent magnet brushless DC motor is the general relationship , the idea of this study is to turn from the ordinary single permanent magnet brushless DC motor start ordinary Wing dual rotary permanent magnet brushless DC motor based on magnetic brushless DC motor control strategies and the law of motion , let's analyze the special laws .

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CLC: > Industrial Technology > Electrotechnical > Motor > A special motor > Permanent magnet motor
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