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http://dx.doi.org/10.7236/JIIBC.2021.21.2.143

Development of Position Sensor Detection Circuit using Hall Effect Sensor  

Jeong, Sungin (Dept. of Automotive Engineering, Gwangju University)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.21, no.2, 2021 , pp. 143-149 More about this Journal
Abstract
BLDC motors are getting better performance due to the improvement of material technology including high performance of permanent magnets, advancement of driving IC technology with high integration and high functionality, and improvement of assembly technology such as high point ratio. While having the advantage of such a square wave driven BLDC motor, interest in the design and development of a square wave driven BLDC permanent magnet motor and development of a position detection circuit and driver is increasing in order to more meet the needs of users. However, in spite of the cost and functional advantages due to reduced efficiency, switching loss and vibration, noise, etc., the application is somewhat limited. Therefore, in this paper, we study a position detection circuit that generates a sinusoidal signal in proportion to the magnetic flux of a BLDC motor rotor using a Hall Effect Sensor that generates a sinusoidal wave to increase the efficiency of the motor, reduce ripple, and drive a sinusoidal current with excellent speed and torque characteristics.
Keywords
BLDC; Hall Effect Sensor; Square Wave Driv; Sinusoidal Wave Drive; Efficiency; Torque Ripple;
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