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Corresponding Author

Ahmed, Ahmed

Subject Area

Electrical Engineering

Article Type

Original Study

Abstract

Sensorless Brushless DC (BLDC) motors have many advantages because of their greet characteristics which make them an interested field of research home and abroad. One of the biggest issues which face BLDC motors is the rotor position detection, as they are electrically commutated the rotor position must be detected with or without sensors. The position detection is used for commutation, speed measurement and speed control. The traditional method for BLDC motor rotor position detection which depends on Hall sensors has lots of problems that decrease the system reliability, so sensorless BLDC motor drives are extensively used. The sensorless position detection methods mostly use Zero Crossing Point (ZCP) detection techniques which depend on motor back EMF detection. In this paper, a suggested method of ZCP detection for speed measurement is presented for BLDC motor, to decrease driver cost and increase system reliability, also the ZCP detection method can be for commutation and speed measurement. Simulation results are shown to prove system effectiveness

Keywords

BLDC Motor; Sensorless; BLDC; ZCP; Wide speed range & Speed Measurement

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