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A novel speed and position estimation of the brushless DC motor at low speed

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3 Author(s)
Jaebok Lee ; Sch. of Electr. & Inf. Eng., Univ. of Sydney, Sydney, NSW ; Sathiakumar, S. ; Shrivastava, Y.

A novel estimation technique for speed and position of BLDC motor is proposed. The new estimation method use trapezoidal waveform of back-EMF with speed information. To estimate the trapezoidal waveform of back-EMF, three phase currents information and DC line voltage information of inverter and terminal voltage are used. The proposed new estimation method solves the problem of the BLDC motor drives at low speed and zero speed in Matlab/ Simulink environment. The computer simulations show that the performance of the estimation method is better than other estimation method.

Published in:

Power Engineering Conference, 2008. AUPEC '08. Australasian Universities

Date of Conference:

14-17 Dec. 2008