Title: Loss minimisation of trapezoidal BLDCM drive by UPFC-based optimal switched inverter

Authors: Subhendu Bikash Santra

Addresses: School of Electrical Engineering, KIIT University, Bhubaneswar, Odisha, India

Abstract: This paper presents harmonics behaviour of phase current waveform of trapezoidal BLDC motor drive in 120° conduction mode. Based on the analysis, current switching PWM for 120° mode with selective harmonics elimination is proposed for loss minimisation of brushless DC motor drive system. The proposed control technique uses optimal pulse width modulation to optimise core and copper loss at different sets of loads and speeds. This scheme includes UPFC-based front end converter using double band hysteresis control which improves power quality of conversion. The effectiveness of new control scheme is explained through simulation based on MATLAB/Simulink R2014b. The control scheme is verified on prototype 350 W brushless DC motor drive system.

Keywords: brushless DC (BLDC) motor; unified power flow controller; UPFC; position sensor less control; loss minimisation; selective harmonics elimination; SHE.

DOI: 10.1504/IJPELEC.2019.099340

International Journal of Power Electronics, 2019 Vol.10 No.3, pp.266 - 288

Received: 26 Apr 2017
Accepted: 25 Jul 2017
Published online: 29 Apr 2019 *

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