DICM and DCVM of a PFC-based SEPIC-fed PMBLDCM Drive

Abstract

This paper deals with two different discontinuous conduction modes of a Power Factor Corrected (PFC) Single Ended Primary Inductor Converter (SEPIC) -fed Permanent Magnet Brushless DC Motor (PMBLDCM) Drive. A novel scheme of speed control of PFC-based SEPIC-fed PMBLDCM drive is proposed using a single voltage sensor. The SEPIC is operated in a Discontinuous Inductor Current Mode (DICM) and Discontinuous Capacitor Voltage Mode (DCVM) feeding PMBLDCM Drive. A Diode Bridge Rectifier (DBR) fed from a single-phase AC supply followed by a SEPIC DC-DC converter is used for power factor correction. A three-phase Voltage Source Inverter (VSI) is used for the electronic commutation of the PMBLDC motor. The speed control is achieved by controlling the DC link voltage of the VSI. A voltage follower approach is used to control the DC link voltage of the front-end SEPIC converter. The developed model of the system is used to simulate the performance of the drive system to achieve improved power quality at AC mains with a wide range of speed control.

Keywords:

• DCM
• DCVM
• DICM
• PFC
• PMBLDCM
• SEPIC
• Voltage control
• VSI

Additional information

Notes on contributors

Bhim Singh

Bhim Singh received his B.E. in Electrical Engineering from the University of Roorkee, Roorkee, India, in 1977, and his M.Tech. and Ph.D. from the Indian Institute of Technology (IIT) Delhi, New Delhi, India, in 1979 and 1983, respectively. Currently, he is Professor in Electrical Engineering Department at Indian Institute of Technology, Delhi. His areas of interest include power electronics, electrical machines and drives, renewable energy systems, active filters, FACTS, HVDC, and power quality. Dr. Singh is a Fellow of the Indian National Academy of Engineering (INAE), the National Science Academy (NSc), the Institute of Electrical and Electronics Engineers (IEEE), the Institute of Engineering and Technology (IET), the Institution of Engineers (India) (IE (I)), and the Institution of Electronics and Telecommunication Engineers (IETE). E-mail: [email protected]

Vashist Bist

Vashist Bist received his Diploma and B.E. in Instrumentation and Control Engineering from Sant Longowal Institute of Engineering and Technology (SLIET Longowal), Distt.- Sangrur, Punjab, India in 2007 and 2010, respectively. He is currently doing PhD. in Department of Electrical Engineering, Indian Institute of Technology, Delhi. His areas of interests include power electronics, electrical machines, and drives. E-mail: [email protected]