Title: High performance deadbeat control for cascaded H-bridge inverter-based variable frequency drive

Authors: Mohamed Trabelsi; Lazhar Ben-Brahim

Addresses: Department of Electrical and Computer Engineering, Texas A&M University at Qatar, Qatar Foundation, Doha, Qatar ' Electrical Department, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar

Abstract: This paper presents an experimental validation of high-performance deadbeat controller with dead-time compensation technique to regulate the current of variable frequency drive (VFD) fed by cascaded H-bridge (CHB) multilevel inverter (MLI). The proposed deadbeat controller is implemented in the synchronous dq frame to track the current references at each sampling time while the dead-time effect is removed by producing appropriate compensating d-q voltages. The proposed controller is characterised by fast transient response, suitable compensation for load disturbances, and accurate compensation of recurring fluctuations. Theoretical analysis and simulation results are validated on a 5 kW experimental setup.

Keywords: deadbeat control; variable frequency drive; VFD; cascaded H-bridge; CHB; multilevel inverter; MLI; dead-time compensation.

DOI: 10.1504/IJIED.2017.084104

International Journal of Industrial Electronics and Drives, 2017 Vol.3 No.3, pp.175 - 184

Received: 27 Nov 2016
Accepted: 11 Mar 2017
Published online: 10 May 2017 *

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