Open Access Journal

ISSN : 2395-2717 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

International Journal of Engineering Research in Electrical and Electronic Engineering(IJEREEE)

Monthly Journal for Electrical and Electronic Engineering

ISSN : 2395-2717 (Online)

Model Predictive Control of Three-Phase Four Switch Inverter-Fed Induction Motor Drives

Author : Pala Prasad Reddy M 1 Harinath Reddy K 2 Swathi S 3

Date of Publication :7th August 2016

Abstract: The four-switch three-phase (B4) inverter has the possibility of reducing the inverter cost, and it became very attractive in fault-tolerant control to solve the open/short-circuit faults of the six-switch three-phase (B6) inverter. Its application is limited due to the fluctuation of the two dc-link capacitor voltages which causes the unbalance among the phase currents. Predictive torque control (PTC) scheme is proposed for the B4 inverter-fed induction motor (IM) with the dc-link voltage offset suppression. For precise prediction and control of the torque and stator flux, the voltage vectors of the B4 inverter under the fluctuation of the two dc-link capacitor voltages are derived. By directly controlling the stator flux, the three-phase currents are forced to stay balance. The voltage offset of the two dc-link capacitors is modeled and controlled in the predictive point of view.

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