Elimination of Dead Time Effects on Common Mode Voltage in an Open-End Winding Induction Motor Drive Under Low Speed Operation Using a Simplified Model Predictive Control

In this article, a simplified model predictive current control (MPCC) for a three-level open-end winding induction motor drive mitigating the dead time effects on common mode voltage (CMV) in the low speed operation of the motor is proposed. The traditional current based objective function is replac...

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Bibliographic Details
Published in:IEEE journal of emerging and selected topics in industrial electronics (Print) 2022-10, Vol.3 (4), p.1195-1204
Main Authors: M., Naga Surya Prakash, Srinivas, Srirama
Format: Article
Language:English
Subjects:
Common mode voltage (CMV)
dead time on common mode voltage
Electric potential
Induction motors
Inverters
Launching pads
Linear programming
Low speed
model predictive control (MPC)
open-end winding induction motor
Predictive control
Shafts
Switches
variable frequency drives
Voltage
Voltage control
Winding
Windings
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Summary:In this article, a simplified model predictive current control (MPCC) for a three-level open-end winding induction motor drive mitigating the dead time effects on common mode voltage (CMV) in the low speed operation of the motor is proposed. The traditional current based objective function is replaced with an equivalent voltage based objective function, and an additional term indicating the nonzero CMV during dead time is added to achieve complete CMV elimination. Further, a sector-based selection of candidate switching states is employed to reduce the computational burden. It is also shown that the constraint on eliminating the dead time effect on CMV heavily deteriorates the performance of the drive at higher speeds and a smooth transition with and without the constraint is also demonstrated. The envisaged MPCC is simulated in MATLAB and is experimentally verified using TMS320F28377S launchpad. The proposed MPCC gives a massive reduction in the computational burden compared to the conventional MPCC without sacrificing the motor drive performance.
ISSN:2687-9735
2687-9743
DOI:10.1109/JESTIE.2022.3151555