Iron Loss Minimization Strategy for Predictive Torque Control of Induction Motor

Today’s modern control strategies of an induction motor (IM) drive require a power source with an adjustable output voltage frequency and amplitude. The most commonly used converter topology is a two-level voltage-source inverter (VSI). However, the utilization of a VSI introduces additional voltage...

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Main Authors: Pavel Karlovsky, Ondrej Lipcak, Jan Bauer
Format: Article
Language:English
Published: MDPI AG 2020-03-01
Series:Electronics
Subjects:
Online Access:https://www.mdpi.com/2079-9292/9/4/566
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author Pavel Karlovsky
Ondrej Lipcak
Jan Bauer
author_facet Pavel Karlovsky
Ondrej Lipcak
Jan Bauer
author_sort Pavel Karlovsky
collection DOAJ
description Today’s modern control strategies of an induction motor (IM) drive require a power source with an adjustable output voltage frequency and amplitude. The most commonly used converter topology is a two-level voltage-source inverter (VSI). However, the utilization of a VSI introduces additional voltage and current distortion, which leads to additional power losses in the machine’s magnetic circuit. Both the transistor switching frequency and the type of the inverter control determine the total harmonic distortion (THD) of the motor’s phase currents. In this paper, the influence of the inverter DC-link voltage on the iron losses of an IM controlled by a predictive torque control (PTC) is presented. It is shown that if the IM drive operates below the rated speed, it is possible to modify the PTC algorithm to reduce the additional iron losses caused by the non-harmonic inverter output voltage. The control of the DC-link voltage is achieved by using a silicon-controlled rectifier. Experiments were conducted on a 5.5 kW IM controlled by PTC, and the results are compared against a sinusoidal voltage supply created by a synchronous generator.
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spelling doaj.art-bd456254acc14c9597bb2700cd1124ed2023-11-16T14:32:35ZengMDPI AGElectronics2079-92922020-03-019456610.3390/electronics9040566Iron Loss Minimization Strategy for Predictive Torque Control of Induction MotorPavel Karlovsky0Ondrej Lipcak1Jan Bauer2Department of Electric Drives and Traction, Czech Technical University in Prague, 166 27 Prague, Czech RepublicDepartment of Electric Drives and Traction, Czech Technical University in Prague, 166 27 Prague, Czech RepublicDepartment of Electric Drives and Traction, Czech Technical University in Prague, 166 27 Prague, Czech RepublicToday’s modern control strategies of an induction motor (IM) drive require a power source with an adjustable output voltage frequency and amplitude. The most commonly used converter topology is a two-level voltage-source inverter (VSI). However, the utilization of a VSI introduces additional voltage and current distortion, which leads to additional power losses in the machine’s magnetic circuit. Both the transistor switching frequency and the type of the inverter control determine the total harmonic distortion (THD) of the motor’s phase currents. In this paper, the influence of the inverter DC-link voltage on the iron losses of an IM controlled by a predictive torque control (PTC) is presented. It is shown that if the IM drive operates below the rated speed, it is possible to modify the PTC algorithm to reduce the additional iron losses caused by the non-harmonic inverter output voltage. The control of the DC-link voltage is achieved by using a silicon-controlled rectifier. Experiments were conducted on a 5.5 kW IM controlled by PTC, and the results are compared against a sinusoidal voltage supply created by a synchronous generator.https://www.mdpi.com/2079-9292/9/4/566additional iron lossesinduction motor driveiron loss reductionpredictive torque control
spellingShingle Pavel Karlovsky
Ondrej Lipcak
Jan Bauer
Iron Loss Minimization Strategy for Predictive Torque Control of Induction Motor
Electronics
additional iron losses
induction motor drive
iron loss reduction
predictive torque control
title Iron Loss Minimization Strategy for Predictive Torque Control of Induction Motor
title_full Iron Loss Minimization Strategy for Predictive Torque Control of Induction Motor
title_fullStr Iron Loss Minimization Strategy for Predictive Torque Control of Induction Motor
title_full_unstemmed Iron Loss Minimization Strategy for Predictive Torque Control of Induction Motor
title_short Iron Loss Minimization Strategy for Predictive Torque Control of Induction Motor
title_sort iron loss minimization strategy for predictive torque control of induction motor
topic additional iron losses
induction motor drive
iron loss reduction
predictive torque control
url https://www.mdpi.com/2079-9292/9/4/566
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