Search Results - "Induction motors."

This study aimed to monitor the operating state of an induction motor, a type of electromagnetic motor, using a highly sensitive magnetic sensor, which could be applied for anomaly detection in the future. Monitoring the health of electromagnetic motors is very important to minimize losses due to fa...

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Induction motors (IMs) have a crucial and significant role in various industrial sectors. With the prolonged operation of IMs, faults tend to develop that can be classified into five major categories, i.e., broken rotor bars, stator winding faults, air-gap eccentricity, bearing faults, and load torq...

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The estimation of electrical parameters in three-phase induction motors is necessary for tasks such as performance analysis, control design, and predictive maintenance. Nonetheless, manufacturers typically provide limited electrical data, and existing methods often require invasive testing or additi...

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Abstract - Use of efficient signal processing tools (SPTs) to extract proper indices for fault detection in induction motors (IMs) is the essential part of any fault recognition procedure. The Part1 of the two parts paper focuses on Fourier-based techniques including fast Fourier transform and short...

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The aim of this article was to analyze the profitability of using a multi-motor electric drive instead of a single-motor electric drive in a city vehicle to ensure the reduction of the electrical energy losses. To achieve the goal a mathematical model was used to calculate the energy losses in the s...

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The analysis of operation of symmetrical six-phase (dual three-phase) ac drive system (which is a promising solution for the medium-power and high-power applications) with synchronized pulse-width modulation (PWM) during overmodulation has been performed. The induction machine of this system topolog...

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Split-phase symmetrical motor drive on the base of two voltage source inverters, controlled by algorithms of synchronized pulse width modulation (PWM), has been investigated. Simulation results are presented for dual three-phase power conversion systems with continuous, discontinuous and combined ve...

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The aim of research is to develop a thermal model of the output converter of an electric locomotive with vector control, taking into account the operating modes of the electric locomotive. The aim was achieved by using energy losses at the moments of switching functions that describe the nature of t...

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Purpose of this work is in the development and modification of control scheme and of basic algorithms of discontinuous space-vector modulation for synchronous and balanced regulation of multi-inverter topology of six-phase open-end winding installation with four insulated dc sources. This purpose ha...

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This article presents a novel fault-tolerant control (FTC) strategy for three-phase induction motor drives designed to maintain adequate operation during a fault occurring on either the electrical machine or the power converter sides. The proposed FTC ensures uninterrupted operation through software...

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Simulation data of the digital part of the described microprocessor are presented.

Abstract: This paper presents results of investigation of dual inverter-fed open-end winding induction motor electric drive systems, controlled in accordance with the algorithms of novel methodology of synchronized vector modulation. Simulations give the behavior of the proposed techniques of synchr...

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This study presents a detailed investigation of the torque-speed characteristics of a WEG single-phase squirrel-cage induction motor (SPSCIM) of (1/2 hp), 110/220 V at 60 Hz. The primary objective was to derive the motor’s equivalent circuit and validate its performance curves through finite element...

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Some questions of the thermal process characteristics in the induction motor under its feeding with the asymmetrical voltage system are considered. The results of the heating dynamics computing are presented. The occurrence of the hazardous thermal performance is discussed.

Computer simulation issues of the asynchronous liquid - clutch drive with constant and changing fill types are cons idered.

A fault diagnostics system of three-phase induction motors was implemented. The implemented system was based on acoustic signals of three-phase induction motors. A feature extraction step was performed using SMOFS-20-EXPANDED (shortened method of frequencies selection-20-Expanded). A classification...

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The aim of the work was parametric synthesis of vector sensorless (i. e. without speed sensor) control of an electric drive with an induction motor. The structure of the system is based on the application of an adaptive model for estimating the rotor flow coupling vector and velocity. The speed is e...

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Traditionally, diagnosis of bearing faults involves analyzing the frequency spectra of monitored signals, like vibration and stator current, using various signal processing techniques. However, signal-based methods for fault diagnosis often produce false alarms due to changes in load and voltage imb...

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When induction motors are powered by solid-state voltage and frequency converters, the torque on the shaft is created by the first harmonic of the current, and the higher harmonics of the cur-rent only create losses in the stator winding. The purpose of the work is to develop a methodolo-gy for dete...

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