Journal ArticleDOI
Fault analysis of a PM brushless DC Motor using finite element method
Min Dai,Ali Keyhani,T. Sebastian +2 more
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TLDR
In this article, a finite element model was used to perform simulations under three types of fault conditions, single-phase open circuit fault, phase-to-phase terminal short-circuit, and internal turn-toturn shortcircuit have been studied.Abstract:
Three-phase trapezoidal back-EMF permanent magnet (PM) machines are used in many applications where the reliability and fault tolerance are important requirements. Knowledge of the machine transient processes under various fault conditions is the key issue in evaluating the impact of machine fault on the entire electromechanical system. The machine electrical and mechanical quantities whose transient behaviors are of importance under fault conditions include the voltages and currents of the coils and phases, the electromagnetic torque, and the rotor speed. Experimental test based on true machines for such a purpose is impractical for its high cost and difficulty to make. Computer simulation based on the finite element method has shown its effectiveness in fault study in this paper. Before the finite element model was used to perform simulations under fault conditions, it was validated by test data under normal conditions. Three types of fault conditions-single-phase open circuit fault, phase-to-phase terminal short-circuit, and internal turn-to-turn short-circuit have been studied.read more
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Journal ArticleDOI
Recent Advances in Modeling and Online Detection of Stator Interturn Faults in Electrical Motors
TL;DR: A review of existing techniques available for online stator interturn fault detection and diagnosis (FDD) in electrical machines, with special attention to short-circuit-fault diagnosis in permanent-magnet machines, which are fast replacing traditional machines in a wide variety of applications.
Journal ArticleDOI
Fault-Tolerant Control of Five-Phase Permanent-Magnet Motors With Trapezoidal Back EMF
Suman Dwari,Leila Parsa +1 more
TL;DR: Fault-tolerant control techniques for five-phase permanent-magnet motors with trapezoidal back electromotive forces under various open-circuit conditions are presented and solutions are derived to increase the average output torque while reducing the torque pulsations and satisfying the zero-neutral-current constraint.
Journal ArticleDOI
An Optimal Control Technique for Multiphase PM Machines Under Open-Circuit Faults
Suman Dwari,Leila Parsa +1 more
TL;DR: An optimal control technique for n-phase permanent-magnet (PM) machines under various open circuit faults is presented and a constraint is incorporated in the derivation of the control technique.
Journal ArticleDOI
Detection of Demagnetization Faults in Permanent-Magnet Synchronous Motors Under Nonstationary Conditions
TL;DR: In this article, the effect of demagnetization on the current spectrum of PMSMs with the aim of developing an effective condition-monitoring scheme was examined, and a reduced set of easy-to-compute discriminating features for both CWT and DWT methods has been defined.
Journal ArticleDOI
Feature Extraction for Short-Circuit Fault Detection in Permanent-Magnet Synchronous Motors Using Stator-Current Monitoring
B Mahdi Ebrahimi,Jawad Faiz +1 more
TL;DR: In this article, a frequency pattern and a competent criterion are introduced for short-circuit-fault recognition in permanent-magnet synchronous motors (PMSMs), where the frequency pattern is extracted from the monitored stator current analytically and the amplitude of sideband components at these frequencies is introduced as a proper criterion to determine the number of shortcircuited turns.
References
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Book
Permanent magnet motor technology : design and applications
Jacek F. Gieras,Mitchell Wing +1 more
TL;DR: In this article, the authors present an overview of the history of permanent magnet motors and their applications in automotive and industrial applications, including the development and performance of brushless motors and motors with disk rotors.
BookDOI
Finite element analysis of electrical machines
TL;DR: The aim of this chapter is to clarify the role of magnetism in the design of Induction Machines and to provide a procedure for integrating magnetism into the model of the motor.
Book
Basic Heat and Mass Transfer
TL;DR: In this article, the authors present an overview of the properties of elementary heat transfer, including the following: 1. Introduction and Elementary Heat Transfer 2. Steady One-Dimensional Heat Conduction 3. Multidimensional and Unsteady Conduction.