EPE Association: EPE-PEMC 2002: Special Session: Field Computations in Electrical Machines Design and Analysis

EPE-PEMC 2002: Special Session: Field Computations in Electrical Machines Design and Analysis
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2002 - Conference > EPE-PEMC 2002: Special Session: Field Computations in Electrical Machines Design and Analysis

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   3D Eddy Current Calculations in Electromechanical Energy Converters
By A. Demenko; J. K. Sykulski [View]
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Abstract: The paper discusses the finite element method applied to eddy current problems in electromagnetic converters such as transformers, electrical machines and actuators. Both scalar and vector potential formulations are analysed. The finite element equations are expressed using the notion of equivalent magnetic and electric networks coupled via sources. The network models of multiply connected conductors are presented. A squirrel-cage winding and a multi-turn winding composed of solid conductors are also considered.

   Finite Element Aided Design of Electrical Machines: Achievements and Challenges
By J. Sykulski [View]
[Download]

Abstract: The paper summarises the state of the art in the use of finite element (FE) modelling for design and optimisation of electrical machines and discusses some of the remaining challenges. Computational Electromagnetics (CEM) is now a mature tool commonly used in design offices for performance prediction and as an aid to design. However, more developments are needed in several areas to deal with issues such as coupled problems, optimisation, material modelling and adaptive meshing.

   Finite-Element Models for Electrical Machines
By T. Busch; G. Henneberger [View]
[Download]

Abstract: After a brief introduction, several examples of the use of Finite-Element models for Electrical Machines are described by means of research works carried out at the Department of Electrical Machines (IEM), Aachen Institute of Technology (RWTH), Germany. Static torque calculations with large Finite-Element models are as well presented as transient calculations of eddy currents [1]. Another topic is a calculation procedure to determine the mechanical and acoustic behaviour of electrical machines [2]. Finally a coupled simulation to calculate the dynamic behaviour is outlined, where two-dimensional Finite-Element calculations are coupled with physical machine models.

   Specialized Conductor Models for Finite Element Eddy Current Simulation
By T. Weiland; H. De Gersem; K. Hameyer [View]
[Download]

Abstract: Transformer and machine windings with complicated shapes and winding schemes can not be considered in full detail within an overall machine model. In this paper, besides the standard solid and stranded conductor models, specialized conductor models are developed for foil and machine windings which may exhibit particular skin and proximity effects. The conductor models globally behave as the true windings without requiring a full geometrical discretization or detailed winding scheme. They refine adaptively according to local error estimates in the global model, offer smaller computational times and are more reliable than if solid and stranded conductor models would be applied. The conductor models appear as magnetically coupled elements in an external circuit model. The field-circuit coupled model is conveniently represented by a coupled system of equations.

EPE-PEMC 2002: Special Session: Field Computations in Electrical Machines Design and Analysis
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2002 - Conference > EPE-PEMC 2002: Special Session: Field Computations in Electrical Machines Design and Analysis
	[return to parent folder]

	3D Eddy Current Calculations in Electromechanical Energy Converters By A. Demenko; J. K. Sykulski	[View] [Download]
Abstract: The paper discusses the finite element method applied to eddy current problems in electromagnetic converters such as transformers, electrical machines and actuators. Both scalar and vector potential formulations are analysed. The finite element equations are expressed using the notion of equivalent magnetic and electric networks coupled via sources. The network models of multiply connected conductors are presented. A squirrel-cage winding and a multi-turn winding composed of solid conductors are also considered.

	Finite Element Aided Design of Electrical Machines: Achievements and Challenges By J. Sykulski	[View] [Download]
Abstract: The paper summarises the state of the art in the use of finite element (FE) modelling for design and optimisation of electrical machines and discusses some of the remaining challenges. Computational Electromagnetics (CEM) is now a mature tool commonly used in design offices for performance prediction and as an aid to design. However, more developments are needed in several areas to deal with issues such as coupled problems, optimisation, material modelling and adaptive meshing.

	Finite-Element Models for Electrical Machines By T. Busch; G. Henneberger	[View] [Download]
Abstract: After a brief introduction, several examples of the use of Finite-Element models for Electrical Machines are described by means of research works carried out at the Department of Electrical Machines (IEM), Aachen Institute of Technology (RWTH), Germany. Static torque calculations with large Finite-Element models are as well presented as transient calculations of eddy currents [1]. Another topic is a calculation procedure to determine the mechanical and acoustic behaviour of electrical machines [2]. Finally a coupled simulation to calculate the dynamic behaviour is outlined, where two-dimensional Finite-Element calculations are coupled with physical machine models.

	Specialized Conductor Models for Finite Element Eddy Current Simulation By T. Weiland; H. De Gersem; K. Hameyer	[View] [Download]
Abstract: Transformer and machine windings with complicated shapes and winding schemes can not be considered in full detail within an overall machine model. In this paper, besides the standard solid and stranded conductor models, specialized conductor models are developed for foil and machine windings which may exhibit particular skin and proximity effects. The conductor models globally behave as the true windings without requiring a full geometrical discretization or detailed winding scheme. They refine adaptively according to local error estimates in the global model, offer smaller computational times and are more reliable than if solid and stranded conductor models would be applied. The conductor models appear as magnetically coupled elements in an external circuit model. The field-circuit coupled model is conveniently represented by a coupled system of equations.