EPE Association: EPE 2007 - Subtopic 10-4 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor II

EPE 2007 - Subtopic 10-4 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor II
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 10: 'Electrical machines' > EPE 2007 - Subtopic 10-4 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor II

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   A NEW STRUCTURE OF A SWITCHING FLUX SYNCHRONOUS POLYPHASED MACHINE WITH HYBRID EXCITATION
By GABSI Mohamed; HOANG Emmanuel; LECRIVAIN Michel [View]
[Download]

Abstract: The aim of this paper is to present the structure of a new flux switching synchronous machine with hybrid excitation. This machine uses the flux switching principle where all the active parts are located on the stator. The rotor is only a salient passive rotor and can be robust and made with a low cost technology. This new machine can be supplied with electricity by means of a traditional three phase voltage converter or can be associated with a diode rectifier. The hybrid excitation is an association of permanent magnets and a wound exciter.

   Modelling of Permanent Magnet Synchronous Machines for Simulations of Transient Phenomena
By PONICK Bernd; DEMPEWOLF Kay-Horst [View]
[Download]

Abstract: This paper deals with the modelling of permanent magnet synchronous machines for the simulation of transient phenomena. The differential equations are given which are used to describe the behaviour of such machines. This system of differential equations is based on a d-q-model and considers eddy currents in permanent magnets and in solid parts of the rotor which are represented by closed circuits. Most of the machine parameters required to apply the equations are identified by a FEM simulation of the machine. The approach of this identification is described. It allows to determine the effect of different rotor designs (e.g. solid or laminated rotor yoke, use of a copper shield) on the dynamic characteristics and the generated losses. In order to verify the model, its predictions for no load and starting condition are checked by measurements taken on a test motor.

   SHORT-CIRCUIT FAULTS IN DISTRIBUTED AND CONCENTRATED WINDINGS OF PM SYNCHRONOUS MOTORS
By CHEVAILLER Samuel; FENG Lin; BINDER Andreas [View]
[Download]

Abstract: For investigation of coil currents, torque and speed pulsation at coil short-circuit faults, an "independent coil" model is set up and presented. The model is based on the calculation of the self and mutual inductances and is implemented in MATLAB/SIMULINK (Matrix operation). Both distributed and concentrated windings are simulated at short circuit faults of different coils. For an x-by-wire application different pole numbers and winding configurations are investigated for the lowest torque pulsation at fault-condition. Moreover, a possible solution for avoiding a disturbing pulsating torque at short-circuit fault is discussed. This method comprises the short-circuit of the coils (or a multiple) constituting the "basic winding scheme".

EPE 2007 - Subtopic 10-4 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor II
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 10: 'Electrical machines' > EPE 2007 - Subtopic 10-4 - LS: Synchronous, permanent magnet synchronous and brushless d.c. motor II
	[return to parent folder]

	A NEW STRUCTURE OF A SWITCHING FLUX SYNCHRONOUS POLYPHASED MACHINE WITH HYBRID EXCITATION By GABSI Mohamed; HOANG Emmanuel; LECRIVAIN Michel	[View] [Download]
Abstract: The aim of this paper is to present the structure of a new flux switching synchronous machine with hybrid excitation. This machine uses the flux switching principle where all the active parts are located on the stator. The rotor is only a salient passive rotor and can be robust and made with a low cost technology. This new machine can be supplied with electricity by means of a traditional three phase voltage converter or can be associated with a diode rectifier. The hybrid excitation is an association of permanent magnets and a wound exciter.

	Modelling of Permanent Magnet Synchronous Machines for Simulations of Transient Phenomena By PONICK Bernd; DEMPEWOLF Kay-Horst	[View] [Download]
Abstract: This paper deals with the modelling of permanent magnet synchronous machines for the simulation of transient phenomena. The differential equations are given which are used to describe the behaviour of such machines. This system of differential equations is based on a d-q-model and considers eddy currents in permanent magnets and in solid parts of the rotor which are represented by closed circuits. Most of the machine parameters required to apply the equations are identified by a FEM simulation of the machine. The approach of this identification is described. It allows to determine the effect of different rotor designs (e.g. solid or laminated rotor yoke, use of a copper shield) on the dynamic characteristics and the generated losses. In order to verify the model, its predictions for no load and starting condition are checked by measurements taken on a test motor.

	SHORT-CIRCUIT FAULTS IN DISTRIBUTED AND CONCENTRATED WINDINGS OF PM SYNCHRONOUS MOTORS By CHEVAILLER Samuel; FENG Lin; BINDER Andreas	[View] [Download]
Abstract: For investigation of coil currents, torque and speed pulsation at coil short-circuit faults, an "independent coil" model is set up and presented. The model is based on the calculation of the self and mutual inductances and is implemented in MATLAB/SIMULINK (Matrix operation). Both distributed and concentrated windings are simulated at short circuit faults of different coils. For an x-by-wire application different pole numbers and winding configurations are investigated for the lowest torque pulsation at fault-condition. Moreover, a possible solution for avoiding a disturbing pulsating torque at short-circuit fault is discussed. This method comprises the short-circuit of the coils (or a multiple) constituting the "basic winding scheme".