EPE Association: EPE 1997 – 40: Dialogue Session DS5o: MODELLING AND SIMULATION

EPE 1997 – 40: Dialogue Session DS5o: MODELLING AND SIMULATION
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1997 - Conference > EPE 1997 – 40: Dialogue Session DS5o: MODELLING AND SIMULATION

   [return to parent folder]

   AUTOMATIC BUILDING OF CHANGEABLE TOPOLOGICAL MODEL OF STATIC CONVERTERS FOR THE ELECTRICAL DRIVE SIMULATION
By L. Gerbaud, N. Retiere, A. Bolopion [View]
[Download]

Abstract: This paper deals with the automatic synthesis of models with changeable topology of static converters for the simulation of controlled electrical drives: with or without defect operating. A generic approach is presented to solve the building problems of such models. A model generator, called GENTIANE-MEIGE, that wholly automates this approach, is proposed. It is performed by the module GENTIANE-ARMOISE that permits to gather several models of static converters with electrical machine models, in a same global model. Simulation results are presented with the simulation motor GENTIANE-ORO developed in our laboratory.

   HIGH FREQUENCY LUMPED PARAMETER MODEL FOR AC MOTOR WINDINGS
By G. Grandi; D. Casadei; A. Massarini [View]
[Download]

Abstract: The paper describes a HF equivalent circuit for the stator winding of three-phase AC motors, valid in a wide frequency range. The model fitting is based on winding complex impedance measurements. Both the phase-to-phase and the phase-to-ground impedances are considered. The proposed model can be utilized in theoretical and numerical HF analysis of inverter-fed AC motors. In this case, the equivalent circuit allows to predict both differential- and common-mode conducted EMI. Furthermore, also transient effects can be predicted when the analysis is performed in the time domain. The numerical results, obtained by means of PSpice, are compared with the corresponding experimental tests in both frequency and time domains.

   MATHEMATICAL MODEL OF INVERTER-FED INDUCTION MOTOR DRIVE FOR ELECTRICAL VEHICLE
By Tadeusz Stefanski [View]
[Download]

Abstract: The mathematical model of the inverter-fed induction motor drive system and the method of the offline identification of its parameters are presented. The numerical method of static optimization has been applied in parametric identification. Using experimental investigations, the influence of the excitation signals and the conditions of supply and load on identified system parameters are analysed. Changes in the motor parameters are presented in the form of polynomial functions of the measurable motor quantities. An approximation of changes in motor parameters of the motor mathematical model with the use of polynomial functions has enabled the adaptive control with open-loop adaptation on the basis of an off-line parameter identification. The experimental investigations were carried out on a laboratory model of inverter-fed induction motor drive.

   ANALYSIS OF TRANSIENT BEHAVIOR OF A SYNCHRONOUS GENERATOR FOR PULSED POWER SUPPLY BASED ON THE FINITE ELEMENT METHOD
By R. De Weerdt; E. Tuinman [View]
[Download]

Abstract: The simulation of a Stand-alone Synchronous Generator for Pulsed Power Supply is described. The transient behavior is simulated using a coupled winding model. The model parameters are calculated using 2d finite elements. Saturation is included by describing the inductances in the model as functions of the flux linked with the corresponding phase. The simulations discuss the influence of saturation on the short-circuit behavior and on the generator load angle. Simulations with and without inclusion of the damper windings are discussed.

   NONLINEAR MODELS OF ELECTRICAL MACHINES FOR MOTION CONTROL SYSTEM SIMULATIONS
By M. Ronkowski; R. Szczesny; J. Nieznanski [View]
[Download]

Abstract: This paper presents the models of electrical machines implemented in TCad-a simulation environment for high-performance analysis of power electronic and motion control systems- and demonstrates their use for comprehensive analyses of normal and fault operation of motion control system. The first part of the paper summarizes the desired characteristics of these models and gives basic modelling concepts (including the network topology of the models). The second part presents the approach to modelling magnetic saturation and evaluating model parameters. In the third part a representative analysis example is presented of faults occurring in a sophisticated induction motor drive system. Such analyses are useful in determining how various kinds of fault can be identified through available waveform data; this knowledge, in turn, can be utilized in real time diagnostics.

   A SlMPLE ANALYTICAL MODEL FOR THE CALCULATION OF HARMONICS DUE TO SLOTTING IN THE FLUX DENSITY WAVEFORM OF AN ELECTRICAL MACHINE
By G. HOUDOUIN; G. BARAKAT; T. DERREY; E. DESTOBBELEER [View]
[Download]

Abstract: A review of analytical methods used in the slot harmonics calculation is presented and discussed. As these methods lay on multiple restrictive assumptions, a new simple analytical finite elements based slot harmonics model is proposed, including saturation effects and actual geometry. The model is finally validated by comparison with a finite elements simulation of the air-gap flux density in an actual induction machine.

   TRANSIENT MODEL OF A SQUIRREL CAGE INDUCTION MACHINE INCLUDING THE SKIN EFFECT USING ROTOR-FIXED REFERENCE FRAME
By M. Németh-Csóka [View]
[Download]

Abstract: To be able to decide if the skin effect is negligible or not by a high-dynamic induction motor-drive it is important to know the range of the available rotor frequency. Using the supposed structure it is possible to model the machine and calculate the model-error in the practical range of the drive. A transient squirrel cage induction machine model is described using rotor-fixed co-ordinate system. The effect of deep bars are considered. An analytical calculation of the necessary parameters is given. The output of the relative simple model and the values of the machine match each other very good in the practical frequency range. The error of the impedance of the model is limited in the magnitude and in the phase, too.

   SIMULATION MODEL OF THE INDUCTION MOTOR WITH NON-LINEAR ROTOR
By E. A. Lomonova; S. I. Volsky; J. B. Klaassens; A. A. Tulupnikov [View]
[Download]

Abstract: There .is a great deal of interest in the application of induction motors as high performance variable drivers. The purpose of this article is to investigate the dynamic processes in the new induction motor with a non-linear rotor which contains the active and non-controlled semiconductor elements. Dynamic simulation model is based on the phase-coordinate representation of the electromagnetic and electromechanical processes and is given in the form of PSpice circuit. The applied principle of the electromechanical analogies can be further carried over to simulation of the other types of the electrical machines. Applicability of the models is verified by simulation and the samples of results, for a number of operating conditions, is included. It is shown that the desired dynamic properties of the non-loaded and loaded induction motor can be achieved by the means of varying the rotor resistance parameters.

EPE 1997 – 40: Dialogue Session DS5o: MODELLING AND SIMULATION
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1997 - Conference > EPE 1997 – 40: Dialogue Session DS5o: MODELLING AND SIMULATION
	[return to parent folder]

	AUTOMATIC BUILDING OF CHANGEABLE TOPOLOGICAL MODEL OF STATIC CONVERTERS FOR THE ELECTRICAL DRIVE SIMULATION By L. Gerbaud, N. Retiere, A. Bolopion	[View] [Download]
Abstract: This paper deals with the automatic synthesis of models with changeable topology of static converters for the simulation of controlled electrical drives: with or without defect operating. A generic approach is presented to solve the building problems of such models. A model generator, called GENTIANE-MEIGE, that wholly automates this approach, is proposed. It is performed by the module GENTIANE-ARMOISE that permits to gather several models of static converters with electrical machine models, in a same global model. Simulation results are presented with the simulation motor GENTIANE-ORO developed in our laboratory.

	HIGH FREQUENCY LUMPED PARAMETER MODEL FOR AC MOTOR WINDINGS By G. Grandi; D. Casadei; A. Massarini	[View] [Download]
Abstract: The paper describes a HF equivalent circuit for the stator winding of three-phase AC motors, valid in a wide frequency range. The model fitting is based on winding complex impedance measurements. Both the phase-to-phase and the phase-to-ground impedances are considered. The proposed model can be utilized in theoretical and numerical HF analysis of inverter-fed AC motors. In this case, the equivalent circuit allows to predict both differential- and common-mode conducted EMI. Furthermore, also transient effects can be predicted when the analysis is performed in the time domain. The numerical results, obtained by means of PSpice, are compared with the corresponding experimental tests in both frequency and time domains.

	MATHEMATICAL MODEL OF INVERTER-FED INDUCTION MOTOR DRIVE FOR ELECTRICAL VEHICLE By Tadeusz Stefanski	[View] [Download]
Abstract: The mathematical model of the inverter-fed induction motor drive system and the method of the offline identification of its parameters are presented. The numerical method of static optimization has been applied in parametric identification. Using experimental investigations, the influence of the excitation signals and the conditions of supply and load on identified system parameters are analysed. Changes in the motor parameters are presented in the form of polynomial functions of the measurable motor quantities. An approximation of changes in motor parameters of the motor mathematical model with the use of polynomial functions has enabled the adaptive control with open-loop adaptation on the basis of an off-line parameter identification. The experimental investigations were carried out on a laboratory model of inverter-fed induction motor drive.

	ANALYSIS OF TRANSIENT BEHAVIOR OF A SYNCHRONOUS GENERATOR FOR PULSED POWER SUPPLY BASED ON THE FINITE ELEMENT METHOD By R. De Weerdt; E. Tuinman	[View] [Download]
Abstract: The simulation of a Stand-alone Synchronous Generator for Pulsed Power Supply is described. The transient behavior is simulated using a coupled winding model. The model parameters are calculated using 2d finite elements. Saturation is included by describing the inductances in the model as functions of the flux linked with the corresponding phase. The simulations discuss the influence of saturation on the short-circuit behavior and on the generator load angle. Simulations with and without inclusion of the damper windings are discussed.

	NONLINEAR MODELS OF ELECTRICAL MACHINES FOR MOTION CONTROL SYSTEM SIMULATIONS By M. Ronkowski; R. Szczesny; J. Nieznanski	[View] [Download]
Abstract: This paper presents the models of electrical machines implemented in TCad-a simulation environment for high-performance analysis of power electronic and motion control systems- and demonstrates their use for comprehensive analyses of normal and fault operation of motion control system. The first part of the paper summarizes the desired characteristics of these models and gives basic modelling concepts (including the network topology of the models). The second part presents the approach to modelling magnetic saturation and evaluating model parameters. In the third part a representative analysis example is presented of faults occurring in a sophisticated induction motor drive system. Such analyses are useful in determining how various kinds of fault can be identified through available waveform data; this knowledge, in turn, can be utilized in real time diagnostics.

	A SlMPLE ANALYTICAL MODEL FOR THE CALCULATION OF HARMONICS DUE TO SLOTTING IN THE FLUX DENSITY WAVEFORM OF AN ELECTRICAL MACHINE By G. HOUDOUIN; G. BARAKAT; T. DERREY; E. DESTOBBELEER	[View] [Download]
Abstract: A review of analytical methods used in the slot harmonics calculation is presented and discussed. As these methods lay on multiple restrictive assumptions, a new simple analytical finite elements based slot harmonics model is proposed, including saturation effects and actual geometry. The model is finally validated by comparison with a finite elements simulation of the air-gap flux density in an actual induction machine.

	TRANSIENT MODEL OF A SQUIRREL CAGE INDUCTION MACHINE INCLUDING THE SKIN EFFECT USING ROTOR-FIXED REFERENCE FRAME By M. Németh-Csóka	[View] [Download]
Abstract: To be able to decide if the skin effect is negligible or not by a high-dynamic induction motor-drive it is important to know the range of the available rotor frequency. Using the supposed structure it is possible to model the machine and calculate the model-error in the practical range of the drive. A transient squirrel cage induction machine model is described using rotor-fixed co-ordinate system. The effect of deep bars are considered. An analytical calculation of the necessary parameters is given. The output of the relative simple model and the values of the machine match each other very good in the practical frequency range. The error of the impedance of the model is limited in the magnitude and in the phase, too.

	SIMULATION MODEL OF THE INDUCTION MOTOR WITH NON-LINEAR ROTOR By E. A. Lomonova; S. I. Volsky; J. B. Klaassens; A. A. Tulupnikov	[View] [Download]
Abstract: There .is a great deal of interest in the application of induction motors as high performance variable drivers. The purpose of this article is to investigate the dynamic processes in the new induction motor with a non-linear rotor which contains the active and non-controlled semiconductor elements. Dynamic simulation model is based on the phase-coordinate representation of the electromagnetic and electromechanical processes and is given in the form of PSpice circuit. The applied principle of the electromechanical analogies can be further carried over to simulation of the other types of the electrical machines. Applicability of the models is verified by simulation and the samples of results, for a number of operating conditions, is included. It is shown that the desired dynamic properties of the non-loaded and loaded induction motor can be achieved by the means of varying the rotor resistance parameters.