EPE Association: EPE 1985 - 04 - Lecture Session 1.04: MODELLING AND SIMULATION

EPE 1985 - 04 - Lecture Session 1.04: MODELLING AND SIMULATION
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1985 - Conference > EPE 1985 - 04 - Lecture Session 1.04: MODELLING AND SIMULATION

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   "CIRCUITS", A SIMPLE PACKAGE FOR TEACHING THE CAD IN POWER ELECTRONICS
By E. Euxibie; J.-L. Coulomb [View]
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Abstract: In this communication, we shall speak about the package "CIRCUITS", which has been developed in an education context in order to introduce the C.A.D. of power electronics circuits. This structured package is highly interacting and very easy to use. That allows a wide utilization and developement by under and post graduate students.

   SIMULATING POWER TRANSISTORS USING SPICE 2
By M. H. Pong; R. D. Jackson [View]
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Abstract: An improved transistor base charge storage algorithm for the quasi-saturation region is proposed. This involves a more appropriate determination of the collector-base capacitance in the quasi-saturation region. A new parameter 'Zero Bias Early Voltage' is required and can easily be obtained from measurements or manufacturer's data sheet. The algorithm is incorporated into the SPICE2 Gummel-Poon model and applied to a power transistor. Simulated results are compared with measured results and satisfactory agreement is obtained.

   FUNCTIONAL DESCRIPTION AND WORKING OUT CONDITIONS OF DIRECT STATIC CONVERTERS
By J.-P. Hautier; G. Manesse [View]
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Abstract: The industrial three-phase line is connected with single-phase load across six bidirectional power switching elements. For this reversible converter, the authors study control strategies by means of functional description in order to build a numerical simulation program with a Petri-nets structuration. Control modes are defined in respect of the load nature specially when undesirable voltage or current harmonic terms are to reduce. Owing to the recent developments of microcomputers, the working out of control system is easy. Several examples of loads (d.c. motor, inductive resistance) illustrate the flexibility of this converter structure which can be considered like an almost universal tool for power conversion.

   THE BOND GRAPH MODEL OF THE ELECTRONIC POWER CONVERTER
By E. Masada; Y. Hiraiwa; K. Hayafune; M. Tamura [View]
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Abstract: In the analysis and the simulation of the operation of a converter circuit, the derivation of its mathematical model is not so simple and routinized. We studied the application of the bond graph representation to the modelling of the electronic power converter, which is widely used to express dynamics of various physical systems. The switching of valves in a converter is described basically with a modulated transformer elements, the modulating gain of which is given as a function of the switching state. The method, integrating this detailed bond graph into a simplified one, is derived and applied to both line-commutated and self-commutated converter. The simplified graph is analyzed or transformed into the differential equation form manually or with use of the computer program. The behaviour of a multiple converter system is easily studied with it. The combined system of converters with electrical machines could be also modelled with this method and the unified expression is obtained. The integrated analysis is useful to design the control scheme of such system.

   MODELING OF DC-TO-DC CONVERTERS WITH TRANSFORMERS : APPLICATION TO THE STUDY AND DESIGN OF TWO-OUTPUT SWITCHED-MODE POWER SUPPLIES
By J. Sebastian; J. Uceda [View]
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Abstract: In this paper, considering the real transformer characteristics a model of a forward converter is discussed. As a consequence of the transformer leakage inductances the effective duty cycle and the dc voltage gain are lower than the ideal values of these parameters. This reduction is proportional to the switching frequency. Considering this phenomenon, a new fully requlated two-output dc-to-dc converter topoloqy is developed. In these new converters the duty cycle and the frequency must be controlled. The theoretical expectations have been verified in a prototype.

EPE 1985 - 04 - Lecture Session 1.04: MODELLING AND SIMULATION
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1985 - Conference > EPE 1985 - 04 - Lecture Session 1.04: MODELLING AND SIMULATION
	[return to parent folder]

	"CIRCUITS", A SIMPLE PACKAGE FOR TEACHING THE CAD IN POWER ELECTRONICS By E. Euxibie; J.-L. Coulomb	[View] [Download]
Abstract: In this communication, we shall speak about the package "CIRCUITS", which has been developed in an education context in order to introduce the C.A.D. of power electronics circuits. This structured package is highly interacting and very easy to use. That allows a wide utilization and developement by under and post graduate students.

	SIMULATING POWER TRANSISTORS USING SPICE 2 By M. H. Pong; R. D. Jackson	[View] [Download]
Abstract: An improved transistor base charge storage algorithm for the quasi-saturation region is proposed. This involves a more appropriate determination of the collector-base capacitance in the quasi-saturation region. A new parameter 'Zero Bias Early Voltage' is required and can easily be obtained from measurements or manufacturer's data sheet. The algorithm is incorporated into the SPICE2 Gummel-Poon model and applied to a power transistor. Simulated results are compared with measured results and satisfactory agreement is obtained.

	FUNCTIONAL DESCRIPTION AND WORKING OUT CONDITIONS OF DIRECT STATIC CONVERTERS By J.-P. Hautier; G. Manesse	[View] [Download]
Abstract: The industrial three-phase line is connected with single-phase load across six bidirectional power switching elements. For this reversible converter, the authors study control strategies by means of functional description in order to build a numerical simulation program with a Petri-nets structuration. Control modes are defined in respect of the load nature specially when undesirable voltage or current harmonic terms are to reduce. Owing to the recent developments of microcomputers, the working out of control system is easy. Several examples of loads (d.c. motor, inductive resistance) illustrate the flexibility of this converter structure which can be considered like an almost universal tool for power conversion.

	THE BOND GRAPH MODEL OF THE ELECTRONIC POWER CONVERTER By E. Masada; Y. Hiraiwa; K. Hayafune; M. Tamura	[View] [Download]
Abstract: In the analysis and the simulation of the operation of a converter circuit, the derivation of its mathematical model is not so simple and routinized. We studied the application of the bond graph representation to the modelling of the electronic power converter, which is widely used to express dynamics of various physical systems. The switching of valves in a converter is described basically with a modulated transformer elements, the modulating gain of which is given as a function of the switching state. The method, integrating this detailed bond graph into a simplified one, is derived and applied to both line-commutated and self-commutated converter. The simplified graph is analyzed or transformed into the differential equation form manually or with use of the computer program. The behaviour of a multiple converter system is easily studied with it. The combined system of converters with electrical machines could be also modelled with this method and the unified expression is obtained. The integrated analysis is useful to design the control scheme of such system.

	MODELING OF DC-TO-DC CONVERTERS WITH TRANSFORMERS : APPLICATION TO THE STUDY AND DESIGN OF TWO-OUTPUT SWITCHED-MODE POWER SUPPLIES By J. Sebastian; J. Uceda	[View] [Download]
Abstract: In this paper, considering the real transformer characteristics a model of a forward converter is discussed. As a consequence of the transformer leakage inductances the effective duty cycle and the dc voltage gain are lower than the ideal values of these parameters. This reduction is proportional to the switching frequency. Considering this phenomenon, a new fully requlated two-output dc-to-dc converter topoloqy is developed. In these new converters the duty cycle and the frequency must be controlled. The theoretical expectations have been verified in a prototype.