EPE Association: EPE 1993 - 10 - Lecture Session L4a: CONVERTERS AND SIMULATION

EPE 1993 - 10 - Lecture Session L4a: CONVERTERS AND SIMULATION
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1993 - Conference > EPE 1993 - 10 - Lecture Session L4a: CONVERTERS AND SIMULATION

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   TCAD - A SIMULATION PACKAGE FOR POWER ELECTRONIC SYSTEMS
By R. Szczesny; K. Iwan; M. Ronkowski [View]
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Abstract: The aim of this paper is to present TCAD - a novel power electronic systems simulation package for research (CAD) and teaching (CAE) application. The need for such a simulation tool, different approaches and main inconveniences of using electronic system simulators are discussed. The first part of the paper puts emphasis on the applications of modern simulation methods of converter systems in the TCAD program. The second one describes briefly the features of the main modules of TCAD package, options and basic library elements. The third one presents some examples of simulation of practical converters systems. A given converter circuit diagram can be drawn with the aid of TCAD graphic editor or represented by a text file. As simulation examples a three-phase resonant converter and an induction motor fed by PWM current inverter with tolerance band control are presented. For the single-phase resonant converter the comparison of simulation and experimental results are shown and a good agreement bas been reached. In the conclusions some suggestions concerning the TCAD applications in teaching, research and engineering practice are given.

   THE SELECTION AND APPLICATION OF A 6 MW VARIABLE SPEED CAGE INDUCTION MOTOR DRIVE
By R. H. Lattimer; J. D. A. Crichton [View]
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Abstract: This paper looks at the various choices that faced a pipeline operator in the selection of pumping equipment to increase the throughput of a pipeline from 600,000 barrels/day to over 1,000,000. The pipeline, the Forties crude export pipeline, carries North Sea oil from landfall at Cruden Bay to the refinery at Grangemouth in central Scotland. The analysis discusses the selection of the 6MW variable speed drives and considers their effect on the incoming supply and on the driven equipment.

   AC / AC PWM CONVERTERS WITH HIGH-FREQUENCY INSULATION AND MINIMUM NUMBER OF SWITCHES
By L. Rossetto; P. Tenti; A. Zuccato [View]
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Abstract: An ac/ac PWM converter family is presented, which provides excellent input and output performances and high-frequency insulution with a minimum number of switches. Output performances, in terms of control speed and accuracy, are the same of voltage-fed PWM converters. Input performances meet all modern standards (e.g., IEC 555-2) regarding power factor and current distortion limitation. After an analysis of converter operation, a digital control strategy is presented which fully utilizes the converter capabilities in terms of voltage swing and speed of response and also minimizes the need for sensing devices. Design criteria of power and control sections are given and simulated results are reported, showing the actual converter performances in terms of speed of response, waveform quality and high-frequency transformer utilization.

   CONCURRENT SIMULATION OF DECOUPLED POWER ELECTRONIC CIRCUITS
By K. K. Fung; S. Y. R. Hui; C. Christopoulos [View]
[Download]

Abstract: This paper describes the parallel simulation of a multi-stage power electronic circuit using the transmission line modelling (TLM) method. In this approach, a large stiff circuit can be decoupled into smaller sub-circuits by TLM links. Each sub-circuit is then formulated with a small system matrix and simulated in one program module. The overall simulation is done by running all the program modules in parallel. This parallel simulation allows significant speed improvements over normal sequential simulation, as shown by the results of numerical experimentation.

EPE 1993 - 10 - Lecture Session L4a: CONVERTERS AND SIMULATION
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1993 - Conference > EPE 1993 - 10 - Lecture Session L4a: CONVERTERS AND SIMULATION
	[return to parent folder]

	TCAD - A SIMULATION PACKAGE FOR POWER ELECTRONIC SYSTEMS By R. Szczesny; K. Iwan; M. Ronkowski	[View] [Download]
Abstract: The aim of this paper is to present TCAD - a novel power electronic systems simulation package for research (CAD) and teaching (CAE) application. The need for such a simulation tool, different approaches and main inconveniences of using electronic system simulators are discussed. The first part of the paper puts emphasis on the applications of modern simulation methods of converter systems in the TCAD program. The second one describes briefly the features of the main modules of TCAD package, options and basic library elements. The third one presents some examples of simulation of practical converters systems. A given converter circuit diagram can be drawn with the aid of TCAD graphic editor or represented by a text file. As simulation examples a three-phase resonant converter and an induction motor fed by PWM current inverter with tolerance band control are presented. For the single-phase resonant converter the comparison of simulation and experimental results are shown and a good agreement bas been reached. In the conclusions some suggestions concerning the TCAD applications in teaching, research and engineering practice are given.

	THE SELECTION AND APPLICATION OF A 6 MW VARIABLE SPEED CAGE INDUCTION MOTOR DRIVE By R. H. Lattimer; J. D. A. Crichton	[View] [Download]
Abstract: This paper looks at the various choices that faced a pipeline operator in the selection of pumping equipment to increase the throughput of a pipeline from 600,000 barrels/day to over 1,000,000. The pipeline, the Forties crude export pipeline, carries North Sea oil from landfall at Cruden Bay to the refinery at Grangemouth in central Scotland. The analysis discusses the selection of the 6MW variable speed drives and considers their effect on the incoming supply and on the driven equipment.

	AC / AC PWM CONVERTERS WITH HIGH-FREQUENCY INSULATION AND MINIMUM NUMBER OF SWITCHES By L. Rossetto; P. Tenti; A. Zuccato	[View] [Download]
Abstract: An ac/ac PWM converter family is presented, which provides excellent input and output performances and high-frequency insulution with a minimum number of switches. Output performances, in terms of control speed and accuracy, are the same of voltage-fed PWM converters. Input performances meet all modern standards (e.g., IEC 555-2) regarding power factor and current distortion limitation. After an analysis of converter operation, a digital control strategy is presented which fully utilizes the converter capabilities in terms of voltage swing and speed of response and also minimizes the need for sensing devices. Design criteria of power and control sections are given and simulated results are reported, showing the actual converter performances in terms of speed of response, waveform quality and high-frequency transformer utilization.

	CONCURRENT SIMULATION OF DECOUPLED POWER ELECTRONIC CIRCUITS By K. K. Fung; S. Y. R. Hui; C. Christopoulos	[View] [Download]
Abstract: This paper describes the parallel simulation of a multi-stage power electronic circuit using the transmission line modelling (TLM) method. In this approach, a large stiff circuit can be decoupled into smaller sub-circuits by TLM links. Each sub-circuit is then formulated with a small system matrix and simulated in one program module. The overall simulation is done by running all the program modules in parallel. This parallel simulation allows significant speed improvements over normal sequential simulation, as shown by the results of numerical experimentation.