# COMPEL 2000. 7th Workshop on Computers in Power Electronics. Proceedings (Cat. No.00TH8535)

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• ### COMPEL 2000. 7th Workshop on Computers in Power Electronics. Proceedings (Cat. No.00TH8535)

Publication Year: 2000
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• ### A synergetic approach to the modeling of power electronic systems

Publication Year: 2000, Page(s):259 - 262
Cited by:  Papers (4)
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The authors introduce a synergetic approach, which brings great improvements in computer modeling and simulation of power electronic systems. Essentially, the process involves synthesis of control laws that result in collapse of (at least two) initially high-dimension models into a single model of lower-dimension. The technique requires creation of state space attractors, artificial manifolds, tha... View full abstract»

• ### Author index

Publication Year: 2000, Page(s): A
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• ### Optimizing a discrete switching pattern using two simulated annealing algorithms

Publication Year: 2000, Page(s):129 - 133
Cited by:  Papers (2)
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In many applications, the output waveform of an inverter must be sinusoidal. However, the output also contains low and high order harmonics due to switching. As an alternative to analog PWM, a digital basis can be established for the switching sequence. The desired sinusoidal period is divided into N intervals, each taking the value +1' or -1' to form a bit-string. In this paper, simulated annea... View full abstract»

• ### Digital PWM controller and current estimator for a low-power switching converter

Publication Year: 2000, Page(s):123 - 128
Cited by:  Papers (49)  |  Patents (4)
| | PDF (420 KB)

This paper describes design and implementation of a digital controller for an experimental low-power converter in a battery-powered system with power management. Multiple operating modes are used to maintain high efficiency over wide ranges of input voltages and loads. A current estimation technique to perform load-dependent mode switching is proposed and tested. A digital PID regulator design exa... View full abstract»

• ### Computer aided high frequency transformer design using an optimized methodology

Publication Year: 2000, Page(s):277 - 280
Cited by:  Papers (2)
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A new methodology for designing transformers has previously been developed. This model takes account of switching type waveforms encountered in switching mode power supplies, inclusive of high frequency skin and proximity effects. The selection of the transformer core has been optimized to minimize the core and winding losses. This paper demonstrates a computer aided design package written for Win... View full abstract»

• ### A simple PSpice high-frequency dynamic model for discharge lamps

Publication Year: 2000, Page(s):293 - 297
Cited by:  Papers (2)
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In this paper, a very simple PSpice model which includes the high-frequency dynamic behavior of discharge lamps is proposed. The model is based on the assumption that the lamp behaves as a constant voltage source at stable operation. This assumption simplifies the lamp modeling and contrary to other models no extra laboratory measurements are needed, thus the only input data required are nominal l... View full abstract»

• ### Simulation of anisotropic breakdown in 4H-SiC diodes

Publication Year: 2000, Page(s):118 - 120
Cited by:  Papers (1)
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The breakdown characteristics of two-dimensional 4H-SiC diode structures have been studied using an anisotropic drift-diffusion model. The degree of anisotropy was estimated from recent full band Monte Carlo simulations. Identical diode structures have previously been used in the literature to measure the hole impact ionization coefficients of 4H-SiC. The reported measurements from different resea... View full abstract»

• ### Behavior analysis of the IGBT in ZCS commutation based in a soft modeling concept

Publication Year: 2000, Page(s):97 - 101
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This work presents a study of the insulated gate bipolar transistor (IGBT) behavior in ZC soft switching mode. This analysis is based on a soft modeling concept of power electronics devices, which gives important knowledge of the semiconductor, normally not accessed by experimental means and addressed to the circuit users. For example the carrier concentration at emitter end of the base, the insta... View full abstract»

• ### A study of modeling and simulation for soft-switched bi-directional DC-DC converters

Publication Year: 2000, Page(s):68 - 73
Cited by:  Papers (1)
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In this paper, an extended averaged model is developed for a soft-switched bi-directional DC-DC converter for high-power applications. The proposed technique can be applied to any DC-DC converter with a high-frequency isolation transformer. Simulation results of Matlab/Simulink using the proposed average model are compared to those of detailed circuit simulation to verify the validity of this tech... View full abstract»

• ### A virtual test bed for power electronic circuits and electric drive systems

Publication Year: 2000, Page(s):46 - 51
Cited by:  Papers (6)
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Applications of the virtual test bed (VTB) to a power electronic circuit and an electric drive system are described. The VTB is a software environment that has been developed for design, analysis and virtual prototyping of large-scale multi-technical systems. It has the capability of integrating models, which have been created in a variety of languages such as SPICE, ACSL and SABER, into one simul... View full abstract»

• ### Simulation of a 12-pulse cycloconverter with the Alternative Transient Program (ATP)

Publication Year: 2000, Page(s):268 - 274
| | PDF (332 KB)

Transient phenomena in the distribution system can cause severe problems in the behavior of high power cycloconverter-fed synchronous motor drives. The study of these problems have motivated this work, which presents the simulation of a three-phase 12-pulse cycloconverter with the Alternative Transient Program (ATP). This study exploits the capability of ATP to produce a satisfactory interaction b... View full abstract»

• ### Dynamic electrical-magnetic-thermal simulation of magnetic components

Publication Year: 2000, Page(s):287 - 292
Cited by:  Papers (1)
| | PDF (340 KB)

This paper describes how the modeling and simulation of electromagnetic devices can be extended to include dynamic thermal effects. The power generated by hysteresis inside ferrite cores is connected to a thermal model of the core material. The thermal conduction of the core material is modeled as is the convection of thermal energy from the core to the surrounding environment. The effective tempe... View full abstract»

• ### Physically based models of high power semiconductors including transient thermal behavior

Publication Year: 2000, Page(s):114 - 117
Cited by:  Papers (2)
| | PDF (260 KB)

Circuit simulation is a powerful tool for the design of high power converters, if suitable device models exist. Unfortunately, the commercially available circuit simulators do not have accurate models for high power semiconductors. Therefore, new device models are developed for power diodes and thyristor based devices, such as GTO, IGCT and MTO. These models are based on semiconductor physics, whi... View full abstract»

• ### Goals for a basic level IGBT model with easy parameter extraction

Publication Year: 2000, Page(s):91 - 96
Cited by:  Papers (2)
| | PDF (360 KB)

Three models were evaluated as possible “basic” level IGBT models, and none were found to be satisfactory. Specific goals for simple parameter extraction are proposed as the primary criteria in the development of basic IGBT models. A new basic model was developed which offers promising results. Performance can be improved with additional parameter optimization View full abstract»

• ### Structural modeling for simulation of power electronic systems

Publication Year: 2000, Page(s):64 - 67
| | PDF (256 KB)

Power electronic systems are described by nonlinear differential equations, typically of high order. Simulation of such systems increasingly requires the high speeds available only on multiprocessor computing systems. However, the traditional methods for partitioning the system are rather inconvenient, primarily because of the additional burden created by the current operation associated with dist... View full abstract»

• ### High level Simulink switch model for investigating capacitive effects

Publication Year: 2000, Page(s):241 - 246
Cited by:  Papers (3)
| | PDF (388 KB)

Often device capacitance is neglected as a loss path in power converters. In high voltage-low current conditions, it can lead to significant power loss as the capacitance is charged and discharged many times a second. Switch models are usually either ideal or include so much detail they slow a converter simulation. This paper presents a behavioral model that fills in between the two extremes. Impl... View full abstract»

• ### Automated parameter extraction software for advanced IGBT modeling

Publication Year: 2000, Page(s):10 - 18
Cited by:  Papers (25)
| | PDF (1408 KB)

A software package for extracting parameters to be used in advanced IGBT models is presented. In addition, new model equations and extraction procedures are introduced that more accurately describe a wide range of IGBT types including the Warp-Speed IGBTs. The parameter extraction software package consists of five programs that extract the 20 physical and structural parameters needed in the most r... View full abstract»

• ### Computationally effective algebraizated method of feedforward synchronous PWM [invertor applications]

Publication Year: 2000, Page(s):40 - 45
Cited by:  Papers (1)
| | PDF (292 KB)

The paper describes developed version of novel frequency-oriented methodology of direct pulse width modulation (PWM) of line-to-line output voltage of three-phase voltage source drive inverters, based on special piece-wise approximation of the function of active switching states from their position inside clock intervals. The method is based on two-stage quasi-sliding scheme of modulation and allo... View full abstract»

• ### Development of tools for the study of chaotic behavior in power electronics

Publication Year: 2000, Page(s):177 - 182
Cited by:  Papers (5)
| | PDF (532 KB)

This paper describes the development of software tools for the analysis of chaos in power electronics systems. This project was motivated by potential contributions of chaos theory in the design, analysis and control of power electronics circuits. Nonlinear analysis software and computer programs were used for the detection and analysis of chaotic components. Simulations of power electronics devic... View full abstract»

• ### A new approach in teaching power electronics control of electrical drives using real-time systems

Publication Year: 2000, Page(s):221 - 226
Cited by:  Papers (9)
| | PDF (884 KB)

A new approach in teaching power electronics and electrical drives is achieved at the Flexible Drives System Laboratory (FDSL) from Aalborg University by using the new Total Development Environment (TDE) concept that allows a full visual block-oriented programming of dynamic real-time systems to be done using the Matlab/Simulink environment. Basics in electrical drives and advanced control of PWM ... View full abstract»

• ### Stability of real-time modular simulation of analog systems

Publication Year: 2000, Page(s):263 - 267
| | PDF (356 KB)

In the approach described here, the authors consider modular simulation as a concurrent relaxation process for power electronics. It allows one to use a variety of methods developed in the area of relaxation-based simulation, though iterative, for the purpose of real time one-sweep simulation. In the near future, they expect increased demand for, and attention to, the techniques of improving stabi... View full abstract»

• ### Continuous approximation and the stability of averaging

Publication Year: 2000, Page(s):139 - 144
Cited by:  Papers (2)
| | PDF (448 KB)

Averaged models do not always correctly represent the stability of the systems being modeled. A well-known example is the peak-current controlled PWM converter in which subharmonic oscillation occurs when the duty ratio is larger than 50%. This paper is an effort to understand how stability might be changed in the process of averaging, and to develop alternative continuous-time models that preserv... View full abstract»

• ### Symbolically-aided simulation of nonlinear passive components

Publication Year: 2000, Page(s):284 - 286
Cited by:  Papers (2)
| | PDF (232 KB)

This paper describes a symbolically-aided computational procedure for building algebraic companion form (ACF) models of nonlinear passive components for use in time-domain circuit simulators. This procedure is based on the automatic differentiation technique (ADT) and requires the computation of the sensitivity or Jacobian matrices as do many other implicit integration algorithms. The ADT is utili... View full abstract»

• ### A novel power diode model for circuit simulation

Publication Year: 2000, Page(s):108 - 113
| | PDF (268 KB)

This paper presents a novel hybrid power diode model for circuit simulation. All parameters in this model can be determined experimentally. The performance of the model under different operation conditions are analyzed and compared with the experimental results. The model is implemented as a MAST template in the SaberTM simulator exhibiting much faster simulation speed compared with the... View full abstract»