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    CAD/CAE for PowerElectronics

    SEA, II

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    Introduction

    - CADD Computer-Aided Design and Drafting (Proiectare asistata de

    calculator si desen tehnic) CAE Computer-Aided Engineering (Inginerie asistata de calculator)

    ompu er- e ng neer ng represen s any use o compu er so ware osolve engineering problems in tasks such as analysis, simulation, design,manufacture, planning, diagnosis, repair, etc.

    Computer-Aided Design (CAD) is one of the many tools used by engineers and

    the type of software in question. There are several different types of CAD. Eachof these different types of CAD systems require the operator to think differently

    about how he will use them and he must design their virtual components in adifferent manner for each. Power electronics is one of the many fileds that use computer software to

    help engineers in analysis, simulation and design of their components. This course will present the basics of CAD/CAE for Power Electronics and the

    course oal is to ensure the students with the followin knowled e:

    The main used software for CAD/CAE in power electronics; The methods of modeling and simulating an electrical power converter; The analysis and design of the power electronics circuits;

    The basic rinci les behind the model of an electrical circuit.

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    Brief introduction to power electronicsower ec ron cs s power convers on an con ro rom one orm o power

    (energy) source to another form by using electronic converters, whichprovides the needed interface between the electrical source and theelectrical load.

    ,number of phases. A controller accomplishes the power flow controlbetween the two sides of the converter, in which the conversion of voltagesand currents should be achieved with as high energy-efficiency and highower densit as ossible.

    Among multiple applications that use power electronics interface for powerflow control, the most common and important applications are:

    Adjustable speed drives (stationary and mobile applications);

    Converters for interfacing renewable energy sources to the grid.

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    The efficiency of power converters

    The efficiency is the most important feature of a power electronicsconverter.

    Hi h efficienc lead to low ower losses within converter. Also, small size

    and reliable operation is then feasible. The efficiency is a good measure of converter performance.

    A goal of the current technology is to construct converters of small size and.

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    Basic types of power converters

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    Power semiconductors

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    Main DC-DC converters

    Boost converter

    uc - oost converter

    Ck converter

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    CAD/CAE Software for electrical engineering and

    PLECS (www.plexim.com) PSIM (www.powersimtech.com)

    . . Matlab/Simulink/SimPowerSystem (www.mathworks.com) Ansoft/Simplorer (www.ansoft.com)

    . . SPICE (free student version: http://www.electronics-lab.com/) Circuit Magic (www.circuit-magic.com) Multisim www.ni.com/multisim NL5 (http://nl5.sidelinesoft.com/) Various designing applications provided by manufacturers of electronic

    components.e resources: www.smps.us http://www.daycounter.com/Calculators/ htt ://www.irf.com/desi n-center/m ower/

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    http://www.powerdesignersusa.com/InfoWeb/calculators/IGBTCalc/igbt_calc.shtm