The software described in this document is furnished under license agreement. The software may be used or copied only under the terms of the license agreement. No part of this manual may be photocopied or repro- duced in any form without prior written consent from The Math Works. In FEDERAL ACQUiSITION to all acquisitions of the Program and Documentation by or for the federal

For contact information about worldwide offices, see the MathWorks Web site. MAT-File Formo COPYRIGHT 1984-1999 by The Math Works, Inc. The software described in this docu nder a license agreement. The software may be used or copied only under the No part of this manual may be photocopied or repro- duced in any form without pri

For contact information about worldwide offices, see the Math Works Web site. Writing S-Functions COPYRIGHT 1998-2002 by The Math Works, Inc. The software described in this document is fur d under a license agreement. The software may be used or copied only under the terms of the license agreement. No part of this manual may be photocopied or repro-

How to Contact The mathWorks www.mathworks.com comp.soft-sys matlab Newsgroup @supportemathworks.comtechnicalsupport suggestemathworks.com Product enhancement suggestions bugs@mathworks.com Bug reports docamathworks. com

How to contact the mathWorks: www.mathworks.com Web comp. soft-sys matlab Newsgroup supportamathworks com Technical support suggestemathworks.com Product enhancement suggestion

How to Contact The MathWorks 508-647-7000 Phone 508-647-7001 ax C The MathWorks, Inc Maill 3 Apple Hill Drive Natick. MA 01760-2098 http://www.mathworks.comWeb Anonymous FTP server comp. soft-sys. matl ab

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Supplement Practical Application Issues of Power Semiconductor Devices and d Gate Triggering Control Circuit for Thyristor Rectifiers

7.1 Basic concepts on soft-switching 7.2 Classification of soft-switching- techniques 7.3 Typical soft-switching circuits and techniques

Applications of Inverters Conversion of electric power from DC type energy sources to AC type load -Battery Photovoltaic cell (Solar cell) Fuel cell +As a part of composite converter AC-DC-AC frequency converter(for AC motor drive) AC-DC-AC constant-voltage constant-frequency converter(for uninterruptable power supplies)