Lincoln Electric SVM135-B User Manual

SECTION E-1

THEORY OF OPERATION

SECTION E-1

POWER WAVE 455/POWER FEED 10

TABLE OF CONTENTS

-THEORY OF OPERATION SECTION-

Theory of Operation ................................................................................................................................. Section E

Modular Inverter Based Welding System...........................................................................................

E-2

System Diagram A .............................................................................................................................

E-2

System Diagram B .............................................................................................................................

E-3

System Diagram C.............................................................................................................................

E-4

Power Source General Description....................................................................................................

E-5

Input Voltage and Precharge .............................................................................................................

E-5

Switch Boards and Main Transformer................................................................................................

E-6

Control Board.....................................................................................................................................

E-7

Output Rectifier and Choke................................................................................................................

E-8

Thermal Protection.............................................................................................................................

E-9

Protective Circuits ..............................................................................................................................

E-9

Over Current Protection .....................................................................................................................

E-9

Under/Over Voltage Protection ..........................................................................................................

E-9

Insulated Gate Bipolar Transistor (IGBT) Operation..........................................................................

E-10

Pulse Width Modulation .....................................................................................................................

E-11

Minimum Output ..........................................................................................................................

E-11

Maximum Output .........................................................................................................................

E-11

Control Box (User Interface) ..............................................................................................................

E-12

Power Feed 10 Feed Head................................................................................................................

E-13

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