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Conducted emissions of electronic power sources for resistance welding
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| Author(s) |
H. Mecke; R. Doebbelin; Th. Winkler |
| Abstract |
The power parameters and mostly discontinuous operation of resistance welding machines result in
several special aspects regarding measurements of the electromagnetic emissions of these machines.
These peculiarities which are explained in the paper primarily relate to the decoupling of the disturbance
voltages, to the coordination between the operation of the resistance welding machine and the
measuring sequence of the EMI (electromagnetic interference) receiver as well as to the choice of the
disturbance voltage level evaluation performed by the EMI receiver. Furthermore, investigations into
factors influencing conducted emissions and noise mitigation measures are presented. While those influences
which originate from the welding process are insignificant, the power sections of the machines
with the power semiconductors used there proved to be the major sources of electromagnetic
emissions. Concerning noise reduction the effects of mains filters and noise-suppression capacitors are
compared. |
| Download |
| Filename: | EPE-PEMC2002 - T4-002 - Mecke.pdf |
| Filesize: | 480.9 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-05-13 by System |
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