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Electrical energy performs increasingly diverse functions through the widespread use of static converters. These converters are based on the use of semiconductor switching components that generate rapid voltage (dV/dt) and/or current (dI/dt) variations. This can result in electromagnetic disturbances that must be minimised in order to respect electromagnetic compatibility standards. Compliance with standards is often achieved by adding a heavy and bulky filter to the system. In order to optimise the EMC aspects, it is interesting to take into account the EMC constraint from the design phase, in order to do so, a predictive study of these disturbances must be available. In this work, the origins of electromagnetic disturbances created by a series chopper are presented. Electromagnetic interference in this DC/DC converter is determined by using simulation and experimental measurements.

Determination of electromagnetic disturbances in a buck chopper