| Abstract |
A new state-of-the-art of medium and high-power converters with the IGBT technology
makes switching processes faster but increases in the same time the electromagnetic interference
level. Electromagnetic compatibility of high-frequency converters are concerned with the application
of high-current IGBT devices specially under hard switching operation. Influence of the commutation
in different types of IGBT modules is discussed, their environment, their behaviour and
weaknesses in the aspect of conducted and radiated EMI to meet the EMC european standards. Influence
of driving strategy, mode of commutation, level of switched current like a circuit stray parameters
effects on conducted perturbances are shown. Solutions are proposed to improve converter safety
and to reduce emission level without degradation of high-switching frequency and inverter efficiency. |
