Concepts with liquid cooling are becoming more popular in power electronics in the higher kW or MW range, because liquid cooled converters can be built significantly smaller than air-cooled models. For maximum benefit, the immediate peripheral devices, such as input and output filters, need to be equipped with water connections as well. Schaffner now offers custom liquid cooled DV/DT filters. In co-operation with the manufacturer of power electronics, these filters can be tailored to meet the requirements of the system. The filters protect AC motors in drive engineering from premature aging or destruction by the PWM output signal, increase motor service life and contribute to overall reliability. The water cooled versions allow for lower losses, compact designs and support a higher power density. The filters can be custom-built for applications up to 1600A and 690V AC. The open panel design is optimised for cabinet integration without the need for an expensive filter enclosure.
