CM Voltage Compensators for Power Electronic Interfaces

The experimental results presented in the paper have shown that the application of the PEIs might cause EMC related problems, especially in the case of the application of a group of connected converters. The most convenient way to reduce EMI currents and prevent aggregation of EMI currents introduced by a group of converters is through passive compensation of voltage interference sources inside of the single converters. In the paper the concept of the passive compensation of CM voltage at the output of converters has been verified in an experimental arrangement. The obtained experimental results confirm that the compensation of the CM voltage brings about significant attenuation of the CM currents in load circuits. The presented compensator can be integrated with single DC-DC converters as well as applied at the output of a group of the connected converters.