Active damper for EMI filter

Details Active damper for EMI filter Active damper for EMI filter

1992-03-05

1994-06-21

Stephan, Steven L.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 47, 333181, H02J 102

Patent

active

053233034

ABSTRACT:
An active damper for an L-C filter suppresses transients that appear on the DC link from a power supply. The damper suppresses the transients by filtering the line voltage to obtain its steady-state component and comparing the steady-state voltage to the instantaneous voltage on the DC link. When the two voltages differ, the active damper cancels the transient by dissipating the energy on the DC link and the energy stored in the filter's inductor.

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