Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Reexamination Certificate
2009-01-06
2010-02-09
Pascal, Robert (Department: 2817)
Wave transmission lines and networks
Coupling networks
Frequency domain filters utilizing only lumped parameters
C333S167000, C333S175000, C333S177000
Reexamination Certificate
active
07659797
ABSTRACT:
EMC filter, connectable between a supply network and an electric operated appliance to reduce conduction noise between said supply network and said appliance, comprising one voltage regulator having an output terminal whose potential is kept close to the earth potential, in order to reduce the voltage drop, at mains frequency, across a “Y” capacitor or an active shunt module. In this way the leakage current to earth is sensibly reduced. The device of the invention is especially useful in corner-earthed three-phase lines or in conjunction with RCD devices.
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Yo-Chan Son and Seung-Ki Sul, A New Active Common-Mode EMI Filter for PWM Inverter, IEEE Transactions on Power Electronics, Nov. 2003, pp. 1309-1314, vol. 18, No. 6.
Yo-Chan Son and Seung-Ki Sul, Generalization of Active Filters for EMI Reduction and Harmonics Compensation, IEEE, 2003, pp. 1209-1214.
Blank Rome LLP
Glenn Kimberly E
Pascal Robert
Schaffner EMV AG
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