Electricity: electrical systems and devices – Safety and protection of systems and devices – Voltage regulator protective circuits
Reexamination Certificate
2008-07-01
2008-07-01
Sherry, Michael J (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Voltage regulator protective circuits
Reexamination Certificate
active
07394627
ABSTRACT:
A frequency converter includes an intermediate circuit without any capacitors and an electronics which is supplied with power from a power supply device. The power supply device has a buffer capacitor which is disposed on an input side of the power supply device and connected electrically in parallel with the intermediate circuit. Connected to the buffer capacitor is a supply line in which a decoupling diode is disposed. A semiconductor adapted to be switched off is connected electrically back-to-back in parallel with the decoupling diode and has a control output which is connected to an output of an identification device for recognizing a power-line failure.
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Matrix Convert Topologies With Reduced Number of Switches, von Lixiang Wei, T.A. Lipo und Ho Chan, abgedruckt in 33rd Proc. Conf. Rec. IEEE PESC, 2002,pp. 57-63, Fig 3.
“Analytically Closed Calculation of the Conduction and Switching Losses of Three-Phase AC-AC Sparse Matris Converters” .F. Schafmeister, M. Baumann and J.W. Kolar, abgedruckt im Tagungsband “EPE 2002 Dubrovnik”.
Bruckmann Manfred
Schierling Hubert
Clark Christopher J
Day Ursula B.
Feiereisen Henry M.
Sherry Michael J
Siemens Aktiengesellschaft
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