Inventor · disambiguated record
Manfred Weibelzahl
Also filed as: WEIBELZAHL MANFRED
10 granted patents·125 citations·filing 1974–1988
90Inventor score
Files withSIEMENS AG10
Top patents by PatentIndex Score
10 records- 0171US4322766AMonitoring device for the capacitor battery of a d-c filter circuitSIEMENS AG·Filed 1980·Granted Mar 30, 1982·24 cites·4 claims
- 0262US4205368AMethod for the transmission of DC current between at least one rectifier station and several inverter stationsSIEMENS AG·Filed 1977·Granted May 27, 1980·16 cites·3 claims
- 0360US4837671AState signal formation for indicating the transition into the bypass mode of operation in an apparatus for high-voltage D-C transmissionSIEMENS AG·Filed 1988·Granted Jun 6, 1989·21 cites·15 claims
- 0453US4685044AMethod and apparatus for suppressing resonance phenomena in the A-C network on the inverter side of a high voltage D-C transmission systemSIEMENS AG·Filed 1985·Granted Aug 4, 1987·16 cites·13 claims
- 0552US4074348ACircuit arrangement with a number of cycloconverters, particularly direct cycloconverters in y-connectionSIEMENS AG·Filed 1976·Granted Feb 14, 1978·9 cites·3 claims
- 0652US3942091AMethod and apparatus for operating a converter fed rotating field machineSIEMENS AG·Filed 1974·Granted Mar 2, 1976·8 cites·9 claims
- 0750US4008428ACircuit arrangement with a number of frequency converters, particularly Y-connected direct frequency convertersSIEMENS AG·Filed 1976·Granted Feb 15, 1977·8 cites·1 claims
- 0849US4888674AMethod and apparatus for decoupling the active and reactive power control for a high voltage DC transmission line coupling two networksSIEMENS AG·Filed 1988·Granted Dec 19, 1989·11 cites·10 claims
- 0941US4309749ACircuit having improved firing angle symmetry for ignition pulses in the control of a multipulse rectifierSIEMENS AG·Filed 1980·Granted Jan 5, 1982·8 cites·7 claims
- 1030US4326230ACircuit for monitoring the voltage stress of a capacitorSIEMENS AG·Filed 1980·Granted Apr 20, 1982·4 cites·4 claims
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