Electricity: motive power systems – Phasing or angular or linear positional control of movable...
Reexamination Certificate
2005-08-16
2005-08-16
Ip, Paul (Department: 2837)
Electricity: motive power systems
Phasing or angular or linear positional control of movable...
C318S786000, C318S747000, C318S801000, C318S807000, C363S043000, C363S037000, C363S041000, C323S211000, C323S239000, C323S300000
Reexamination Certificate
active
06930459
ABSTRACT:
A method with which the load current and thus the load moment of an asynchronous motor that is controlled via a phase-controlled two-phase thyristor power controller, can be easily influenced so as to allow a smooth starting operation. According to a first embodiment, the ignition point is determined in the controlled phase in order to adapt the flow angles of the subsequent current half waves. According to a second embodiment, the ignition point of the subsequent current half waves is brought forward in both controlled phases.
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Fritsch Andreas
Griepentrog Gerd
Runggaldier Diethard
Seitz Johann
Harness & Dickey & Pierce P.L.C.
Ip Paul
Siemens Aktiengesellschaft
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