Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1981-12-18
1984-04-03
Smith, Jr., David
Electricity: motive power systems
Induction motor systems
Primary circuit control
318805, 363 72, H02P 540
Patent
active
044410646
ABSTRACT:
A twelve-pulse control current inverter system having two six-pulse powered channels connected to a source of variable dc current is selectively operable to control either a three-phase motor or a double three-phase motor. Signals representing the phase currents of each of the two channels are combined with direct and quadrature motor flux signals, the latter signals being shifted in phase in the case of the double three-phase motor, to produce torque signals representing the motor torque produced by each of the two powered channels. These two torque signals are then combined to provide a total torque signal which, in turn, is utilized in the development of an angle signal for the control of the two current inverters.
REFERENCES:
patent: 3611085 (1971-10-01), Rosenberry
patent: 3864620 (1975-02-01), Abbondanti
patent: 4088934 (1978-05-01), D'Atre et al.
patent: 4230979 (1981-10-01), Espelage et al.
patent: 4258416 (1981-03-01), Walker et al.
patent: 4281276 (1981-07-01), Cutler et al.
patent: 4292531 (1981-09-01), Williamson
patent: 4349772 (1982-09-01), Weiss
Cutler John H.
Walker Loren H.
General Electric Company
Renner Arnold E.
Smith Jr. David
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