Electric power conversion systems – Current conversion – Using semiconductor-type converter
Patent
1981-03-19
1983-01-04
Shoop, William M.
Electric power conversion systems
Current conversion
Using semiconductor-type converter
363 71, 363 96, H02M 7515
Patent
active
043675220
ABSTRACT:
An inverter arrangement for generating a three-phase AC output voltage is provided with three pulse-controlled, free-running single-phase inverters. The inverters are connected at their inputs to a DC voltage source, and at their outputs to respective low-pass filters. The low-pass filters are connected to corresponding single-phase transformers, each having an output winding. The output windings of the single-phase transformers are connected to one another in a Y-circuit configuration to produce the output AC voltages, having a grounded neutral terminal. Each of the single-phase inverters is controlled by an associated pulse control device which contains a vector-oriented control device and a control unit. A vector oscillator generates signals corresponding to a symmetrical three-phase system of reference vectors for the vector-oriented control devices.
REFERENCES:
patent: 3050674 (1962-08-01), Moore
patent: 3144599 (1964-08-01), Brahm
patent: 3225282 (1965-12-01), Haas, Jr.
patent: 3354376 (1967-11-01), Corey et al.
patent: 3718853 (1973-02-01), Graf
Forstbauer Wilhelm
Kroworsch Hans-Peter
Kuller Herbert
Strop Jurgen
Shoop William M.
Siemens Aktiengesellschaft
Wong Peter S.
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