Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1983-10-17
1985-03-26
Wong, Peter S.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 41, 363132, H02P 1320
Patent
active
045077240
ABSTRACT:
An n-phase inverter for developing polyphase AC power from DC power developed by a DC source over first and second DC bus lines and a neutral line includes circuitry for preventing the return of regenerative currents developed by a load connected to the output of the inverter to the DC source. The circuitry includes means for sensing the presence of regenerative currents, and switches which are operated when a regenerative current is sensed to disconnect the DC source from the inverter and to shunt the regenerative current back to the load. The inverter may therefore be used with DC sources which cannot accept regenerative currents. Furthermore, the size of a DC bus filter between the DC source and the inverter may be substantially reduced.
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patent: 3775663 (1973-11-01), Turnbull
patent: 3970916 (1976-07-01), Kienscherf
patent: 4032831 (1977-06-01), Nabae et al.
patent: 4162525 (1979-07-01), Epp
patent: 4310866 (1982-01-01), Wirth
patent: 4443841 (1984-04-01), Mikami et al.
patent: 4446513 (1984-05-01), Clenet
Sundstrand Corporation
Wong Peter S.
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