Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1997-07-02
1999-09-21
Wong, Peter S.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363127, 363 71, H02M 542, H02M 700, H02M 7217
Patent
active
059562455
ABSTRACT:
A rectifier having an input and an output and a method of controlling the rectifier. The rectifier comprises: (1) switching circuitry coupled between the input and the output, the switching circuitry adapted to operate in selected one of (a) an active bidirectional mode of operation and (b) an inactive unidirectional mode of operation to rectify substantially alternating current at the input to produce substantially direct current at the output and (2) control circuitry coupled between the rectifier output and a control input of the switching circuitry, the control circuitry capable of sensing an output current level of the rectifier and transitioning the switching circuitry between the active bidirectional mode and the inactive unidirectional mode as a function of the output current level thereby to prevent substantial reverse power flow through the rectifier. The rectifier is particularly useful in power systems having a plurality of rectifiers operating in parallel to prevent one rectifier from driving the other.
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Lucent Technologies - Inc.
Vu Bao Q.
Wong Peter S.
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