Unidirectional three phase pulse controlled rectifier system with failed phase voltage operation
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United States of America Patent
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Mar 2, 2004
Grant Date -
Feb 27, 2003
app pub date -
Oct 1, 2002
filing date -
Jan 5, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for converting a three-phase voltage system to a DC voltage is supported by an output capacitor and a star circuit. On the input side of filter capacitors is a controllable three-phase bridge and at a positive output of the bridge circuit, a current-stabilizing inductance is included, which, in conjunction with a step-up controller diode and a step-up controller transistor, forms a DC voltage/DC voltage step-up controller which is integrated in the converter structure. The phase arms of the three-phase bridge have an identical structure and their conductance state can be controlled by control switches. In order to produce an output voltage from the system which is below the mean value of the maximum output voltage of the bridge circuit, the step-up controller transistor remains in the switched-off state, and a voltage value which is above the maximum output voltage is formed.
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