Three-phase inverter arrangement
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United States of America Patent
Stats
-
Jan 4, 1983
Grant Date -
N/A
app pub date -
Mar 19, 1981
filing date -
Mar 28, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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