Transformerless multi-level power converter
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United States of America Patent
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May 22, 2007
Grant Date -
Mar 2, 2006
app pub date -
Aug 25, 2004
filing date -
Aug 25, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The cascaded, multi-level inverter can be found in a variety of applications and in a variety of industries. The inverter is typically used as a motor drive to provide variable voltage and variable frequency to a propulsion motor or other loads requiring variable frequency and voltage. In the present invention, the transformer is eliminated and its function included in an existing generator by adding a plurality of secondary windings to supply the isolated voltages needed by the multi-level power converter. Two specific examples of the present invention include a cascaded, multi-level inverter, or a variant referred to as the multi-source, flying source inverter, whose ac input voltage is derived from an electromagnetic generatorator.
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