Teco-westinghouse Motor Company

Bhaskara Palle

Enrique Ledezma

Alex Skorcz

Ryan Edwards

Randall E Pipho

Paulo Guedes-Pinto

Rose Metzler

Thomas Keister

Kaiyu Wang

Hossein Karimi

In one aspect, a medium voltage power converter includes a plurality of slices each having: a transformer including a plurality of primary windings to couple to a utility source of input power and a plurality of secondary windings; and a plurality of power cubes coupled to the plurality of secondary windings, each of the plurality of power cubes comprising a low frequency front end stage, a DC link, and a high frequency silicon carbide (SiC) inverter stage to couple to a high frequency load or to a high speed machine.

High frequency medium voltage drive system for high speed machine applications

In one aspect, a medium voltage power converter includes a cabinet having: a power cube bay to house a plurality of power cubes, each of the plurality of power cubes adapted within a corresponding enclosure and comprising a low frequency front end stage, a DC link and a high frequency back end stage, the plurality of power cubes to couple to a high speed machine; and a plurality of first barriers adapted to isolate and direct a first flow of cooling air through one of the plurality of power cubes; and a transformer bay having at least one transformer to couple between a utility connection and the plurality of power cubes, the transformer bay including a plurality of cooling fans to cool the at least one transformer.

Cooling methods for medium voltage drive systems

In one embodiment, a power cell module includes: a high frequency line converter (HFLC) to receive a phase of input power from a utility source, the HFLC including a first silicon carbide (SiC) stage and a second SiC stage; a transformer having a primary coil coupled to the HFLC and a secondary coil coupled to a high frequency motor converter (HFMC); the HFMC to output a phase of output power to a load, the HFMC including a third SiC stage and a fourth SiC stage; and a two-phase cooling system having conduits that are adapted to provide a flow of cooling media through the HFLC, the transformer and the HFMC.

Modular size multi-megawatt silicon carbide-based medium voltage conversion system

In one embodiment, a system includes a plurality of slices each having a transformer including a primary winding to couple to an input power source and a plurality of secondary windings each to couple to one of a plurality of power cells of the slice. Each of the power cells of a first slice may have an output that is phase rotated with respect to a correspondingly positioned power cell of a second slice.

System, apparatus and method for improving input power quality in a modular power inverter

In an embodiment, a power converter includes: a plurality of power amplifier units, each having: a plurality of slice each with a power conversion module including an AC/DC/AC converter; a mains controller to control the plurality of slices; and a feedback conditioning system coupled to the mains controller; a plurality of input contactors and a plurality of output contactors via which each of the plurality of power amplifier units is to couple between a transformer and a load; and a master controller coupled to the plurality of power amplifier units.

Growing community of inventors

Round Rock, TX, United States of America

Bhaskara Palle