Power input device with current pulse multiplier transformer to reduce harmonic currents in converter/inverter circuits and devices, and method of making the same

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United States of America Patent

PATENT NO 8810349
APP PUB NO 20110187484A1
SERIAL NO

13018937

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Abstract

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A power supply device comprising an advanced harmonic current quashing (AHQ) and current pulse multiplier (CPM) (AHQ/CPM) three-phase transformer having: a primary winding placed around a magnetic core and having three primary winding input leads to connect a three phase power supply; and a plurality of secondary windings placed around the magnetic core in a predetermined winding turns configuration to generate a plurality of three phase outputs, where each three phase output of the plurality of three phase outputs has a different phase angle from all other three phase outputs, with each unique phase angle associated with a three phase output of a corresponding secondary winding being determined based on the winding turns configuration utilized for the corresponding secondary winding. A variable frequency drive (VFD) having 3N converters/inverters coupled to the secondary windings outputs exhibit substantially reduced harmonic currents and a current pulse number of greater than 6N.

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Patent Owner(s)

Patent OwnerAddress
HOWARD INDUSTRIES INC580 EASTVIEW DRIVE LAUREL MS 39441

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Owen, Donald W Plano, US 33 355

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