Fault tolerant system and method for continuous skip-fire pulse width modulation for an active neutral point clamped converter

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United States of America

PATENT NO 12244244
APP PUB NO 20230353039A1
SERIAL NO

17731780

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Abstract

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A controller-implemented method and system for operating a multi-level bridge power converter connected to a power grid in a fault-tolerant operational mode, the power converter including a first converter coupled to a DC link, the first converter including a plurality of switching devices. The method and system determine an on/off scheme for the switching devices in the first converter when one or more of the switching devices has failed in a shorted state, wherein the on/off scheme is dependent upon phase current direction through the first converter. The phase current direction is indirectly determined by sensing a pole voltage of the first converter and implementing the on/off scheme in the fault-tolerant mode when the pole voltage changes from zero to a +/−value indicating that the phase current through the first converter has switched direction.

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Patent Owner(s)

  • GENERAL ELECTRIC RENOVABLES ESPANA, S.L.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chaudhari, Pushkar Chandrakant Bengaluru, IN 4 1
Jha, Kapil Bengaluru, IN 35 62
Michener, Nathaniel Robert Roanoke, US 9 12
Ramirez, Sanchez Fernando Arturo Salem, US 18 20

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