Multi-level medium voltage data center static synchronous compensator (DCSTATCOM) for active and reactive power control of data centers connected with grid energy storage and smart green distributed energy sources

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United States of America Patent

PATENT NO 9774190
SERIAL NO

14481904

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Abstract

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Systems and methods for supplying power (both active and reactive) at a medium voltage from a DCSTATCOM to an IT load without using a transformer are disclosed. The DCSTATCOM includes an energy storage device, a two-stage DC-DC converter, and a multi-level inverter, each of which are electrically coupled to a common negative bus. The DC-DC converter may include two stages in a bidirectional configuration. One stage of the DC-DC converter uses a flying capacitor topology. The voltages across the capacitors of the flying capacitor topology are balanced and switching losses are minimized by fixed duty cycle operation. The DC-DC converter generates a high DC voltage from a low or high voltage energy storage device such as batteries and/or ultra-capacitors. The multi-level, neutral point, diode-clamped inverter converts the high DC voltage into a medium AC voltage using a space vector pulse width modulation (SVPWM) technique.

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Patent Owner(s)

  • INERTECH IP LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mondal, Subrata K South Windsor, US 20 154

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