Modular multilvel converter and control framework for hybrid energy storage

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United States of America Patent

PATENT NO 9906057
SERIAL NO

14878817

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Abstract

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A modular multilevel converter for hybrid energy storage includes three phases connectable in series to a battery, and in parallel to one another. Each phase includes at least two arms of sub-modules and buffer inductors, and each of the sub-modules comprises a half-bridge and an ultracapacitor. A two layer controller, including a coordination layer and a converter layer, is configured to independently control battery output power and ultracapacitor output power, and to distribute a power load between the battery and the ultracapacitor to optimize the performance of a hybrid energy storage system.

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Patent Owner(s)

  • NEC CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guo, Feng Columbus, US 180 1345
Sharma, Ratnesh Fremont, US 111 1373
Ye, Yanzhu San Jose, US 18 93

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