Electric drive system and energy management method
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United States of America Patent
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Apr 9, 2019
Grant Date -
Dec 21, 2017
app pub date -
Sep 1, 2017
filing date -
Dec 3, 2012
priority date (Note) -
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Abstract
An electric drive system includes an energy storage system (ESS), a power conversion system, and an alternating current (AC) traction system. The ESS provides or receives electric power. The ESS includes a first energy storage unit and a second energy storage unit. The power conversion system is electrically coupled to the ESS for converting an input power to an output power. The AC traction system is electrically coupled to the power conversion system for converting the output power of the power conversion system to mechanical torques. The AC traction system includes a first AC drive device and a second AC drive device. An energy management system (EMS) is in electrical communication with the ESS, the AC traction system, and the power conversion system for providing control signals.
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