Method for controlling voltage of DC link for electric vehicle
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United States of America Patent
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May 5, 2009
Grant Date -
Dec 27, 2007
app pub date -
Dec 13, 2005
filing date -
Nov 17, 2005
priority date (Note) -
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Abstract
Disclosed is a method for controlling a voltage of a DC link for an electric vehicle, which can reduce a capacitance of the DC link interposed between an inverter and a DC/DC converter.The method for controlling the voltage of the DC link in a power system of a vehicle including a battery, a DC/DC converter, the DC link, an inverter, a motor, and a control part controlling the DC/DC converter and the inverter includes the steps of installing a compensator in a control loop of the control part such that a DC link current of the DC/DC converter follows a DC link current of the inverter, calculating a predetermined compensation term based on information of the motor inputted into the compensator, and applying the compensation term to a voltage node in the control loop of the control part in the compensator.
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