Control device for electric rotary machine
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United States of America Patent
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Apr 1, 2014
Grant Date -
Aug 11, 2011
app pub date -
Feb 3, 2011
filing date -
Feb 8, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A control device controls a power conversion circuit so as to adjust control values of a motor generator to optimum values. The power conversion circuit has switching elements for selectively connecting and disconnecting a battery and terminals of the motor generator. The control device sets a simulated voltage vector V(n+1) in one control-period forward to perform a prediction model control. On predicting a current, the control device uses a model in a rotary coordinate system, and sets the median value of the voltage vector V(n+1) in one control-period Tc to a value of the voltage vector V(n+1) in the rotary coordinate system. The control device sets, as the value of the voltage vector V(n+1) in the rotary coordinate system, the voltage vector V(n+1) when the half-time of the control-period Tc is elapsed from the time at the electric angle θ(n+1).
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