Patent ID: 9531311
Filing Date: 2016-12-27
CPC Classification: B62D,H02P

Claim Text:
1. A current reference generator to control a brushless motor in a motor control system, the current reference generator comprising: a locate peak torque module that determines a maximum possible torque and a direct axis current that corresponds to the maximum possible torque based on a plurality of motor parameters, a maximum voltage, a motor velocity of the brushless motor, and a sign of a torque command; an intermediate calculations module that determines a plurality of intermediate values based on the motor parameters, the maximum voltage, and the motor velocity, wherein the intermediate values are calculated in one interval and used repeatedly over multiple intervals by the locate peak torque module; a limit torque command module that limits the torque command to the maximum possible torque; a locate minimum current module that determines a value of the direct axis current that results in a minimum motor current; and a solve current reference module that generates a reference vector that satisfies the torque command as limited by the direct axis current that corresponds to the maximum possible torque and the direct axis current that results in the minimum motor current.