Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Tae Kil Kim

Dae Woong Han

Jae Young Choi

Jin Ho Kim

Jung Hwi Kim

Ji Wan Cha

Chul Min Ahn

Jeong Bin Yim

Jae Hyeon Lee

Jae Hak Kim

A system for estimating a rotor resistance of an induction motor includes: an equivalent torque curve generation unit to generate an equivalent torque curve based on output torques of the induction motor; a minimum current operation point determination unit to determine a minimum current operation point of the equivalent torque curve; an equivalent current phase variable control unit to variably control a rotor resistance of the induction motor when a stator current command of the minimum current operation point is applied to the induction motor; an output torque detection unit to detect the output torque of the induction motor when the rotor resistance is variably controlled; and a rotor resistance determination unit to determine a maximum torque among the detected output torques and determine an actual rotor resistance of the induction motor based on the rotor resistance when the maximum torque is generated.

System for estimating rotor resistance of an induction motor

A motor is provided. The motor includes a cooling system configured to cool a stator having a core wound around by a coil, wherein the cooling system includes oil holders installed on a side under the stator in an inner space of a motor housing and provided to allow oil to be collected up to a level capable of allowing at least some of a lower end section of the stator to be immersed for cooling.

Motor provided with cooling system

A rotor sleeve provides a direct cooling method in which oil flows into the rotor sleeve via a flow passage formed through an input shaft of a transmission and is distributed to a motor coil of a driving motor to cool the motor coil. The rotor sleeve has a flow passage structure capable of maintaining a balance between the amount of oil to be distributed toward a transmission and the amount of oil to be distributed toward an engine.

Rotor sleeve of driving motor and driving motor including the same

Growing community of inventors

Gyeonggi-do, South Korea

Tae Kil Kim