Hyundai Motor Company

Kia Corporation

Jae Hak Kim

Jung Hwi Kim

Bong Jin Kim

Hee Jung Jung

Choung Hyoung Kim

Seong Gu Ro

Ill Young Lee

Chong-Kyo Lee

Jong Chan Son

Uk-Il Kim

Tae Kil Kim

Cheol Soon Lee

Young Lan Hyun

Jun Ki Choi

Hwa Jung Nam

Cheol Hae Lee

Hong Suk Shin

Won Jang Jeong

Joong Myung Cho

Kyungjin Kim

A vertiport system according to an embodiment may include a first area, a second area provided in a different position from the first area, and a transfer unit configured to transfer an aircraft between the first area and the second area, wherein the transfer unit may include a transfer rail connecting the first area and the second area, and a moving device configured to accommodate at least a portion of a landing gear of the aircraft and the moving device being configured to move along the transfer rail.

Vertiport system including transfer unit using rail moving device

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

Growing community of inventors

Hwaseong-si, South Korea

Jae Hak Kim