Hyundai Motor Company

Kia Motors Corporation

Sang Hwa Do

Kyoung Bum Kim

Jae Bum Park

Nyeon Han Hong

Yeon Ho Kim

Hee Youl Lee

Hee Ra Lee

Hong Seok Yang

Ji Yeon Kim

Yong Sung Jang

Myung Gyu Kim

A motor noise reduction control apparatus of an eco-friendly vehicle includes: a driving mode selector for selecting one of a high fuel economy driving mode and a low-noise driving mode; and a motor controller configured to generate a current command for motor drive using a maximum motor efficiency control application current map when the high fuel economy driving mode is selected, and to generate a current command for motor drive using a minimum torque ripple control application current map when the low-noise driving mode is selected.

Motor noise reduction control apparatus of eco-friendly vehicle and method for controlling thereof

A structure for fixing a permanent magnet in a rotor core. The structure includes a magnet accommodation portion into which a permanent magnet is to be inserted, an internal hole formed in an area adjacent to one end of the magnet accommodation portion, a pressing portion provided between the magnet accommodation portion and the internal hole. The pressing portion forms a convex shape toward the permanent magnet to be in contact with the permanent magnet.

Structure for fixing permanent magnet in rotor core

The present disclosure provides a motor having an asymmetric rotor core that can more effectively improve operation efficiency of a motor and improve NVH performance in correspondence to the tendency of high power and high efficiency of motors by asymmetrically forming a first slot and a second slot for inserting permanent magnets of the rotor core, arranging a first permanent magnet and a second permanent magnet at different embedment angles, and forming a separation wall inclined at a predetermined angle and having a uniform thickness between the first slot and the second slot.

Motor having asymmetric rotor core

An interior permanent magnet electric motor forms a buried angle of a left permanent magnet of a slot part of a rotor differently from a buried angle of a right permanent magnet of the slot part of the rotor, so as to reduce torque ripple while sufficiently maintaining motor efficiency as compared to an I-type rotor to effectively improve noise, vibration, and harshness performance.

Inferior permanent magnet electric motor and rotor included therein

A wound rotor motor is provided, in which a rotary shaft is arranged in the vertical direction, to immerse lower coil portions of a stator and a rotor in cooling oil, thereby improving the cooling effect beyond that of a conventional configuration, in which lower coil portions are partially immersed, and consequently decreasing the capacity of an oil pump. A wound rotor motor is provided, in which a rotary shaft is arranged in the vertical direction and has therein a flow passage, through which cooling oil moves up from the region below the rotor and is sprayed to the region above the rotor by centrifugal force generated by rotation of the rotor, thereby enhancing the motor-cooling effect, decreasing the frictional loss of the rotor due to the cooling oil, and consequently improving the operational efficiency of the motor.

Wound rotor motor for vehicle

An internal permanent magnet motor may include a stator of a annular shape, and a rotor coaxially disposed inside the stator by positioned between a gap between the rotor and the stator and having a plurality of permanent magnets embedded therein and spaced from each other in a circumferential direction along a circumference of the rotor, wherein the stator has a plurality of first notches formed on an internal circumferential surface facing the rotor in a height direction perpendicular to the circumferential direction thereof, and the rotor has a plurality of second notches formed on an external circumferential surface facing the stator in a height direction perpendicular to the circumferential direction thereof.

Growing community of inventors

Gyeonggi-do, South Korea

Sang Hwa Do