Hyundai Motor Company

Kia Motors Corporation

WoongChan Chae

Hyoungjun Cho

Jung Shik Kim

Sanghoon Moon

YoungJin Shin

Sangjin Park

Kyungsoo Park

Yeonho Kim

Jungwoo Lee

Kyoungbum Kim

SangHwa Do

Dongyeon Han

Yongsung Jang

A motor having an improved assembly structure of a rotor core and a magnet is provided. The motor comprising a stator and a rotor that rotates with respect to the stator. The rotor comprises a rotor core that is disposed rotatably with respect to a rotary shaft and has a plurality of magnet coupling apertures disposed apart from each other at a particular interval in a circumferential direction of the rotary shaft. Additionally, a magnet is inserted into the magnet coupling aperture and a plate is coupled to opposite end portions of the rotor core. The plate includes a magnet support portion that is configured to support the magnet.

Motor including rotor core and plate supporting magnet

A vehicle and method of controlling the same are provided in which the performance of an electric motor is prevented from being degraded by efficiently and more accurately calculating the temperature of a permanent magnet within the electric motor to adjust the amount of power supplied to the electric motor. The vehicle includes an electric motor having a stator, a rotor, and a permanent magnet and a sensor that measures the temperature of the electric motor. An inverter drives the electric motor and a controller generates a predetermined heat quantity by supplying power to the electric motor to calculate the temperature of the permanent magnet based on the temperature of the electric motor at a predetermined point measured using the sensor. When the temperature of the permanent magnet exceeds a predetermined temperature, the controller reduces the supply of the power.

Vehicle and method of controlling the same

An apparatus for controlling a drive motor of a vehicle in which a wound rotor synchronous motor is mounted includes: an inverter which controls a stator current supplied to a stator of the drive motor and a rotor current supplied to a rotor of the drive motor; and a drive motor controller which controls the inverter such that the stator current and the rotor current are supplied to the drive motor when a temperature of the rotor is less than a threshold value, and only the stator current is supplied to the drive motor when the temperature of the rotor is greater than or equal to the threshold value.

Apparatus for controlling drive motor of vehicle and method using the same

A temperature calculation system includes a yoke disposed along an inner circumference, first and second teeth arranged on an inner circumference surface of the yoke while having an interval set in a circumference direction, and a coil member formed between the first and second teeth and including a plurality of coils, forms a thermal equivalent circuit of the coil member, and calculates a temperature of a set portion of the coil member. An outer circumference surface temperature and an inner circumference surface temperature of the coil member are calculated by using radial conduction resistance using a temperature of an inner one side of the coil member. An average temperature of the coil member is calculated by using compensation resistance from the temperature of the inner one side of the coil member, thermal capacity of the coil member, and a heating amount of the coils formed in the coil member.

Temperature calculation system of motor using thermal equivalent circuit

A vehicle includes: a motor including a stator and a rotor; an inverter configured to drive the motor; a battery, which is rechargeable; and a controller configured to change a position of the rotor based on whether the position of the rotor is identical to a predetermined position. Additionally, the controller is configured to control the inverter such that the battery is charged after the position of the rotor changes.

Vehicle and a control method thereof

A cooling structure of a drive motor may include a ring-shaped support member disposed on the inside of a housing and supporting the stator core of the drive motor, in which the support member may have a channel for cooling oil flow therein and nozzle openings for spraying the cooling oil to the stator core and a stator coil wounded around the stator core.

Cooling structure of drive motor

A temperature calculation system for a motor uses a thermal equivalent circuit wherein a yoke is disposed to be fixed onto an inner circumferential surface of a housing of the motor, a coolant chamber in which a coolant flows is formed in a circumferential direction in the housing, and the thermal equivalent circuit including thermal resistance coefficients and temperatures is used. An endothermic amount of the coolant flowing in the coolant chamber of the housing is calculated by using an average temperature of the housing and a preset equation.

Temperature calculation system for a motor using a thermal equivalent circuit

A system of calculating temperature may include: a motor including a housing having opened ends, a cover connected to the housing to close at least one of the opened ends, a shaft rotatably disposed in the housing and having one end which penetrates through a center portion of the cover, a rotor fixed on an exterior circumference of the shaft in the housing and the cover, a stator fixed on an interior circumference of the housing, and an air gap formed between an exterior circumference of the rotor and an interior circumference of the stator; an input portion receiving a real time input and a predetermined input; and a control portion establishing a thermal equivalent circuit using the inputs of the input portion and convection or conduction characteristics between constituent elements of the motor, and calculating a temperature of each constituent element using the thermal equivalent circuit.

System of calculating temperature using thermal equivalent circuit

A driving motor includes a rotor body that is rotatably installed inside a stator with a predetermined void therebetween and has a rotor coil wound on multiple rotator teeth. The rotor body includes: i) multiple wedges inserted between the rotor teeth of the rotor body in an axial direction and supporting the rotor coil; and ii) end coil covers mounted on both axial ends of the rotor body, respectively and connected with the wedge members. Each wedge member includes a wedge body disposed between the rotor teeth in the axial direction and connected with the end coil covers. Each wedge body is made of a metallic material having a conductivity and has an insulating layer formed on an outer surface other than both cross sections connected to the end coil covers. The end coil covers are also made of a metallic material having a conductivity and are connected with the ends of each wedge body.

Driving motor

A rotor of a wound rotor synchronous motor is spaced apart from an interior diameter surface of a stator by a predetermined gap, and includes a plurality of teeth wound by a rotor coil, and circumferentially spaced apart from each other by a distance, where a slot is formed between the teeth, each tooth is formed with a shoe facing an interior diameter surface of the stator, and both ends of the shoe protrude in a direction of both ends of an adjacent shoe, where each tooth includes a first part corresponding to a winding body of the tooth and a second part extending in the direction of both ends of the adjacent shoe from both sides of the first part.

Rotor of wound rotor synchronous motor

A rotor of a wound rotor synchronous motor includes: a rotor body coupled to a rotation shaft and around which a rotor coil is wound; and a slip ring module mounted on one portion of the rotation shaft, the slip ring module comprising a brush contact portion configured to contact a brush, a terminal mounting portion connected to the brush contact portion, and a fusing terminal mounted at an exterior circumferential surface of the terminal mounting portion and connected to the rotor coil.

Rotor for wound rotor synchronous motor

An apparatus and method for controlling an electric vehicle are provided. The apparatus includes a battery that is configured to charge electrical energy and a motor that is configured to generate a driving torque from electrical energy charged in the battery. A controller is configured to determine a driving range of the vehicle, perform maximum efficiency control in which efficiency of the motor is maximized when the driving range of the vehicle is a main driving range, and perform minimum torque ripple control in which torque ripple of the motor is minimized when the driving range of the vehicle is a supplementary driving range.

Growing community of inventors

Gwangmyeong-si, South Korea

WoongChan Chae