Hyundai Motor Company

Kia Motors Corporation

Sanghoon Moon

Hyoungjun Cho

Jung Shik Kim

WoongChan Chae

YoungJin Shin

Kyoungbum Kim

Yeonho Kim

Kyungsoo Park

Sangjin Park

Ki Nam Kim

SangHwa Do

Woong Chan Chae

Yong Jae Lee

Myunggyu Kim

Hyun Su Kim

Dongyeon Han

Suhyun Bae

Yongsung Jang

Jinhun Lee

Nyeonhan Hong

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 drive motor for a vehicle includes: a stator and a rotor, in which the stator includes: stator teeth which are disposed between multiple slots, respectively, the multiple slots being formed at predetermined intervals in a circumferential direction corresponding to an outer circumferential surface of the rotor, and have a blocking portion which protrudes toward one of the slots disposed at both sides, the blocking portion formed at one side of an inner circumferential surface of each of the stator teeth facing the rotor, and a groove which is formed radially outward at an opposite side of the inner circumferential surface of each of the stator teeth; and opening sections each of which is in communication with the slot and formed between the blocking portion and the opposite side of the inner circumferential surface of the stator tooth adjacent to the blocking portion, and the slot is opened radially through the opening section.

Drive motor for vehicle

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 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

An interior permanent magnet synchronous motor includes a stator a rotor disposed with a space between the stator and the rotor, and a plurality of permanent magnets embedded in the rotor. In particular, a plurality of slits are formed in one side surface of the permanent magnet in a rotation direction of the rotor at equal intervals.

Interior permanent magnet synchronous motor

A rotor of a wound rotor synchronous motor is manufactured by forming a rotor core using a plurality of core blocks, and fitting bobbins with a coil wound onto the core blocks. In particular, the core blocks are connected such that tops of the bobbins extend from bobbin bodies and are connected with tops of other bobbins fitted on the adjacent core blocks. Additionally, a molding material may be injected into spaces between the core blocks.

Bobbin and rotor of wound rotor synchronous motor using the same

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.

Apparatus and method for controlling electric vehicle

A rotor fixing unit for a drive motor serves which fixes a rotor core to a shaft is provided. In particular, a plurality of keyway portions, which includes first keyways formed in an axial direction of the shaft, and second keyways connected to the first keyways in a rotation direction, are formed in an outer circumferential surface of the shaft. Additionally, a plurality of key protrusions, which are each coupled to each of the keyway portions, respectively, are formed on an inner circumferential surface of the rotor core, and fixing members for fixing the shaft and the rotor core are then inserted into the first keyways to fix the key protrusions in the second keyways.

Rotor fixing unit for drive motor

A rotor of an interior permanent magnet motor includes a rotor core configured to form a body of the rotor. An upper permanent magnet group is configured to be inserted into the rotor core to form a magnetic pole. A lower permanent magnet group is configured to be inserted into the rotor core below the upper permanent magnet group to form a two-layered structure with the upper permanent magnet group. Each of the upper and lower permanent magnet groups may include two V-shaped permanent magnets. A polar arc angle formed by the two permanent magnets of the upper permanent magnet group may be different from a polar arc angle formed by the permanent magnets of the lower permanent magnet group.

Growing community of inventors

Gyeonggi-do, South Korea

Sanghoon Moon