Abstract: An oil circulation type motor may include an oil circulating device having cooling oil chambers which are formed along the circumference of a stator core and through which cooling oil pumped by an oil pump is introduced and discharged, wherein cooling oil is introduced into the cooling oil chambers, wets a stator coil wound around the stator core, and is then discharged from the cooling oil chambers.

Abstract: A power system having two motors includes: a first motor transmitting power to an output shaft of an engine or receiving power from the output shaft of the engine; a first clutch selectively connecting a first rotor of the first motor to the output shaft and mounted on a first power transmitting member that operably connects the output shaft and the first rotor of the first motor; a second motor outputting power to an input shaft of a transmission; and a second clutch selectively connecting the output shaft to a second rotor of the second motor and mounted on a second power transmitting member that operably connects the output shaft and the second rotor of the second motor.

Abstract: A charging device according to an exemplary embodiment of the present invention may include: a battery adapted and configured to store a DC voltage, first and second motors adapted and configured to operate as a motor or a generator, first and second inverters adapted and configured to operate the first and second motors, a voltage transformer adapted and configured to boost the DC voltage of the battery to supply it to the first and second inverters and boosts the DC voltage of the inverter to supply it to the battery, and a charging controller adapted and configured to operate the first and second inverters as a booster or operate the voltage transformer as a buck booster according to a voltage that is input through a neutral point of the first and second motors and the voltage of the battery.

Abstract: An oil circulation type motor may include an oil circulating device having cooling oil chambers which are formed along the circumference of a stator core and through which cooling oil pumped by an oil pump is introduced and discharged, wherein cooling oil is introduced into the cooling oil chambers, wets a stator coil wound around the stator core, and is then discharged from the cooling oil chambers.

Abstract: A power system having two motors includes: a first motor transmitting power to an output shaft of an engine or receiving power from the output shaft of the engine; a first clutch selectively connecting a first rotor of the first motor to the output shaft and mounted on a first power transmitting member that operably connects the output shaft and the first rotor of the first motor; a second motor outputting power to an input shaft of a transmission; and a second clutch selectively connecting the output shaft to a second rotor of the second motor and mounted on a second power transmitting member that operably connects the output shaft and the second rotor of the second motor.

Abstract: A method of diagnosing a magnetization fault of a permanent magnet motor is provided. The method includes calculating a resolver offset value for offset correction of a resolver mounted at the motor, calculating a correction deviation, namely, a difference value between the calculated resolver offset value and a predetermined reference value to compare the calculated correction deviation to an allowable error, comparing a difference value between the calculated correction deviation and a predetermined phase difference value of reverse magnetization of the permanent magnet to the allowable error when the calculated correction deviation is more than the allowable error, and determining that the motor is in a reversely magnetized state when the difference value between the calculated correction deviation and the predetermined phase difference value of reverse magnetization of the permanent magnet is equal to or less than the allowable error.

Abstract: A charging device according to an exemplary embodiment of the present invention may include: a battery adapted and configured to store a DC voltage, first and second motors adapted and configured to operate as a motor or a generator, first and second inverters adapted and configured to operate the first and second motors, a voltage transformer adapted and configured to boost the DC voltage of the battery to supply it to the first and second inverters and boosts the DC voltage of the inverter to supply it to the battery, and a charging controller adapted and configured to operate the first and second inverters as a booster or operate the voltage transformer as a buck booster according to a voltage that is input through a neutral point of the first and second motors and the voltage of the battery.

Abstract: A fail-safe method and apparatus for high voltage parts in a hybrid vehicle is provided. In the fail-safe method, it is determined whether or not a high voltage main relay is turned off. Here, when the high voltage main relay is turned off, a voltage is charged into a direct current (DC) link using a counter electromotive force generated in a motor generator linked with a revolution of an engine. Voltage control is performed such that the voltage of the DC link is uniformly maintained using an inverter for the motor generator.

Abstract: A vibration reduction control apparatus of a hybrid vehicle having a first motor connected to a first side of an engine and a second motor connected to a second side of the engine through an engine clutch, may include a hybrid controller, an engine controller configured to control the engine, a first motor controller configured to control the first motor, a second motor controller configured to control the second motor, and an anti-spring controller configured between the first motor controller and the second motor controller and control torques of the first and second motors using frequencies of the first motor and the second motor, respectively, wherein the hybrid controller is configured to selectively transmit a torque signal of the engine, a torque signal of the first motor, and a torque signal of the second motor to the engine controller, the first motor controller, and the second motor controller, respectively.

Abstract: A charging device according to an exemplary embodiment of the present invention may include: a battery adapted and configured to store a DC voltage, first and second motors adapted and configured to operate as a motor or a generator, first and second inverters adapted and configured to operate the first and second motors, a voltage transformer adapted and configured to boost the DC voltage of the battery to supply it to the first and second inverters and boosts the DC voltage of the inverter to supply it to the battery, and a charging controller adapted and configured to operate the first and second inverters as a booster or operate the voltage transformer as a buck booster according to a voltage that is input through a neutral point of the first and second motors and the voltage of the battery.

Abstract: A method of estimating a temperature of a permanent magnet in a motor that is capable of precisely estimating the temperature of a permanent magnet included in a motor and of preventing demagnetization of the magnet is provided. Specifically, the method of estimating a temperature of a permanent magnet in a motor is capable of deriving heat transfer coefficients through an analysis of an interrelation between a variation of permanent magnet temperature and a rotor loss per motor operating condition based on an actually measured value and constructing a heat model of the permanent magnet using the same to estimate the temperature of the permanent magnet, and accordingly, it is possible to precisely estimate real-time temperature of the permanent magnet based on the operational condition of the motor.

Abstract: The present invention relates to devices for controlling torque intervention for reducing input torque of a transmission at the time of an upshift operation of a hybrid vehicle, and more particularly, to devices and methods for controlling torque intervention of a hybrid vehicle, which selectively perform the torque intervention of a motor of the hybrid vehicle or the torque intervention of the motor and an engine. Device and methods for controlling torque intervention of a hybrid vehicle may receive an upshift command from a driver in a hybrid traveling mode, compare an amount of requested torque intervention according to the upshift command with an amount of performing torque intervention of a motor, and selectively perform the torque intervention of the motor or the torque intervention of the motor and an engine.

Abstract: A method of forcibly charging a high-voltage battery using a motor and a Hybrid Starter Generator (HSG) is provided. The method forcibly charges the high-voltage battery with maximum charging power using the motor and the HSG simultaneously. Particularly, the method includes calculating maximum chargeable power for the high-voltage battery using three dimensional (3D) maximum charging power maps of the motor and the HSG and adjusting maximum charging power using energy integration during forced charging using the motor and the HSG simultaneously. Additionally, excessive temperature prevention logics are applied for protecting the motor and the HSG from an excessive temperature in a forced charging mode.

Abstract: A vibration reduction control apparatus of a hybrid vehicle having a first motor connected to a first side of an engine and a second motor connected to a second side of the engine through an engine clutch, may include a hybrid controller, an engine controller configured to control the engine, a first motor controller configured to control the first motor, a second motor controller configured to control the second motor, and an anti-spring controller configured between the first motor controller and the second motor controller and control torques of the first and second motors using frequencies of the first motor and the second motor, respectively, wherein the hybrid controller is configured to selectively transmit a torque signal of the engine, a torque signal of the first motor, and a torque signal of the second motor to the engine controller, the first motor controller, and the second motor controller, respectively.

Abstract: An offset compensation method of a current sensor is provided for determining whether an offset compensation of the current sensor is abnormal, and a motor driving system includes the current sensor. The offset compensation method includes: compensating for an offset of the current sensor, and determining whether the offset compensation of the current sensor is abnormal.

Abstract: The present disclosure provides a method of forcibly charging a high-voltage battery using a motor and a Hybrid Starter Generator (HSG) which is capable of forcibly charging the high-voltage battery with maximum charging power using the motor and the HSG simultaneously. The method does so by calculating maximum chargeable power for the high-voltage battery using three dimensional (3D) maximum charging power maps of the motor and the HSG, adjusting maximum charging power using energy integration during forced charging using the motor and the HSG simultaneously, and applying excessive temperature prevention logics for protecting the motor and the HSG from an excessive temperature in a forced charging mode.

Abstract: A charging device according to an exemplary embodiment of the present invention may include: a battery adapted and configured to store a DC voltage, first and second motors adapted and configured to operate as a motor or a generator, first and second inverters adapted and configured to operate the first and second motors, a voltage transformer adapted and configured to boost the DC voltage of the battery to supply it to the first and second inverters and boosts the DC voltage of the inverter to supply it to the battery, and a charging controller adapted and configured to operate the first and second inverters as a booster or operate the voltage transformer as a buck booster according to a voltage that is input through a neutral point of the first and second motors and the voltage of the battery.

Abstract: A motor control system and method are provided for a vehicle that reduces torque ripples due to motor system characteristics while the vehicle is running at ultra-low speed in an electric vehicle running mode. The system includes a current command generator that generates a current command based on a torque command, a motor speed, and a reference voltage. A current controller generates a voltage command based on the current command. A coordinate transformer transforms the voltage command into a 3-phase voltage command by a coordinate transformation and a PWM (pulse width modulation) signal generator generates a switch signal based on the 3-phase voltage command. A PWM inverter generates a 3-phase driving current to drive a motor based on the switch signal and a current control ripple compensator applies a reverse phase harmonic wave to the current controller to reduce a harmonic wave caused by errors generated from the current controller.

Abstract: A control method of electric vehicle according to an exemplary embodiment of the present invention may include a battery supplying electricity, a motor receiving electricity from the battery and generating power, and a controller controlling the battery and the motor, wherein the controller executes instructions for: detecting a torque command, a motor speed, and a motor current; calculating a motor voltage from the motor current; determining whether voltage utilization according to a speed range of the motor is higher than a predetermined value; generating an operating point correcting function according to the motor speed when the voltage utilization is not higher than the predetermined value; calculating a current command according to the motor speed from the operating point correcting function; and outputting the calculated current command.

Abstract: Disclosed is a system and method of controlling an inverter to reduce noise in an eco-friendly vehicle. In the method, at least one of a current motor torque and a current motor speed is monitored in real-time. It is determined whether or not the at least one of the current motor torque and the current motor speed corresponds to a noise occurrence range set to a current switching frequency. A changed switching frequency value corresponding to the at least one of the current motor torque and the current motor speed is calculated when the at least one of the current motor torque and the current motor speed corresponds to the noise occurrence range. A PWM signal is generated using the changed switching frequency value to control an inverter.