Abstract: ADC-DC converter system is provided. The DC-DC converter system includes a transformer that is disposed between an input terminal and an output terminal, and a primary side switching circuit unit that converts voltage of the input terminal to AC voltage and provide the converted AC voltage to a primary side coil of the transformer. A secondary side switching circuit unit includes a plurality of switches that convert voltage induced in a secondary side coil of the transformer to DC voltage and provide the converted DC voltage to the output terminal. A controller is configured to adjust a short-circuit/open state of the plurality of switches based on voltages at both ends of each of the plurality of switches.

Abstract: A system for protecting the output terminal of the on-board-charger (OBC) includes: the OBC configured to apply an output voltage equal to a voltage of a battery to the battery to perform charging of the battery, an output terminal protection apparatus configured to compare a voltage difference between the output voltage of the OBC and the voltage of the battery with a threshold, and an OBC relay configured to connect the OBC to the battery when the voltage difference is less than the threshold. The OBC performs the charging of the battery after the OBC is connected to the battery.

Abstract: A power control system for a hybrid vehicle is provided. The system includes a rechargeable battery, a first motor that is connected to a driving wheel of the vehicle, and a second motor that is connected to the driving wheel of the vehicle. A first inverter is connected to the first motor and a second inverter is connected to the second motor. A converter has a first side connected to the battery and a second side connected to the first inverter. A neutral switch is connected between the first side of the converter and a neutral point of the first motor. A controller executes an on/off of the switch based on whether the first motor is operated and required power of the vehicle.

Abstract: A dual inverter control method is capable of improving power efficiency of an inverter and a motor by controlling a dual inverter through 6-step control to apply a voltage to the motor in a motor driving system using the dual inverter. The dual inverter control method for controlling first and second inverters having output terminals commonly connected to a motor includes comparing all voltage commands for driving the motor with the magnitude of a DC voltage commonly applied to the first and second inverters; and generating a first voltage command with respect to an output of the first inverter and a second voltage command with respect to an output of the second inverter by selectively applying high gain over voltage modulation (HOVM) depending on a comparison result.

Abstract: Disclosed herein is a charging system using a wound rotor synchronous motor (WRSM), capable of reducing volume, weight, and cost of a vehicle increased due to an on-board charging circuit and increasing a battery charge capacity. The charging system using a wound rotor synchronous motor (WRSM) includes an inverter converting power of a battery into alternating current (AC) powers having a plurality of different phases, a WRSM having a plurality of stator coils each receiving AC power of a different phase and a field coil forming mutual inductance with the plurality of stator coils and installed in a rotor to form a magnetic flux using power of the battery, and a controller controlling the battery side and the field coil side are insulated from each other in a charge mode in which grid power is applied to the field coil side of the WRSM.

Abstract: Disclosed herein is a charging system using a wound rotor synchronous motor, capable of increasing a battery charging capacity while reducing the volume, weight, and/or cost of a vehicle increased due to an on-vehicle charging circuit. The charging system includes an inverter converting a DC output of a battery into a plurality of AC signals having different phases, a wound rotor synchronous motor having a plurality of stator coils, to which the AC signals having different phases are respectively input, and a field coil forming a mutual inductance with the stator coils, the field coil being installed in a rotor to form a magnetic flux using the DC output of the battery, and a controller allowing the battery and the field coil to be insulated from each other in a charge mode in which electricity from a grid is applied to the field coil of the wound rotor synchronous motor.

Abstract: An apparatus for reducing vibrations of a two-cylinder engine for a hybrid electric vehicle includes a reference signal generator for generating a first reference signal and a first reference phase, a speed calculator for calculating a speed of the motor based on the position of the motor, a vibration extractor for extracting a first vibration signal based on the speed of the motor, a variable filter, a filter coefficient updater, a phase calculator, a phase shift compensator, a synchronization signal generator for generating a first synchronization signal synchronized with the first vibration signal based on a first reference phase transferred from the reference signal generator, the second phase difference transferred from the phase calculator and the first compensation value transferred from the phase shift compensator, an inverse phase signal generator, and a torque generator for generating a final command torque based on the first inverse phase signal.

Abstract: A system and method for controlling an on-board battery charger of an eco-friendly vehicle are provided. In the method, when instantaneous interruption of electric power occurs in an AC input power source, a DC-DC controller adjusts an output current instruction to be limited to the minimum charging power, and a power factor corrector (PFC) controller outputs a voltage instruction to a first capacitor (DC link capacitor) connected to an output terminal of the PFC controller to be updated to zero (0) or an actual value of the DC link capacitor. When the AC input power source is then restored, the PFC controller outputs the voltage instruction to the first capacitor to be increased to the existing voltage instruction with a predetermined slope, to smoothly perform the charging operation of the on-board battery charger without pause.

Abstract: A power supply apparatus of an eco-friendly vehicle is provided. The power supply apparatus includes a battery that is configured to supply electric power for driving a vehicle and an inverter that is configured to drive a motor of the vehicle. A power converter is configured to correct a power factor of AC power applied from exterior, or to supply power of the battery to the inverter. A DC converter is configured to convert a power output from the power converter to a charging power for charging the battery. A first relay is configured to turn a power transmission between the battery and the power converter on/off and a second relay is configured to turn the power transmission between the battery and the power converter on/off.

Abstract: A method for measuring an offset of a resolver is arranged so as to frequently measure and correct the offset of the resolver by actively performing zero current control of a motor. The method includes steps of: determining whether a torque command value of the motor and a magnetic flux value or reverse magnetic flux value of the motor respectively fall within a first range and a second range, which have been set in advance; controlling the motor to perform zero current control for a preset time period when the torque command value of the motor falls within the first range and the magnetic flux value or reverse magnetic flux value of the motor falls within the second range; and measuring the offset of the resolver for the preset time period.

Abstract: A charging control method for an electric vehicle is provided. The method uses a vehicle charging device that includes a power factor correction circuit (PFC) and a DC/DC converter. The method includes receiving, by a PFC controller, a control pilot (CP) signal from an external charging device and restricting by the PFC controller an allowable current value derived by analyzing the CP signal to a maximum current value that is to be applied to the PFC. The PFC controller then derives an output current command value of the DC/DC converter by applying an output value of a voltage controller of the PFC to the allowable current value. A DC/DC converter controller then charges a battery using the output current command value of the DC/DC converter.

Abstract: A power control system for a hybrid vehicle is provided. The system includes a high-voltage battery that is capable of being charged or discharged, a first motor and a second motor, a first inverter connected to the first motor, and a second inverter connected to the second motor. Additionally, a converter has a first side connected to the battery and a second side connected in parallel to the first inverter and the second inverter and a diode is connected in parallel to both sides of the converter. A controller is configured to operate the converter and the first and second inverters to cause electric power of the high-voltage battery to be bypassed via the diode and directly supplied to the first inverter or the second inverter.

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 system for controlling a motor of a hybrid vehicle determines a current of a first axis and a current of a second axis according to a driving condition, converts the currents of the first and second axes into a 3-phase AC current, and drives the motor by applying the 3-phase AC current to the motor, and includes: a revised temperature calculation module that calculates a revised temperature in order to compensate a torque error according to counter electromotive force dispersion of the motor; and a current determination module that determines the currents of the first and second axes by substituting the corrected temperature to a current map for each temperature and by using a demand torque at a present driving condition, a present speed of the motor, and a maximum counter magnetic flux of the motor.

Abstract: A multi-phase interleaved converter includes n sub-circuits of phases, a current controller and a balancing controller. The n sub-circuits of phases have inputs connected in parallel and outputs connected in parallel in order to convert a direct current (DC) or alternating current (AC) input voltage of one level into a DC or AC output voltage of another level. The current controller receives a current control command and a phase current value of a particular sub-circuit of a particular phase among the n sub-circuits of the respective phases to output a control signal for controlling the particular sub-circuit of the particular phase. The balancing controller receives phase current values of the n sub-circuits of the respective phases and receives a control signal output from the current controller to adjust the duty ratios of control signals applied to the other sub-circuits.

Abstract: A power control system for a hybrid vehicle is provided. The system includes a rechargeable battery, a first motor that is connected to a driving wheel of the vehicle, and a second motor that is connected to the driving wheel of the vehicle. A first inverter is connected to the first motor and a second inverter is connected to the second motor. A converter has a first side connected to the battery and a second side connected to the first inverter. A neutral switch is connected between the first side of the converter and a neutral point of the first motor. A controller executes an on/off of the switch based on whether the first motor is operated and required power of the vehicle.

Abstract: A method for measuring an offset of a resolver is arranged so as to frequently measure and correct the offset of the resolver by actively performing zero current control of a motor. The method includes steps of: determining whether a torque command value of the motor and a magnetic flux value or reverse magnetic flux value of the motor respectively fall within a first range and a second range, which have been set in advance; controlling the motor to perform zero current control for a preset time period when the torque command value of the motor falls within the first range and the magnetic flux value or reverse magnetic flux value of the motor falls within the second range; and measuring the offset of the resolver for the preset time period.

Abstract: A battery charging system using a charger and a driving control method of the charger thereof are provided which increase a driving time of the charger when an instantaneous power failure of charger input voltage occurs in the battery charging system. Thus, a sufficient time is secured for obtaining and processing more precise information regarding a driving state of the charger and the capacity of a capacitor is decreased compared to the related art.

Abstract: A device and a method of 6-step controlling of an inverter of a motor driving system are provided. The device and method and apply a voltage to a motor by adopting a 6-step control scheme capable of maximally using an input voltage of the inverter to improve output efficiency of the inverter and the motor and thus improve fuel efficiency of an environmentally friendly vehicle.

Abstract: A system for protecting the output terminal of the on-board-charger (OBC) includes: the OBC configured to apply an output voltage equal to a voltage of a battery to the battery to perform charging of the battery, an output terminal protection apparatus configured to compare a voltage difference between the output voltage of the OBC and the voltage of the battery with a threshold, and an OBC relay configured to connect the OBC to the battery when the voltage difference is less than the threshold. The OBC performs the charging of the battery after the OBC is connected to the battery.