Abstract: An embodiment converter includes a magnetic material, a first circuit including a first winding surrounding the magnetic material and a clamp circuit configured to reset a power conversion operation, the first circuit being configured to convert power received from a first input voltage source to provide the converted power to a load, and a second circuit including a second winding surrounding the magnetic material, the second circuit being configured to convert power received from a second input voltage source to provide the converted power to the load and to perform the power conversion operation being reset by the clamp circuit.

Abstract: An embodiment solar cell system includes a first photovoltaic (PV) module and a second PV module connected in series with each other, a differential power processing (DPP) converter configured to convert electricity generated by the first PV module and the second PV module, using a magnetic material having a multi-winding structure, and to provide the converted electricity to a battery, and a control signal generator configured to generate a control signal that controls a main switch for controlling an input-side current path and an output-side current path of the DPP converter, and to adjust a pulse width of the control signal such that a magnetizing current of the DPP converter becomes substantially zero.

Abstract: A solar charging system for the vehicle includes a first photovoltaic (PV) module, a second PV module serially connected to the first PV module, and a differential power processing (DPP) transformer that converts power generated from the first PV module and the second PV module by using a magnetic body having a multi-winding structure.

Abstract: A vehicle charger includes a power factor correction converter configured to correct the power factor of alternating current (AC) power is integrated with an input terminal of a DC-DC converter configured to generate a direct-current (DC) voltage having a magnitude required for an energy storage device in the vehicle, thereby reducing the size of the vehicle charger, reducing the number of required elements, and allowing the vehicle charger to have high efficiency; and a method for controlling the same.

Abstract: A method for controlling charge or discharge of a battery in a battery system including a DC converter down-converting an input voltage thereof and outputting an output, a battery connected to an output terminal of the DC converter, and an electric load connected to the output terminal of the DC converter and supplied with electric power from at least one of the DC converter and the battery, may include measuring a temperature of the battery, first controlling, by a controller, an output of the DC converter so that a charging current supplied to the battery from the DC converter becomes a preset maximum value, when the temperature of the battery is lower than a first predetermined temperature, and second controlling, by the controller, the output of the DC converter such that a current of the battery is substantially equal to zero, when the temperature of the battery is higher than a second predetermined temperature which is higher than the first predetermined temperature.

Abstract: A system for controlling a low voltage DC-DC converter for a vehicle is provided. The system includes a low voltage DC-DC converter that converts a voltage of a main battery into a low voltage and outputs the same. An electric device is connected to an output terminal of the low voltage DC-DC converter and a first relay is connected to the output terminal of the low voltage DC-DC converter at a first terminal thereof. An auxiliary battery is connected to a second terminal of the first relay and a controller turns off the first relay and operates the low voltage DC-DC converter to output a minimum voltage capable of operating the electric device when the auxiliary battery is charged to a preset reference value or more while the main battery is being charged.

Abstract: A four wheel drive vehicle includes: main driving wheels and auxiliary driving wheels; a first driving motor that provides power to the main driving wheels; a second driving motor that provides power to the auxiliary driving wheels; a battery that stores electrical energy; an inverter that converts and provides the electrical energy stored in the battery to the first driving motor; and a bidirectional power converter that generates charging electric power for charging the battery by converting power supplied from the outside of the vehicle and converts and provides the electrical energy stored in the battery to the second driving motor.

Abstract: A periodic supplementary charge method of an auxiliary battery of a vehicle may include: estimating, by a controller, an available capacity of the auxiliary battery; measuring, by the controller, dark currents of the auxiliary battery; determining, by the controller, a supplementary charging execution time based on the estimated available capacity of the auxiliary battery; determining, by the controller, a supplementary charging execution period based on the estimated available capacity and information about the measured dark currents; and supplementarily charging, by the controller, the auxiliary battery by providing a charging current to the auxiliary battery based on the determined supplementary charging execution time and the determined supplementary charging execution period.

Abstract: A fault diagnosis system of a power converter for an electric vehicle includes a power supply supplied with power and converting the supplied power to provide the power to a motor, a battery, and an electronic device of a vehicle, a power supply supplied with power and converting the supplied power to provide the power to a motor, a battery, and an electronic device of a vehicle, a controller connected to the power supply by a connector and controlling charging and discharging of the battery, and operations of the motor and the electronic device of the vehicle by using the power provided from the power supply, and a fault diagnosis circuit connected between the power supply and the controller and diagnosing whether the connector which connects the power supply with the controller malfunctions.

Abstract: A vehicle charger includes a power factor correction converter configured to correct the power factor of alternating current (AC) power is integrated with an input terminal of a DC-DC converter configured to generate a direct-current (DC) voltage having a magnitude required for an energy storage device in the vehicle, thereby reducing the size of the vehicle charger, reducing the number of required elements, and allowing the vehicle charger to have high efficiency; and a method for controlling the same.

Abstract: A four wheel drive vehicle includes: main driving wheels and auxiliary driving wheels; a first driving motor that provides power to the main driving wheels; a second driving motor that provides power to the auxiliary driving wheels; a battery that stores electrical energy; an inverter that converts and provides the electrical energy stored in the battery to the first driving motor; and a bidirectional power converter that generates charging electric power for charging the battery by converting power supplied from the outside of the vehicle and converts and provides the electrical energy stored in the battery to the second driving motor.

Abstract: A system for controlling a low voltage DC-DC converter for a vehicle is provided. The system includes a low voltage DC-DC converter that converts a voltage of a main battery into a low voltage and outputs the same. An electric device is connected to an output terminal of the low voltage DC-DC converter and a first relay is connected to the output terminal of the low voltage DC-DC converter at a first terminal thereof. An auxiliary battery is connected to a second terminal of the first relay and a controller turns off the first relay and operates the low voltage DC-DC converter to output a minimum voltage capable of operating the electric device when the auxiliary battery is charged to a preset reference value or more while the main battery is being charged.

Abstract: A method for controlling charge or discharge of a battery in a battery system including a DC converter down-converting an input voltage thereof and outputting an output, a battery connected to an output terminal of the DC converter, and an electric load connected to the output terminal of the DC converter and supplied with electric power from at least one of the DC converter and the battery, may include measuring a temperature of the battery, first controlling, by a controller, an output of the DC converter so that a charging current supplied to the battery from the DC converter becomes a preset maximum value, when the temperature of the battery is lower than a first predetermined temperature, and second controlling, by the controller, the output of the DC converter such that a current of the battery is substantially equal to zero, when the temperature of the battery is higher than a second predetermined temperature which is higher than the first predetermined temperature.

Abstract: A charging system with a sensor diagnosis function is provided. The system includes an AC input voltage sensor that detects a voltage of an input end with an AC power applied thereto and a resistor that is connected to the input end. A power factor correction circuit unit adjusts and outputs a power factor of AC power applied through the resistor. An output voltage of the power factor correction circuit unit is applied to a capacity of the system. A controller then diagnoses the AC input voltage sensor based on a value of current passing through the resistor, a value of a voltage of the capacitor, and a resistance value of the resistor.

Abstract: A periodic supplementary charge method of an auxiliary battery of a vehicle may include: estimating, by a controller, an available capacity of the auxiliary battery; measuring, by the controller, dark currents of the auxiliary battery; determining, by the controller, a supplementary charging execution time based on the estimated available capacity of the auxiliary battery; determining, by the controller, a supplementary charging execution period based on the estimated available capacity and information about the measured dark currents; and supplementarily charging, by the controller, the auxiliary battery by providing a charging current to the auxiliary battery based on the determined supplementary charging execution time and the determined supplementary charging execution period.

Abstract: A method of controlling a vehicle during charging is applied to the vehicle that includes a charger converting external alternating current power into direct current power, and a first battery and an electric load connected to a terminal to which the direct current power converted and output by the charger. The method includes calculating a maximum outputtable power capable of being output by the charger when an operation of the charger is initiated; and calculating a maximum allowable load power capable of being applied to drive the electric load on the basis of the maximum outputtable power, a minimum charging power required to charge the first battery, and a minimum load-requesting power required to operate the electric load.

Abstract: A control system of a low voltage DC-DC converter is provided. The system includes a low voltage DC-DC converter unit that has a power semiconductor element and converts power supplied from a high voltage battery of a vehicle into power of low voltage. A switching frequency change unit changes a switching frequency of the power semiconductor element and a microcomputer generates a final PWM signal based on an input voltage value input from the high voltage battery and an output voltage value of the switching frequency change unit to apply a maximum duty command voltage to a PWM controller. The PWM controller applies PWM voltage to the power semiconductor element to thus operate the power semiconductor element at less than a maximum duty based on the maximum duty command voltage applied from the microcomputer.

Abstract: A fault diagnosis system of a power converter for an electric vehicle includes a power supply supplied with power and converting the supplied power to provide the power to a motor, a battery, and an electronic device of a vehicle, a power supply supplied with power and converting the supplied power to provide the power to a motor, a battery, and an electronic device of a vehicle, a controller connected to the power supply by a connector and controlling charging and discharging of the battery, and operations of the motor and the electronic device of the vehicle by using the power provided from the power supply, and a fault diagnosis circuit connected between the power supply and the controller and diagnosing whether the connector which connects the power supply with the controller malfunctions.

Abstract: A method of controlling a vehicle during charging is applied to the vehicle that includes a charger converting external alternating current power into direct current power, and a first battery and an electric load connected to a terminal to which the direct current power converted and output by the charger. The method includes calculating a maximum outputtable power capable of being output by the charger when an operation of the charger is initiated; and calculating a maximum allowable load power capable of being applied to drive the electric load on the basis of the maximum outputtable power, a minimum charging power required to charge the first battery, and a minimum load-requesting power required to operate the electric load.

Abstract: A charging system with a sensor diagnosis function is provided. The system includes an AC input voltage sensor that detects a voltage of an input end with an AC power applied thereto and a resistor that is connected to the input end. A power factor correction circuit unit adjusts and outputs a power factor of AC power applied through the resistor. An output voltage of the power factor correction circuit unit is applied to a capacity of the system. A controller then diagnoses the AC input voltage sensor based on a value of current passing through the resistor, a value of a voltage of the capacitor, and a resistance value of the resistor.