Abstract: A planar transformer is disclosed. The planar transformer includes a first core, a second core, a third core, and a fourth core, which are sequentially disposed; a primary coil unit having multiple primary substrates through which the first to fourth cores penetrate and on which primary coil patterns are formed such that magnetic flux is generated in a first direction in the first and fourth cores and in a second direction in the second and third cores; and a secondary coil unit having multiple secondary substrates through which the first to fourth cores penetrate and on which secondary coil patterns are formed, the secondary coil patterns formed on a periphery of the first to fourth cores such that current induced by the magnetic flux flowing in the first to fourth cores flows therein, wherein the multiple primary and secondary substrates form a multi-layer structure.

Abstract: A power conversion apparatus and method are provided. The apparatus includes a main battery and a power converter configured to execute a high power conversion mode that generates a high power and a low power conversion mode that generates a low power using an input power from the main battery. Additionally, an auxiliary battery is configured to receive and charge the low power and an inverter is configured to convert the high power to a driving power for driving a motor.

Abstract: A power conversion system for vehicles is provided. The system includes a first energy storage device and a charging device with a rectification circuit for rectifying AC power to generate a DC link voltage. A DC-DC converter converts the level of the DC link voltage to generate a charging voltage of the first energy storage device. A low voltage DC-DC converter selectively down-converts one of the voltage of the first energy storage device and the DC link voltage to output a low voltage having a predetermined level. The low voltage DC-DC converter selectively converts one of the voltage of the first energy storage device and the DC link voltage into the low voltage based on whether the first energy storage device is charged according to input of the AC power.

Abstract: A low voltage DC-DC converter for a vehicle includes: a switching circuit including a plurality of capacitors and a plurality of switches and converting a high voltage output from a high voltage battery into an AC voltage; a transformer converting the AC voltage output from the switching circuit into a low voltage; a current sensor measuring a current value output from the transformer; and a controller comparing the current value measured by the current sensor with a reference value to determine whether a current mode is a continuous current mode or a discontinuous current mode, and controlling one of the plurality of switches to be turned on or off as the determination result.

Abstract: A low voltage DC-DC converter for a vehicle includes: a switching circuit including a plurality of capacitors and a plurality of switches and converting a high voltage output from a high voltage battery into an AC voltage; a transformer converting the AC voltage output from the switching circuit into a low voltage; a current sensor measuring a current value output from the transformer; and a controller comparing the current value measured by the current sensor with a reference value to determine whether a current mode is a continuous current mode or a discontinuous current mode, and controlling one of the plurality of switches to be turned on or off as the determination result.

Abstract: The present invention provides a power manufacturing apparatus capable of preventing particle growth when fine powder is formed through a fluid, the apparatus comprising: a molten steel providing part for providing molten steel; and a cooling fluid spraying part which is arranged at a lower part of the molten steel providing part and sprays a cooling fluid on the molten steel in order to pulverize the molten steel provided by the molten steel providing part, wherein the cooling fluid spraying part forms a first flow for cooling the molten steel so as to pulverize the molten steel and a second flow for forming a descending air current in the molten steel.

Abstract: The present disclosure provides a converter controlling apparatus including a plurality of switching devices capable of controlling a pulse width modulation (PWM), the converter controlling apparatus including: an efficiency determiner configured to variably change resistance of a gate terminal, wherein a PWM signal for controlling the PWM of the switching device is applied to a gate terminal based on an amount of current flowing through the converter.

Abstract: Disclosed herein is a wireless charging device including a heat radiation panel having a radiation plate and a radiation fin protruding from an upper surface of the radiation plate; a core section arranged in a region other than the protruding radiation fin, the core section being made of a material having high permeability; and a coil section arranged on the core section so as to come into contact with the protruding radiation fin.

Abstract: The present disclosure provides a converter controlling apparatus including a plurality of switching devices capable of controlling a pulse width modulation (PWM), the converter controlling apparatus including: an efficiency determiner configured to variably change resistance of a gate terminal, wherein a PWM signal for controlling the PWM of the switching device is applied to a gate terminal based on an amount of current flowing through the converter.

Abstract: A wireless charging system of a vehicle includes: a transmitting coil module including a plurality of transmitting coils; and a receiving coil module including a plurality of receiving coils receiving power by electronic resonance with the plurality of transmitting coils. The plurality of transmitting coils have a winding structure which is formed by a conductive wire causing a direction of a magnetic field generated by any one of the plurality of transmitting coils different from a direction of a magnetic field generated by a transmitting coil directly adjacent to the one transmitting coil by making a current flow in the plurality of transmitting coils.

Abstract: Switching devices of a primary circuit connected in parallel to each other and a method for operating the same are provided. The switching device includes a first module that is connected between a power supply component that applies power of a vehicle and a ground component. A plurality of first modules and a plurality of second modules are provided. Further, a second module is connected in parallel to the first module.

Abstract: Disclosed herein is a wireless charging device including a heat radiation panel having a radiation plate and a radiation fin protruding from an upper surface of the radiation plate; a core section arranged in a region other than the protruding radiation fin, the core section being made of a material having high permeability; and a coil section arranged on the core section so as to come into contact with the protruding radiation fin.

Abstract: The present invention provides a power manufacturing apparatus capable of preventing particle growth when fine powder is formed through a fluid, the apparatus comprising: a molten steel providing part for providing molten steel; and a cooling fluid spraying part which is arranged at a lower part of the molten steel providing part and sprays a cooling fluid on the molten steel in order to pulverize the molten steel provided by the molten steel providing part, wherein the cooling fluid spraying part forms a first flow for cooling the molten steel so as to pulverize the molten steel and a second flow for forming a descending air current in the molten steel.

Abstract: A power conversion apparatus and method are provided. The apparatus includes a main battery and a power converter configured to execute a high power conversion mode that generates a high power and a low power conversion mode that generates a low power using an input power from the main battery. Additionally, an auxiliary battery is configured to receive and charge the low power and an inverter is configured to convert the high power to a driving power for driving a motor.

Abstract: A wireless charging system of a vehicle includes: a transmitting coil module including a plurality of transmitting coils; and a receiving coil module including a plurality of receiving coils receiving power by electronic resonance with the plurality of transmitting coils. The plurality of transmitting coils have a winding structure which is formed by a conductive wire causing a direction of a magnetic field generated by any one of the plurality of transmitting coils different from a direction of a magnetic field generated by a transmitting coil directly adjacent to the one transmitting coil by making a current flow in the plurality of transmitting coils.