Hyundai Motor Company

Kia Corporation

Kia Notors Corporation

Sung Uk Park

Dong Gyun Woo

Hui Sung Jang

Jee Heon Kim

Hyun Wook Seong

Chul Soon Kim

Jae Hyun Kim

Hyun-Wook Seong

An embodiment apparatus for an electric vehicle includes an indoor power outlet configured to receive power through one of a plurality of lines except for a single-phase alternating current (AC) charging line among three-phase AC input lines, a sensor configured to measure a required current of an electronic device connected to the indoor power outlet, and a controller configured to control a bidirectional on board charger of the electric vehicle based on the required current.

Apparatus and method for controlling bidirectional on board charger of electric vehicle

An embodiment control device includes a voltage controller configured to output an input current command value of a power factor correction (PFC) based on an output voltage and an output voltage command value of the PFC, a current controller configured to control an input current of the PFC by determining a switching duty of the PFC based on the input current command value, and a current command upper limit generator configured to output an input current command upper limit value of the PFC based on an input current limit value and an input current command offset value of the PFC, wherein the input current command upper limit value has an alternating current (AC) component.

Apparatus and method for controlling power factor correction to suppress overcurrent

An electrified vehicle includes an inverter to convert a DC voltage of an input terminal into an AC voltage based on a PWM control signal to output the AC voltage to an output terminal, an inverter controller to control a duty ratio of the PWM control signal in order to adjust a level of the AC voltage to a level of a target voltage, and a battery controller to determine whether an overcurrent is generated based on a maximum instantaneous current output from the output terminal of the inverter in a battery power output mode and terminate the battery power output mode when the overcurrent is generated, determine whether to re-enter the battery power output mode based on the number of overcurrent generations when the battery power output mode is terminated, and set the level of the target voltage in response to the number of overcurrent generations upon re-entering.

Electrified vehicle and method of controlling the same

An embodiment method for controlling a power factor correction circuit includes detecting an AC zero voltage crossing point, detecting a current flowing through an inductor, and reducing a distortion of the current flowing through the inductor by determining a current at the AC zero voltage crossing point as a resistive current, an inductive current, or a capacitive current and controlling each of a plurality of switching elements from a time point when the AC zero voltage crossing point is detected based upon a result of determining the current.

Method and system for controlling power factor correction circuit

A method for controlling an LLC resonance converter controls a converter through the steps of detecting parameter values related to operation of the converter, determining a switching duty of the converter on the basis of the detected parameter values, and controlling the converter with the determined switching duty to improve nonlinearity of a gain curve of the converter, thereby reducing output current ripples and achieving low-gain output.

Device and method for controlling LLC resonance converter using switching duty control

A device for supplying power from a vehicle battery to the outside is provided. The device includes an inverter circuit having a bridge circuit with multiple switching elements and that converts the received DC power into the AC power by switching the switching elements and that outputs the AC power. A controller controls an on/off state of each switching element through pulse width modulation. When an output AC output to the load has a value greater than a preset reference value or an input direct current input into the inverter has a value greater than a preset reference value, the controller changes a duty of each switching element to reduce an output AC voltage output from the inverter. When the reduced output AC voltage has a value equal to or less than a preset reference value, the controller stops a power conversion operation of the inverter.

Device for supplying power from vehicle battery to vehicle outside and vehicle bidirectional charger including same

An apparatus for controlling a power factor correction circuit of a charger for charging a vehicle batter is configured to correct a power factor of an input AC voltage through switching of a switching element. The apparatus for controlling the power factor correction circuit includes: a phase angle detection unit configured to detect phase angle information of the input AC voltage; and a frequency determination unit configured to synchronize a period in which a preset frequency variation value varies, with a period of the input AC voltage by applying the phase angle information to the frequency variation value, and determine, as a switching frequency of the switching element, a value obtained by applying the synchronized frequency variation value to a preset fundamental frequency value.

Apparatus for controlling power factor correction circuit of charger for vehicle battery

An apparatus for controlling a low-voltage DC-to-DC converter of a vehicle for converting high-voltage power into low-voltage power may include a signal selector for selecting and outputting one of a charging-oriented voltage command for charging the battery or a preset burst mode voltage command for operation of the low-voltage DC-to-DC converter in a burst mode in which the battery cannot be charged, a battery charge/discharge current limiter for generating a voltage command compensation value for limiting charge current of the battery when the signal selector outputs the charging-oriented voltage command and limiting discharge current of the battery when the signal selector outputs the burst mode voltage command, and a controller for controlling an output voltage of the low-voltage DC-to-DC converter to follow a compensated voltage command generated by applying the voltage command compensation value to the voltage command output by the signal selector.

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Whasung-Si, South Korea

Sung Uk Park