Hyundai Motor Company

Jong Kyung Lim

Ki Jong Lee

Jaewon Lee

Sung Kyu Kim

Byeong Cheol Song

Won Kyoung Choi

Shin Hye Chun

Hyong Joon Park

Tae Hwan Chung

Joon Hwan Kim

Hong Seok Song

A diagnosis device and method of a voltage transformer can include a current transformer disposed at one side of an output port for generating a current variation according to an on/off operation of a power switch element; a first current detector configured to detect a forward direction current from the current transformer; a second current detector configured to detect a reverse direction current from the current transformer; a first voltage transformer configured to transform the forward direction current detected from the first current detector to a forward direction voltage; a second voltage transformer configured to transform the reverse direction current detected from the second current detector to a reverse direction voltage; and a diagnosis portion for comparing the forward direction voltage with the reverse direction voltage to determine whether or not an offset is formed.

Apparatus for diagnosing DC-DC converter and method thereof

A method for controlling a cooling system for controlling a power converter of a hybrid electric vehicle includes: estimating the temperature of a power converter at the time of a CAN communication error as a current temperature of the power converter and controlling a cooling system at a cooling rate based on the estimated temperature; and controlling the cooling rate of the cooling system depending on whether an output of the power converter is greater than a reference value. According to the method, the cooling system can be more effectively controlled.

Method for controlling cooling of power converter for hybrid electric vehicle

Growing community of inventors

Gyeonggi-do, South Korea

Jong Kyung Lim