| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and a method for controlling a low voltage DC/DC converter (LDC) by using input current information on the LDC in which accuracy of LDC control is improved by reducing an error generated from topology using a transformer by using the primary-side, namely, input current information while defining the transformer of the LDC in an electric vehicle as a reference, and utilizing magnetization inductance information on the transformer and effective duty information on a PWM controller for LDC control.SOLUTION: The LDC control apparatus for controlling the LDC including the transformer and the PWM controller includes: an input current calculation part for calculating an input current of the LDC by using the magnetization inductance information on the transformer and the effective duty information on the PWM controller; an output current calculation part for calculating an instantaneous value and an average value of an output current on the basis of the input current calculated by the input current calculation part; and an LDC control part which generates a control signal for overcurrent protection or capacity control on the basis of the instantaneous value and the average value of the output current calculated by the output current calculation part and outputs the control signal to the PWM controller. |
