COOLING CONTROL METHOD FOR INVERTOR AND LDC OF HEV

摘要

PURPOSE: A method of cooling the power converting device of a hybrid vehicle is provided to prevent the overheating of a power converting device even if there is a can communication error since the flow of cold air increases or decreases by the detecting of an output value according to a temperature protecting logic of the power converting device. CONSTITUTION: A method of cooling the power converting device of a hybrid vehicle is as follows. The temperature of the power converting device when there is a can communication error is estimated as the current temperature of the power converting device. A cooling device is controlled by air flow according to the estimated temperature. The power converting device determines that the actually required air flow of the power converting device is not insufficient if the power converting device makes greater output than the minimum output, which is the practical reference value of the temperature protecting logic. The level of the air flow of the cooling device gets lower.