| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power conversion device in which excessive thermal margin is eliminated by precisely detecting an inner temperature of a capacitor, and which is miniaturized. <P>SOLUTION: The power conversion device is provided with: the capacitor 11; a power conversion circuit 12 having DC terminals 22 and 23 connected to electrode terminals 20 and 21 of the capacitor 11; two temperature-sensitive elements 18 and 19 which are arranged in different parts of a housing 11a of the capacitor 11 and sense a temperature; an operation circuit 13 to which output signals from the two temperature sensitive elements 18 and 19 are inputted; and a control circuit 14 which decreases or stops output of the power conversion circuit 12 when the inputted output signals from the operation circuit 13 exceed a threshold. The capacitor 11 is an aluminum electrolytic capacitor or a film capacitor. <P>COPYRIGHT: (C)2008,JPO&INPIT |
