| 摘要 |
<p>PURPOSE:To enable heat generated in a resistor unit and semiconductor elements to be fully radiated, by projecting a resistor unit containing snubbers for a main thyristor and a condenser for radiating the heat generated in the semiconductor elements so that they have a step difference on a vehicle side and besides installing a cover equipped with ventilating holes in conformity with the projecting part. CONSTITUTION:Each phase in this device is equipped with a cooling unit, in which an enclosed container 2 having semiconductor elements such as GTO thyristors, diodes and having coolents is connected with a condenser 3 installed in a ventilating chamber to radiate the heat generated in the said semiconductor elements in cycles of vaporization and condensation, filter capacitors 5 in a power source of the device, and a resistor unit 4 installed in the ventilating chamber and mainly equipped with snubber resistors for the said semiconductor elements. In such an inverter controlling device, disposal of equipment on a vehicle 18 side is formed in each phase of the following three separated blocks; the resistor unit, the cooling unit, and the filter capacitors 5. While the resistor unit 4 and the condenser 3 in the cooling unit are projected with a step difference on the vehicle 18 side, a cover 8 having the ventilating holes in conformity with the projecting part is installed.</p> |
