| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an air-conditioner power supply system for multi-power supply type railcar, which reduces a mass increase in a railcar side by sharing equipment lines (of one system) even in a multi-power supply type railcar, can provide an air-conditioner suitable for it, and can achieve weight saving and space saving of an auxiliary power supply device. <P>SOLUTION: The air-conditioner power supply system for multi-power supply type railcar includes an auxiliary power supply device 5 and an air-conditioner 10. When a voltage from an overhead wire 3 extending over different power supply zones drops by a transformer 4, the auxiliary power supply device 5 converts the voltage to a low DC voltage. When the voltage from the overhead wire 3 is a DC voltage, the auxiliary power supply device 5 directly takes in the voltage and converts the voltage to a DC voltage the same as the low DC voltage. The air-conditioner 10 has an inverter device for converting the DC voltage from the auxiliary power supply device 5 to an AC voltage and supplying the converted AC voltage to a driving unit of a refrigeration cycle device. <P>COPYRIGHT: (C)2013,JPO&INPIT |
