| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power supply system of an electrically driven work machine that reduces equipment cost at a working site and improve the workability of the electrically driven work machine. <P>SOLUTION: The power supply system of a hydraulic shovel includes a dump truck 1, a hydraulic shovel 2, and a power cable 3 connecting the dump truck 1 to the hydraulic shovel 2. The dump truck 1 has an AC power generator 12 driven by a diesel engine 11, an inverter 13 which controls the frequency of power output from the AC power generator 12, a distributor 14 which distributes a power output from the inverter 13, and a transformer 17 connected to the working machine side output end of a distributor 14. The hydraulic shovel 2 includes a cubicle 21 which receives power from the dump truck 1, an AC motor 22 connected to the cubicle 21, and a hydraulic pump 24 driven by the AC motor 22. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
