| 摘要 |
PURPOSE:To aim at efficient compensation for a voltage drop in an aerial line without installing any special high tension load dispatching equipment over a long distance, by installing a semiconductor rectifier in position between a 3-phase feeder line and an electric-car line, while supplying a DC electric car being electrically connected to the electric-car line with DC power. CONSTITUTION:Receiving voltage of a special high tension power source 11, a dropped 3-phase AC voltage is produced by a transformer 12 for a rectifier inside a substation, and this voltage is fed to an electric-car line 14, on which a DC electric car 13 runs, and a 3-phase feeder line 16 to be set up along a rail 15. In addition, each arm rectifier 17 consisting of a silicon rectifier or the like is interpersedly set up on a pole top along the electric-car line 14 or in the station yard, while the rectifier 17 is connected to the 3-phase feeder line 16, the electric-car line 14 and the rail 15, and six-in-a-set rectifier circuits are constituted of six arm rectifiers 17. With this constitution, a voltage drop due to the rail 15 becomes lessened, besides safety and, what is more, electric erosion in the rail 15 due to a leaked current is considerably relieved. Moreover, induction in a car line is also relieved, and the AC voltage is used in common with illumination and a signal power source in the station whereby the AC feeder line 16 in the electric-car line 14 can be thus simplified.
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