省エネルギーのための定電圧き電方式

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  • Constant Voltage DC Feeding System to Save Energy.
  • ショウエネルギー ノ タメ ノ テイ デンアツ キデン ホウシキ

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The necessity to make more eforts for cutting back on energy consumption and saving the energy is now keenly felt in order to cope with progressive depletion of fossil fuel resources and envionmental destruction going on our planet.<br>Many regenerative braked cars (205 type) with superposed field excitation control are being introducted in DC electric railway. In the case of silicon rectifier substation, under light load the feeding voltages becomes higher, but lower under heavy load. However in the case of thyristor rectifier (constant voltage dc feeding system), under light load the feeding voltage can be kept constant. So we can reduce the resistor loss in powering operation and improve the regeneration coefficient in regenarative operation.<br>The authors have complished a simulation program for regenerative braked cars with superposed field excitation control which considers the train diagram and demonstrated the validity of the simulation program by a test of JR Yokohama line, and shown with simulation that the constant voltage feeding system is one of the most energy saving systems.

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