POWER SUPPLY EQUIPMENT FOR AC ELECTRIC VEHICLE

The tap positions of a first and a second tap switching transformers are respectively set as a large output position and as a small output position until all of the pantographs of an electric vehicle pass through an inlet-side air section. After all of the pantographs pass through the inlet-side air section before a front-side pantograph of the electric vehicle reaches the outlet-side air section, the second tap switching transformer tap position is gradually switched in an output increasing direction while the first tap switching transformer tap position is switched in an output decreasing direction, and the tap positions of the first and the second tap switching transformers are respectively set as the small output position and as the large output position. Thus, in the central section of power supply equipment for an AC electric vehicle, power supply phase-switching is performed without a momentary power failure.