| 摘要 |
PURPOSE:To adjust the smooth invalid electric power simply and to eliminate the necessity of the maintenance almost by turning and positioning relatively the winding type rotor and the stator of the shifting device. CONSTITUTION:Switches S1-Sn and S1'-Sn' are all opened, so that a delay invalid electric power adjusting device 6 can obtain the maximum delay invalid electric powe, the rotational angle of a winding rotor 1 of a phase shifter M is adjusted to 180 deg. by a worm 5 to a stator 2. Next, switches S1' and S1 are inputted. At such a time, since the invalid electric power obtained by a capaci tor C1 and the delay invalid electric power obtained by the device 6 are equal, the total invalid electric power comes to be zero. Next, so that the invalid electric power obtained by the device 6 can come to be small, a rotational angle theta of the rotor 1 is decreased, the rotational angle theta is brought to 0 deg. and the switch S1' is opened. In the same way hereinafter, capacitors C2-Cn are proceeded and the invalid electric power is obtained. Thus, the total capacity of the phase shifter M and a transformer T can be decreased to 1/n of the capacitor K. |
