Ac power source

阅读:802发布:2021-11-25

专利汇可以提供Ac power source专利检索,专利查询,专利分析的服务。并且PURPOSE:To eliminate the brush of an AC power source by supplying exciting current by reverse phase exciting method with the first AC exciter when starting a phase controller and supplying it with the second AC exciter controlled by a voltage regulator after completely starting the phase controller. CONSTITUTION:When a phase controller 19 is started by supplying the output of an AC generator 3 through a variable frequency power source having a converter 6, a DC reactor 7 and an inverter 8, a switch 26 is closed, and the primary side of the first AC exciter 20 is excited in reverse phase. Thus, the field coil 22 can be energized with exciting current. When the rotating speed of the phase controller 19 exceeds the predetermined value, the switch 26 is opened, and the exciting coil of the second exciter 23 is excited by the output of a voltage regulator 14. In this manner the field coil 25 can be excited with exciting current.,下面是Ac power source专利的具体信息内容。

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