| 摘要 |
PURPOSE:To obtain a miniature starting device at a low cost, by connecting an AC exciting thyristor frequency converter (AETFC) to a stator when an AC exciting type variable-speed dynamotor(AESGM) is started, and by feeding DC exciting power to a field system. CONSTITUTION:In order to start a pump water wheel 1 in the pumping-up direction, breakers 19, 19a are turned ON first, and two-phase among the three- phase AC winding of an AESGM 2 is short-circuited, and a single phase field winding is composed. After that, breakers 12, 23 are turned ON, and starting power is fed from an AETFC11 to the stator 3 of the AESGM2, and from an exciting rectifier 20, constant DC exciting power is fed to the field winding 8 of the AESGM2. When the rotating speed of the pump water wheel 1 is heightened, then the breakers 23, 19, 19a are turned OFF, and the breakers 10, 12 are turned ON, and from the AETFC11, AC exciting power is fed to the field winding 8 of the AESGM2, and speed matching control is performed.
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