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induction regulator
An Induction regulator is a device, based on an induction motor, which can provide a continuous (analogue) variable output voltage. In the past, it was used to control the voltage of electric networks. Nowadays, it has been replaced in this function by the tap transformer. Its usage is now mostly confined to electrical laboratories, electrochemical processes and arc welding. With minor variations, its setup can be used as an isolator phase-shifting power transformer.
==Construction==
The induction regulator can be regarded as a wound induction motor. The rotor is not allowed to turn freely and it can be mechanically shifted by means of a worm gear. The rest of the regulator's construction follows that of a wound rotor induction motor with a slotted three-phase stator and a wound three-phase rotor with ends connected to accessible slip rings plus common point (neutral)
Depending on the application, the ratio of number of turns on the rotor and the stator can vary.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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