Mechanism for controlling voltage supplied to a load, a method to vary the voltage to a load and a method to vary the voltage to an induction motor

摘要

Mechanism for controlling voltage supplied to a load, a method to vary the voltage to a load and a method to vary the voltage to an induction motor.Mechanism for controlling voltage supplied to a load, comprising: a multiphase transformer having a primary coil and a secondary for each phase.Each secondary being connected in series between an input line and an output directed to the load; and the primary is configurable by the switches so that the phase of the secondary voltage is different from the line which is connected to a different stage of the and 180 degrees.