I.V.R. is an On-load, Stepless Voltage Variation and Current Regulating Equipment.
Its Design is close to an Asynchronous Motor with a Wound Rotor.
I.V.R. works like a Rotating Field Transformer
Power Range: from 30 kVA to 3 MVA
THE SINGLE-PHASE INDUCTION REGULATOR
The unit operates as amplitude variation transformer. The secondary variable voltage depends on the angular position of the rotor with respect to the stator. A stabilizing winding is located on the rotor to reduce the leakage inductance of the secondary windings.
THE THREE-PHASE INDUCTION REGULATOR
This is a rotating field transformer. The secondary voltage is constant, but it shifts by an angle variable with the angular position of the rotor. The voltage variation is obtained by adding vectorially the network voltage to the secondary shifted voltage of the regulator.