DEVICE TO REALISE AC VOLTAGE CONTROL Russian patent published in 2010 - IPC H02M5/12 

FIELD: electricity.

SUBSTANCE: form of consumed current may also differ from current consumed by load, which makes it possible to use the method not only for control of value and correction of AC voltage form, but also for correction of load capacity coefficient. Device to realise method of AC voltage control includes noise-suppression capacitor (C1), integrating throttle (L), commutator K for two positions, noise-suppression capacitors (C2, C3) and autotransformer with sectional winding (AT), besides, input voltage is sent to one output of integrating throttle and noise-suppression capacitor (C1), the second output of integrating throttle is connected to input of commutator (K), output (1) AT (winding start) is connected to common wire of device and point of connection of noise-suppression capacitors (C1-C3), output of section (2), which determines minimum input voltage, is connected to the first output of commutator (K) and the second output of noise-suppression capacitor (C2), output of section (3), which determines maximum input voltage, is connected to the second output of commutator (K) and the second output of noise-suppression capacitor (C3), and output voltage is taken from output (4) AT.

EFFECT: provides for smooth control in wide range of input voltage variation with the possibility to correct form of input voltage with device simplification.

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