abstract This paper presents a Fast On-Load Tap Changing Regulator used to correct unbalanced voltages. This regulator uses the semi natural commutation in order to improve the response. The proposed topology injects the voltage in only phase in order to balance the three phase system. © 2010 IEEE.
keywords Distribution of electrical energy; Power quality Distribution of electrical energy; Natural commutation; On-load tap changing regulators; Three phase system; Unbalanced voltages; Voltage compensators; Power electronics