AC Voltage Regulator Based on the AC-AC Buck-Boost Converter

The study and implementation of an ac voltage regulator is presented in this paper. Traditionally an ac voltage regulator is made with a transformer tap changer or with an ac-ac converter based on buck topologies, recently the developments in ac-ac converter makes feasible the implementation of voltage regulator with other topologies. In this paper is analyzed an ac voltage regulator based on the ac-ac buck-boost converter, the commutation trouble is solved with two inductors. The controller used permits to obtain a good dynamic response for large input voltage variations. The operation and brief analysis is included. Simulations and experimental results are presented.