Total Harmonic Distortion Study for Improvement of AC-AC Converter Under Buck-Type

An AC-AC converter is a converter that is widely used in the industrial sector today because of its ability to convert AC power at high frequency. Although the AC-AC converter is commonly used in the industry, it also has problems producing smooth output. The presence of high THDv at the output of AC-AC topology has a detrimental effect on the output of the system. The single-stage and double-stage of DC-modulated methodology were implemented, studied, compared, and analyzed under THDv-based. It demonstrates an effective method for dealing with significant THDv in AC-AC topologies and achieving low THDv at the output voltage according to IEEE-519-1992 standard while keeping the high performance of efficiency at less than 5%.