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AC-AC converters based on Z-source networks have some unique advantages such as; provision of a wide range output voltage with both step-up and step-down capability, reversing or maintaining phase-angle, reducing the inrush and harmonic currents, and enhanced reliability. However, these existing Z-source ac-ac converters are non-isolated, and therefore, they need external bulky line frequency transformer...
Traditional non-isolated ac-ac converters require an external bulky line frequency transformer for electrical isolation and safety, for applications such as dynamic voltage restorers (DVRs) etc. This line frequency transformer has some demerits such as; high cost, large size, relatively high losses, saturation and start up inrush current. To overcome this drawback, an isolated buck type ac-ac converter...
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