A tri-port thyristor rectifier with three distinct output voltages

<p dir="ltr">Integrating renewable energy sources to mitigate greenhouse gas emissions has driven the development of microgrids. In AC microgrids, sizable DC load demands require rectifiers to convert AC power into DC. Full-bridge rectifiers based on line-commutated converters are commonly used, but they must accommodate the varying voltage requirements of different loads. Several approaches have been introduced to address the voltage variability through multi-port systems that enable independent DC voltage control. This paper presents a fully controlled tri-port rectifier, designed to provide independent voltage regulation for multiple DC outputs, using twelve thyristors. The operating principle of the proposed tri-port rectifier is explained with mathematical analysis in this paper. Compared to other thyristor-based rectifiers with multiple DC interfaces, the proposed tri-port rectifier reduces the thyristor voltage rating and total VA rating for the same DC power output. The implementation of the tri-port rectifier to supply three DC loads is presented and validated using a hardware prototype.</p>