Abstract:

Recently, Vienna rectifiers have become popular for AC to DC power conversion in welding power supplies, data centers, telecommunication power sources, aerospace systems, and electric vehicle charging stations.

This converter has minimal THD, high power density, and excellent efficiency. In this paper’s voltage-oriented control technique, the inherent current control loop ensures good steady-state performance and quick transient response.

The proposed voltage-oriented control of the Vienna rectifier with a PI controller (VOC-VR) was simulated in MATLAB/Simulink. Simulations show that the suggested VOC-VR system’s input current THD was below 3.27% for 650V and 90A output, meeting the IEEE-519 standard.

A scaled-down prototype showed that THD remains below 5% for a wide range of input voltage, output voltage, and loading circumstances (up to 2 kW). DC fast-charging stations and welding power sources can use the suggested rectifier technology, according to the results.

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