Current Control Design Based on Dynamic Model of Vienna Rectifier for Harmonic Mitigation

The Vienna Rectifier is an AC-DC converter system with features that allow for a high output voltage and minimal ripple compared to a conventional rectifier that does not draw current from the grid. The main differences between conventional and Vienna rectifiers are harmonics, power factor, and efficiency. The Vienna rectifier reduces grid-side harmonics and improves the power factor. In this research, the current in the Q-axis is controlled to zero so that the power factor of the system is as close to one as possible, and a PI controller is used to create a stable output signal for the system. The result is that the system can produce an output voltage level of 800V and a THD of less than 5%, according to IEEE 519–2022 standards. The efficiency of the input signal has been improved, which can reduce the THD of the input as well. The research also tested software designed with C2000 microcontrollers to prove that the designed model can operate in real-life situations.