VIENNA RECTIFIER FED SQUIRREL CAGE INDUCTION GENERATOR BASED STAND-ALONE WIND ENERGY CONVERSION SYSTEM

Abstract

Vienna rectifiers have gained popularity in recent years for AC to DC power conversion for many industrial
applications such as welding power supplies, data centers, telecommunication power sources, aircraft systems,
and electric vehicle charging stations. The advantages of this converter are low total harmonic distortion (THD),
high power density, and high efficiency. Due to the inherent current control loop in the voltage-oriented control
strategy proposed in this paper, good steady-state performance and fast transient response can be ensured. The
proposed voltage-oriented control of the Vienna rectifier with a PI controller (VOC-VR) has been simulated
using MATLAB/Simulink. The simulations indicate that the input current THD of the proposed VOC-VR
system was below 3.27% for 650V and 90A output, which is less than 5% to satisfy the IEEE-519 standard.
Experimental results from a scaled-down prototype showed that the THD remains below 5% for a wide range of
input voltage, output voltage, and loading conditions (up to 2 kW). The results prove that the proposed rectifier
system can be applied for high power applications such as DC fast-charging stations and welding power sources