Voltage Oriented Controller Based Vienna Rectifier for Electric Vehicle Charging Stations

Gowthamraj Rajendran,Kanendra Naidu,Norhisam Misron,Md Rishad Ahmed,Chockalingam Aravind Vaithilingam

doi:10.1109/access.2021.3068653

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.

Highlights

AC to DC converters with regulated DC output voltage is used as front-end converters for different applications such as electric vehicle chargers, telecommunication applications, welding power sources, data center, and motor drives [1], [2]
Vienna rectifier with voltage-oriented controller (VOC) controller has been simulated in MATLAB Simulink, and results are shown in Fig. 7 and Fig. 8
As input current total harmonic distortion (THD) is less than 5% in most cases, the IEEE-519 standard is satisfied, and the system provides a good power factor at the input side

Summary

Introduction

AC to DC converters with regulated DC output voltage is used as front-end converters for different applications such as electric vehicle chargers, telecommunication applications, welding power sources, data center, and motor drives [1], [2]. The unidirectional boost rectifier known as Vienna rectifier is used as a front-end converter [5]. This converter is well known for its topological structure. The Vienna rectifier is ideal for high power applications owing to the high power to weight ratio, high efficiency, and low voltage stress [7], [8]. The PI controller often struggles to work satisfactorily under parameter variations, nonlinearity, and load disturbances [10]

Methods

Results

Conclusion