Voltage Oriented Controller Based Vienna Rectifier for Electric Vehicle Charging Stations

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.

A Comprehensive Review of Power Converter Topologies and Control Methods for Electric Vehicle Fast Charging Applications

“…Several control methods of VR have been employed in the literature for EV charging applications such as hybrid linearnonlinear control [193], mixed-signal based control [194], model predictive control [195], synergetic vector control [67], and voltage oriented control [196] in order to fulfill certain objectives; for instance, PFC control, neutral point voltage balancing, current tracking under disturbances, reduction of dc link voltage ripple, mitigation of THD in the input current, attaining unity power factor, and reducing the losses. The comprehensive control structure of VR as an EV charger contains three necessary functional blocks such as output current control, grid current control, and dc link voltage control as depicted in Fig.…”

Power Converter Topologies for Grid-Tied Solar Photovoltaic (PV) Powered Electric Vehicles (EVs)—A Comprehensive Review

“…However, the conventional VSI suffers from low efficiency. Other potential topologies with higher efficiencies include SWISS [27,39,41] and VIENNA converters [40,42,54] (See Figure 11). Moreover, the SOC of the EV batteries with a capacity of 20 kWh-40 kWh must reach 80% within 30 min.…”

A comprehensive review on system architecture and international standards for electric vehicle charging stations

“…Also, for Vienna rectifier, input current harmonics are less than 5%, which satisfies IEEE-519 standards. With high voltage capability at output side from a three-phase distribution grid, it is ideal choice, more specific for electric vehicle power electronics of the future [131].…”