Fast charging, grid stability, energy economy, and the smooth integration of electric vehicles into the electrical grid are all made possible by Vienna rectifiers. When used in battery energy storage systems (BESS) for electric vehicle charging infrastructure, Vienna rectifiers allow for effective discharge and charging of the batteries.
Because of this benefit, the charging system based on the Vienna rectifier can be utilized with off-board chargers as well as on-board chargers. The Vienna rectifier is normally found in power supplies, motor drives, and other similar applications that require careful rectification of three-phase AC to DC.
Compared to the circuit with more switches, the one with fewer switches enhances the power factor on the supply side by reducing THD in the line current. Split capacitors on the output side minimize voltage stress on power semiconductor switches in this converter. The Vienna rectifier has three voltages: +V dc /2, 0, and –V dc /2.
Due to its reduced magnetic space and consistent DC voltage, the Vienna three-level rectifier input stage is ideal. The power density of the Vienna rectifier of about 12 kW/dm3. Hence, it finds utility in power-efficient, high-power applications. The Vienna rectifier maintains an efficiency of 98 %.
Having a high power density of 12 kW/dm3 [36, 37] to the Swiss rectifier's 4 kW/dm3 , the Vienna rectifier is the superior converter architecture for charging power stations. The DC fast charger design team has made a terrible choice in using the Vienna rectifier, despite its high-power density being a benefit.
Low power factor and excessive harmonic distortion are two problems with traditional rectifiers like half-wave and full-wave rectifiers. It is an attractive option for contemporary power electronics designs since it can fix the problems with traditional rectifiers. There is a substantial body of work discussing the topology of Vienna rectifiers.
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