PFC rectifier with reduced switch count and multicarrierPWM

Abstract

EVs provide a number of benefits in contemporary power networks, including peak power control, peak load shifting, less environmental pollution, and more. In the grid-to-vehicle (G2V) charging mode and the vehicle-to-grid (V2G) discharging mode, respectively, EVs can operate either as a load or a generator. The power converter used in "G2V-only" systems, which include both standard and rapid charging systems, is typically unidirectional. Due of the large power flow, fast charging strains the grid network. Modern conversion must be used by the G2V charger to prevent grid disruptions such undesirable peak loads, harmonics, and low power factor. Energy injection back into the grid is made easier by the V2G technology. The grid-connected AC-to-DC converter, which mandates sinusoidal input current with a high-power factor (near to unity) and permits bidirectional power flow, is a crucial component of the V2G interface. The high efficiency and uninterpretable power supply are the most important criteria in the power distribution system due to the regular shortfalls in fossil fuels and extreme emission regulations. The distributed generating systems are the promising solutions and gaining more attention towards renewable energy which provides a flexible system configuration to integrate the DERs which include solar Photo-voltaic, wind, fuel cell, super capacitors and energy reserves etc. The recent advancement in power electronic converters is grasped much attention in the field of distributed generation, electric vehicle applications and integration of generating systems with islanded/grid-tied. In two-stage EV charging systems, the grid power input is first transformed by an AC-to-DC converter into a constant DC output voltage. In the case of single-phase boost rectifiers, the output voltage varies from 400 VDC to 500 VDC. In this design, the rectifier's and the DC-DC converter's power switches' combined total standing voltage (TSV) equals the DC-link voltage.