A Single-Stage Bridgeless PFC Charger with Enhanced Power Quality for LEV-Mounted Solar PV Panels

The proposed single-stage bridgeless PFC charger successfully enhances the charging performance of Light Electric Vehicles (LEVs) by combining high-efficiency power conversion with improved power quality. Eliminating the conventional diode bridge reduces conduction losses, resulting in higher overall efficiency. The integrated Power Factor Correction enables the charger to achieve a power factor close to unity while maintaining current THD within international standards. The incorporation of a solar PV panel allows the battery to utilize renewable energy, reducing dependence on the utility grid and lowering operating costs. Overall, the proposed system offers a compact, efficient, environmentally friendly, and reliable charging solution suitable for next-generation electric mobility. A grid and PV panel interfaced charger for LEV is presented in this article with the merit of improved PQ of grid current. The dc output power is generated from both sources, capable of operating simultaneously and separately. A small signal analysis, which is further verified by ac-sweep in PSIM, is performed for the frequency response of the designed charger. It improves the PQ of ac current and MPPT of PV panel input under steady-state as well as dynamic operational conditions. Few components are shared between each source to reduce the overall components. An inductor at each input eliminates the necessity of a large filter. The charger configuration gives an additional benefit over conventional topologies by improving THD in grid current for dual input operation. Here, addition of a PV panel reduces the THD by improving the voltage profile of common intermediate capacitor between two sources. Operation of the presented topology is verified on a 500 W laboratory prototype under steady-state and diverse dynamic conditions. 

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