Development of Low-THD Rippleless PFC Converter for High-Performance Electric Vehicle Charging

Adapa Sudheer Kumar; V. Suresh; Daggu Veera Venkata Chaitanya; Depati Veera Venkata Sai; Gavara Sai Babu

doi:10.51646/jsesd.v14i2.893

المؤلفون

Adapa Sudheer Kumar Godavari Institute of Engineering and Technology(A)
V. Suresh
Daggu Veera Venkata Chaitanya
Depati Veera Venkata Sai
Gavara Sai Babu

DOI:

https://doi.org/10.51646/jsesd.v14i2.893

الكلمات المفتاحية:

Electric Vehicles، Rippleless Power Factor Correction stage، hysteresis current control، high-frequency inverter، isolation transformer، synchronous rectifier

الملخص

With the era of diversified automotive technologies, petrol and diesel motor vehicles have ruled supreme as the main modes of transportation for years. However, their adverse environmental impacts have propelled the world toward electrified mobility at a faster pace. Such a shift highlights the importance of a comprehensive study of critical building blocks of Electric Vehicles (EVs), more specifically vehicle charging stations. This paper presents a novel low-ripple Alternating Current (AC) – Direct Current (DC) conversion architecture for Electric Vehicle (EV) charging applications, integrating a Rippleless Power Factor Correction (PFC) stage with high-frequency galvanic isolation and synchronous rectification. The front-end PFC circuit employs a dual-loop control mechanism combining a hysteresis current control strategy with voltage and current PI controllers. This approach ensures accurate input current shaping, reduced Total Harmonic Distortion (THD), and near-unity power factor, while providing stable and ripple-free DC output ideal for battery charging systems. The intermediate high-frequency inverter and isolation transformer enable compact design and safe voltage level adaptation, meeting safety and performance standards required in EV infrastructures. On the secondary side, a synchronous rectifier with closed-loop control minimizes switching losses and enhances energy transfer efficiency. The coordinated control structure ensures excellent dynamic response and robust output voltage regulation under varying input and load conditions, which are common in real-world EV charging scenarios. MATLAB simulation results validate that the proposed system achieves superior power quality, enhanced efficiency of 97.5%, and effective ripple suppression reduced THD of 1.17% compared to conventional converter topologies.

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