Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item A Full Bridge Series-Series Resonant IPT System Optimized for Charging Electric Vehicle Batteries Across an Extensive Range(Institute of Electrical and Electronics Engineers Inc., 2024) Kishan, D.; Vinod, M.; Chub, A.Designing an effective inductive charging system for electric vehicles, with distinct battery pack voltages ranging from 200 V to 800 V, poses considerable challenges. Conventionally, addressing this broad battery range involves using a secondary-side DC-DC converter with diode bridge rectifiers or controlled rectifiers, but this approach increases onboard vehicle weight and introduces complex control issues, leading to reduced system efficiency. This article proposes an innovative solution in the form of a wide-gain converter with two sets of coupled coils designed to efficiently charge batteries across different voltage ranges. The proposed system operates in four modes: voltage doubler (V-D), current doubler (I-D), full-bridge (F-B), and half-bridge (H-B) the system. The proposed system is simulated in MATLAB simulations, and the simulated performances are validated using a laboratory prototype at different output voltage and power levels. Additionally, the laboratory prototype with SiC devices has been constructed. The efficiency analysis at various loading conditions has been evaluated. © 2024 IEEE.Item A Full Bridge Series-Series Resonant IPT System Optimized for Charging Electric Vehicle Bateries Across an Extensive Range(Institute of Electrical and Electronics Engineers Inc., 2024) Kishan, D.; Vinod, M.; Chub, A.Designing an effective inductive charging system for electric vehicles, with distinct battery pack voltages ranging from 200 V to 800 V, poses considerable challenges. Conventionally, addressing this broad battery range involves using a secondary-side DC-DC converter with diode bridge rectifiers or controlled rectifiers, but this approach increases onboard vehicle weight and introduces complex control issues, leading to reduced system efficiency. This article proposes an innovative solution in the form of a wide-gain converter with two sets of coupled coils designed to efficiently charge batteries across different voltage ranges. The proposed system operates in four modes: voltage doubler (V-D), current doubler (I-D), full-bridge (F-B), and half-bridge (H-B) the system. The proposed system is simulated in MATLAB simulations, and the simulated performances are validated using a laboratory prototype at different output voltage and power levels. Additionally, the laboratory prototype with SiC devices has been constructed. The efficiency analysis at various loading conditions has been evaluated. © 2024 IEEE.Item Optimized LCC-Series Resonant DC-DC Converter for Efficient Inductive Charging of EV's with 400V and 800V Battery Systems(Institute of Electrical and Electronics Engineers Inc., 2025) Kishan, D.With the prevalence of electric vehicles (EVs) equipped with batteries rated at either 400 or 800 volts, the design of wireless inductive charging infrastructure poses a significant challenge. Conventional approaches rely on DC-DC converters at the receiver end to regulate voltage, leading to increased circuit complexity, added weight on the vehicle, and decreased overall efficiency. In response, this paper proposes a novel solution: a resonant converter located at the transmitter side capable of doubling the voltage to accommodate both 400 V and 800 V EV batteries. This innovative approach not only maintains high power transfer efficiency during charging but also eliminates the need for additional onboard circuitry. Moreover, the receiver system utilizes only passive semiconductor devices, enhancing compatibility and efficiency across a range of battery voltages. Additionally, the paper explores the advantages of incorporating LCC-series compensation into this converter. © 2025 IEEE.