High gain Bi-directional KY converter for low power EV applications

IF 9 1区工程技术 Q1 ENERGY & FUELS Energy Pub Date : 2024-11-05 DOI:10.1016/j.energy.2024.133718

K Mounika Nagabushanam, Tarkeshwar Mahto, Somesh Vinayak Tewari, Ramanjaneya Reddy Udumula

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Abstract

In electric vehicles (EVs), the type of electric motor and converter technology have a significant impact on regulating the operational characteristics of the vehicle. Therefore, in this work, the modified bi-directional KY converter (BKYC) is proposed for EV applications. The main contributions of the proposed converter are high step-up/step-down conversion gain, bi-directional power flow, simplified control structure, continuous current, common ground, low volume, and high efficiency. An inductor on either side of the converter ensures continuous current flow and passive components are arranged to operate in series to offer high step-up/step-down conversion. The charging and discharging operations, steady-state analysis, and design process of the proposed converter are discussed in detail and compared with similar bi-directional converter topologies. Further, the efficiency analysis of the proposed converter is presented and found that the efficacy of 95.51 % in charging operation and 96.52 % in discharging operation of operation. The simulations are carried out using MATLAB/Simulink environment. Further, a prototype of a modified bi-directional KY converter is implemented with a TMS320F28335 processor and validated with theoretical and simulation counterparts.

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用于低功率电动汽车应用的高增益双向 KY 转换器

在电动汽车（EV）中，电机类型和转换器技术对调节车辆的运行特性有重大影响。因此，本研究针对电动汽车应用提出了改进型双向 KY 转换器（BKYC）。该转换器的主要优点是升压/降压转换增益高、双向功率流、控制结构简化、连续电流、共地、体积小和效率高。转换器两侧的电感器可确保电流连续流动，无源元件串联工作，从而实现高升/降压转换。本文详细讨论了拟议转换器的充放电操作、稳态分析和设计过程，并与类似的双向转换器拓扑结构进行了比较。此外，还对所提出的转换器进行了效率分析，发现其充电效率为 95.51%，放电效率为 96.52%。模拟使用 MATLAB/Simulink 环境进行。此外，还利用 TMS320F28335 处理器实现了改进型双向 KY 转换器的原型，并通过理论和仿真进行了验证。

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来源期刊

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.