Exploration of The Non – Commensurate Performance Objectives of Bi – Directional Vehicle to Grid Resonant Converter Based Battery Charger

Kuseso Onai, O. Ojo
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Abstract

In bidirectional Wireless power transfer (BDWPT) for electric vehicle battery chargers, aside improving efficiency, the effects of stray magnetic field on users and the general public is also of concern. Hence, the stray magnetic field and power loss are key performance indicators to be optimized. The optimization, reported in literature, is obtained with Pareto front which is derived by sweeping the physical parameters of the coil. This optimization is realized at the design stage. This work explores the optimization of these performance indicators from the control point of view and can be achieved on-line. The method discussed here involves the control of the duty cycle and displacement angles of the inverter and rectifier voltages to meet the objective of reducing the stray field and power losses. To this end, the classical Lagrange optimization procedure is employed to simultaneously minimize the stray magnetic field and power loss for a given output power condition.
双向车辆对栅格谐振变换器电池充电器非相称性能目标的探讨
在电动汽车电池充电器的双向无线输电(BDWPT)中,除了提高效率外,杂散磁场对用户和公众的影响也是一个值得关注的问题。因此,杂散磁场和功耗是需要优化的关键性能指标。文献报道的优化是用帕累托前进行的,该帕累托前是通过扫描线圈的物理参数得到的。这种优化是在设计阶段实现的。本工作从控制的角度探讨了这些性能指标的优化,并且可以在线实现。本文讨论的方法包括控制逆变器电压和整流器电压的占空比和位移角,以达到减小杂散场和功率损耗的目的。为此,采用经典的拉格朗日优化过程,在给定输出功率条件下,使杂散磁场和功率损耗同时最小化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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