A Practical Implementation of a Two-Stage 350-W Universal Charger for Power Mobility Device Charging Applications.

... IEEE Energy Conversion Congress and Exposition. IEEE Energy Conversion Congress and Exposition Pub Date : 2023-01-01 DOI:10.1109/ecce53617.2023.10362824

Muhammad Abdelraziq, Ujjwal Pratik, Zhansen Akhmetov, Stephen Paul, Gabriel Chenevert, Zeljko Pantic

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Abstract

A universal, two-stage (PFC+LLC) charger is developed for Power Mobility Device (PMD) charging applications (i.e., electric wheelchairs and scooters). A rectifier-boost PFC topology is used to interface with the AC grid, establishing a ≈386-VDC bus and maintaining around 96% efficiency for all loading conditions. A dual-loop controller for the LLC resonant converter with a wide operation region is designed to achieve CC-CV for different capacities of 24-V batteries. The LLC converter achieves a peak efficiency of 95.5%, making the two-stage charger 91.6% efficient. This paper presents a comprehensive design, implementation, and testing validation for major aspects of the charger. The charger is rigorously tested, passing all power factor (PF), total harmonic distortion (THD), and conducted EMI safety requirements set by IEC 61000-3-2 and CISPR 22 regulatory standards. The paper not only offers theoretical insights but also presents a comprehensive guide to the practical design and testing procedures of every facet of the charger.

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一种用于电力移动设备充电的两级350w通用充电器的实际实现。

一种通用的两级（PFC+LLC）充电器是为电力移动设备（PMD）充电应用（即电动轮椅和踏板车）开发的。整流-升压PFC拓扑用于与交流电网接口，建立≈386 vdc总线，并在所有负载条件下保持约96%的效率。为实现不同容量24v电池的CC-CV控制，设计了宽工作区域LLC谐振变换器的双环控制器。LLC变换器达到95.5%的峰值效率，使两级充电器的效率达到91.6%。本文对充电器的主要方面进行了全面的设计、实现和测试验证。该充电器经过严格测试，通过了IEC 61000-3-2和CISPR 22法规标准设定的所有功率因数（PF），总谐波失真（THD）和EMI安全要求。本文不仅提供了理论见解，而且还提供了一个全面的指南，以实际设计和测试程序的每一个方面的充电器。

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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... IEEE Energy Conversion Congress and Exposition. IEEE Energy Conversion Congress and Exposition

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