两级350W通用充电器的实用实现,用于动力移动设备充电应用
Muhammad Abdelraziq1, Ujjwal Pratik1, Zhansen Akhmetov1
1Electrical & Computer Engineering Department, North Carolina State University, Raleigh, USA.
概括
对于电动轮椅和电动滑板车等动力移动设备 (PMD) 的新型通用充电器实现了高效率. 这种设计符合对功率因子,波扭曲和电磁干扰的严格安全标准.
科学领域:
- 电气工程 电气工程
- 电力电子 电力电子 电力电子
- 可再生能源系统可再生能源系统
背景情况:
- 动力移动设备 (PMD) 需要高效可靠的充电解决方案.
- 现有的充电器可能缺乏通用兼容性或在各种负载中实现最佳效率.
- 严格的安全标准 (IEC 61000-3-2,CISPR 22) 的遵守对于电网接口的功率电子设备至关重要.
研究的目的:
- 为PMDs开发和验证一个通用的,双阶段充电器.
- 为了实现电动轮椅和滑板车的高效率和可靠性能.
- 确保遵守国际安全和电磁兼容性标准.
主要方法:
- 对交流电网接口实施一个整流器-提升功率因子校正 (PFC) 拓.
- 对于具有广泛操作区域的LLC共振转换器的双环控制器的设计.
- 对充电器的关键方面进行全面的设计,实施和严格的测试.
主要成果:
- 在所有负载条件下,PFC阶段实现了≈96%的效率,建立了一个≈386-VDC总线.
- 该LLC转换器达到95.5%的峰值效率,导致两个阶段的充电器效率为91.6%.
- 充电器成功通过了所有功率因子 (PF),总波扭曲 (THD),并执行了EMI安全要求.
结论:
- 开发的两级 (PFC+LLC) 充电器为PMD充电提供了通用和高效的解决方案.
- 该设计为开发和测试高性能功率电子充电器提供了实用指南.
- 充电器符合关键的安全和监管标准,确保安全可靠的操作.
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