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拓扑与电路 PFC整流 LLC谐振 DC-DC变换器 ★ 2.0

一种基于ZCDS E类电流驱动整流器的单级LED驱动器作为路灯应用PFC

A Single-Stage LED Driver Based on ZCDS Class-E Current-Driven Rectifier as a PFC for Street-Lighting Applications

语言:

中文摘要

本文提出了一种用于路灯的LED驱动器,利用谐振整流器作为功率因数校正器(PFC)。PFC级基于零电流和零导数开关(ZCDS)的E类电流驱动整流器,LED驱动级基于零电压开关(ZVS)的D类LLC谐振变换器,两者集成以实现高效能转换。

English Abstract

This paper presents a light-emitting diode (LED) driver for street-lighting applications that uses a resonant rectifier as a power-factor corrector (PFC). The PFC semistage is based on a zero-current and zero-derivative-switching (ZCDS) Class-E current-driven rectifier, and the LED driver semistage is based on a zero-voltage-switching (ZVS) Class-D LLC resonant converter that is integrated into a ...
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SunView 深度解读

该文献探讨的E类整流器及LLC谐振技术主要针对高频、小功率LED驱动场景,与阳光电源核心的光伏逆变器(组串/集中式)及大功率储能系统(PowerTitan/PowerStack)在功率等级和应用场景上有较大差异。然而,其高频谐振软开关技术(ZVS/ZCDS)在提升功率密度和降低开关损耗方面的设计思路,可为阳光电源户用逆变器或小型充电桩的辅助电源设计提供参考,有助于进一步优化小型化产品的转换效率。