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拓扑与电路 PFC整流 PWM控制 功率模块 ★ 3.0

面向低功率应用具有稳流输出的高阶AC-DC PFC变换器设计

Design of AC–DC PFC High-Order Converters With Regulated Output Current for Low-Power Applications

语言:

中文摘要

本文探讨了低功率应用中AC-DC功率因数校正(PFC)电路的设计,旨在解决波峰因数、功率因数及总谐波失真(THD)带来的电能质量问题,并实现高精度的输出调节。研究重点在于利用高阶变换器提升驱动效率。

English Abstract

AC-DC power factor corrector circuits used in low-power applications have to overcome important power quality problems related to crest and power factors as well as total harmonic distortion (THD), and in many cases, they have to exhibit a high degree of output regulation. The design of efficient drivers for low-power applications using high-order converters is considered in this paper. Power fact...
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SunView 深度解读

该研究关注AC-DC PFC变换器的电能质量优化与高阶拓扑设计,对阳光电源的户用光伏逆变器及电动汽车充电桩业务具有参考价值。在户用逆变器中,优化PFC级可提升整机效率并降低THD,满足日益严格的电网接入标准。对于充电桩产品,高阶变换器设计有助于减小磁性元件体积,提升功率密度。建议研发团队关注该高阶拓扑在小功率段的损耗模型,以优化阳光电源现有户用及充电桩产品的散热设计与控制策略,进一步提升产品在轻载下的能效表现。