本发明提供一种功率因数修正升压转换器及其切换频率调制方法,该功率因数修正升压转换器包括一功率因数修正转换单元与一控制单元,其中控制单元用以输出一脉波宽度调制信号至功率因数修正转换单元以调整输出至电压转换器的电力. The present invention provides a power factor correction boost converter and the switching ...
a500mA power supplies are allowed only for certain bettery pack accessories and require explicit approval from Apple 500mA电源仅考虑到某些bettery组装辅助部件并且要求明确认同从苹果计算机公司 [translate] athe line current of a boost power-factor-correction (PFC) converter 助力力量因素更正(PFC)交换器的...
AHC, adaptive harmonic compensation; PFC, power factor correction. It should be noted that harmonic compensation control can not only realize the function of harmonic compensation, but also consider the impact of this control on the boost PFC converter's own operating characteristics. Therefore, the...
This video series explores the basics of power factor correction (PFC) circuits. In this video, we discuss the motivation of bridgeless and common pitfalls, as well as compare and contrast popular embodiments of bridgeless PFC solutions.
[1] M. T. Zhang, Yimin Jiang, F. C. Lee and M. M. Jovanovic, ”Single-phase three-level boost power factor correction converter,” Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC’95, Dallas, TX, USA, 1995, pp. 434-439 vol.1. Click to access on...
buck-boost converterdouble averagingpower factor correctionBuck-Boost Power-Factor-Correction (PFC) converter with Average-Current-Model (ACM) control is a nonlinear circuit because of the multiplier using and large change in the duty cycle, so its stability analysis must be studied by nonlinear ...
【英文关键词】Power Factor Correction Boost converter One Cycle Control Soft switch 【目录】单周期控制软件开关Boost变换器PFC技术的研究 摘要 6-7 Abstract 7-8 第1章 绪论 11-24 1.1 有源功率因数校正(APFC)的提出 11 1.2 功率因数技术概述 11-15 1.2.1 功率因数的定义 11-14 1.2.2 谐波电流的危害...
An electronic power supply circuit (12) having a rectifier circuit (18) adapted to receive a source of alternating current (10), a power factor correction driven boost converter (20), and a bulk capacitance (22). The boost converter (20)... S Sodhi - US 被引量: 56发表: 1998年 PFC...
This Article provides an power factor corrected bridgeless buck-boost converter-fed brushless direct current motor as a cost-effective alternative pertaining to low-power apps. A technique of pace handle on the BLDC motor by managing the particular dc link voltage on the voltage source inverter (VS...
采用功率因数校正(Power Factor Correction,PFC)技术能有效解决这些问题。随着PFC技术研究的不断深入,无桥PFC和交错并联Boost PFC等新拓扑被提出[2-4]。其中,交错并联Boost PFC变换器可以降低器件应力、减小输入电流纹波幅值,有利于减小电感体积和提高功率等级,具有重要的研究意义[5-6]。