| 并联交错临界连续PFC变换器的单周期控制 |
| |
| 引用本文： | 蒋志宏,黄立培,朱纪洪.并联交错临界连续PFC变换器的单周期控制[J].清华大学学报(自然科学版)网络.预览,2007(7). |
| |
| 作者姓名： | 蒋志宏 黄立培 朱纪洪 |
| |
| 作者单位： | 清华大学计算机科学与技术系 北京100084(蒋志宏，朱纪洪)，清华大学电机工程与应用电子技术系 北京100084(黄立培) |
| |
| 摘 要： | 为了利用临界连续导电模式功率因数校正器(PFC)高效的优点,将其应用到较大功率场合,提出一种用于临界连续PFC的单周期控制策略。采用开关频率和采样频率可变的方法,利用单数字信号处理器实现了3个临界连续PFC变换器的并联交错运行。提出的针对临界连续PFC变换器的单周期控制器无需对开关的高频峰值电流、电感电流过零点进行检测与判断,简化了临界连续PFC变换器的控制。实验结果表明:该方案可实现临界连续PFC变换器输入电流和输出电压的有效控制,可在保证高的输入功率因数同时,获得稳定的直流输出电压。
|
| 关 键 词： | 电源 临界连续导电模式 功率因数校正器 单周期 并联交错 数字控制 |
One-cycle controller for parallel-connected interleaving critical continous conduction mode PFC converter |
| |
| Authors: | JIANG Zhihong HUANG Lipei ZHU Jihong |
| |
| Institution: | JIANG Zhihong1,HUANG Lipei2,ZHU Jihong1 |
| |
| Abstract: | This paper proposes a one-cycle controller for a critical conduction mode(CRM)power factor correction(PFC)converter,and with variable switching-frequency and variable sampling-frequency used to have three CRM PFC modules operating in paralleling and interleaving mode with a single digital signal processor(DSP).The one-cycle controller for the CRM PFC needs not detect the peak switching current and judge the zero-cross of the inductor current,so it can simplify control of the CRM PFC converter at a great extent.Experiments show that the controller provides very effective control of the current input and the voltage output,so it can achieve stable output voltage with high input power factor. |
| |
| Keywords: | power supply critical conduction mode power factor correction one-cycle paralleling and interleaving digital control |
| 本文献已被 CNKI 等数据库收录！ |
