• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>CPES Annual Power Electronics Conference >Novel PWM Power Factor Correcting Circuits with Two Switches
【24h】

Novel PWM Power Factor Correcting Circuits with Two Switches

机译：具有两个开关的新型PWM功率因数校正电路

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Any non-isolated PWM dc-to-dc converter whose output is a bipolar function of the duty cycle is shown to perform power factor correction requiring neither a bridge rectifier circuit on the input, which operates at the line frequency, nor an additional rectifying diode on the output side which operates at high switching frequencies. Six such converters, comprising only two switches, are identified. Three of these converters have a voltage conversion ratio which is a singular function of the duty cycle and, as such, are best suited for output voltages that are larger than the peak input voltage. The other three converters are the bilateral inverses of the first three, have a current conversion ratio which is a singular function of the duty cycle, and are best suited for output voltages that are significantly lower than the peak input voltage. The physical realization of each switch may require more than one semiconductor device to ensure proper bidirectional current flow and bipolar voltage blocking. As expected, the savings in the number of switches in these new PFCs results in voltage and current stresses that are higher than those found in previous topologies. Cycle-by-cycle and time-average simulations are presented along with a detailed small-signal analysis using the model of the PWM switch.
机译：任何非隔离PWM直流到直流转换器，其输出为占空比的双极功能被示出为执行需要对输入既不是一个桥整流电路，其在线路频率工作，也没有额外的整流二极管的功率因数校正在其上在高开关频率工作的输出侧。六个这样的转换器，仅包括两个开关，被识别。这些转换器的三个具有电压转换比，即占空比的奇异函数，并且这样，最适合于那些比峰值输入电压大的输出电压。其他三个转换器的前三个的双边逆，有一个电流转换比，即占空比的单数函数，并且最适合于输出电压，即比峰值输入电压显著降低。每个开关的物理实现，可能需要多于一个的半导体器件，以确保适当的双向电流流动和双极电压阻断。正如预期的那样，在电压这些新的PFC开关结果和电流应力的数量比以前的拓扑发现更高的储蓄。逐周期和时间平均的模拟与使用PWM开关的模型详述的小信号分析一起呈现。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号