critical flow

The principle of three-phase active factor correction is analyzed in this thesis,based on which the circuit operates in critical continuous conduction mode is proposed.

对三相单管有源功率因数校正器的运行原理进行了分析,并在此基础上给出了工作在电流临界连续模式下的变换器控制方案。

The principle of three-phase single-transistor boost power active factor correction is researched in this thesis,and adjusting frequency method which the circuit operates in critical continuous conduction mode is proposed.

本文对三相单管升压型功率因数校正器的运行原理进行了分析,并提出了这种电路工作于电流临界连续模式下的调频控制方案。

In this paper,the properties of the maximal critically 4-connected are iscussed and a new procedure for constructing the maximal critically 4-connected graph is determined by means of graphical pasting.

引入图的粘合的概念,讨论了极大临界4连通图的性质,给出了一个图是这类图的一个充分必要条件,由此给出该类图的一种新的构造方法。