直流部分 meaning in English
direct component
Examples
- Note : always connect equalizer pipe into a straight run of the line , as shown
注：如图所示。平衡管始终要安装到管线直流部分内。 - Firstly . operation principle of induction heating is introduced and the actuality of the power supply for induction heating is summarized . then , the scheme of structure of the power supply is established : uncontrolled rectifier and buck chopper constitute dc circuit . in this part , operation principle of a kind of soft switching buck chopper is presented mainly and the conclusion that the power semiconductor devices operate in soft switching is also illustrated by analysing the operation principle of all stages ; series resonant inverter is selected as inverter circuit via comparing the advantage and shortcoming of parallel resonant and series resonant . moreover . the work principle of series resonant inverter is analysed and the calculating method of the best dead time is put forward as well
文中首先介绍了感应加热电源的工作原理并综述了国内外的研究现状。接下来分析并制定了电源主电路的构成方案：在对比几种功率调节方式的基础上选择了不控整流加斩波调压作为直流部分。在这部分里，重点研究了一种软开关buck变换器，通过分析各阶段的工作原理说明了开关器件如何工作在软开关状态；对于逆变器部分，在比较了串、并联逆变器优缺点的基础上选择了串联谐振逆变器，并详细分析了串联逆变器的工作原理，提出了最佳死区的计算方法。