尤其适合以igbt作为主功率开关管的高电压、大功率功率变换，具有广泛的应用前景和巨大的经济价值。
So this novel converter has a wide application and huge economy effect in power converting field, especially in the high voltage and high power feild where IGBT is used as the main switch.
因此，高功率因数的大功率开关电源成为研究的热门。
Therefore, the high power factor high-power Switching-Mode power supply becomes the major topic of discussion studying.
本文设计了一种适用于中大功率、便携式逆变焊机，具有电源输入侧功率因数高，主功率器件实现软开关等特点。
In this paper, a multifunctional welding machine is designed with the characters of high power factor, soft switching and portable remove.
而分布式发电技术需要功率因数高，谐波污染少的大功率整流逆变系统作为其能量转换装置。
But this useful technology needs high power factor, low harmonics pollution rectifiers and inverters to be its energy converters.
构造基于反激拓扑的单级高功率因数的大功率电源的前提是弄清变压器的储能和释放规律。
The precondition of constructing single-stage high power factor high power supply based on flyback topology is that the release rule of transformer energy-storage is clear.
由于中大功率的电力电子设备在电网中占很大的比重，因此高功率因数的三相可逆变流器的研究已成为当今国内外研究的一大热点。
Due to the prodigious proportion of medium and big electronic equipment in power line, the research of three phase reversible converter is becoming the researching hotpot on international and native.
采用大功率IGBT模块作功率转换开关，可靠性高。
Adopting 20khz IGBT inverter technology to realize high reliability.
采用大功率IGBT模块作功率转换开关，可靠性高。
Adopting 20khz IGBT inverter technology to realize high reliability.
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