【正文】 T和IGBT可使小型開關(guān)電源的工作頻率達(dá)到400kHz(AC/DC)或1MHz(DC/DC)。當(dāng)時(shí)引進(jìn)的開關(guān)電源技術(shù)，在高等院校和一些科研院所停留在實(shí)驗(yàn)開發(fā)和教學(xué)階段。課題研究的意義在于：當(dāng)代許多高新技術(shù)均與電源的電壓、電流、頻率、相位和波形等基本技術(shù)參數(shù)的變換和控制相關(guān)，電源技術(shù)能夠?qū)崿F(xiàn)對這些參數(shù)的精確控制和高效率的處理，因此，電源技術(shù)不但本身是一種高新技術(shù)，而且還是其評它多項(xiàng)高新技術(shù)的發(fā)展基礎(chǔ)。開關(guān)電源的高頻變換電路形式很多, 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