Abstract
A novel dual Boost/dual Buck AC-AC converter which is very suitable for the variable-frequency power system of airplane (360Hz-800Hz) is proposed in this paper. It is constructed by directly connection of a dual Boost rectifier and a dual Buck inverter which inherit the merits of high reliability and efficiency of them for no hidden danger of shoot-through and no freewheeling current flows through the body diodes of power switches. The operational principle and control method are briefly talked about first; then the meth od of designing inductors is deduced, also the principle of choosing DC bus voltage and capacitors are proposed. At last, a 1KW laboratory prototype is designed. Both experimental and simulation results verified the validity of the presented circuit.

摘要：新型雙Boost/Buck AC-AC變換器非常適合于飛機(jī)的變頻式電力系統(tǒng)（360Hz-800Hz）進(jìn)行了論述。它直接連接雙Boost 整流器和雙Buck 逆變器，繼承了他們的高可靠性和高效率，沒有隱藏的、沒有自主擊穿的電流通過電源開關(guān)的體二級(jí)管。首先,簡(jiǎn)要討論工作原理及其控制方法;然后，推導(dǎo)電感器的設(shè)計(jì)方法，也知道選擇直流母線電壓和電容的原理。最后，設(shè)計(jì)出1KW實(shí)驗(yàn)室原型。實(shí)驗(yàn)和仿真結(jié)果都證明了提出的電路有效性。