Tri-level Buck circuit can reduce the switch tube on both ends of the voltage, at the same time can also reduce the electric pulse, reduce the output harmonic. It is because of the above advantages tri-level Buck circuit can be in the transformation situation of high voltage and high power. Dc conversion circuit is now facing modular is more reliable, higher efficiency. It is because of these advantages, can is a volume element. So the tri-level Buck circuit to further popularize and apply in today's society in the direction of the electrical automation has quite important meaning and function. So the tri-level converter is of vital significance to the development of today's electric products.%三电平Buck电路可以降低开关管两端的电压,同时还可以降低电脉动,减小谐波输出.正是由于以上优点三电平Buck电路可以在电压较高以及功率较高的转换场合.现在直流变换电路正在朝向模块化更加可靠、更高的效率.正是由于这些优点,才可以使元件的体积减小.所以研究三电平Buck电路对当今社会在电气自动化方向的进一步普及应用有着相当重要的意义和作用.因此研究三电平变换器对当今电气产品的发展有着举足轻重的作用.
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