And the design guideline of the circuit parameters in both the discontinuous current mode ( dcm ) and continuous current mode ( ccm ) were given respectively 文中分別給出了反激逆變器斷續(xù)及連續(xù)模式下的電路參數(shù)設(shè)計準則。
Hfl inverters in discontinuous current mode ( dcm ) are extended to those in continuous current mode ( ccm ) , which is very important for improving the conversion efficiency . the reason is that the peak current and rms current of power switches can be reduced sharply 本文將工作于dcm方式的單級高頻鏈逆變電路擴寬到ccm工作方式,仿真和試驗結(jié)果表明ccm模式下流過功率管電流峰值和有效值明顯減小,這對提高逆變電路的效率具有重要意義。
A novel parallel - serial type cttfc ( combined two - transistor forward converter ) with coupled inductor is present in this paper , and the performance of three parallel - serial type cttfcs is studied and compared . the performance of cttfc with coupled inductor is similar to the other two cttfcs while coupling coefficient is less than one and the converter working ccm ( continuous current mode ) , and input - to - output voltage gain increase one times while coupling coefficient is one 本文提出了一種耦合電感并?串型雙管正激組合變換器,并對三種并?串型組合變換器的特性作了比較:耦合系數(shù)小于1且耦合線圈電流連續(xù)時,三種并?串型組合變換器特性相類似:耦合系數(shù)為1時,組合變換器輸入輸出電壓增益增大一倍。
The author of the dissertation pay a lot efforts to focus on designing the dual - loop control circuit based on optimized psm , include : 1 ) . researched the relationship of input and output voltage and output valtage ripple , when psm operate in continuous current mode and discontinuous current mode respectively . what we have done will direct psm apply to converter 本文在psm調(diào)制理論的基礎(chǔ)上,設(shè)計基于優(yōu)化psm調(diào)制模式的雙環(huán)控制電路,主要包括以下幾個方面內(nèi)容: 1 )對psm調(diào)制模式分別在連續(xù)和斷續(xù)工作模式下的輸入輸出電壓關(guān)系以及輸出電壓紋波進行研究,以期指導psm調(diào)制模式在變換器中的應用。
From the view point of the whole topologies of current mode hfl inverters , two topologies of half - bridge and push - pull current mode hfl inverters are proposed , which are composed of four power switches . hfl inverters in discontinuous current mode ( dcm ) are extended to those in continuous current mode ( ccm ) 從完善電路拓撲和降低成本的角度出發(fā),本文提出了兩種結(jié)構(gòu)的電流源高頻鏈逆變電路,它們分別是由四個功率管組成的半橋和推挽雙向電流源高頻鏈單級逆變電路,并將工作在電感電流斷續(xù)模式的逆變電路擴展到電感電流連續(xù)模式。