Two circuits , characterized by high power factor and low output voltage , are proposed . one is originated from the concept of charge pump , and the other functions in the same principle with so - called buck - boost circuits 最后提出了兩種功率因數(shù)校正的電路拓撲:一種是由電荷泵原理引出的;另一種是基于buck - boost原理工作的電路。
This paper with the help of the m file and simulink toolbox in the matlab simulate the buck - boost circuit system dynamicly . the large amount of dynamic simulation figures given in this paper verified the correction of the results of theoretical analysis 本文利用matlab中的m文件和simulink工具對buck - boost電路系統(tǒng)進行了動態(tài)仿真,改變系統(tǒng)中的各個參變量,觀察并對比其動態(tài)變化規(guī)律,文中給出了大量的仿真圖形,驗證了理論分析的正確性。
In this dissertation , a novel bidirectional dc / dc converter ' s topology was designed , witch used in vehicle power supply systems . the converter is composed of fundamental bidirectional switch cell , using phase - shifted full - bridge zvs pwm dc / dc converter in buck circuit and using push - pull boost converter in boost circuit 文中從雙向dc dc變換基本單元入手,針對某大型車載電源系統(tǒng)設(shè)計了一種新型雙向dc dc變換器拓撲電路,降壓變換采用移相全橋式zvs ? pwm功率變換,升壓變換采用推挽式dc dcboost功率變換。