數(shù)字控制級(jí)聯(lián)式雙向DC-DC變換器的研究

摘要：本文對(duì)由Buck/Boost 雙向變換器與雙向半橋直流變換器構(gòu)成的級(jí)聯(lián)式雙向DC-DC變換器的原理進(jìn)行了分析，并研究了一種適用于Boost變換器的無(wú)源軟開(kāi)關(guān)電路。在數(shù)字控制的硬件平臺(tái)之上,提出一端穩(wěn)壓和一端穩(wěn)流的控制策略，可實(shí)現(xiàn)能量雙向流動(dòng)的自由轉(zhuǎn)換。最后給出了實(shí)驗(yàn)波形，從而對(duì)理論分析進(jìn)行了驗(yàn)證。 敘詞：雙向DC-DC變換器 無(wú)源軟開(kāi)關(guān) 數(shù)字信號(hào)處理器 控制策略 Abstract：Two-stage Bi-directional DC-DC Converter which was composed of Buck/Boost BDC and bidirectional Half-Bridge DCT was described , a novel reactive-soft-switching boost converter was also introduced in this article. An experimental prototype of bidirectional DCDC converter controlled by DSP is designed. A novel control scheme adopting one port voltage regulated and another port current regulated is proposed to realize the energy conversion in bi-directional freely. In the last, experimental waves verify the theory. Keyword：Bi-directional DC-DC Converter; novel reactive-soft-switching; digital signal processor; control strategy