全橋推挽式雙向DC/DC變換器的建模與控制
張俊輝1,唐雄民1,張淼1,孫君光2
(1 廣東工業(yè)大學 自動化學院,廣東 廣州 510006;2 廣州擎天實業(yè)有限公司,廣東 廣州 510300)
摘 要:全橋推挽式雙向DC/DC變換器大都采用狀態(tài)空間平均法來建模,建模過程復雜。以隔離型推挽式雙向DC/DC變換器為研究對象,采用PWM開關(guān)模型法獲得了變換器的等效電路模型?;谠摰刃P停瑯?gòu)建了變換器在不同工作模式下的閉環(huán)控制系統(tǒng),進行了電壓控制環(huán)的設(shè)計和校正,實現(xiàn)了不同工作模式下的恒壓充放電控制策略。實驗和仿真結(jié)果驗證了結(jié)論的正確性。
關(guān)鍵詞:全橋推挽;PWM開關(guān)模型;恒壓控制
中圖分類號:TM464 文獻標識碼:A 文章編號:1007-3175(2017)11-0014-04
Modeling and Control of Full Bridge Push-Pull Bi-Directional DC/DC Converter
ZHANG Jun-hui1, TANG Xiong-min1, ZHANG Miao1, SUN Jun-guang2
(1 School of Automation, Guangdong University of Technology, Guangzhou 510006, China;
2 Guangzhou Kinte Industrial Co., Ltd, Guangzhou 510300, China)
Abstract: Full bridge push-pull bi-directional DC/DC converters are mostly modeled by state space averaging method with the complex modeling process. Taking the isolated form push-pull bi-directional DC/DC converter as the research object, this paper adopted the pulse-width modulation switch model method to obtain the equivalent circuit model of this converter. Based on this model, this paper constructed a closedloop control system of the converter under different working modes, carried out the design and verification of voltage control loop and realized the constant voltage charge-discharge control strategy. The experimental and simulation results verify the correctness of the conclusion.
Key words: full bridge push-pull; pulse-width modulation switch model; constant voltage control
參考文獻
[1] 王成悅,張興,楊淑英,等. 電動汽車對稱半橋DC/DC變換器的建模和控制[J]. 電力電子技術(shù),2008,42(10):27-30.
[2] 武琳,張燕枝,李子欣,等. 一種隔離式雙向全橋DC/DC變換器的控制策略[J]. 電機與控制學報,2012,16(10):22-30.
[3] 畢超,肖飛,趙繼敏,等.DC-DC開關(guān)電源的建模與控制設(shè)計[J]. 電源技術(shù),2014,38(2):359-362.
[4] 羅詠. 雙向DC/DC變換器及電池能量管理系統(tǒng)研究[D]. 武漢:華中科技大學,2010.
[5] 孫路,陸亭華,謝幀.BUCK變換器狀態(tài)空間平均法建模與閉環(huán)仿真[J]. 電氣自動化,2014,36(4):1-4.
[6] 宴坤,王輝,漆文龍,等. 微電網(wǎng)儲能系統(tǒng)中基于PWM加雙重移相控制的雙向DC/DC變換器研究[J].電力自動化設(shè)備,2015,35(4):44-51.