Boost變換器跨周期調(diào)制(PSM)的狀態(tài)空間平均模型
基金項(xiàng)目:
國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目（60436030）資助課題
Space State Average Model of PSM in Boost Converter
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摘要: 基于Boost變換器，利用狀態(tài)空間平均法對(duì)跨周調(diào)制(Pulse Skipping Modulation，PSM)進(jìn)行建模和特性分析，推導(dǎo)出電感電流連續(xù)(CCM)和電感電流斷續(xù)(DCM)時(shí)系統(tǒng)變壓比，調(diào)制度M與負(fù)載的關(guān)系及系統(tǒng)轉(zhuǎn)換效率的理想化公式，得到PSM具有輕載下高轉(zhuǎn)換效率的結(jié)論，并設(shè)計(jì)具有PSM調(diào)制特性的控制電路，給出仿真結(jié)果。Abstract: Based on boost converter, a new mode named PSM is modeled and analyzed using space state average method. Some useful formulae such as output voltage ratio, relationship between modulation factor and load, conversion efficiency are given in this paper. The conclusion can be easily got that PSM is an available control mode with high efficiency, especially for converter with light loads. The simulation results are given by designing the control circuit with PSM characteristic.
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Luo Ping, Luo Luyang, Li Zhaoji, Chen Guangj. Skip cycle modulation in switching DC-DC converter. IEEE 2002 International Conference on Communications, Circuits and Systems, Chengdu , China, 29 June-1 July, 2002: 1716-1719.[2]羅萍，熊富貴，李肇基, 陳光 ..開關(guān)變換器的跨周期調(diào)制模式[J].電子與信息學(xué)報(bào).2004, 26(6):984-988瀏覽[3]Luo Ping, Li Zhaoji, Xiong Fugui, Chen Guangj. Fuzzy[4]pulse skip modulation mode in DC/DC converter. 2004 IEEE International Power Electronics Congress, CIEP'04, Celaya, Mexico, 17-22, October, 2004: 87-91.[5]Middlebrook R D, Cuk S. A general unified approach to modeling switching converter power stages, in Proc. IEEE Power Electronics Specialists Conf, 1976: 18-34.[6]張占松，蔡宣三. 開關(guān)電源的原理與設(shè)計(jì). 北京：電子工業(yè)出版社, 2001: 303-314.[7]羅萍. 智能功率集成電路的跨周調(diào)制PSM及其測(cè)試技術(shù)研究. [博士論文], 電子科技大學(xué), 2004.3. -
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