Boost变换器跨周期调制(PSM)的状态空间平均模型
Space State Average Model of PSM in Boost Converter
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摘要: 基于Boost变换器,利用状态空间平均法对跨周调制(Pulse Skipping Modulation,PSM)进行建模和特性分析,推导出电感电流连续(CCM)和电感电流断续(DCM)时系统变压比,调制度M与负载的关系及系统转换效率的理想化公式,得到PSM具有轻载下高转换效率的结论,并设计具有PSM调制特性的控制电路,给出仿真结果。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]罗萍,熊富贵,李肇基, 陈光 ..开关变换器的跨周期调制模式[J].电子与信息学报.2004, 26(6):984-988浏览[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]张占松,蔡宣三. 开关电源的原理与设计. 北京:电子工业出版社, 2001: 303-314.[7]罗萍. 智能功率集成电路的跨周调制PSM及其测试技术研究. [博士论文], 电子科技大学, 2004.3.
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