| 带恒功率负载的DC/DC变换器起动过程分析 |
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| 引用本文： | 王建华,张方华,龚春英,朱成花.带恒功率负载的DC/DC变换器起动过程分析[J].电工技术学报,2009,24(4). |
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| 作者姓名： | 王建华 张方华 龚春英 朱成花 |
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| 作者单位： | 1. 南京航空航天大学航空电源航空科技重点实验室,南京,210016
2. 通用电气中国研发中心,上海,201203 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，台达环境与教育基金会资助项目 |
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| 摘 要： | 以平均电流控制Buck变换器为研究对象,基于平均大信号模型,借助相平面法,对恒功率负载以及阻性负载的起动过程进行比较,分析了两种情形下的起动过程,揭示了变换器带恒功率负载起动过程存在两种类型:正常起动与限流工作状态,通过提高电流限流点可以确保系统集成后起动性能不受影响.仿真与实验结果验证了理论的正确性.
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| 关 键 词： | 平均大信号模型 相平面法 恒功率负载 起动过程 |
Start-Up Process Analysis of DC/DC Converter With Constant Power Load |
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| Wang Jianhua,Zhang Fanghua,Gong Chunyin,Zhu Chenghua.Start-Up Process Analysis of DC/DC Converter With Constant Power Load[J].Transactions of China Electrotechnical Society,2009,24(4). |
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| Authors: | Wang Jianhua Zhang Fanghua Gong Chunyin Zhu Chenghua |
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| Abstract: | With average large signal model and phase plane method,the start-up processes of average current mode controlled buck converter with both constant power load and resistive load are analyzed.The analysis indicates that there are two kinds of process that are normal start-up and current-limited processes when converter operates as constant power load,which are determined by the current-limited value of source converter.Finally,the theoretical analysis is confirmed with simulation and experimental results. |
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