| 一种数字控制三相逆变电路的局部振荡行为分析 |
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| 引用本文： | 雷博,肖国春,吴旋律. 一种数字控制三相逆变电路的局部振荡行为分析[J]. 物理学报, 2013, 62(4): 40502-040502. DOI: 10.7498/aps.62.040502 |
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| 作者姓名： | 雷博 肖国春 吴旋律 |
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| 作者单位： | 西安交通大学电气工程学院, 电力设备电气绝缘国家重点实验室, 西安 710049 |
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| 基金项目： | 国家自然科学基金(批准号:50877065,51277146)和台达电力电子科教发展计划(批准号:DREG2011003)资助的课题. |
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| 摘 要： | 针对数字控制三相逆变系统, 对其在同步旋转坐标系比例控制下的局部振荡行为进行了分析.通过建立系统各个状态变量离散迭代方程, 针对这个高阶系统提出了各种不稳定行为的解析判别式. 以此为基础,得到了系统产生局部振荡的条件,以及控制参数与局部振荡点的关系. 最后,通过Simulink仿真以及电路实验证明了理论分析的正确性以及有效性. 研究结果揭示了三相逆变系统的运动行为及各相之间的内在耦合关系, 并准确地描述了系统产生的局部振荡现象.关键词：三相逆变电路数字控制运动行为局部振荡
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| 关 键 词： | 三相逆变电路 数字控制 运动行为 局部振荡 |
| 收稿时间： | 2012-07-10 |
Analysis of partial oscillation phenomenon in a digital-controlled three-phase inverter |
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| Lei Bo,Xiao Guo-Chun,Wu Xuan-L,#,. Analysis of partial oscillation phenomenon in a digital-controlled three-phase inverter[J]. Acta Physica Sinica, 2013, 62(4): 40502-040502. DOI: 10.7498/aps.62.040502 |
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| Authors: | Lei Bo Xiao Guo-Chun Wu Xuan-L&# |
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| Affiliation: | State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China |
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| Abstract: | A partial oscillation phenomenon in a digital-controlled three-phase inverter system, which is controlled by proportional controller in synchronous rotating reference frame, is analyzed in this paper. First, the discrete-time model of the system is derived. Then, a dynamics analysis scheme for this type of system is proposed. In addition, the underlying mechanism of the partial oscillation phenomenon occurring in this system is analyzed. The factors, which will cause the partial oscillation, are exactly predicted by analytical expressions. Finally, the theoretical results are verified by both simulations and experiments. These conclusions can provide an insight into the dynamics of the system. |
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| Keywords: | three-phase inverter digital-controlled dynamic behavior partial oscillation |
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