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基于线性化Poincaré映射模型的非线性电力电子系统控制方法

, PP. 76-82

Keywords: 非线性电力电子系统,周期轨道,Poincaré,映射,动态性能,控制

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Abstract:

进行非线性电力电子系统动态性能分析时,状态空间平均法误差较大,数值仿真法物理概念不清晰。比较而言,Poincaré映射法更准确且可得到解析方程来表示采样时刻离散状态变量的动态响应,但利用该方法进行系统控制还有待于进一步研究。本文考虑控制变量的影响,建立线性化Poincaré映射模型,以系统稳定裕度指标为目标,优化控制参数,建立了基于线性化Poincaré映射模型的非线性电力电子系统控制方法。该方法将Poincaré映射应用于系统控制设计,能够有效提高系统的动态性能。仿真试验验证了算法的有效性。

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