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首页> 外文期刊>Power Electronics, IET >Experimental design of the adaptive backstepping control technique for single-phase shunt active power filters
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Experimental design of the adaptive backstepping control technique for single-phase shunt active power filters

机译：单相并联有源电力滤波器的自适应反步控制技术实验设计

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摘要

In this study, a cascade two-loop non-linear controller is developed for single-phase shunt active power filters which is robust and stable in a wide range of output current and DC-link voltage changes. A variable structure proportional-integral controller is designed to regulate DC-link voltage in the outer loop. Also filter output current is controlled in the inner loop using adaptive backstepping approach. All of the model uncertain parameters are estimated using designed estimation rules. By introduction of suitable Lyapunov functions, proposed controller stability is investigated using Barbalat lemma. Grid reference current is calculated indirectly using a phase-locked loop circuit according to DC-link voltage error. Designed active power filter has been implemented using TMS320F28335 digital signal processor and practical response of the developed controller is studied in some tests. It is shown that the proposed controller is able to eliminate harmonic components of the local load current with a fast dynamic response. Also, compensation capability of the designed non-linear approach is compared with sliding mode controller in similar conditions.
机译：在这项研究中，为单相并联有源功率滤波器开发了一种级联两回路非线性控制器，该控制器在广泛的输出电流和直流母线电压变化范围内都很稳定。可变结构比例积分控制器设计用于调节外环中的直流母线电压。滤波器的输出电流也通过自适应反步方法在内部环路中控制。使用设计的估计规则估计所有模型不确定参数。通过引入合适的Lyapunov函数，使用Barbalat引理研究了拟议的控制器稳定性。使用锁相环电路根据直流母线电压误差间接计算电网参考电流。使用TMS320F28335数字信号处理器实现了设计的有源功率滤波器，并在一些测试中研究了所开发控制器的实际响应。结果表明，所提出的控制器能够以快速的动态响应消除局部负载电流的谐波分量。此外，在类似条件下，将设计的非线性方法的补偿能力与滑模控制器进行了比较。

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