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首页> 外文期刊>Power Electronics, IET >Input-output linearisation of a fourth-order input-affine system describing the evolution of a three-phase/switch/level (vienna) rectifier
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Input-output linearisation of a fourth-order input-affine system describing the evolution of a three-phase/switch/level (vienna) rectifier

机译：四阶输入仿射系统的输入输出线性化，描述了三相/开关/电平（天线）整流器的发展

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摘要

This study presents an analytical approach for proper selection of output functions to be regulated for the Vienna rectifier such that the resultant closed-loop systems are minimum phase. Specifically, two different adaptive control methodologies based on the input-output linearisation are developed and categorised. In the first category, three output functions are introduced and imposed to be zero by using three dynamic feedback laws. On the basis of states to be regulated, four different cases are studied and it is shown that only one of these cases results in a one-dimensional zero dynamics with an asymptotically stable equilibrium point. In the second category, two output functions are defined and output zeroing problem is solved with two control inputs. In addition, the remaining control is used to feedback linearise the resultant twodimensional zero dynamics. Eighteen different cases are studied to demonstrate that only in one of these cases, the corresponding zero dynamics is feedback linearisable. Stability properties of the adaptive systems are investigated to show that the proposed adaptive controllers are capable of DC output voltage regulation and power factor correction in the presence of parametric and non-parametric uncertainties. Finally, simulation results are presented to confirm the validity of the developed approaches.
机译：这项研究提出了一种分析方法，可以正确选择要为Vienna整流器调节的输出功能，以使最终的闭环系统为最小相位。具体而言，开发并分类了基于输入-输出线性化的两种不同的自适应控制方法。在第一类中，引入了三个输出函数，并使用三个动态反馈定律将其强加为零。在要调节的状态的基础上，研究了四种不同的情况，结果表明，这些情况中只有一种会导致一维零动力学且具有渐近稳定的平衡点。在第二类中，定义了两个输出函数，并通过两个控制输入解决了输出调零问题。此外，其余控件用于反馈线性化所得的二维零动力学。研究了18种不同的情况，以证明只有在其中一种情况下，相应的零动力学才可以线性反馈。研究了自适应系统的稳定性，表明所提出的自适应控制器能够在存在参数和非参数不确定性的情况下进行直流输出电压调节和功率因数校正。最后，仿真结果表明了所开发方法的有效性。

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