This paper depicts a self-tuning adaptive control method along with a novel robust procedure to system identification which is applied to a single-phase full-bridge Inverter with LC filter by Pulse Width Modulation (PWM). Moreover, an LC filter is designed to decrease the disturbing harmonics produced by PWM which, the stability of the filter can be noted as an important issue. On the other hand, a dynamic change of the inverter can lead to instability issues in which the proposed approach can overcome this problem and perform with a great response. Due to the parametric uncertainty on a full-bridge inverter and other disturbing factors, a digital adaptive controller is proposed which is performed by minimum degree pole placement (MDPP) technique combined with Improved Exponential Regressive Least identification (IERLS) algorithm. To prevent the undesired influences of high variance noises and disturbance on the performance of the identification approach, a robust identification algorithm is introduced which is capable of keeping the parametric estimation process in a desired range. Additionally, to deal with the variations of supply DC voltage, a proportional-integral-derivative (PID) controller is designed. Finally, the experimental and simulation results are performed by Matlab-Simulink to show the validation of the work.

中文翻译：

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单相全桥逆变器的鲁棒自调整调节器自适应控制器设计

本文描述了一种自调谐自适应控制方法，以及一种新颖的鲁棒性系统辨识程序，该方法已通过脉宽调制（PWM）应用于带有LC滤波器的单相全桥逆变器。此外，LC滤波器的设计旨在减少PWM产生的干扰谐波，因此可以将滤波器的稳定性视为重要问题。另一方面，逆变器的动态变化会导致不稳定性问题，其中所提出的方法可以克服该问题并以很高的响应速度执行。由于全桥逆变器的参数不确定性和其他干扰因素，提出了一种数字自适应控制器，该控制器通过最小度极点放置（MDPP）技术与改进的指数回归最小识别（IERLS）算法相结合来实现。为了防止高方差噪声和干扰对识别方法的性能产生不良影响，引入了一种鲁棒的识别算法，该算法能够将参数估计过程保持在所需范围内。另外，为了应对电源直流电压的变化，设计了比例积分微分（PID）控制器。最后，由Matlab-Simulink执行了实验和仿真结果，以证明工作的有效性。设计了比例积分微分（PID）控制器。最后，由Matlab-Simulink执行了实验和仿真结果，以证明工作的有效性。设计了比例积分微分（PID）控制器。最后，由Matlab-Simulink执行了实验和仿真结果，以证明工作的有效性。