In this study, using robust and adaptive approaches, two controllers are designed to compensate for the applied load and input voltage uncertainties of a high voltage gain dc–dc converter. These controllers are designed based on measuring only the output voltage of the converter. The permissible ranges of the uncertainties are calculated using dynamics equations analysis while practical limitations are considered. In the first approach, an input multiplicative uncertainty is considered for the model of the converter by linearisation of non-linear equations as well as using permissible ranges of the uncertainty. Then, a robust H_∞ controller is designed. In the second approach, the converter model is considered as a first-order dynamics model with the unknown parameters and an unknown additive term while a direct robust model reference adaptive controller is designed for it. Finally, the non-linear equations of the converter are simulated and the performances of the controllers are compared with each other. The control methods are then implemented on a 200 W prototype of a converter for evaluating the simulations results.

中文翻译：

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在施加负载和输入电压不确定性的情况下，高增益DC-DC转换器的鲁棒输出电压控制

在这项研究中，使用鲁棒性和自适应方法，设计了两个控制器来补偿高电压增益dc-dc转换器的施加负载和输入电压不确定性。这些控制器是基于仅测量转换器的输出电压而设计的。使用动力学方程分析计算不确定性的允许范围，同时考虑实际限制。在第一种方法中，通过非线性方程式的线性化以及使用不确定性的允许范围，为转换器的模型考虑了输入乘法不确定性。然后，健壮^ h _∞控制器的设计。在第二种方法中，转换器模型被视为具有未知参数和未知加性项的一阶动力学模型，而为此设计了直接鲁棒模型参考自适应控制器。最后，仿真了转换器的非线性方程，并比较了控制器的性能。然后，在转换器的200 W原型上实施控制方法，以评估仿真结果。