Digital control for high switching frequency converter enables new features on DC-DC power conversion for a minimum cost. Frequency response identification is one such enabled functionality used in auto tunning, measurement of components to assess the converter’s state of health, or system stability monitoring. High accuracy, flexibility to operate in open or closed loop, and minimum impact in the converter’s regular operation are the frequency response identification system’s goals. We propose in this paper a nonparametric identification system addressing these main goals. First, it can autoadjust the perturbation size to reduce the perturbation’s impact on the converter’s output quantities. Second, as it is based on spectral analysis, it is suitable for open and closed-loop operation. Third, we demonstrate the identification system’s high accuracy, achieving a very low difference between the experimental measurements and the discrete model used as reference.

中文翻译：

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自动确定扰动幅度的基于频谱分析的Dc-Dc变换器参数化频率响应辨识

高开关频率变频器的数字控制以最小的成本实现了DC-DC电源转换的新功能。频率响应识别就是这样一种启用的功能，可用于自动调试，组件评估以评估转换器的健康状态或系统稳定性监视。频率响应识别系统的目标是高精度，开环或闭环操作的灵活性以及对变频器正常运行的影响最小。我们在本文中提出了解决这些主要目标的非参数识别系统。首先，它可以自动调整扰动大小，以减少扰动对转换器输出量的影响。其次，由于它基于频谱分析，因此适用于开环和闭环操作。第三，