An adaptive multi-resolution simulation (AMRS) framework for fast and accurate simulation of high-fidelity models of power electronic circuits (PECs) is presented in this study. The wide span of eigenvalues makes PEC simulation prohibitively slow. This problem can be tackled using the proposed approach. Singular perturbation approximation is used to extract simplified models by ignoring the transient contribution of the non-dominant eigenvalues. Simplified models of different orders or resolutions, each corresponding to a particular level of accuracy are derived on the fly at no additional computational cost. The simulation engine is set such that it adaptively switches across resolutions based on a predefined tolerance during the simulation. This approach is advantageous in the sense that instead of simulating the original model over the entire time-range, a combination of the original and simplified models is simulated. The combined use of the original and the simplified models is thus shown to be a powerful tool for efficient and accurate simulation of PECs. The examples illustrated, show that the AMRS approach makes the simulation considerably faster and ensures the complete response of the system is obtained with negligible error. The method is illustrated on a Class-E amplifier and a DC-DC buck-boost converter.

中文翻译：

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自适应多分辨率框架，用于电力电子电路的快速仿真

这项研究提出了一种自适应多分辨率仿真（AMRS）框架，用于快速，准确地仿真电力电子电路（PEC）的高保真模型。特征值的宽泛范围使PEC仿真变得异常缓慢。使用建议的方法可以解决此问题。通过忽略非主导特征值的瞬态贡献，奇异摄动近似被用于提取简化模型。无需额外的计算成本即可即时获得不同阶次或分辨率的简化模型，每个模型都对应于特定的精度水平。设置仿真引擎，使其在仿真过程中根据预定义的容差自适应地切换分辨率。从某种意义上说，这种方法是有利的，而不是模拟整个时间范围内的原始模型，而是模拟原始模型和简化模型的组合。因此，原始模型和简化模型的组合使用被证明是有效，准确地模拟PEC的强大工具。所示的示例表明，AMRS方法可使仿真速度大大加快，并确保以很小的误差获得系统的完整响应。该方法在E类放大器和DC-DC降压-升压转换器上进行了说明。结果表明，AMRS方法使仿真速度大大提高，并确保以很小的误差获得系统的完整响应。该方法在E类放大器和DC-DC降压-升压转换器上进行了说明。结果表明，AMRS方法使仿真速度大大提高，并确保以很小的误差获得系统的完整响应。该方法在E类放大器和DC-DC降压-升压转换器上进行了说明。