Combining three themes: port-Hamiltonian energy-based modelling, structural analysis as used in the circuit world, and structural analysis of general differential-algebraic equations, we form a new model for electrical circuits, the compact port-Hamiltonian equations. They have remarkable simplicity and symmetry, and always have index at most 1 and other good numerical properties. The method has been implemented in Matlab. We give proofs and numerical results.

翻译：结合三个主题:港口-汉堡能源建模、电路世界中所使用的结构分析、以及一般差值对位方程式的结构分析,我们形成了一个新的电路模型、紧凑的港口-汉堡方程式。它们非常简单和对称,并且总是有最多1个指数和其他良好的数字属性。该方法已在马特拉布实施。我们给出了证据和数字结果。