Jul 2026· International Conference on Control, Decision and Information Technologies· pp. 1543-1547· 0 citations· 8 references
Abstract
The recent trend of encouragement to renewable integration has resulted in an inverter-dominated hybrid grid. The time-scale of such integrated grid activities and its response time varies in a wide range. In such a scenario, the first challenge is to have a model that can capture both the dynamics of fast as well as slow components, and the second is stability analysis without compromising its time-varying impact. To address these issues, the paper includes the Port-Controlled Hamiltonian (PCH) Inverter formulation related to a interdisciplinary model for voltage stability analysis of inverter-dominated distribution grids. The interactions between slow network, load dynamics, intermediate converter-control dynamics, and fast electromagnetic states can be captured in the model. The PCH formulation provides an energy-based representation of the inverter dynamics, enabling systematic analysis of transient voltage response and post-disturbance recovery in inverter-integrated power systems. MATLAB is used to validate the proposed methodology in weak-grid and load-varying scenarios. A new PCH-based controller has been designed to tune the inverter PWM signal so that voltage stability can be supported to maintain the grid voltage profile.
Strong power system infrastructure is more important than earlier due to the growing demand for electricity in the generating, transmission, and distribution sectors. Specifically, the extensive and uncontrolled usage of both linear and nonlinear loads in distribution networks creates significant power quality issues....
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