Robust Virtual Inertia Control of a Low Inertia Microgrid

In modern microgrids with high renewable penetration, maintaining frequency stability is a critical challenge. Renewable sources lack inherent inertia, making systems more prone to frequency fluctuations. To counter this, Virtual Inertia Control is implemented. However, conventional methods often rely on Phase-Locked Loops, or PLLs, which introduce measurement delays and unwanted oscillations.

Now, let’s dive into our MATLAB simulation, where we model a low-inertia microgrid using renewable sources. Our simulation includes three control approaches: conventional Virtual Inertia Control, an optimized PI-based control, and the proposed robust H-infinity control.

We introduce system uncertainties, disturbances, and measurement delays to evaluate the effectiveness of each method