Recent Advances in Passivity-Based Control of Grid-Connected Converters-Video

Abstract:Increasing the integration of renewable energy sources has become a crucial pathway for decarbonizing power systems. As the interface between renewable generation and the power grid, grid-connected converters play a vital role in ensuring efficient and reliable power conversion. However, due to digital PWM, significant delays are introduced in the control loop leading to negative damping and harmonic instability when operating under widely varying grid impedances. Passivity-based control presents a promising solution for shaping the output impedance of grid-connected converters. Specifically, the resistance of the output impedance should remain nonnegative across all frequencies, thus ensuring stable operation according to the Nyquist stability criterion. Over the past decade, the application of passivity-based control in grid-connected converters has seen significant progress. Early efforts focused on capacitor current damping, while recent advancements have expanded toward wideband damping and cost-effective implementations. To further drive advancements in passivity-based control, this webinar will explore recent applications in various contexts including repetitive control, harmonic control, voltage regulation, and wideband damping strategies.