Frequency Stability of Synchronous Machines and Grid-Forming Power Converters

Frequency support characteristics of grid- interactive power converters based on the synchronous power controller

Grid-interactive converters with primary frequency control and inertia emulation have emerged and are promising for future renewable generation plants because of the contribution in power system stabilisation. This study gives a synchronous active power control solution for grid-interactive converters, as a way to emulate synchronous generators for inerita characteristics and load sharing. As d...

Modeling of Grid-connected Superconducting Synchronous Machines

We developed an accurate, efficient and flexible modeling method for the steady-state and transient analysis of grid-connected superconducting synchronous machines. On the one hand, the machine flux linkages and electromagnetic torque as function of operational parameters are obtained from static finite element analysis and stored in lookup tables. On the other hand, the machine is represented ...

Power Converters for Grid Integration of Wind Power Systems

This paper presents the different power converters for grid integration of wind power systems. In wind power systems while integrating with grid, power quality issues are becoming more predominant. This can solve by using power electronics converters like two level back to back converter and matrix converters. Converters are compared on the basis of efficiencies, voltage conversion ratios and T...

Grid-voltage Synchronization Algorithms Based on Phase-locked Loop and Frequency-locked Loop for Power Converters

Adaptive Nonlinear Control of Multiphase Synchronous Buck Power Converters

The problem of controlling multiphase synchronous buck power converters is considered. The aim is to regulate the output voltage of the converter and to ensure an adequate current sharing between its different channels. The control law is designed from the large-signal bilinear model (of the whole multichannels converter) using the backstepping technique. The obtained regulator is shown to meet...