Tuning of Cascaded Controllers for Robust Grid-Forming Voltage Source Converter
TypeCommunications avec actes
From the origin of the grid, energy has been delivered to electrical loads mainly by synchronous machines. All the main rules to manage the grid have been based on the electromechanical behavior of these machines which have been extensively studied for many years. Due to the increase of HVDC link and renewable energy sources as wind turbine and PV, power converters are massively introduced in the grid with a fundamentally different dynamic behavior. Some years ago, they were connected as simple power injector. Then, they were asked to provide some ancillary services to the grid, in the future, grid forming capability will be required. Even if grid-forming converters had been extensively studied for microgrids and offshore grids, it has to be adapted to transmission grid where the topology may be largely modified. This paper presents an algorithm for calculating the controller parameters of a grid-forming converter which guarantee a stable behavior for many different configurations of the grid.
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QORIA, Taoufik; GRUSON, François; COLAS, Frédéric; GUILLAUD, Xavier; DEBRY, Marie-Sophie; PREVOST, Thibault (IEEE, 2018)From the origin of the grid, energy has been delivered to electrical loads mainly by synchronous machines. All the main rules to manage the grid have been based on the electromechanical behavior of these machines which ...
Inertia effect and load sharing capability of grid forming converters connected to a transmission grid QORIA, Taoufik; GRUSON, François; COLAS, Frédéric; DENIS, Guillaume; PREVOST, T.; GUILLAUD, Xavier (2019)The virtual synchronous machine concept (VSM) has been developed initially to reproduce the synchronous machine stabilizing effect by providing inertia with the emulation of swing equation, whereas droop control is developed ...
QORIA, Taoufik; LI, Chuanyue; OUE, Ko; GRUSON, François; COLAS, Frédéric; GUILLAUD, Xavier; PREVOST, Thibault (IEEE PES PowerTech 2019, 2019)In the near future, power converters will be massively introduced in transmission grids due to renewable energy sources and high voltage direct current (HVDC) increase. Voltage Source Converter (VSC) control laws assume ...
QORIA, Taoufik; PREVOST, Thibault; DENIS, Guillaume; GRUSON, François; COLAS, Frédéric; GUILLAUD, Xavier (EPE'19 ICCE EUROPE, 2019)Because of the throng of control strategies based Voltage Source Converters (VSC) recently proposed in the literature; their classification and characterization are becoming a trending topic. The high similarities of the ...
Critical clearing time determination and enhancement of grid-forming converters embedding virtual impedance as current limitation algorithm QORIA, Taoufik; GRUSON, François; COLAS, Frédéric; DENIS, Guillaume; PREVOST, Thibault; GUILLAUD, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 2019)The present paper deals with the post-fault synchronization of a voltage source converter based on the droop control. In case of large disturbances on the grid, the current is limited via current limitation algorithms such ...