Abstract: The application relates to a method for controlling a microgrid (10) comprising the steps of: maintaining a switching device (60) connecting two busbars (30, 40) of the microgrid (10) and a circuit breaker (20) connecting the microgrid (10) to a utility grid (100) closed, the microgrid (10) being operated in a grid connected mode; measuring (202) a voltage present in the microgrid (10); determining (205) if the measured voltage corresponds to a loss of voltage or a fault in the microgrid (10); and if a the loss of voltage or fault is detected in the microgrid (10), opening (210) the switching device (60), the critical loads being supplied by the battery energy storage system (50) and the circuit breaker (20) remaining closed during (215) at least a fault ride through period.

Abstract: The application relates to a method for protecting a microgrid from a voltage drop or sag occurring in a main grid connected to said microgrid, the method comprising the following steps: a. supplying (105) power to the microgrid through the main grid; b. ascertaining that the voltage drop or sag is occurring in the main grid by executing the following steps: i. measuring (110) an instantaneous output voltage; ii. comparing (130) the measured instantaneous output voltage with a reference instantaneous output voltage; iii. Incrementing (140) a counter when the measured instantaneous output voltage differs from the reference instantaneous output voltage by more than a voltage threshold; and iv. ascertaining (150) that the voltage drop or sag is occurring in the main grid when the counter holds a value that exceeds a counter threshold; and c. disconnecting the microgrid from the main grid when the voltage drop or sag occurring in the main grid has been ascertained.

Abstract: In brief, the invention relates in particular to a converter (100) comprising a plurality of rectifier arms (110), making it possible in particular to rectify AC electrical signals available on the electrical phases (U, V, W) of an electrical grid. To balance the electrical signals coming from the electrical phases (U, V, W) of the electrical grid, and to limit a modulation amplitude of the DC signal generated by the converter (100) between its output terminals (S1, S2), the converter (100) also comprises a correction arm (120) that determines an amplitude of electric current flowing in a neutral (N) of the electrical grid and that generates an opposing electric current of equal or if not close amplitude. The invention also relates to a two-way charger (10) comprising such a converter (100) and one or more active double bridges (200), such that an output (S3, S4) of the active double bridges (200) is electrically isolated from the converter (100).

Abstract: In brief, the invention relates in particular to a converter (100) comprising a plurality of rectifier arms (110), making it possible in particular to rectify AC electrical signals available on the electrical phases (U, V, W) of an electrical grid. To balance the electrical signals coming from the electrical phases (U, V, W) of the electrical grid, and to limit a modulation amplitude of the DC signal generated by the converter (100) between its output terminals (S1, S2), the converter (100) also comprises a correction arm (120) that determines an amplitude of electric current flowing in a neutral (N) of the electrical grid and that generates an opposing electric current of equal or if not close amplitude.

Abstract: A method controls a microgrid having at least one renewable plant of distributed renewable energy resources and at least one generator plant of distributed non-renewable energy resources, and each plant has a local controller. The method includes providing type and power size of each plant to each local controller. At each local controller, measuring the frequency and estimating the total power load demanded based on the measured frequency. At the local renewable controller, decreasing the frequency at which power is supplied when the supplied power falls below the estimated power load and increasing the frequency when the supplied power exceeds the estimated power load. And at the local generator controller, increasing power supply in response to detecting a decrease in frequency, and decreasing power supply in response to detecting an increase in frequency.

Abstract: A method controls a microgrid having at least one renewable plant of distributed renewable energy resources and at least one generator plant of distributed non-renewable energy resources, and each plant has a local controller. The method includes providing type and power size of each plant to each local controller. At each local controller, measuring the frequency and estimating the total power load demanded based on the measured frequency. At the local renewable controller, decreasing the frequency at which power is supplied when the supplied power falls below the estimated power load and increasing the frequency when the supplied power exceeds the estimated power load. And at the local generator controller, increasing power supply in response to detecting a decrease in frequency, and decreasing power supply in response to detecting an increase in frequency.

Abstract: A method for analyzing quality of electrical energy in a three-phase electric network, the method including: measuring a set of electrical magnitudes, the set including one electrical magnitude per phase; forming a space vector from an instantaneous three-dimensional transformation of the set of measured electrical magnitudes; and determining a set including at least one parameter representative of the quality of the electrical energy in the three-phase electric network, according to the space vector.

Abstract: A system is provided for managing services in a living place, including: a supervision system, an anticipative solving system, the anticipative solving system including a processing and memory system for: storing service type problem generators and powers and occupants' satisfaction-related transversal problem generator; collecting service type and related parameters for each service; generating instantiated constraint data for each service according to its type and an anticipative service type problem data based on the constraint data; generating global anticipative problem data; computing set-point data for each service based on the solved global anticipative problem; sending set-point data to the supervision system; and a reactive system adapted to adjust the set-point data computed by the anticipative system depending on the current state of each service.

Abstract: A method for analyzing quality of electrical energy in a three-phase electric network, the method including: measuring a set of electrical magnitudes, the set including one electrical magnitude per phase; forming a space vector from an instantaneous three-dimensional transformation of the set of measured electrical magnitudes; and determining a set including at least one parameter representative of the quality of the electrical energy in the three-phase electric network, according to the space vector.

Abstract: A system is provided for managing services in a living place, including: a supervision system, an anticipative solving system, the anticipative solving system including a processing and memory system for: storing service type problem generators and powers and occupants' satisfaction-related transversal problem generator; collecting service type and related parameters for each service; generating instantiated constraint data for each service according to its type and an anticipative service type problem data based on the constraint data; generating global anticipative problem data; computing set-point data for each service based on the solved global anticipative problem; sending set-point data to the supervision system; and a reactive system adapted to adjust the set-point data computed by the anticipative system depending on the current state of each service.