Patent ID: 8687396

Claim:
Method for the regulation of power in an alternating current electrical network (ACNW; ACNW 1 , ACNW 2 ), using a conversion system (PCS) having at least two terminals ( 1 , 2 ; 1 , 2 , 3 ; 1 , 2 , 3 ,N) for connection to the network, wherein each of said terminals has a corresponding electrical potential; each of the potentials of said terminals has an upper and a lower envelope, the difference between which, or envelope voltage (V EP,EN ) is a variable positive continuous quantity, having a maximum value (V EA ) called the envelope amplitude; the method comprising the operations of: defining at least an upper range (ER) of voltage values, comprising said maximum value or envelope amplitude (V EA ) and having a width (V E; V EE ) which is substantially smaller than the envelope amplitude (V EA ); using said conversion system (PCS) including at least a first static converter (ES) capable of regulating the electrical power by the regulation of said width (V E ; V EE ) in the aforesaid upper range (ER); said upper range (ER) having said width determined in such a way that said at least one static converter (ES) regulates more than one half of the mean active electrical power exchanged with the network (ACNW; ACNW 1 , ACNW 2 ) wherein at least a second static converter system (TS) is used to regulate the electrical power in a lower range (TR) of voltage values, known as the transition range.