Abstract: An off-grid system for generating electrical energy for feeding an external load includes at least one electric generator operatively connected to a driven shaft of an external driving power source and further connected to an isolated load by an electrical circuit, a control unit connected to the electrical circuit to detect the output voltage produced by the generator, and a fluxation regulation system connected to the electrical circuit to control the fluxation and stabilize the voltage produced by the generator. The control unit is connected to the fluxation regulation system to control the activation thereof and the generator is of the reluctance synchronous type and includes a squirrel cage structure. A method for controlling the fluxation of electrical energy by the electrical energy generation system.

Abstract: An electric drive unit for driving devices connectable therewith includes at least one permanent magnets assisted reluctance motor and switching elements operatively associated to the at least one reluctance synchronous motor and designed to switch the connection of the stator windings between a first operating configuration and a second operating configuration, and vice versa, for variable torque and power delivery as a function of the rotation speed of the at least one reluctance synchronous motor.

Abstract: An electric generator (1) for the conversion of energy from a renewable energy source, such as wind energy, into electrical energy to be inserted into a local or remote network (R), which comprises a rotary electric machine (2) provided with means (3) for drawing energy from the renewable source and for converting into electrical energy, first control means (4) for regulating the functioning parameters of the machine (2), second control means (5) for regulating the parameters of the electrical energy generated by the machine (2), and connection means (6) for electrically connecting the second control means (5) to the network (R), wherein the machine (2) is positioned in a space (V) placed at a predetermined distance (h) with respect to a base (B) that is fixed or anchorable with respect to the ground (T).

Abstract: A movement control system for a drilling plant includes a first hydraulic circuit with an inlet duct and an outlet duct for a working fluid, a pumping device of reversible type promoting the circulation of the fluid, first electric machine mechanically coupled to the pumping device to promote circulation of the fluid in the first hydraulic circuit, wherein the first electric machine is connected to an electric circuit connectable to the net or to an electric accumulator. The first electric machine selectively operates as an electric motor to promote circulation of the fluid in a first sense and to drive the actuating means during the rise of the drilling head, and as an electric generator upon fluid flow in a second, opposite sense during the lowering of the drilling head to inject in the network or in the accumulator the electric power generated by the first machine.

Abstract: A method for controlling a motor by an inverter and by a vectorial technique, comprising the following steps: determining the value of a quadrature current Iq necessary for said motor to generate the desired torque; calculating the value of a direct current to be supplied to the motor by an equation as a function of the phase of the current vector on which the torque constant of the motor depends; calculating the power current of said motor from the direct current and the quadrature current; supplying the power current to the motor through the inverter.

Abstract: An electric energy generator includes a driving shaft designed to be coupled to an external energy source having a predetermined torque, a synchronous reluctance rotating electric machine having a stator and a transverse-laminated rotor, and a driven shaft operatively coupled to the drive shaft for generating electric energy with a predetermined torque ripple amplitude, an electric connection for injecting the electric energy so generated into the net, a control system designed to adjusting electrical and dynamic parameters of the electric machine. The stator has an even number of longitudinal grooves for each pair of poles and the rotor has a plurality of adjacent slots defining an even number of magnetically equivalent slots. The number of grooves is different from the number of equivalent slots multiplied by an integer, the difference between the number of grooves and the number of equivalent slots being different form zero, +2 and ?2.

Abstract: A cooling device for electronic components includes a substantially prismatic body made of a thermally conductive material, which has a pair of substantially planar main outer surfaces and encloses therein at least one circuit for the flow of a cooling fluid. Both main outer surfaces are designed to allow removable attachment of an electronic component to be cooled. A control apparatus incorporating the device.

Abstract: A synchronous reluctance motor comprises a stator (2) having at least one pair of poles and a plurality (ns) of grooves (3) for each pair of poles, a transverse-laminated rotor (5) with a plurality of disk-line sheet metal members (7, 7?, 7?, . . . ) of predetermined outside diameter (D), each having a plurality of adjacent slots (8, 8?, . . . ; 9, 9?, . . . ; 10, 10?, . . . ; 11, 11?, . . . ) and a central through hole (12) of predetermined inside diameter (d), each slot (8, 8?, . . . ; 9, 9?, . . . ; 10, 10?, . . . ; 11, 11?, . . . ) having a substantially curved elongate shape, symmetrical with respect to a radius, with end portions closed at the edge (13) of a corresponding sheet element (7, 7?, 7?, . . . ) to define corresponding ribs (14, 14?, 14?), which are adapted to be magnetically saturated to be equivalent to rotor slots. At least one first portion of the sheet elements (7, 7?, 7?, . . . ) has a ratio of the inside diameter (d) to the outside diameter (D) equal to or greater than 0.

Abstract: A method for controlling a motor by an inverter and by a vectorial technique, comprising the following steps: determining the value of a quadrature current Iq necessary for said motor to generate the desired torque; calculating the value of a direct current to be supplied to the motor by an equation as a function of the phase of the current vector on which the torque constant of the motor depends; calculating the power current of said motor from the direct current and the quadrature current; supplying the power current to the motor through the inverter.