Abstract: System for manufacturing facets comprising a frame a series of mirrors and multiple securing parts in which said parts are the key to the invention and are formed by a rod and a circular metal sheet provided with a series of small circular perforations, where the rod and the circular sheet are attached by electric arc welding or any other equivalent fixation and the purpose of which is to secure a curved mirror to the rear structure or frame of a heliostat.

Abstract: The invention relates to a panel-based solar receiver for a thermal solar tower power plant (4), which comprises: a front panel (8), the external surface of which receives solar radiation (2) from the field of heliostats (3), a back panel (9), sealing elements (10) between the panels (8, 9), arranged at the lateral ends of both, an intake collector (5), located in the upper part of the panels (8, 9), where the heat transfer fluid enters the receiver (1) and an evacuation collector (6), located in the lower part of the panels (8, 9), where the heat transfer fluid leaves the receiver (1); wherein the front panel (8), back panel (9) and the two sealing elements (10) form the receiver body (16), which constitutes a passage for the heat transfer fluid (7) to travel through. Each solar tower can contain one or several panel-based receivers (1) and be arranged in series or in parallel, with the same or a different fluid (7) circulating there through.

Abstract: Novel glass compositions and method for producing a glass/metal join, in which the novel glass comprises: Oxide (%) B2O3 ??8-13.5 Al2O3 5-9 Na2O 3-9 K2O 0-5 CaO 2-4 MgO 0-4 ZnO 0-4 SiO2 Up to 100 depending on the necessary requirements, owing to the significance thereof the thermal expansion coefficient, such that this thermal expansion coefficient is adjusted to match that of the metal part or alloy with which the glass/metal weld is to be achieved, which makes it possible to satisfactorily produce said weld which results in a strong glass/metal join, that is free from tensile stresses and that is durable over time and may be used, inter alia, to obtain parts that form part of solar collectors.

Abstract: A device for transformation of concentrated solar energy including a photovoltaic cell and laser device, which includes a first reflecting mirror adapted for entry of a beam of solar rays and a second reflecting mirror adapted for an outlet of a laser beam, with the first reflecting mirror reflective on an outlet wavelength of the laser beam and transparent to a totality of a solar spectrum and the second reflecting mirror partially reflective on the wavelength of the laser beam, reflective in an interval of the solar spectrum which is absorbed and transparent in other wavelengths different to these, and at the outlet of the laser beam. The device includes a nucleus doped with substances for total or partial absorption of the solar spectrum and coatings.

Abstract: The invention relates to a suitable control method for a system of photovoltaic concentration modules, which can be used to maintain the correct orientation of the modules in order to track the sun without requiring the use of positioning sensors. The sun is tracked by performing angular movements in relation to each of the degrees of freedom at given intervals, measuring the power or current supplied by the energy collection module(s). The estimation of the sun's position and the strategy for subsequent movements are determined as a function of the reading.

Abstract: The invention allows anchoring of a support structure (2) for solar collectors to the ground (1) in a fast, accurate and cost-effective manner, simply and cleanly. The device comprises: at least one pile (3) having a first end (4) adapted for insertion into the ground (1) and a second end (5) projecting from the ground (1); joining means for joining the pile (3) to the structure (2) which comprise a bolt (7) or a plug (30). The method comprises: introducing the first end (4) of the pile (3) in the ground, leaving the second end (5) above the ground (1); fixing the bolt (7) to the pile (3); and fixing the structure (2) to the bolt (7) or to the plug (30).

Abstract: The present invention relates to a heat exchanger configured to capture energy by radiation, comprising at least one flag-shaped basic exchanger (10), including: a) an input collector (5) and an output collector (6); b) a plurality of exchange tubes (1) connected to the input collector (5) and to the output collector (6), respectively, and stacked so as to halt the incident radiation, each tube (1) being provided in the form of a hairpin with one curved part at the head of the pin (4) and two arms (2, 3) adjoining essentially vertically and on the largest part of the length thereof, the end of the tubes (1) at the pin head (4) being free and the tubes (1) being self-supported at the ends thereof connected to said collectors (5, 6).

Abstract: It allows lifting the heliostat in the warehouse and placing it on the cart, and once it reaches the installation spot in the field, the lifting structure is used to lift the heliostat from the cart and place it on a previously installed pedestal. The structure formed by an upper arch and two lower bases, being the upper arch, comprised at the same time by a central, elongated and horizontal profile, which presents two lateral profiles on its ends, from which vertical plates start at the bottom, provided with a hole in the proximity of its lower ends, through which the upper arch (2) is linked to the lower bases through some fixing mechanism, having the lower bases a semicircular support adapted to receive one of the support arms of the heliostat.

Abstract: Magnetic tape (1) device (4) for magnetic encoder and manufacturing and installation procedures for this device (4). The magnetic tape (1) has a magnetized surface and a non-magnetized surface in the device (4), which also comprises a clamp (2) with fastening means, such that when the device (4) is mounted on a rotating shaft (5) then the magnetic tape (1) is located between the outer surface of the shaft (5) and the inner surface (7) of the clamp (2) on which the magnetic tape (1) is adhered by its magnetized surface. A manufacturing procedure for this device (4) and an installation procedure for this device (4) on a rotating shaft (5) is also described.

Abstract: The invention relates to a solar tracker having oleo-hydraulic cylinders that increase the rigidity of the system by keeping the two chambers of each cylinder pressurized, even while on stand-by. This makes the system more accurate, avoiding undesirable cylinder movement caused by oil compression. The system includes a circuit having at least one cylinder assembly (8,9), an oleo-hydraulic plant and a control system (5), wherein the oleo-hydraulic plant supplies the oil to the cylinders controlling the speed of movement of these latter, and the control system (5) supervises and controls the correct operation of the entire system and protects said system against possible accidents.

Abstract: A solar plant enabling transformation of solar energy exploiting most of the solar spectrum with very efficient yields, including: at least one solar collector including a concentrator, configured to collect and concentrate solar radiation in the concentrator; a solar laser device to transform radiation received from the concentrators into laser radiation; a receiver and/or a solar reactor configured to receive radiation from the laser device and transform it into another form of energy; and can include flexible lightguides or plane mirrors to transport the radiation received from the laser device to the solar reactor and/or receiver, and photovoltaic cells interspersed among the collectors and laser devices to transform the concentrated radiation into electricity and allow radiation not transformed to pass to the laser devices.

Abstract: Mounting procedure of a high-concentration photovoltaic solar module and module thus obtained, defined to carry out a simple final mounting based on a set of elements arriving from the factory in optimum packaging to facilitate the logistics, three being the main mounting sequences: Sequence 1: optoelectronic system assembly Sequence 2: mounting of the optoelectronic system at the base of the module, interconnecting and tests Sequence 3: final assembly of the module, and wherein the module thus mounted comprises: a series of equal optoelectronic systems placed in a matrix configuration and each one of them formed by secondary optics (1), a photovoltaic receiver (2), a thermal adhesive (3), a heat sink (4) and a fastening piece of the secondary optics composed by a body and a washer, the structure of the module, and the upper lens (9).

Abstract: Dehumidifier for photovoltaic modules, of a series of photovoltaic concentration modules, formed by a common air inlet and outlet access that communicates all the modules, and which passes through a bed of moisture absorbing material, having an electrical self-adjusted resistance (15) installed therein. The circuit is completed with a solenoid valve (13), a flow switch (19), a non-return valve (12); a pressure switch (16) and a timer relay (20). The process is based on pressure differences existing within the photovoltaic modules throughout the day, and consists of two steps: drying air by passing through the bed of absorbent material before entering into the photovoltaic modules and the regeneration of the drying system, which can be automatically or manually by connecting a compressor or fan.

Abstract: A device for transformation of concentrated solar energy including a photovoltaic cell and laser device, which includes a first reflecting mirror adapted for entry of a beam of solar rays and a second reflecting mirror adapted for an outlet of a laser beam, with the first reflecting mirror reflective on an outlet wavelength of the laser beam and transparent to a totality of a solar spectrum and the second reflecting mirror partially reflective on the wavelength of the laser beam, reflective in an interval of the solar spectrum which is absorbed and transparent in other wavelengths different to these, and at the outlet of the laser beam. The device includes a nucleus doped with substances for total or partial absorption of the solar spectrum and coatings.

Abstract: The invention relates to a virtual controller of electromechanical characteristics for a static power converter that includes a PLC (23) (power loop controller), which receives, at the input thereof, the power difference (?P) between the input power (Pin) (power delivered to the converter by the primary source) and the power delivered to the grid (Pelec) and is able to modify online the parameters of the virtual inertia coefficient and the damping factor as a function of the desired response and of the grid conditions for different frequency ranges.

Abstract: The invention relates to a virtual admittance controller based on static power converters, comprising a control loop into the inlet of which is injected the difference in voltage between a virtual internal voltage (e) and the voltage at the network connection point (v). Said difference in voltages feeds a virtual admittance processor (13) that determines the value of a reference current (i*) that it communicates to a current source (14), said current source physically injecting said current into the network (15).

Abstract: The invention relates to a hydraulic oil-driven structural support rotating mechanism comprising at least two hydraulic cylinders for driving the rotational movement of the structural support with respect to at least one axis, selected from vertical, horizontal or a combination of both, and a hollow core, comprising at least one opening on its side surface for the passage of a first and a second pivotable hydraulic cylinder, fixed to the core by means of two parallel vertical shafts , the ends of each hydraulic oil cylinder being fixed by attachment means to a rotating mechanical element selected from a slew ring or bearing, located inside the hollow core to which it is fixed by rotating mechanical element-core attachment means, and attached to the structural support by structural support-rotating mechanical element attachment means.

Abstract: The invention relates to a method for in situ coating a tower solar receiver in order to protect the surface of the receiver from corrosion and to increase absorptivity of same, which is carried out in several steps: surface preparation, application of the coating, curing, optional vitrification, and controlled cooling. The surface preparation is done by zones depending on the size of the receiver, a methodology that enables an intercalated application of the coating in order to minimize the risk of corrosion. The curing stage is carried out by supplying steam to the inside of the receiver tubes, and temperature requirements above the operating limits of the boiler are adjusted with the solar field as support system. Vitrification is done using saturated steam traveling through the receiver tubes and concentrating solar radiation on the surface of the receiver from the solar field.

Abstract: Structural support azimuth rotation mechanism (2) comprising the following: a rotating structure (1) with respect to a fixed vertical rotation shaft (3), connected to the structural support (2) by connecting means, which includes: a flat base (10) in the center of which is located the fixed vertical rotation shaft (3), and a side wall (11) along the entire length of the perimeter of the flat circular base, at least one fixed azimuth rotation device (4) of the rotating structure (1), that includes rotation means (5, 6, 15, 16) that are supported by the side wall (11) of the rotating structure (1), and a fixed system of support on the ground, that includes the fixed vertical rotation shaft (3) and a plurality of feet (7, 7?, 7?), on which is fixed at least one fixed azimuth rotation device (4).

Abstract: Solar tracker comprising a pedestal (1) upon which a structural support (10) is fixed for a reflective surface (15), which comprises: a fixed base (2) anchored to the floor, which comprises a flat upper surface (7) with an opening, a vertical axis mechanical rotation element (3) arranged in the opening of the flat surface (7) of the fixed base (2) and fixed to the pedestal (1) and an azimuthal rotation actuator cylinder (4) of the structural support (10), comprising a first end fixed to the floor by an anchoring means (16, 2) and a second end fixed to the mechanical rotation element (3) by fixation means, the mechanical rotation means being configured in such a way that when the actuator cylinder carries out its movement, the mechanical rotation element transmits the rotational movement of the second end of the actuator cylinder to the pedestal (1).