Abstract: A process for maximum power point tracking of a photovoltaic module, which includes monitoring the module's degradation by: for a periodicity n1?t0 with n1>1 constant or variable, steps of measuring parameters I and V of the module for points offset in voltage voltage VMPP+? and VMPP?? over the curve I(V) relative to the maximum power point MPP, calculating the slope dI/dV+ at the point VMPP+? and the slope dI/dV? at the point and VMPP?? and recording of the data with the MPP; for a periodicity n2?t0 with n2?n1 of > of steps of measuring values I and V by sweeping the curve I(V) and calculating and storing the module's parameters and values; one or several steps of calculating, tracing and displaying of (p/2) curves of data pairs based on p measured and calculated parameters; and one or more steps of detecting degradation from the measured and calculated parameters.

Abstract: The invention relates to a method for electrically characterising the cells of a photovoltaic module. Said method comprises measuring (MES) the light intensity emitted by electro luminescence by each of the cells according to a voltage applied to the module. Said method further comprises determining (RI), based on the measurements of the light intensity emitted by electroluminescence by each of the cells in a first voltage range applied to the module, hierarchical relationships of analytical relationships between first characteristic electrical parameters of the cells. Said method further comprises determining (R2), based on the measurements of the light intensity emitted by electroluminescence by each of the cells in a second voltage range applied to the module, hierarchical relationships of analytical relationships between second characteristic electrical parameters of the cells.

Abstract: The present invention relates to a rotary machine (10), comprising a casing (32) delimiting an oil compartment (31), a shaft (33), a bearing (22, 23, 24), an oil sealing device (35) located between the rotary portion (360) and the upper portion (320) of the casing (32), characterised in that the oil sealing device (35) comprises at least one groove (52) for drawing in external air in the direction (S) of rotation of the shaft (33), the groove (52) being located in the rotary portion (360) and/or in the upper portion (320) of the housing (32), the rotary portion (360) not being in contact with the upper portion (320), the groove (52) for drawing in external air being configured to draw air from the upstream end (521) to the downstream end (522) towards the compartment (31) when the shaft (33) rotates in the direction (S).

Abstract: A system for generating electrical energy, for instance at an agricultural site. The system includes at least one mobile robot, referred to as “collecting robot” and a plurality of mobile robots, referred to as “producing robots”. Each collect robot includes at least one input port adapted for coupling with an output port of a producing robot and an output port for outputting electrical energy received from each producing robot coupled with the collecting robot. Each producing robot includes a photovoltaic generator, at least one input port adapted for coupling with an output port of another producing robot, and at least one output port for outputting electrical energy generated by the producing robot and received from each other producing robot coupled with the producing robot.

Abstract: A computer-assisted method for determining an optimal core-loading pattern for a nuclear reactor core. Positions of nuclear fuel assemblies are tested to assign optimal positions and to load the reactor. The reactor core includes cells positioned symmetrically to axes of symmetry and a standard assembly for insertion into each cell. Standard assemblies are distributed by the number of previous production cycles. Groups of cell positions symmetric to the axes of symmetry are identified, and symmetric positions are counted. Families of standard assemblies having similar burnups are formed, wherein the standard assemblies correspond to positions in a group. The loading pattern of standard assemblies in initial positions is tested by numerical simulation, then the positions are swapped while maintaining the previously formed families of assemblies. The swapped positions loading pattern is tested by numerical simulation. This is repeated until at least one candidate pattern for loading the reactor is obtained.

Abstract: The protective suit (100) for a person comprises:—a main portion; and—a fully removable band (36) having predetermined outlines extending from a neck (17) of the suit to the lower ends of the left and right legs (19) of the suit.

Abstract: A method for predicting an acceleration of the degradation in capacity of an electrochemical device. The method includes obtaining point measurement data from a function linking a voltage across the terminals of the electrochemical device to a state of charge of the electrochemical device, and a measurement of the capacity of the electrochemical device, calculating the derivative of the function and identifying a peak in the variation of the derivative, due to an inflection in the variation of the function and characterizing a quantity representative of an anode capacity of the electrochemical device, estimating a width of the peak and comparing a combination of the peak width and the quantity representative of the anode capacity, to the measurement of the capacity of the electrochemical device, and if the combination is less than the capacity of the electrochemical device, predicting an acceleration of the degradation in capacity of the electrochemical device.

Abstract: A method for determining an open circuit voltage of an electrochemical device, including: a. collecting measurement data of the device, the measurements i. including at least the current It and the voltage Ut at the terminals of the device, ii. being time-stamped, and iii. being acquired during an uninterrupted and operational functional period of the device; b. calculating, for a plurality of times t, iv. a corrected intensity by applying a correction function to the measured intensity It, and v. an instantaneous charge based on a time series of the corrected intensity so as to obtain, for each time t, a set of collected and calculated data; c. grouping the data sets into ranges of instantaneous charge values based on the charge value of each set; and d. separately for each group, calculating an open circuit voltage of the device.

Abstract: The invention relates in particular to a solid metallic component. This component (1) is particularly notable in that it comprises a core (5) and an external shell (3) which surrounds said core (5) in all directions, this core (5) and this shell (3) being made of different grades of steel, the steel of said core (5) having martensite and bainite critical cooling rates lower than those of the steel or steels of said shell (3).

Abstract: A method for maximizing the current produced by a bifacial photovoltaic solar module including a plurality of cells, each having at least two stacked and series-connected junctions, the module being capable of orientation and including a device for driving its orientation with respect to the sun. The method includes an algorithm including measuring the module's irradiance at the upper face (Ai) on its upper photoactive face, reflective irradiance (Ar) on its lower photoactive face in its initial orientation, and initial current I from the irradiances Ai and Ar, and calculating currents Ijg generated by the stacked junctions from the cells' physical characteristics and I, calculating an optimized theoretical orientation for which equalization and maximization of the theoretical currents Ijtmax is obtained, and positioning the module in the theoretical orientation when an imbalance between Ijtmax and Ijg is greater than a threshold value dIjmax. A module designed for this method.

Abstract: A system composed of a photovoltaic module, itself composed of a multilayer housed in a frame and of at least one anti-vibration device that is able to be fixed with respect to the multilayer and in which the photovoltaic module as a whole has a total mass, a modal mass, and a natural frequency of vibration; the at least one anti-vibration device has: a mass, a natural frequency equal to a natural frequency of vibration of said photovoltaic module considered on its own, to within 15%, and a level of damping of the anti-vibration device considered on its own, equal to at least twice the level of damping of said photovoltaic module considered on its own.

Abstract: A method for maintaining a tube heat exchanger includes: obtaining measurement signals resulting from the passage of a measurement probe in the tubes of the heat exchanger, determining a reference time series corresponding to an average, at each instant, of the measurement signals, synchronising each measurement signal with the reference time series by applying a dynamic time warping, DTW, to said measurement signal and the reference time series, and searching for a potential anomaly by measuring a potential local deviation of a measurement signal with respect to the other measurement signals.

Abstract: A method for estimating a quantity of a system includes the following steps: for each variable of a plurality of variables, obtaining a sequence of successive measurements, determining a sequence of successive values of a stability parameter, the parameter being a weighted sum of rates of variation of the variables, identifying a time interval in which the stability parameter is less than or equal to a predetermined threshold for a duration greater than or equal to a predetermined duration, estimating a sequence of successive estimates of a particular variable, a start time of the sequence being included in the time interval, comparing the sequence of estimates and the sequence of measurements, in order to determine an adjustment parameter, and estimating the physical quantity of the system using the adjustment parameter.

Abstract: The invention relates to a system comprising: a fuel cell able to operate in a first and a second operating mode, such that: in the first mode, the fuel cell consumes energy in order to produce hydrogen, and in the second mode, the fuel cell produces energy by consuming hydrogen; a first storage device for storing hydrogen produced by the fuel cell when the fuel cell is in the first mode, the first storage device being able to absorb hydrogen at a first pressure and to release hydrogen at a second pressure, greater than the first pressure; and, a second storage device able to store hydrogen coming from the first storage device, the second storage device being able to absorb hydrogen by forming, with the hydrogen, a second metal hydride when the hydrogen is at the second pressure.

Abstract: The present invention relates to a rotary machine (10), comprising a casing (32) delimiting an oil compartment (31), a shaft (33), a bearing (22, 23, 24), an oil sealing device (35) located between the rotary portion (360) and the upper portion (320) of the casing (32), characterised in that the oil sealing device (35) comprises at least one groove (52) for drawing in external air in the direction (S) of rotation of the shaft (33), the groove (52) being located in the rotary portion (360) and/or in the upper portion (320) of the housing (32), the rotary portion (360) not being in contact with the upper portion (320), the groove (52) for drawing in external air being configured to draw air from the upstream end (521) to the downstream end (522) towards the compartment (31) when the shaft (33) rotates in the direction (S).

Abstract: Disclosed is a production method for a zinc electrode with in situ formation of calcium zincate crystals. The method includes notably the steps of preparation of a mixture, growth of crystals, slowing of the growth and production of the electrode.

Abstract: Some examples present a photovoltaic installation able to float and to allow producing electricity including a first photovoltaic module, a second photovoltaic module, a reflector and a flotation device able to make the photovoltaic installation float, wherein: each photovoltaic module includes a photovoltaic panel and a bearing structure, distinct from the flotation device and suited for carrying the photovoltaic panel; the two photovoltaic modules are oriented along a single axis and are aligned along this axis while being separated by a determined distance, the distance being suited for allowing the passage of an individual between the modules; and the reflector includes two opposite ends respectively assembled to the bearing structure of the first photovoltaic module and of the bearing structure of the second photovoltaic module.

Abstract: A method for estimating at least one energy production indicator of a solar energy production system, comprising: reception of at least one image obtained from a wide-angle image capture device, processing of said obtained image by at least one convolutional neural network comprising at least two layers respectively for the application of a convolution filter to the obtained image and for the estimation of an energy production indicator.

Abstract: A device for holding a flap of a non-return valve in a closed position, which is configured to carry out hydraulic testing of a device or apparatus, includes a body which takes the form of a caliper with two arms that are articulated relative to each other, at a first of the two opposite ends thereof, about a first axis, in that it includes a holder articulated about the first axis and in that the two arms each has, at the second end thereof, a pad pivoting about axes that are parallel to the first axis.

Abstract: A lifetime optimization method for a two-sided photovoltaic module, which includes at least one multi-junction stack, where the stack's first junction layer is on the module's first side, which is exposed to the sun at the beginning of the module's life in the module's base position, and the stack's last junction layer is arranged under the module's second side, which receives diffused and reflected light and light passed through the stack. The method includes measuring the full module's output power (PFM); calculating an estimated output power for the last junction layer (PLL) as a function of the first irradiance in the module's turned over position, where the second side becomes its upper side; comparing the estimated PLL with the PFM when the first side is the upper side and recommending turning over the module when the base position's PFM becomes less than the turned over position's estimated PLL.