Device for determining the length of daylight by at least one day, system for evaluating the latitude for installing a photovoltaic generator, and dynamic equipment controlled according to latitude

Abstract

The invention relates to a system for evaluating the latitude (φ) of the installation of a photovoltaic generator, this system comprising: - means for determining the length (D) of the day for a plurality of days, this from the length (D) of the day provided by a device for determining the length (D) of the day for at least one day for this plurality of days from measurements of the value of at least one electrical quantity consisting of at least one electrical voltage and / or at least one electrical current at the photovoltaic generator, - means for determining the variation (δ) of the length (D) of the day during this plurality of days and; - means for evaluating the latitude (φ) from the variation (δ) determined of the length (D) of the day during the plurality of days.

Description

Title of the invention: Device for determining the length of a day of at least one day, system for evaluating the latitude of installation of a photovoltaic generator, and dynamic equipment controlled according to latitude

[0001] The invention relates to a device for determining the length of the day of at least one day, a system for evaluating the latitude of installation of a photovoltaic generator and a dynamic equipment controlled according to this latitude.

[0002] The present invention relates to the field of manufacturing dynamic equipment that is configured to control a dynamic system comprising such dynamic equipment, based on daylight.

[0003] Without being limited in any way, the present invention will find a particularly suitable application when it comes to controlling a dynamic system, which is made up of a roller shutter curtain, which comprises a dynamic equipment which is made up of such a roller shutter.

[0004] Dynamic equipment is already known which includes a photovoltaic generator from which the values ​​of an electrical characteristic (in particular the open-circuit voltage or the short-circuit current) are recorded, which is characteristic of the illumination, more particularly of the irradiance, provided by the sun.

[0005] From the values ​​taken of this electrical characteristic, the dynamic system is controlled which then allows this dynamic system (and, therefore, the dynamic equipment) to be controlled according to the illumination of the sun.

[0006] Such control allows for the satisfactory operation of a dynamic system, primarily in terms of comfort, and to a lesser extent, in terms of energy savings. However, it should be noted that, with such control, the twilight activation of the dynamic system (more specifically, the twilight closing of the roller shutter curtain) usually occurs well after sunset, or even at nightfall. Furthermore, such control is sensitive to atmospheric conditions (particularly the presence or passage of clouds) as well as to the location (particularly its orientation, latitude, and surrounding environment) of the photovoltaic generator. Therefore, such control lacks precision and thus does not allow for the optimization of the performance, especially the energy performance, of the dynamic equipment.

[0007] Dynamic equipment is also known which controls the actuation of a dynamic system based on data, which is integrated into a database of The data contained in the dynamic equipment relates, on the one hand, to calendar dates and, on the other hand, to the sunrise and sunset times corresponding to those calendar dates. This dynamic equipment requires, firstly, a significant amount of memory to store this data (especially when it corresponds to different longitudes), secondly, a clock which has the disadvantage of drifting over time (not to mention a possible change between winter and summer time), and, thirdly, imposes industrial programming constraints.

[0008] Finally, it will be observed that known dynamic equipment ensures control of its dynamic system without taking into account the latitude of implantation of this dynamic equipment which, however, significantly influences the illumination provided by the sun and, consequently, the control of the dynamic equipment.

[0009] The present invention aims to remedy the drawbacks of controlling, based on lighting, the dynamic equipment of the prior art.

[0010] For this purpose, the invention relates to a device for determining the length of the day of at least one day.This device comprises, on the one hand, a photovoltaic generator, on the other hand, means for measuring the value of at least one electrical quantity consisting of at least one electrical voltage and / or at least one electrical current, at the photovoltaic generator, on the other hand, means for detecting an evolution of the measured values ​​of said at least one electrical quantity as a function of time, on the other hand, means for determining the time of dawn of said at least one day as being the time at which the measured values ​​evolve in a determined direction as well as means for determining the time of dusk of said at least one day as being the time at which the measured values ​​evolve in another direction and, on the other hand, also, means for determining the length of the day of said at least one day, this from the determined time of dawn and the determined time of dusk.

[0011] This invention also relates to a system for evaluating the latitude of installation of a photovoltaic generator. This evaluation system comprises, on the one hand, a device for determining the length of the day for at least one day, which has the characteristics described above; on the other hand, means for determining the length of the day for a plurality of days, based on the length of the day provided by the device for determining the length of the day for at least one day for this plurality of days; furthermore, means for determining the variation in the length of the day during this plurality of days; and, also, means for evaluating the latitude of installation of the photovoltaic generator, this from the determined variation of the length of the day over the plurality of days.

[0012] The invention also relates to dynamic equipment comprising, on the one hand, a dynamic system, on the other hand, a photovoltaic generator, and, on the other hand, a control device for this dynamic equipment. This dynamic equipment is characterized in that, on the one hand, it comprises a system for evaluating the latitude of installation of the photovoltaic generator which has the characteristics described above and, on the other hand, the control device comprises means for controlling the dynamic equipment as a function of at least one temperature, at least one period in the year and the latitude of installation of the photovoltaic generator determined by the system for evaluating the latitude of installation of the photovoltaic generator.

[0013] In addition, the invention relates to a method for determining the length of a day of at least one day. This method comprises:

[0014] - a step of measuring the value of at least one electrical quantity consisting of at least one electrical voltage and / or by at least one electrical current, this from a photovoltaic generator;

[0015] - a step of detecting a change in the measured values ​​of said at least one electrical quantity as a function of time;

[0016] - on the one hand, a step of determining the moment of dawn of said at least a day as being the moment at which the measured values ​​evolve in a determined direction and, on the other hand, a step of determining the moment of twilight of said at least one day as being the moment at which the measured values ​​evolve in another direction;

[0017] - a step of determining the duration of the day of said at least one day, this from the determined moment of dawn and the determined moment of dusk.

[0018] This invention also relates to a method for evaluating the latitude for installing a photovoltaic generator. This evaluation method comprises, firstly, a step of determining the length of the day for a plurality of days, this determination step being carried out by implementing, for each day of this plurality of days, the method for determining the length of the day for at least one day described above, secondly, a step of determining the variation in the length of the day during this plurality of days and, furthermore, a step of evaluating the latitude for installing the photovoltaic generator, this based on the determined variation in the length of the day during the plurality of days.

[0019] Finally, the invention relates to a method for controlling dynamic equipment which comprises, on the one hand, a dynamic system, on the other hand, a photovoltaic generator, and, on the other hand also, a control device for this dynamic equipment. This control method is characterized by the fact that, on the one hand, the control method consists of controlling the dynamic equipment according to at least one temperature, at least one period in the year and the latitude of the installation of the dynamic equipment and that, on the other hand, the latitude of the installation of the dynamic equipment is evaluated by the implementation of the method for evaluating the latitude of the installation of the photovoltaic generator which has the characteristics described above.

[0020] Thus, the invention relates to a device and a method for determining the length of the day for at least one day. This device and method are based on measuring the value of at least one electrical characteristic of a photovoltaic generator, which advantageously allows the length of the day for at least one day to be determined with particular precision, without requiring a clock or time stamp, without needing to use a large memory to store data relating to the lengths of days, and taking into account the location of the photovoltaic generator, in particular its longitude and latitude.

[0021] The invention also relates to a system, or method, for evaluating the latitude of installation of a photovoltaic generator. This device, or method, is linked to the device, or method, for determining the length of the day for at least one day and thus also allows for a particularly precise evaluation of the latitude of installation of the photovoltaic generator, without requiring a large memory to store data relating to latitudes, and taking into account the installation of the photovoltaic generator.

[0022] Finally, the invention relates to dynamic equipment comprising such a system for evaluating the latitude of installation of a photovoltaic generator, as well as a control device for this dynamic equipment comprising means for controlling the dynamic equipment as a function of at least one temperature, at least one period of the year, and the latitude of installation of the photovoltaic generator as determined by the system for evaluating the latitude of installation of a photovoltaic generator. The invention also relates to a method for controlling such dynamic equipment, which consists of controlling the dynamic equipment as a function of at least one temperature, at least one period of the year, and the latitude of installation of the dynamic equipment, this latitude being evaluated by implementing said method for evaluating the latitude of installation of a photovoltaic generator.These characteristics advantageously allow for the control of dynamic equipment in a particularly precise manner and according to the latitude of installation of the photovoltaic generator, the temperature and . of at least one period in the year (for example, a period corresponding to at least one day or a plurality of days), more specifically corresponding to a temperature and / or a period of possible heatwave. These characteristics then allow, in all cases, regardless of the geographical location of the photovoltaic generator (in particular regardless of longitude and latitude) and regardless of the environment (notably meteorological, furniture or building) of this photovoltaic generator, to control the dynamic equipment (more specifically the dynamic system comprising this dynamic equipment) in a particularly precise and fine manner, this in particular with a view to optimizing the energy performance of such dynamic equipment and the building to which such dynamic equipment is associated.These characteristics allow, in particular, for the precise control of such dynamic equipment and, more specifically, for the precise energy management of such dynamic equipment, especially when taking into account a heatwave episode.

[0023] Other objects and advantages of the present invention will become apparent during the following description relating to embodiments which are given only by way of indicative and non-limiting examples.

[0024] Understanding this description will be facilitated by referring to the drawings attached in the appendix, in which:

[0025] [Fig-1] is a schematic view of a circuit voltage evolution curve open (or no-load voltage) Voc of a photovoltaic generator as a function of time, for different orientations of this photovoltaic generator.

[0026] [Fig.2] is a schematic view of a curve of the evolution of the open circuit voltage Voc of a photovoltaic generator as a function of the short circuit current Isc of this photovoltaic generator, for different orientations of this photovoltaic generator.

[0027] [Fig.3] is a schematic view of a curve of the variation of the length of the day as a function of the calendar day of the year, for a plurality of different latitudes.

[0028] [Fig.4] is a schematic and detailed view of part of the curve, illustrated [Fig.3], of the variation of the length of the day as a function of the calendar day of the year, for a plurality of different latitudes.

[0029] The present invention relates to the field of manufacturing dynamic equipment that is configured to control a dynamic system comprising such dynamic equipment including a photovoltaic generator, this according to daylight.

[0030] The invention relates, then, more particularly, to a device for determining the duration D of the day of at least one day.

[0031] This device comprises, on the one hand, a photovoltaic generator which, more particularly, adopts the form of a photovoltaic panel.

[0032] On the other hand, this device includes means for measuring the value of at least one electrical quantity consisting of at least one electrical voltage and / or at least one electrical current, this at the photovoltaic generator.

[0033] Furthermore, this device includes means for detecting an evolution of the measured values ​​of said at least one electrical quantity, this as a function of time.

[0034] Furthermore, this device also includes means for determining the dawn time Ta of said at least one day as the instant at which the measured values ​​change in a specific direction. This device further includes means for determining the dusk time Te of said at least one day as the instant at which the measured values ​​change in another direction.

[0035] On the other hand, this device also includes means for determining the duration D of the day of said at least one day, this from the determined time of dawn Ta and the determined time of twilight Te.

[0036] As mentioned above, the device includes means for measuring the value of at least one electrical quantity consisting of at least one electrical voltage and / or at least one electrical current.

[0037] According to a first embodiment, these means for measuring the value of at least one electrical quantity consisting of at least one electrical voltage comprise means for measuring, at the photovoltaic generator, a value of an electrical voltage representative of and / or close to an open-circuit voltage Voc, in other words, an open-circuit voltage. Such measurement means may include a voltage divider and an analog-to-digital converter of a microcontroller.

[0038] Alternatively, and according to a second embodiment, these means for measuring the value of at least one electrical quantity consisting of at least one electric current comprise means for measuring, at the photovoltaic generator, a value of an electric current representative of and / or close to a short-circuit current Isc. Such measurement means may comprise a short-circuit current measurement shunt or a current sensor connected to an input of a microcontroller.

[0039] However, according to a third embodiment, these means for measuring the value of at least one electrical quantity comprise, on the one hand, means for measuring a value of an electrical voltage representative and / or close to an open-circuit electrical voltage Voc (in other words, an open-circuit voltage) at the photovoltaic generator and, on the other hand, means for measuring a value of a electric current representative and / or close to an electric short-circuit current Isc near the photovoltaic generator.

[0040] As mentioned above, the device includes means for detecting changes in the measured values ​​of said at least one electrical quantity, as a function of time, in particular as a function of a countdown time or the time of day of said at least one day.

[0041] In this regard, it will be noted that these detection means can be configured to detect an evolution of the measured values ​​of the electrical voltage (more particularly to detect an evolution of the measured values ​​of an electrical voltage representative and / or close to an open circuit voltage Voc), this as a function of time, in particular as a function of a countdown time or the time of day of said at least one day as illustrated [Fig.1].

[0042] Alternatively, these detection means can be configured to detect a change in the measured values ​​of the electric current (more particularly to detect a change in the measured values ​​of an electric current representative and / or close to a short-circuit current Isc), this as a function of time, in particular as a function of a countdown time or the time of day of said at least one day.

[0043] Alternatively, these detection means can be configured to detect a change, as a function of time (in particular as a function of a countdown time or the time of day of said at least one day), of the values ​​which correspond to the product, on the one hand, of the measured values ​​of the electrical voltage (more particularly of the electrical voltage representative and / or close to the open circuit voltage Voc) as a function of time (in particular as a function of a countdown time or the time of day) and, on the other hand, of the measured values ​​of the electrical current (more particularly of the electrical current representative and / or close to the short circuit current Isc) as a function of time (in particular as a function of a countdown time or the time of day).

[0044] Alternatively, these detection means can also be configured to detect a change in the measured values ​​of the electric voltage (more particularly of the representative and / or close to the open circuit voltage Voc and / or as a function of time, more particularly of a countdown time or of the time of day) as a function of the measured values ​​of the electric current (more particularly of the representative and / or close to the short circuit current Isc and / or as a function of time, more particularly as a function of a countdown time or of the time of day) as illustrated [Fig.2].

[0045] According to a first embodiment, these means for detecting a change in the measured values ​​of said at least one electrical quantity, on the one hand, comprise means for calculating the derivative of a function of the measured values ​​of said at least one electrical quantity and, on the other hand, are configured to detect an evolution of the value of the derivative of the function of the measured values.

[0046] In this regard, it will be observed that the function of the measured values ​​of said at least one electrical quantity can be constituted by a function of the values ​​of the electrical voltage (more particularly of the electrical voltage representative and / or close to the open circuit voltage Voc) as a function of time (in particular as a function of a counted time or of the time of day as illustrated [Fig.1]).

[0047] Alternatively, the function of the measured values ​​of said at least one electrical quantity may be constituted by a function of the values ​​of the electric current (more particularly of the electric current representative and / or close to the electric short-circuit current Isc) as a function of time (in particular as a function of a countdown time or the time of day).

[0048] Alternatively, the function of the measured values ​​of said at least one electrical quantity may be constituted by a function, as a function of time (in particular as a function of a counted time or the time of day of said at least one day), of the product, on the one hand, of the values ​​of the electrical voltage (more particularly of the electrical voltage representative and / or close to the open circuit voltage Voc) as a function of time (in particular as a function of a counted time or the time of day) and, on the other hand, of the values ​​of the electrical current (more particularly of the electrical current representative and / or close to the short circuit current Isc) as a function of time (in particular as a function of a counted time or the time of day).

[0049] Alternatively, the function of the measured values ​​of said at least one electrical quantity may be constituted by a function of the values ​​of the electrical voltage (more particularly of the representative and / or close to the open circuit voltage Voc and / or as a function of time, in particular as a function of a countdown time or the time of day) as a function of the values ​​of the electrical current (more particularly of the representative and / or close to the short circuit current Isc and / or as a function of time, in particular as a function of a countdown time or the time of day) as illustrated [Fig.2].

[0050] As mentioned above, the device comprises, on the one hand, means for determining the dawn time Ta of said at least one day as being the time at which the measured values ​​evolve in a determined direction (more particularly increase) and, on the other hand, means for determining the twilight time Te of said at least one day as being the time at which the measured values ​​evolve in another direction (more particularly decrease).

[0051] In this regard, it will be observed that, on the one hand, the means for determining the time of dawn Ta of said at least one day may include means for determining the time of dawn TA of said at least one day as being the time at which the measured values ​​evolve in a determined direction (more particularly increase) and, on the other hand, the means for determining the time of twilight Te of said at least one day may include means for determining the time of twilight Te as being the time at which the measured values ​​evolve in another direction (more particularly decrease).In this regard, it will be observed that, according to a first embodiment, on the one hand, the means for determining the instant (in particular the hour) of dawn Ta are configured to determine the instant (in particular the hour) of dawn Ta as being the instant at which (in particular the hour at which) the means for detecting an evolution of the measured values ​​of said at least one electrical quantity detect a non-zero value of the derivative of the function of the measured values ​​of said at least one electrical quantity and, on the other hand, the means for determining the instant (in particular the hour) of dusk Te are configured to determine the instant (in particular the hour) of dusk Te as being the instant at which (in particular the hour at which) the means for detecting an evolution of the measured values ​​of said at least one electrical quantity detect a zero value of the derivative of the function of the measured values ​​of said at least one electrical quantity.

[0052] According to a second embodiment, the means for detecting an evolution of the measured values ​​of said at least one electrical quantity are configured to detect measured values ​​of said at least one electrical quantity which cross at least a determined threshold.

[0053] In this regard, it should be noted that said at least one determined threshold corresponds, more specifically, to measurement noise. In fact, this measurement noise can be variable and can, for example, depend on environmental conditions, particularly daytime and / or nighttime light (including artificial light, for example, streetlights) and / or temperature. Such a threshold can be trained.

[0054] As mentioned above, the device comprises, on the one hand, means for determining the instant (in particular the hour) of dawn Ta of said at least one day as being the instant at which (in particular the hour at which) the measured values ​​evolve in a determined direction and, on the other hand, means for determining the instant (in particular the hour) of dusk Te of said at least one day as being the instant at which (in particular the hour at which) the measured values ​​evolve in another direction.

[0055] In this regard, it will be observed that, on the one hand, the means for determining the instant (in particular the hour) of dawn Ta are configured to determine the instant (in particular the hour) of dawn Ta as being the instant at which (in particular the hour at which) the means for detecting an evolution of the measured values ​​of said at least one electrical quantity detect that these measured values ​​of said at least one electrical quantity pass above a first determined threshold, more particularly emerge from a first measurement noise, and, on the other hand,The means for determining the instant (in particular the time) of twilight Te are configured to determine the instant (in particular the time) of twilight Te as the instant (in particular the time) at which the means for detecting a change in the measured values ​​of said at least one electrical quantity detect that these measured values ​​of said at least one electrical quantity fall below a second determined threshold (which may be different from the first determined threshold), more particularly enter a second measurement noise (which may be different from the first measurement noise).

[0056] As mentioned above, the device for determining the duration D of the day of at least one day includes means for determining the duration D of the day of said at least one day, this from the determined time of dawn Ta and the determined time of twilight Te.

[0057] In this regard, it will be noted that, according to a first embodiment, the means for determining the duration D of the day for said at least one day may comprise, on the one hand, timekeeping means, on the other hand, control means configured to trigger the timekeeping means at the specified time of dawn Ta and to stop the timekeeping means at the specified time of dusk Te, and, furthermore, means for recording the time elapsed between the triggering and stopping of the timekeeping means, and, also, means for deducing the duration D of the day from the recorded elapsed time. This embodiment advantageously eliminates the need for a clock or time stamp.

[0058] However, and according to a second embodiment, the means for determining the duration D of the day of said at least one day may comprise, on the one hand, at least one clock which provides the time of the day of at least one day and which is configured to provide the determined time of dawn Ta as well as the determined time of dusk Te and, on the other hand, calculation means which are configured to calculate the duration D of the day of said at least one day, this from the determined time of dawn Ta and the determined time of dusk Te provided by the clock.

[0059] The invention also relates to a system for evaluating the latitude q> of the installation of a photovoltaic generator.

[0060] This evaluation system includes, on the one hand, a device for determining the duration D of the day of at least one day which has at least some of the characteristics described above.

[0061] On the other hand, this evaluation system includes means for determining the duration D of the day for a plurality of days, based on the duration D of the day provided by the device for determining the duration D of the day for at least one day for this plurality of days.

[0062] These means for determining the duration D of the day over a plurality of days can be configured to determine the duration D of the day over a plurality of sliding days.

[0063] Furthermore, this evaluation system includes means of determining the variation ô of the duration D of the day during this plurality of days.

[0064] On the other hand, this evaluation system also includes means of evaluating the latitude q> of installation of the photovoltaic generator, this from the determined variation ô of the duration D of the day during the plurality of days.

[0065] As mentioned above, the evaluation system includes means for determining the variation ô of the duration D of the day during this plurality of days.

[0066] In this regard, it will be observed that these means of determining the variation ô of the duration D of the day include calculation means which are configured to calculate the slope of the variation ô of the duration D of the day as a function of the rank J of the days of the plurality of days.

[0067] Also as mentioned above, the evaluation system includes means for evaluating the latitude q> of installation of the photovoltaic generator, this from the determined variation ô of the duration D of the day during the plurality of days.

[0068] In this regard, it will be observed that these means of evaluating the latitude q> of installation of the photovoltaic generator include means of comparison which are configured to compare, on the one hand, the calculated slope of the variation ô of the duration D of the day as a function of the rank J of the days of the plurality of days and, on the other hand, a plurality of reference slopes each corresponding to a determined latitude q>.

[0069] In this regard, it will be noted that these reference slopes can be recorded in a memory which is included in the system (more particularly the means) for evaluating the latitude q> of the installation of the photovoltaic generator.

[0070] According to a particular embodiment, the slope can be calculated for a duration D of day corresponding to 12 hours which corresponds to the equinox.

[0071] In this regard, it will be observed that the slope of the variation ô of the duration D of the day as a function of the rank J of the calendar days of a year is characteristic of the latitude q>, as illustrated in figures 3 and 4.

[0072] The invention also relates to a dynamic equipment which includes, on the one hand, a dynamic system.

[0073] Without being limited in any way, the dynamic equipment of the present invention may consist of a roller shutter while the dynamic system may, then, consist of a roller shutter curtain comprising this roller shutter.

[0074] On the other hand, this dynamic equipment includes a photovoltaic generator which can adopt the form of a photovoltaic panel.

[0075] Furthermore, this dynamic equipment may include a battery, which is powered by the photovoltaic generator, and which supplies the dynamic system with electrical energy.

[0076] On the other hand, the dynamic equipment also includes a control device for this dynamic equipment.

[0077] According to the invention, on the one hand, the dynamic equipment includes a system for evaluating the latitude q> of the implantation of the photovoltaic generator, such a system for evaluating the latitude q> has at least some of the characteristics described above.

[0078] Also according to the invention, on the other hand, the control device (which includes the dynamic equipment) includes means for controlling the dynamic equipment as a function of at least one temperature (more particularly of at least one ambient and / or external temperature to the dynamic equipment, for example which may correspond to a heat wave temperature), of at least one period in the year and of the latitude q> determined by the latitude q> evaluation system of the location of the photovoltaic generator.

[0079] In this regard, it will be noted that said at least one period of the year may correspond to at least one specific day (more particularly identified by the rank J of this day in the year) or to a plurality of specific days (more particularly identified by the ranks J of these days in the year), in particular during which a heat wave is possible.

[0080] In fact, the variation ô of the duration D of the day is linked to the rank J of the day in the year by the formula:

[0081] 360 5 = 23.4 x sin(-— x (284 + J)) 365

[0082]

[0083]

[0084]

[0085]

[0086]

[0087]

[0088]

[0089]

[0090]

[0091]

[0092]

[0093]

[0094]

[0095]

[0096]

[0097]

[0098] Furthermore, the angle H0 (which is, more specifically, the hour angle at sunrise) is related to the variation ô of the length D of the day and to the latitude q> by the formula: cos(H0) = — tan (5) x tan(çj) Furthermore, the duration D of the day is related to the angle HO by the formula: We can then express the angle H0 as a function of the latitude q> and the day's rank J by the expression: ,r / 360 \ H o = cos 1 —tan I 23.4 x sin(—— x (284 + / )) ] x tan (p L \ 365 / Taking into account that: We can then express the duration D of the day as a function of the day's rank J and the latitude q by the formula: 2 x cos 1 15 It follows that: DX 15 a / 360 \ —-— = cos 1 —tan 23.4 x sin(—— x (284 + / )) I x tan (p 2 L x û65 / And that: COS ---- X 2 360 x —— x (284 + J)) x tan (p 365 / The latitude q is then given as a function of the length D of the day and the rank J of the day by the expression: (p = tan 1 (DX 15 cos I —— . 360 Klll i £* Xx ollly 2 g M i 1 JJJJ We can then express the day's rank J as a function of the day's duration D and the latitude q using the formula:

[0099]

[0100] Thus, knowing, on the one hand, the duration D of the day determined by the device for determining the duration D of the day described above and, on the other hand, the latitude q> of implantation of a photovoltaic generator evaluated by the system for evaluating the latitude q> of implantation of a photovoltaic generator described above, it is possible to determine the rank J of the day of the year.

[0101] Knowledge of the duration D of the day, the latitude q> of the installation of a photovoltaic generator and the rank J of the day of the year then allows the means of control of the dynamic equipment (and, therefore, the control device) to control the dynamic equipment according to these parameters.

[0102] The invention also relates to a method for determining the duration D of the day of at least one day.

[0103] This process comprises:

[0104] - a step of measuring the value of at least one electrical quantity consisting of at least one electrical voltage and / or by at least one electrical current, this from a photovoltaic generator;

[0105] - a step of detecting a change in the measured values ​​of said at least one electrical quantity as a function of time;

[0106] - on the one hand, a step of determining the time of dawn Ta of said at least a day as being the instant at which the measured values ​​evolve in a determined direction and, on the other hand, a step of determining the instant of twilight Te of said at least one day as being the instant at which the measured values ​​evolve in another direction;

[0107] - a step of determining the duration D of the day of said at least one day, this from the determined moment of dawn Ta and the determined moment Te of dusk.

[0108] As mentioned above, the method for determining the duration D of the day of at least one day includes a step of measuring the value of at least one electrical quantity consisting of at least one electrical voltage and / or at least one electrical current, this at a photovoltaic generator.

[0109] Thus and according to a first embodiment, the step of measuring the value of at least one electrical quantity consisting of at least one electrical voltage includes a step of measuring, at the photovoltaic generator, a value of an electrical voltage representative and / or close to an open circuit electrical voltage Voc, in other words the no-load voltage.

[0110] Alternatively and according to a second embodiment, the step of measuring the value of at least one electrical quantity consisting of at least one electric current includes a step of measuring, at the photovoltaic generator, a value of an electric current representative and / or close to a short-circuit current Isc.

[0111] However, and according to a third embodiment, the step of measuring the value of at least one electrical quantity comprises, on the one hand, a step of measuring a value of an electrical voltage representative and / or close to an open circuit electrical voltage Voc (in other words, the no-load voltage) at the photovoltaic generator and, on the other hand, a step of measuring a value of an electrical current representative and / or close to a short circuit electrical current Isc at the photovoltaic generator.

[0112] As mentioned above, the method for determining the duration D of the day of at least one day includes a step of detecting an evolution of the measured values ​​of said at least one electrical quantity, this as a function of time, in particular as a function of a counted time or of the hour of the day of said at least one day.

[0113] In this regard, it will be observed that this step of detecting an evolution can consist of detecting an evolution of the measured values ​​of the electrical voltage (more particularly an evolution of the measured values ​​of an electrical voltage representative and / or close to an open circuit electrical voltage Voc), this as a function of time, in particular as a function of a counted time or the time of day of said at least one day as illustrated [Fig.1].

[0114] Alternatively, this step of detecting a change can consist of detecting a change in the measured values ​​of the electric current (more particularly a change in the measured values ​​of an electric current representative and / or close to an electric short-circuit current Isc), this as a function of time, in particular as a function of a time elapsed or the time of day of said at least one day.

[0115] Alternatively, this step of detecting a change may consist of detecting a change, as a function of time (in particular as a function of a countdown time or the time of day of said at least one day), of the values ​​that correspond to the product, on the one hand, of the measured values ​​of the electrical voltage (more particularly of the representative and / or close to the open circuit voltage Voc) as a function of time (in particular as a function of a countdown time or the time of day) and, on the other hand, of the measured values ​​of the electric current (more particularly of the representative and / or close to the short circuit current Isc) as a function of time (in particular as a function of a countdown time or the time of day).

[0116] Alternatively, this step of detecting a change can also consist of detecting a change in the measured values ​​of the electric voltage (more particularly of the representative and / or close to the open circuit electric voltage Voc and / or as a function of time, more particularly as a function of a countdown time or the time of day) as a function of the measured values ​​of the electric current (more particularly of the representative and / or close to the short circuit electric current Isc and / or as a function of time, more particularly as a function of a countdown time or the time of day) as illustrated [Fig.2].

[0117] According to a first embodiment, the step of detecting an evolution comprises, on the one hand, a step of calculating the derivative of a function of the measured values ​​of said at least one electrical quantity and, on the other hand, a step of detecting an evolution of the value of the derivative of the function of the measured values.

[0118] In this regard and as mentioned above, it will be observed that the function of the measured values ​​of said at least one electrical quantity can be constituted by a function of the values ​​of the electrical voltage (more particularly of the representative electrical voltage and / or close to the open circuit electrical voltage Voc) as a function of time (in particular as a function of a counted time or of the time of day as illustrated [Fig.1]).

[0119] Alternatively, and as mentioned above, the function of the measured values ​​of said at least one electrical quantity may be constituted by a function of the values ​​of the electric current (more particularly of the representative electric current and / or close to the short-circuit electric current Isc) as a function of time (in particular as a function of a counted time or the time of day).

[0120] Alternatively, and as mentioned above, the function of the measured values ​​of said at least one electrical quantity may be constituted by a function, as a function of time (in particular as a function of a counted time or the time of day of said at least one day), of the product, on the one hand, of the values ​​of the electrical voltage (more particularly of the representative and / or close electrical voltage Voc) as a function of time (in particular as a function of a counted time or the time of day) and, on the other hand, of the values ​​of the electrical current (more particularly of the electrical current representative and / or close to the short-circuit electric current Isc) as a function of time (in particular as a function of a countdown time or the time of day).

[0121] Also alternatively and as mentioned above, the function of the measured values ​​of said at least one electrical quantity may be constituted by a function of the values ​​of the electrical voltage (more particularly of the representative and / or close to the open circuit electrical voltage Voc and / or as a function of time, in particular as a function of a countdown time or the time of day) as a function of the values ​​of the electrical current (more particularly of the representative and / or close to the short circuit electrical current Isc and / or as a function of time, in particular as a function of a countdown time or the time of day) as illustrated [Fig.2].

[0122] As mentioned above, the method for determining the duration D of the day of at least one day comprises, on the one hand, a step of determining the time of dawn Ta of said at least one day as being the time at which the measured values ​​evolve in a determined direction (more particularly increase) and, on the other hand, a step of determining the time of twilight Te of said at least one day as being the time at which the measured values ​​evolve in another direction (more particularly decrease).

[0123] In this regard, it will be observed that, on the one hand, the step of determining the time of dawn Ta of said at least one day can be carried out by determining the time of dawn Ta of said at least one day as being the time at which the measured values ​​evolve in a determined direction (more particularly increase) and, on the other hand, the step of determining the time of twilight Te of said at least one day can be carried out by determining the time of twilight Te as being the time at which the measured values ​​evolve in another direction (more particularly decrease).

[0124] In this regard, it will be observed that, according to a first embodiment, on the one hand, the step of determining the instant (in particular the time) of dawn Ta is carried out by determining the instant (in particular the time) of dawn Ta as being the instant at which (in particular the time at which), during the step of detecting an evolution of the measured values ​​of said at least one electrical quantity, a non-zero value of the derivative of the function of the measured values ​​of said at least one electrical quantity was detected and, on the other hand, the step of determining the instant (in particular the time) of dusk Te is carried out by determining the instant (in particular the time) of dusk Te as being the instant at which (in particular the time at which), during the step of detecting an evolution of the measured values ​​of said at least one electrical quantity, a zero value of the derivative of the function of the measured values ​​of said at least one electrical quantity was detected.

[0125] However, and according to a second embodiment, the step of detecting a change includes a step of detecting a crossing of at least one threshold determined by the measured values ​​of said at least one electrical quantity.

[0126] Here again, it will be observed that said at least one determined threshold corresponds, more particularly, to the measurement noise, as described above

[0127] As mentioned above, the method for determining the duration D of the day of at least one day comprises, on the one hand, a step of determining the instant (in particular the hour) of dawn Ta of said at least one day as being the instant at which (in particular the hour) the measured values ​​evolve in a determined direction and, on the other hand, a step of determining the instant (in particular the hour) of twilight Te of said at least one day as being the instant at which (in particular the hour) the measured values ​​evolve in another direction.

[0128] In this regard, it will be observed that, on the one hand, the step of determining the instant (in particular the time) of dawn Ta is carried out by determining the instant (in particular the time) of dawn Ta as being the instant at which (in particular the time at which), during the step of detecting an evolution of the measured values ​​of said at least one electrical quantity, it was detected that these measured values ​​of said at least one electrical quantity pass above a first determined threshold (more particularly, emerge from a first measurement noise) and, on the other hand, the step of determining the instant (in particular the time) of dusk Te is carried out by determining the instant (in particular the time) of dusk as Te being the instant at which (in particular the time at which), during the step of detecting an evolution of the measured values ​​of said at least one electrical quantity,It has been detected that these measured values ​​of at least one electrical quantity fall below a second determined threshold (which may be different from the first determined threshold), more specifically, enter a second measurement noise (which may be different from the first measurement noise).

[0129] As mentioned above, the method for determining the duration D of the day of at least one day includes a step of determining the duration D of the day of said at least one day, this from the determined time of dawn Ta and the determined time of dusk Te.

[0130] In this regard, it will be noted that, according to a first embodiment, the step of determining the duration D of the day of said at least one day may comprise, on the one hand, a time counting step, on the other hand, a step of starting the time counting at the determined time of dawn Ta as well as a step of stopping the time counting at the determined time of dusk Te and, on the other hand, a A step is required to record the time elapsed between the start and stop of the timer, and a separate step is needed to deduce the duration D of the day from the recorded elapsed time. This embodiment advantageously eliminates the need for a clock or time stamp.

[0131] However, and according to a second embodiment, the step of determining the duration D of the day of said at least one day may include a step of calculating the duration D of the day of said at least one day, this from the determined time of dawn Ta and the determined time of dusk Te provided by a clock which provides the time of day of at least one day.

[0132] It will be noted that the method for determining the length D of a day of at least one day as described above can, more particularly (but not exclusively), be configured to be implemented by the device for determining the length D of a day of at least one day as described above. Conversely, the device for determining the length D of a day of at least one day as described above can, more particularly (but not exclusively), be configured to implement the method for determining the length D of a day of at least one day as described above.

[0133] The invention also relates to a method for evaluating the latitude q> of installation of a photovoltaic generator.

[0134] This evaluation method comprises, on the one hand, a step of determining the duration D of the day for a plurality of days. This determination step is carried out by implementing, for each day of this plurality of days, the method for determining the duration D of the day for at least one day which has the characteristics described above.

[0135] This step of determining the duration D of the day of a plurality of days can be configured to determine the duration D of the day over a plurality of sliding days.

[0136] This evaluation method includes, on the one hand, a step of determining the variation ô of the duration D of the day during this plurality of days and, on the other hand, a step of evaluating the latitude q> of installation of the photovoltaic generator, this from the variation ô determined of the duration D of the day during the plurality of days.

[0137] As mentioned above, the method for evaluating the latitude q> of implantation includes a step of determining the variation ô of the length D of the day during this plurality of days

[0138] In this regard, it will be observed that this step of determining the variation ô of the duration D of the day consists of calculating the slope of the variation ô of the duration D of the day as a function of the rank J of the days of the plurality of days.

[0139] Also as mentioned above, the method for evaluating the latitude q> of implantation of the photovoltaic generator includes a step of evaluating the latitude q> of implantation of the photovoltaic generator, this from the determined variation ô of the duration D of the day during the plurality of days.

[0140] In this regard, it will be noted that the step of evaluating the latitude q> of the installation of the photovoltaic generator consists of comparing, on the one hand, the calculated slope of the variation ô of the duration D of the day as a function of the rank J of the days of the plurality of days and, on the other hand, a plurality of reference slopes each corresponding to a determined latitude q>.

[0141] In this regard, it will be noted that these reference slopes can be recorded in a memory which is included in the system (more particularly the means) for evaluating the latitude q> of the installation of the photovoltaic generator.

[0142] According to a particular embodiment, the slope can be calculated for a duration D of day corresponding to 12 hours which corresponds to the equinox.

[0143] In this regard, it will be observed that the slope of the variation ô of the duration D of the day as a function of the rank J of the calendar days of a year is characteristic of the latitude q>, as illustrated in figures 3 and 4.

[0144] It will be noted that the method for evaluating the latitude q> of the installation of a photovoltaic generator as described above can, more particularly (but not exclusively), be configured to be implemented by the system for evaluating the latitude q> of the installation of a photovoltaic generator as described above. Conversely, the system for evaluating the latitude q> of the installation of a photovoltaic generator as described above can, more particularly (but not exclusively), be configured to implement the method for evaluating the latitude q> of the installation of a photovoltaic generator as described above.

[0145] The invention also relates to a method of controlling dynamic equipment.

[0146] As mentioned above, such dynamic equipment comprises, on the one hand, a dynamic system.

[0147] Here again, the dynamic equipment of the present invention can be constituted by a roller shutter while the dynamic system can, then, be constituted by a roller shutter curtain that comprises this roller shutter.

[0148] On the other hand, this dynamic equipment includes a photovoltaic generator which can take the form of a photovoltaic panel.

[0149] Furthermore, this dynamic equipment includes a battery, which is powered by the photovoltaic generator, and which supplies the dynamic system with electrical energy.

[0150] On the other hand, the dynamic equipment also includes a control device for this dynamic equipment.

[0151] The method of controlling such dynamic equipment consists of controlling this dynamic equipment as a function of at least one temperature (more particularly at least one ambient and / or external temperature to the dynamic equipment, for example which may correspond to a heat wave temperature), at least one period in the year and the latitude q> of implantation of the dynamic equipment.

[0152] In this regard, it will be observed that said at least one period of the year may correspond to at least one specific day (more particularly identified by the rank J of this day in the year) or to a plurality of specific days (more particularly identified by the ranks J of these days in the year), in particular for which a heat wave is possible.

[0153] In fact, in this control method, the latitude q> of implantation of the dynamic equipment is evaluated by the implementation of the method for evaluating the latitude q> of implantation of the photovoltaic generator which has the characteristics described above.

[0154] It will be noted that the method for controlling dynamic equipment as described above can, more specifically (but not exclusively), be configured to be implemented by the dynamic equipment and / or by the control device for that dynamic equipment as described above. Conversely, the dynamic equipment and / or the control device as described above can, more specifically (but not exclusively), be configured to implement the method for controlling dynamic equipment as described above.

Claims

Claims

1. System for evaluating the latitude (q>) of installation of a photovoltaic generator, this evaluation system comprises: - a device for determining the duration (D) of the day of at least one day, this device comprises: - on the one hand, a photovoltaic generator, - on the other hand, means for measuring the value of at least one electrical quantity constituted by at least one electrical voltage and / or by at least one electrical current, this near the photovoltaic generator, - on the other hand again, means for detecting a change in the measured values of said at least one electrical quantity as a function of time, - on the other hand also,means for determining the time of dawn (Ta) of said at least one day as being the time at which the measured values evolve in a determined direction as well as means for determining the time of dusk (Te) of said at least one day as being the time at which the measured values evolve in another direction and, - on the other hand also, means for determining the duration (D) of the day of said at least one day, this from the determined time of dawn (Ta) and the determined time of dusk (Te), - means for determining the duration (D) of the day of a plurality of days, this from the duration (D) of the day provided by the device for determining the duration (D) of the day of at least one day for this plurality of days, - means for determining the variation of the duration (D) of the day during this plurality of days and,- means for evaluating the latitude (q>) of installation of the photovoltaic generator, this from the determined variation of the duration (D) of the day during the plurality of days.,

2. System for evaluating the latitude (q>) of installation of a photovoltaic generator according to claim 1, characterized in that the means for determining the variation in the duration (D) of the day comprise calculation means which are configured to calculate the slope of the variation in the duration (D) of the day as a function of the rank (J) of the days of the plurality of days.

3. System for evaluating the latitude (q>) of installation of a photovoltaic generator according to claim 2, characterized in that the means for evaluating the latitude (q>) of installation of the photovoltaic generator comprise comparison means which are configured to compare, on the one hand, the calculated slope of the variation of the duration (D) of the day as a function of the rank (J) of the days of the plurality of days and, on the other hand, a plurality of reference slopes each corresponding to a determined latitude (q>).

4. System for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of the preceding claims, characterized in that the means for measuring the value of at least one electrical quantity constituted by at least one electrical voltage comprise means for measuring, near the photovoltaic generator, a value of an electrical voltage representative of and / or close to an open circuit voltage (Voc).

5. System for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of claims 1 to 3, characterized in that the means for measuring the value of at least one electrical quantity constituted by at least one electric current comprise means for measuring, near the photovoltaic generator, a value of an electric current representative of and / or close to a short-circuit current (Isc).

6. System for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of claims 1 to 3, characterized in that the means for detecting a change in the measured values of said at least one electrical quantity, on the one hand, comprise means for calculating the derivative of a function of the measured values of said at least one electrical quantity and, on the other hand, are configured to detect a change in the value of the derivative of the function of the measured values.

7. System for evaluating the latitude (q>) of installation of a photovoltaic generator according to claim 6, characterized in that, on the one hand, the means for determining the instant of dawn (Ta) are configured to determine the instant of dawn (Ta) as being the instant at which the means for detecting a change in the measured values of said at least one electrical quantity detect a non-zero value of the derivative of the function of the measured values of said at least one electrical quantity and, on the other hand, the means for determining the instant of twilight (Te) are configured to determine the instant of twilight (Te) as being the instant at which the means for detecting a change in the measured values of said at least one electrical quantity detect a zero value of the derivative of the function of the measured values of said at least one electrical quantity.

8. System for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of claims 1 to 3, characterized in that the means for detecting a change in the measured values of said at least one electrical quantity are configured to detect measured values of said at least one electrical quantity which cross at least one determined threshold.

9. System for evaluating the latitude (q>) of installation of a photovoltaic generator according to claim 8, characterized in that, on the one hand, the means for determining the time of dawn (Ta) are configured to determine the time of dawn (Ta) as being the time at which the means for detecting a change in the measured values of said at least one electrical quantity detect that these measured values of said at least one electrical quantity pass above a first determined threshold and, on the other hand, the means for determining the time of dusk (Te) are configured to determine the time of dusk (Te) as being the time at which the means for detecting a change in the measured values of said at least one electrical quantity detect that these measured values of said at least one electrical quantity pass below a second determined threshold.

10. System for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of the preceding claims, characterized in that the means for determining the duration (D) of the day of said at least one day comprises, on the one hand, time counting means, on the other hand, control means which are configured to trigger the time counting means at the determined instant of dawn (Ta) as well as to stop the time counting means at the determined instant of dusk (Te) and, on the other hand, means for recording the time elapsed between the triggering and the stopping of the means of counting time and, on the other hand, also means of deducing the duration (D) of the day from the elapsed time recorded.

11. Dynamic equipment which comprises, on the one hand, a dynamic system, on the other hand, a photovoltaic generator and, on the other hand, also a device for controlling this dynamic equipment, characterized in that, on the one hand, it comprises a system for evaluating the latitude (q>) of installation of the photovoltaic generator in accordance with any one of the preceding claims and, on the other hand, the control device comprises means for controlling the dynamic equipment as a function of at least one temperature, at least one period in the year and the latitude (q>) of installation of the photovoltaic generator determined by the system for evaluating the latitude (q>) of installation of the photovoltaic generator.

12. Method for evaluating the latitude (q>) of installation of a photovoltaic generator, this evaluation method comprises: - on the one hand, a step of determining the duration (D) of the day of a plurality of days, this determination step being carried out by implementing, for each day of this plurality of days, a method for determining the duration (D) of the day of at least one day which comprises: - a step of measuring the value of at least one electrical quantity constituted by at least one electrical voltage and / or by at least one electrical current, this near a photovoltaic generator; - a step of detecting a change in the measured values of said at least one electrical quantity as a function of time;- on the one hand, a step of determining the time of dawn (Ta) of said at least one day as being the time at which the measured values evolve in a determined direction and, on the other hand, a step of determining the time of dusk (Te) of said at least one day as being the time at which the measured values evolve in another direction; - a step of determining the duration (D) of the day of said at least one day, this from the determined time of dawn (Ta) and the determined time of dusk (Te), - on the other hand, a step of determining the variation of the duration (D) of the day during this plurality of days and,; - on the other hand, a step of evaluating the latitude (q>) of installation of the photovoltaic generator, this from the determined variation of the duration (D) of the day during the plurality of days.

13. Method for evaluating the latitude (q>) of installation of a photovoltaic generator according to claim 12, characterized in that the step of determining the variation in the duration (D) of the day consists of calculating the slope of the variation in the duration (D) of the day as a function of the rank (J) of the days of the plurality of days.

14. Method for evaluating the latitude (q>) of installation of a photovoltaic generator according to claim 13, characterized in that the step of evaluating the latitude (q>) of installation of the photovoltaic generator consists of comparing, on the one hand, the calculated slope of the variation of the duration (D) of the day as a function of the rank (J) of the days of the plurality of days and, on the other hand, a plurality of reference slopes each corresponding to a determined latitude (q>).

15. Method for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of claims 12 to 14, characterized in that the step of measuring the value of said at least one electrical quantity constituted by at least one electrical voltage comprises a step of measuring, near the photovoltaic generator, a value of an electrical voltage representative of and / or close to an open circuit electrical voltage (Voc).

16. Method for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of claims 12 to 14, characterized in that the step of measuring the value of said at least one electrical quantity constituted by at least one electric current comprises a step of measuring, near the photovoltaic generator, a value of an electric current representative of and / or close to a short-circuit current (Isc).

17. Method for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of claims 12 to 14, characterized in that the step of detecting an evolution comprises, on the one hand, a step of calculating the derivative of a function of the measured values of said at least one quantity electrical and, on the other hand, a step of detecting an evolution of the value of the derivative of the function of the measured values.

18. Method for evaluating the latitude (q>) of installation of a photovoltaic generator according to claim 17, characterized in that, on the one hand, the step of determining the time of dawn (Ta) is carried out by determining the time of dawn (Ta) as being the time at which, during the step of detecting a change in the measured values of said at least one electrical quantity, a non-zero value of the derivative of the function of the measured values of said at least one electrical quantity has been detected and, on the other hand, the step of determining the time of dusk (Te) is carried out by determining the time of dusk (Te) as being the time at which, during the step of detecting a change in the measured values of said at least one electrical quantity, a zero value of the derivative of the function of the measured values of said at least one electrical quantity has been detected.

19. Method for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of claims 12 to 14, characterized in that the step of detecting a change comprises a step of detecting a crossing of at least one threshold determined by the measured values of said at least one electrical quantity.

20. Method for evaluating the latitude (q>) of installation of a photovoltaic generator according to claim 19, characterized in that, on the one hand, the step of determining the time of dawn (Ta) is carried out by determining the time of dawn (Ta) as being the time at which, during the step of detecting a change in the measured values of said at least one electrical quantity, it has been detected that these measured values of said at least one electrical quantity pass above a first determined threshold and, on the other hand, the step of determining the time of dusk (Te) is carried out by determining the time of dusk (Te) as being the time at which, during the step of detecting a change in the measured values of said at least one electrical quantity, it has been detected that these measured values of said at least one electrical quantity pass below a second determined threshold.

21. Method for evaluating the latitude (q>) of installation of a photovoltaic generator according to any one of the claims 12 to 14, characterized in that the step of determining the duration (D) of the day of said at least one day comprises, on the one hand, a step of counting the time, on the other hand, a step of triggering the counting of the time at the determined instant of dawn (Ta) as well as a step of stopping the counting of the time at the determined instant of dusk (Te) and, on the other hand, a step for recording the time elapsed between the triggering and the stopping of the counting of the time and, on the other hand also, a step for deducing the duration (D) of the day from the recorded elapsed time.

22. Method for controlling dynamic equipment which comprises, on the one hand, a dynamic system, on the other hand, a photovoltaic generator, and, on the other hand, also a device for controlling this dynamic equipment, characterized in that, on the one hand, the control method consists of controlling the dynamic equipment as a function of at least one temperature, at least one period in the year and the latitude (q>) of installation of the dynamic equipment and that, on the other hand, the latitude (q>) of installation of the dynamic equipment is evaluated by implementing the method for evaluating the latitude (q>) of installation of the photovoltaic generator in accordance with any one of claims 12 to 21.