12 results about "Solar time" patented technology

The invention relates to the technical field of solar simulation adjustment, and discloses an intelligent controllable method and system for simulating dynamic change of solar radiation. Long-term irradiation data are obtained from a database and a local weather station and fused, the discontinuity of the daily boundary is overcome by applying a circumferential mapping and clustering method, and the maximum daily radiation intensity, the typical sunrise moment and the sunset moment of each month are obtained; on the basis, constructing an attenuation model taking a monthly typical value as a benchmark, introducing random disturbance and physical constraints conforming to meteorological statistical characteristics, generating intra-month daily simulation parameters, further utilizing a trigonometric function improvement model to dynamically represent the daily simulation parameters of the current month as target irradiation intensities at all moments, standardizing the target irradiation intensities and mapping the target irradiation intensities into command control quantities, and calculating the target irradiation intensities. Precise reproduction of the natural solar radiation curve by the illumination intensity is realized; then actual light intensity is detected through an irradiation sensor, execution errors are calculated, control action quantity is generated in real time through a PID control law, and finally execution quality is evaluated through a control action quantity sequence.

An electronic watch can be configured to have a function for space exploration and / or terrestrial planet surface exploration. The watch can include a time display device and a processor subsystem. The processor subsystem can be configured to maintain a coordinated planet time of a terrestrial planet, obtain longitude data representing a longitude of interest on the terrestrial planet, the longitude of interest being different from the prime meridian of the planet, determine a local true solar time, LTST, at the longitude of interest as a function of the coordinated planet time, and control the time display device of the electronic watch to display the LTST using a time equation that takes into account an orbital eccentricity and an axial tilt of the terrestrial planet.

The utility model discloses a novel sundial which comprises a sundial disc and a sundial needle, the sundial needle vertically penetrates through the sundial disc, the sundial disc comprises a central disc, a longitude circle and a standard time circle which are sequentially arranged from inside to outside, the central disc is a fixed disc, the disc surface of the central disc is provided with original scales, and the original scales are consistent with scale patterns of a traditional sundial; the longitude circle is rotationally or fixedly arranged relative to the center disc, a plurality of longitude scale values are evenly arranged on the inner side, close to the center disc, of the longitude circle along the circumference, and a plurality of first date scales are unequally arranged on the outer side, close to the standard time circle, of the longitude circle along the circumference. According to the design of the sundial, the traditional true solar hour and the modern standard time are combined, so that the sundial not only can accurately display the true solar hour, but also can synchronously display the standard time, the practicability of the sundial is greatly enhanced, the requirement of modern people on the standard time is met, and the sundial is worthy of popularization and application. And meanwhile, the value of the traditional sundial as a cultural heritage is reserved.

The application discloses a new energy station wind and light time sequence power generation method and system based on an improved domain adversarial network. The historical real power data of the produced and operated station is used as a reference, and the meteorological data of the source domain and the target domain station is trained through the improved domain adversarial network to realize unsupervised domain self-adaptation. In the training process, the accuracy of the wind and light time sequence power generation is improved by continuously optimizing feature extraction. The application can adapt to meteorological power data sets of different geographical positions and generate power curves more in line with the actual wind and light output distribution law. The experimental results show that the application has high reliability and practicality in generating wind and light time sequence power and has the characteristics of strong flexibility and can adapt to the wind and light power generation task of the target domain with a small amount or lack of labels. Therefore, the new energy station wind and light time sequence power generation method based on the improved domain adversarial network has a wide application prospect in improving the wind and light energy prediction accuracy and practical application.

The invention relates to the field of photovoltaic arrays, in particular to a building roof photovoltaic array optimal dip angle collaborative optimization method, device and equipment and a medium. According to the solar irradiation data, the assembly electrical parameters and the preset inclination angle, the full-life-cycle generating capacity of the single photovoltaic assembly under the preset inclination angle is obtained; obtaining the maximum installed capacity and the total number of the modules under the preset inclination angle according to the preset inclination angle, the geometric size of the single photovoltaic module, the site size and the true sun shadow constraint; according to the full-life-cycle generating capacity, the total number of the modules, the maximum installed capacity and the cost parameter of the single photovoltaic module, the leveling cost per kilowatt-hour under the preset dip angle is calculated; and according to the leveling cost per kilowatt-hour corresponding to each preset inclination angle in the preset inclination angle range, determining the preset inclination angle with the lowest leveling cost per kilowatt-hour as the optimal inclination angle. And a brand new synergy path is provided for photovoltaic investment in a high-rent scene.

The application discloses a method for calibrating a roll angle of an emergency anti-solar time of a satellite on the earth, which is beneficial to reestablishing a three-axis attitude of the satellite on the earth. Firstly, an angle between a projection of a sun vector on an orbit plane and an orbit system-X axis is calculated; then, whether a current orbit position meets a requirement is determined according to the angle between the projection of the sun vector on the orbit plane and the orbit system-X axis, and whether an absolute attitude reference is available at present is determined, if the current orbit position meets the requirement and the absolute attitude reference is available at present, the roll angle is calibrated at a current control beat; otherwise, the roll angle is not calibrated at the current control beat; if the roll angle is calibrated at the current control beat, the roll angle is calculated based on the absolute attitude reference; if the roll angle is not calibrated at the current control beat, the roll angle is calculated by using gyro inertia angular velocity integration. The application can provide high-precision and reliable attitude information for reestablishing the attitude of the satellite on the earth.

This invention belongs to the field of photovoltaic actuator technology and discloses a control method to prevent the photovoltaic actuator from locking up and being unable to retract during braking. The method includes: S1, the central control unit of the photovoltaic support is activated, and the electric actuator operates by calculating solar time to ensure normal tracking and maximize solar energy utilization; S2, the central control unit accurately acquires the real-time operating angle of the photovoltaic support using a dual data fusion mechanism. The central control unit also includes a tilt sensor and a pulse width modulation module, and a Hall sensor is installed in the motor that drives the electric actuator to extend and retract; S3, a buffer warning zone is set in the central control unit to prevent the photovoltaic support from entering a hard limit braking angle. This invention has a simple overall structure and can actively avoid hard limit braking impact and guide the actuator to retract smoothly by optimizing the braking timing, thus improving the performance.

To enable observation of celestial objects while moving relative to them. [Solution] The observation satellite 200 moves eastward relative to the space object between 10:00 and 18:00 solar time in the target area, changing the direction of its observation device from the anti-Earth direction to the east within a range of 30 to 90 degrees to allow the observation device to observe the space object, and then allows the observation device to observe the space object above the far side of the Earth between 18:00 and 6:00 solar time.

A method includes determining, by a controller, an output level of a photovoltaic system. The method includes determining, by the controller, a load on the photovoltaic system. The method includes, in response to determining the output level is greater than the load, directing, by the controller, an excess output from the photovoltaic system to a battery of the photovoltaic system to charge the battery. The method includes, in response to determining the output level is less than the load, determining a charge level of the battery and weather associated with the photovoltaic system. When the charge level of the battery is greater than a charge threshold and the weather indicates further usage of the photovoltaic system, the method includes powering the load from the battery in addition to the photovoltaic system.

The invention discloses a controller of a vertical shaft rotating sun tracking frame. The controller comprises a main control chip, a satellite navigation module, an electronic compass module, a magnetic declination calibration module, a communication module, a motor control module, a motor and a power management module. The main control chip calculates true sun time according to sun tracking frame position information and clock information received from the satellite navigation module; the true sun start-stop time and the start-stop azimuth angle of the sun-tracking frame are determined according to the true sun start-stop time and the start-stop azimuth angle of the sun from east to west, the rotation angular velocity of the sun-tracking frame is determined according to the rotation angular velocity of the sun, and the motor controls and manages the motor to rotate the sun-tracking frame according to the angular velocity; calibrating the sun tracking frame azimuth angle output by the electronic compass module and the magnetic declination obtained by the communication module from the server; and the main control chip takes the sun-tracking rack azimuth angle of 12: 00 in true sun time as the positive south, the time from the last half of sun tracking to the extremely west is completed by taking the sun-tracking rack azimuth angle as the starting point, then the sun-tracking rack is continuously reversed to the positive south for azimuth angle stroke calibration, and then the sun-tracking rack is continuously reversed according to the stroke time to the extremely east.

This utility model discloses an automated solar thermal collector and storage heating device for crude oil gathering and transportation in oilfields. The outlet pipe of the solar collector is connected to the inlet of the storage tank via a first temperature transmitter, one interface of a second electric three-way valve, and a sixth shut-off valve. The outlet pipe is also connected to the inlet of the high-level oil collection tank via a second temperature transmitter, a third check valve, a seventh shut-off valve, one interface of a third electric three-way valve, and a first shut-off valve. The other interface of the second electric three-way valve is connected to the pipeline between the seventh shut-off valve and the third electric three-way valve via an air source heat pump, one interface of a fourth electric three-way valve, and a second check valve. The other interface of the fourth electric three-way valve is connected to the pipeline between the second electric three-way valve and the sixth shut-off valve. This utility model has a reasonable structure, utilizes green sunlight, has long sunshine hours, no obstructions, concentrates heat for daytime storage, and releases heat at night. It features low collector loss rate, high heat exchange efficiency, and energy savings.

A method includes determining, by a controller, an output level of a photovoltaic system. The method includes determining, by the controller, a load on the photovoltaic system. The method includes, in response to determining the output level is greater than the load, directing, by the controller, an excess output from the photovoltaic system to a battery of the photovoltaic system to charge the battery. The method includes, in response to determining the output level is less than the load, determining a charge level of the battery and weather associated with the photovoltaic system. When the charge level of the battery is greater than a charge threshold and the weather indicates further usage of the photovoltaic system, the method includes powering the load from the battery in addition to the photovoltaic system.