{"id":29385,"date":"2026-08-13T17:11:35","date_gmt":"2026-08-13T09:11:35","guid":{"rendered":"https:\/\/heargrow.com\/?p=29385"},"modified":"2026-08-13T17:14:07","modified_gmt":"2026-08-13T09:14:07","slug":"solar-power-supply-system-configuration-tutorial-90w","status":"publish","type":"post","link":"https:\/\/heargrow.com\/index.php\/2026\/08\/13\/solar-power-supply-system-configuration-tutorial-90w\/","title":{"rendered":"Solar Power Supply System Configuration Tutorial 90W"},"content":{"rendered":"\t\t
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HearGrow Electronics
Research and production of professional electronic\/power\/new energy intelligent control equipment Website: H ttp:\/\/www.ueiua.com
Reference for configuration method of solar energy system
90W solar power supply system configuration
1. Selection of battery capacity
Assuming the average power consumption of the electrical equipment is 90W, and the entire system uses a 12V DC storage system to reverse to an AC 220V power supply, the daily power consumption of the system is
90 watts\/12 volts x 24 hours=180 (ah)
If the capacity of the battery pack can meet the continuous operation of the entire system for 3 days in rainy weather, then the minimum capacity of the battery pack is:
180ah x 3 days=540 (ah)
Although the nominal capacity of the battery is its rated discharge capacity, the best choice for the solar bracket image energy system battery is the deep cycle maintenance free lead-acid battery. Generally, the system reliability is best when the discharge depth is between 50% and 80%. We designed the total capacity of Beijing Solar Energy Company based on a discharge depth of only 50% in order to have a certain amount of surplus
540ah\/0.5 = 1080 ah
In this way, the total capacity of the battery pack is calculated, and a capacity of 1200ah is required to meet the power supply requirements for the system to operate continuously for 24 hours and have 3 consecutive rainy days. The two battery packs from Beijing Solar Energy Company are DC12V, and the optimal combination of battery packs should be: 6 2V1200Ah batteries installed in series.
2. Selection of solar panels
The solar cell array is composed of one or more solar cell modules. If there is more than one bracket image, the solar bracket image and voltage of the component should be basically consistent, with the bracket image series and parallel combination loss.
Determine the total power of the solar cell array based on the solar radiation parameters of the system installation site and the characteristics of the load; Determine the number of components in series and parallel for the solar cell array based on the voltage and current requirements of the designed system.
Now, the output power of the solar panel is calculated based on the effective daily sunshine duration of 6 hours at the system installation site, taking into account the charging efficiency and losses during the charging and inverter processes.
The system's solar bracket operates continuously for 24 hours with an average power of 90W, resulting in a daily rated power consumption of
90w * 24 hours=2160Wh
Considering the losses of power devices with charging control and inverter control in the system, taking 0.9 as the inverter efficiency parameter value, which brand of solar energy is good? Therefore, the total amount of electricity required from the solar panel in the solar bracket image should be
2160wh\/0.9\uff1d1944wh
In the actual charging process of solar cells, they will be affected by weather conditions in the solar bracket picture. The actual power factor of solar cells is generally calculated at 0.7, and the total power required for solar panels is calculated based on the effective solar bracket picture time of 6 hours per day
1944wh\/6h\/0.7=462.86w
So the solar panel design is 500W, using 5 12v100W solar panels installed in parallel.
3. Design of solar panel bracket
The solar cell array bracket is used to support solar cell modules, and the structural design of the solar cell array should ensure the connection between the modules and the bracket
UEIUA Yueyuan Electronics
Research and production of professional electronic\/power\/new energy intelligent control equipment Website: H ttp:\/\/www.ueiua.com
The connection is firm and reliable, and the solar cell modules can be easily replaced. The solar cell array and bracket must be able to withstand wind speeds of up to 120km\/h without being damaged.
The bracket can be adjustable in tilt angle or installed at a fixed angle to enable the solar cell array to achieve maximum power generation during the design month (i.e. the month with the worst average daily radiation).
All fasteners of the array must have sufficient strength to reliably fix the solar cell modules on the array bracket. The solar cell array can be installed on the roof, but the array bracket must be connected to the main structure of the building and cannot be connected to the roof material.
For ground mounted solar cell arrays, the minimum distance between solar cell modules and the ground should be at least 0.3m. The bottom of the column must be firmly connected to the foundation in order to withstand the weight of the solar cell array and the design wind speed.
4. Selection of solar charging controller
The charge and discharge controller can be a standalone device or integrated with an inverter.
The charge and discharge controller should have the following protection functions:
a) Circuit protection capable of withstanding load short circuits;
b) Circuit protection that can withstand loads, solar cell modules, or reverse polarity of batteries.
c) Capable of withstanding circuit protection against internal short circuits in charge and discharge controllers, inverters, and other devices;
d) Capable of withstanding breakdown protection caused by lightning strikes in areas with multiple lightning strikes;
e) Protection against reverse discharge of batteries through solar cell modules.
For systems with solar cell array power (peak) greater than 20W, the controller itself should have the functions of battery full charge disconnection (HVD) and undervoltage disconnection (LVD).
In the solar wireless dispatch system, the selected solar panel has a peak power of 500W and a charging voltage of 12V. Based on this data, the maximum operating current of the solar charging controller can be calculated as 500W\/12V<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

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