Off-grid power is the harnessing of electricity independent of utilities, such as the electrical grid, through a renewable resource. Solar, wind, and hydro are three main methods of off-grid power production. Benefits of off-grid power system 1.Energy independence. You don't need to tapping into the nearest grid and paying the power company each month. 2. Environmental. It nearly has not non-existent carbon footprint. 3. Suitable for plateaus, island, remote mountainous areas and filed operations where the environment is harsh. Benefits of off-grid solar energy system Solar is most practical in the three main types of off-grid energy. Because fewest special working conditions is needed. Most places in the world qualify with solar energy. Solar power easier to obtain than wind and hydro power. And the cost of the solar energy system is more cheapest too. The solar power plants can also fastest recover the investment cost. If you're contemplating off-grid power for your house, solar energy system is a good choice. Welcome to contact us for your off-grid solar energy system. CORIGY SOLAR more professional and flexible solar mounting solutions waiting for you here! CONTACT US! Above news from CORIGY SOLAR Sales & Marketing department Phone: +0086-592-6883200 E-mail: sales@corigy.com

When you are preparing to install a off-grid solar energy system on your house, the first question you may think is How many panel will I need? The quantity of solar panels that will be needed is depends on the your electricity consumption, the average daily sunlight on your place, and watt number of each panel. To calculate exactly how many panels your home needs, you need to decide the power of the system that you will use. Firstly, you need to do is calculate how much power you will need. You need to adding up the power needed to run of all appliance in your house.This is an essential step to make sure that you have enough battery storage and solar panels to run all appliances in your house. After you calculate the wattage of each appliances in your house, estimate the time that you will need to run it for each day. It’s always best to think of worst-case scenarios, for example if the light need to run 3 hours in summer, but 6 hours in winter, record it as 6 hours. And also  consider the maximum you may need in the future. Then you can use this formula “Power x Time = watt hours”to work out the watt hours required each day. While you’re calculating the number of panels you need, it’s important to size up the other components such as battery bank. Because it will affect the size of your solar array. The battery bank you need is depends on how long it will be needed to back up your system. This will depend on your local climate, your situation, and what other backups you have available, etc. How long you want to be able to run your house from battery power only is called battery backup. It usually needed during the night or at times with little sunshine. A standard backup time is between 3 to 5 days, but it can be more or less. The longer you want to be able to back up your system for, the larger battery bank you will need. To decide the number of the panels you need, you must decide the wattage of the individual panels first. Panels have various power ratings, so you can choose the suitable one for your house. Make sure that the shape and size of the area you plan to install the panel is enough for your panel number. If you think it’s complex to calculate, Corigy can provide a full system to you. Below are some examples for your reference: 1. Small Size Family Power consumption 2Kwh，back up 5 days. You can choose our 2KW Off-Grid Power Storage System. This system equipped with 6pcs of 370W solar panel and 2pcs of 5.12Kwh battery 2. Medium Size Family Power consumption 4Kwh，back up 5 days. You can choose our 5KW Off-Grid Power Storage System. This system equipped with 14pcs of 370W solar panel and 4pcs of 5.12Kwh battery 3. Large Size Family Power consumption 8Kwh，back up 5 days. You can choose our 10KW Off-Grid Power Storage System. This system equipped with 28pcs of 370W solar panel and 8pcs of 5.12Kwh battery CORIGY SOLAR more professional and flexible solar mounting solutions waiting for you here! CONTACT US! Above news from CORIGY SOLA...

The off-grid solar system is mainly composed of solar modules, mounting brackets, off-grid inverters, batteries, etc. The system will first meets the need of the user's load, and then stores the excess power in the battery for use at night and in rainy days. When the battery is dead, the diesel generator can also be used as a supplementary energy source to supply power to the load. The design of the off-grid solar system is different from the grid-connected power generation system, which needs to consider the user's load, daily electricity consumption, local climate conditions and other factors. Supplier need to choose different design schemes according to the actual needs of customers. In order to ensure that the off-grid system can work reliably, it is very necessary to do a good job of customer demand investigation in the early stage. 1. Inverter selection. Determine the inverter power according to the user's load power and type The selection of inverter power should generally not be less than the total load power. But considering the service life of the inverter and subsequent capacity expansion, it is recommended that the inverter power should be considered with a certain margin. In addition, if the load contains inductive loads with electric motors such as refrigerators, air conditioners, water pumps, range hoods, etc. the starting power of the load needs to be taken into account, that is, the starting power of the load should be less than the maximum impact power of the inverter 2. Component capacity determination. Determine the component capacity according to the user's daily electricity consumption and light intensity Part of the electricity generated by photovoltaic modules during the day is supplied to the load, and the remaining part is used to charge the battery. At night or when the solar radiation is insufficient, the electricity stored in the battery will be discharged to the load for use. It can be seen that in the absence of commercial power or diesel engines as supplementary energy, all the power consumed by the load comes from the power generated by the photovoltaic modules during the day. Considering that the light intensity of different regions will be different in different seasons, in order to ensure the reliable operation of the system, the capacity design of photovoltaic panels should be able to meet the demand even in the season with the worst light. 3. Determination of battery capacity. Determine the battery capacity according to the night power consumption or backup time The battery of the off-grid solar system is mainly used for energy storage to ensure that the load can work normally when the solar radiation is insufficient. For off-grid solar systems with important loads, the design of battery capacity needs to consider the longest local rainy days. The load power supply requirements of ordinary off-grid solar systems are not high. Considering the cost of the system, the number of rainy days can be ignored, and the...

As the core of the power station, the life of the inverter affects the normal operation of the entire power station. The life of the inverter has become a problem that everyone is very concerned about. So what are the factors that affect the life of the inverter? Temperature is one of the important factors affecting the life of the inverter, especially for components such as electrolytic capacitors and optocouplers. For every 10°C increase in temperature, the life of electrolytic capacitors is reduced by half. Excessive temperature will also accelerate the light wane of optocouplers. When the relay is switched at zero current, its life is 1 million times. However, as the current increases during switching, the life is almost exponentially attenuated. Precise software control makes the relay switch at zero current, which is the key factor to ensure the life of the relay. The working environment of the inverter is generally poor. And there are many interference factors, such as poor power grid quality, large local inductive load, etc. If the inverter protection function and EMC design are not good, it is easy to be disturbed by the outside world. Once the IGBT If the drive is disturbed, it is easy to cause it to misconnect and cause the machine to explode. Although the string inverter has an IP65 protection level and can be installed both indoors and outdoors. But the installation environment also has a great impact on the life of the inverter. If the inverter is installed in an environment with direct sunlight, humidity, and high pH, the life of the inverter will be shortened. And in an environment exposed to the sun, it will easily cause the inverter to overheat and reduce the load, which will affect the power generation. Therefore, choosing a suitable installation environment is also a key factor to ensure the life of the inverter. Corigy’s inverter has the characteristics of long life, safety and stability. Inquire is welcome. CORIGY SOLAR more professional and flexible solar mounting solutions waiting for you here! CONTACT US! Above news from CORIGY SOLAR Sales & Marketing department Phone: +0086-592-6883200 E-mail: sales@corigy.com

Power storage battery is a important part of solar system. How to maintain the power storage battery? 1. Charging current Too large or too small charging current will affect the service life of the battery. 2. Charging voltage If the charging voltage is too high, the battery will easily lose water, heat and deform, otherwise the battery will be insufficiently charged and the charging voltage will be abnormal, which may be caused by the wrong configuration of the charger, or caused by the fault of the charger. 3. DOD depth of discharge During the use of the battery, the percentage of the capacity released by the battery to its rated capacity is called the depth of discharge (DOD). The depth of discharge is closely related to the life of the battery. The deeper the depth of discharge, the shorter the charging life. Therefore, deep discharge should be avoided as much as possible during use. The battery discharge depth is about 10% to 30% is shallow cycle discharge. The discharge depth is about 40% to 70% is medium cycle discharge. And the discharge depth is about 80% to 90% is deep cycle discharge. Generally speaking, the deeper the daily discharge depth of the long-term operation of the battery, the shorter the battery life, and the shallower the discharge depth, the longer the battery life. Shallow cycle discharge is beneficial to prolong battery life. The shallow cycle operation of the battery has two obvious advantages: first, the battery generally has a longer cycle life. Second, the battery often maintains more backup ampere-hour capacity, which makes the power supply guarantee rate of the photovoltaic system higher. According to actual operating experience, a more moderate depth of discharge is 60% to 70%. 4. Battery installation The battery should be installed in a clean, cool, ventilated and dry place as far as possible, and should be protected from the influence of sunlight, heaters, or other radiant heat sources. Batteries should be placed at attention and not tilted. The terminals between each battery should be firmly connected. 5. The environment temperature The temperature greatly affects the battery. If the temperature is too high, the battery will overcharge and generate gas. If the temperature is too low, the battery will not be charged enough, which will affect the service life of the battery. Therefore, the temperature of about 25℃ is the best. 6. Regular maintenance The battery should be checked regularly after a certain period of use, such as observing whether its appearance is abnormal, measuring whether the voltage of each battery is average, etc. If there is no power outage for a long time, the battery will always be in a charged state, which will deteriorate the activity of the battery. Therefore, even if the power is not outaged, it is necessary to conduct regular discharge tests to keep the battery active. The discharge test can generally be carried out once every three months. The method is that the inverter is loaded, pr...

The impact of lightning on solar inverter is divided into two types： "Direct Lightning Flash" and "Indirect Lightning Flash". "Direct Lightning Flash" means that the inverter is directly struck by lightning. "Indirect Lightning Flash" means that when a nearby lightning strike occurs, the electric energy generated by the lightning strike is conducted through the transmission lines and grounding wires in the photovoltaic power system. And a voltage far exceeding the rated level is applied to the power generation equipment, thereby causing damage to the equipment. Regarding direct lightning flash, it can basically be avoided by reducing the height of the photovoltaic system from the ground during design. The MW-level photovoltaic power station with low ground height has almost never been struck by lightning, and it can be said that a direct lightning strike will hardly affect it. However, photovoltaic power plants in mountainous areas and other places may still be struck by lightning. At this time, it is necessary to take measures to install lightning rods or lightning conductors around the solar panels. In terms of direct lightning flash, lightning that falls on buildings or the ground near the photovoltaic power station will cause the electric potential of the grounding part of the power generation equipment to rise. Electric potential can cause transient abnormally high voltages - surge voltages in main circuits of the power generation equipment such as the Power Control System. This voltage can damage the insulation within the power generating equipment, causing damage to the equipment. As a countermeasure, the junction box and Power Control System are generally equipped with a Surge Protective Device (SPD) that responds to intrusion induced lightning surge voltages. SPD uses a mechanism that short-circuits occur when a voltage above a certain level is applied to prevent damage to power generation equipment. In addition, the communication of monitors for remote monitoring generally uses optical cables instead of metal cables that are easily affected by lightning strikes. CORIGY SOLAR more efficient and flexible solar mounting solutions waiting for you here! CONTACT US! Above news from CORIGY SOLAR Sales & Marketing department Phone: +0086-592-6883200 E-mail: sales@corigy.com