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Design Principle1
PV system design
1. Stand-alone solar photovoltaic system design factors needed
Solar photovoltaic products require very high, The configuration of the solar system, solar panel installation angle and the ratio of the capacity of the battery's SOC and the controller will control the discharge is directly related to the overall system efficiency and service life, so according to the latitude in the use of the product and product use electric power, and how much time each day to ensure a few rainy days to determine the configuration of the product before they can set prices, the average reported a factory just to give you the price is not right, we Jiajie product configuration system is based on your latitude region , the product of the electric power, and how much time each day to ensure that the configuration of several rainy days, give you the prices quoted, so this configuration is also working to meet the requirements of your system is to optimize the most economical configuration.
Solar power system design considerations:
1,where the use of solar power system? The solar radiation situation?
2,the system load power?
3,the system output voltage is the amount of DC or AC?
4,the system need to work how many hours?
5,in case there is no sunlight in rainy weather, the system must supply the number of consecutive days?
6,load conditions, purely resistive, capacitive or inductive, starting current much?
7,the number of system requirements
(2) solar photovoltaic power generation system independent principle and system components
Stand-alone solar photovoltaic power generation system consists of solar modules, solar charge controllers, battery (group). If the output power to 220V AC or 110V, also need to configure inverter. The role of the various parts are:
(A), solar cell components: solar modules and solar power generation system in the central part of the solar system, the highest value. Its role is to convert solar energy into electricity stored in batteries or sent or delivered to the load of work.
(B), solar charge controller: solar charge controller is to control the entire system state, and played a battery charge protection, over-discharge protection. In the large temperature difference, the controller should have qualified temperature compensation function. Other additional features such as light control switch, when the switch should be the controller is optional;
(C), battery: general maintenance for the VRLA battery, gel batteries, etc., small micro-system, also used nickel metal hydride batteries, nickel cadmium batteries or lithium batteries. Its role is when there is light emitted by the solar cell module of the energy stored up, the need to re-release it.
(D), the inverter: direct solar energy output are generally 12VDC, 24VDC, 48VDC. In order to provide electrical power to 220VAC, you need to send the solar power system to convert DC to AC power, so the need to use the DC-AC inverter.
3 types of solar power
Solar photovoltaic systems in parallel
With the electricity grid, there are two forms, one is generated during the day and feed the meter all electricity sold by power companies, and then through the consumption meter to the electricity needed to power companies to buy. The other is if the excess electricity is sold back to electricity companies. If insufficient power to revert to the power company to buy back the required electricity.
Stand-alone solar photovoltaic system
Electricity generated by solar modules, solar energy through the electricity stored in battery charger, and then through the solar inverter, the direct current into alternating current to meet the needs of users. Independent of the solar system, primarily for remote households, roads, emergency telephones, remote sensors ... so electricity can not be reached at.
Disaster Prevention and solar photovoltaic systems
Electricity generated by solar modules, solar energy through the electricity stored in battery charger, and then through the solar inverter, the direct current into alternating current to meet the needs of users. Independent of the solar system, primarily for remote households, roads, emergency telephones, remote sensors ... so electricity can not be reached at.
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