Off-grid solar power generation system is consists of solar battery pack,controller and storage battery,it still need allocate AC power inverter if to supply power electricity for alternating current load.
1.Solar battery panel is the core of solar generator system,its function is to output direct-current to store into storage battery after solar power converting to be electric power.Solar battery panel is one of very important parts of solar power system.What it is the important factor of use value of solar battery panel is conducted by its transforming rate and lifespan.To adopt 36pcs or 72pcs polycrystalline silicon solar battery in series connection get various components of 12V or 24V. These components can be applicable for various photovoltaic system,independent photovoltaic power station and grid-connect photovoltaic power station,etc.
2.Solar controller specially operate CPU,electronic components,indicator and power on/off,etc.Its main feature is as below:
1).It is intelligent control by utilizing singlechip and professional software.
2).It can utilize the discharge characteristic of storage battery to revise the correct discharge control.The final discharge voltage is the controllable point of discharge rate curve which has eliminated the incorrect of simply voltage control over-discharge.It comply with the fixed personality of storage battery,in other words,there is different final voltage for different discharge rate.
3).It is completely auto control,such as over-charge,over-discharge,short circuit and over-load protection,which doesnĄ¯t damage any component,the fuse canĄ¯t be broken.
4).To adopt series connection PWM charging circuit,makes this voltage loss of charging circuit be reduced lower a half than diode,the charging efficiency is higher 3% ~ 6% than none PWM,which increases this time of electricity use.The float charging control mode make system have more long lifespan.Simultaneously have high precision temperature compensation.
5).Users can easily know its use state by the directly LED indicator.
.All of control adopt standard industrial chip,it can easily work under cold weather,high temperature and wet circumstance.To utilize silicone vibration timing control simultaneously,precision timing control.
3.The function of storage battery pack is to store electricity power when having solar radiation power to make solar power convert to be electricity power which can discharge when having request.Solar storage battery pack is used in photovoltaic power generator system,its material have lead-acid battery without maintenance,ordinary lead-acid battery, rubber battery and alkalinity Nickel-cadmium battery.The lead-acid battery without maintenance and rubber battery are widely used for solar storage battery because of none maintenance and least environmental pollution,it is very applicable for reliable solar power system,special for those position of unattended operation.
Usually, the directly output of solar power is DC12V, DC24V, DC48V. In order to provide AC220V for home appliances,the direct-current of solar power system need be converted to alternating current (DC-AC),this equipment of converting is power inverter.
Off-grid solar power generation system is applicable for those inhabitant who live in remote area where is lacking of electricity.It can provide them power electricity for lighting illumination,television and washing machine,etc.Off-grid power generator station is controlled by photovoltaic assembly to store electricity power into storage battery pack,which can provide AC or DC for use at any time.
