independent electric power supply systems engineering design and installation training guide
Provide independent power systems design and independent electric power systems installation solutions, and talk about photovoltaic modules, inverters and system maintenance in power systems engineering
Talk about composition of the independent power supply system, including battery,controllerand other information
1. single stage voltage sensing controllerSingle-stage voltage sensing is often referred to as a hysteresis controller or dual voltage point controller, which operates with reference to the battery terminal voltage. When the voltage rises to a set value, the controller disconnects the power supply; when the voltage drops to a set value, the power supply […]
1. The goal of controlling the deviceThe battery is the “heart” of an independent power supply system and must be prevented from being overcharged (overcharging can lead to plate corrosion, gassing and moisture loss) and discharging below the cut-off voltage, which can lead to permanent damage to the battery and capacity loss. Damage from overcharging […]
1. CorrosionSulfuric acid will gradually corrode the lead plates, especially the positive plates. Excessive gassing, high operating temperatures (where acid chemistry is more active), and deep discharges can accelerate corrosion, allowing the acid to penetrate deeply into the plates. 2. overloadCurrents greater than those recommended by the manufacturer can cause heat generation, which accelerates corrosion, […]
1. Battery characteristicsFor independent power supply systems, the following points must be considered when selecting batteries:(1) How much energy needs to be stored in the battery.(2) Charge rate and discharge rate.(3) To what extent can the battery be discharged.(4) What is the voltage required by the battery.(5) How to judge whether the battery is overcharged […]
①Lithium-ion batteryLi-ion batteries are similar to lead-acid batteries in that there are positive and negative electrodes in the electrolyte, and lithium ions move from negative to positive during discharge and vice versa during charging. The negative electrode of a conventional lithium-ion battery is composed of carbon, the most common material being graphite. The positive electrode […]
1. All-vanadium redox flow batteryVanadium redox stores electrolyte components separately and transports them between cells. In an all-vanadium redox flow battery, the charge is stored in this solution, and when the solution is fully discharged, the battery is recharged. The energy of a battery depends on the volume of the stored solution, and its available […]
The nickel-cadmium battery was invented in 1899 and used commercially in the early 20th century. Its cost is more expensive than lead-acid batteries. Nickel-cadmium batteries usually have two types: sealed and open type. Smaller batteries are often sealed, while larger open-type batteries will be used in independent power supply systems. The self-discharge rate of nickel-cadmium […]
It is very economical to use lead-acid batteries in independent power supply systems. They are all composed of battery cells, each with a rated voltage of 2V. There are many different battery types in this category that can be adapted to various applications. include:(1) Traction battery. Used in forklifts, golf carts, etc., these batteries are […]