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How to choose the wireless solar street light controller correctly

(Summary description)The wireless solar street light controller occupies a relatively low cost in the entire solar street light system. Although it looks like a small accessory, it plays an important role. If it is incorrectly selected, the stability and service life of the entire system will be greatly compromised.

How to choose the wireless solar street light controller correctly

(Summary description)The wireless solar street light controller occupies a relatively low cost in the entire solar street light system. Although it looks like a small accessory, it plays an important role. If it is incorrectly selected, the stability and service life of the entire system will be greatly compromised.

Information

The wireless solar street light controller occupies a relatively low cost in the entire solar street light system. Although it looks like a small accessory, it plays an important role. If it is incorrectly selected, the stability and service life of the entire system will be greatly compromised. A relatively mature controller can increase the reliability of the system and reduce the cost of the entire system, achieving the goal of saving costs. In view of the requirements of the above functions, the following will do some analysis.

wireless street light controller

1. Solar panel design
Some customers often find that after solar street lights are on for a period of time, especially after continuous rainy days, the street lights will not turn on for several days or even many days; therefore, when designing a street light system, the configuration of solar panels must be designed reasonably; If the daily charge capacity of the battery panel cannot meet the discharge capacity that night, if things go on like this, the battery will often be deeply discharged and its life will be greatly shortened, so the battery panel configuration must enlarge the margin;

2. LED light constant current output
Due to its own characteristics, the LED must have a constant current output, otherwise it cannot work normally. Common LED lights are realized by adding a driving power supply to achieve constant current to the LED lights, which increases the cost, increases power consumption, and reduces the reliability of the entire system; therefore, they are now integrated with constant current control. The wireless solar street light controller has a built-in constant current drive and is made into an all-in-one machine. It uses software to perform non-power consumption and constant current, which has high stability and reduces overall power consumption and cost.

3. Output period
At present, the wireless solar street light controller is designed into 3 time periods or 4 time periods, and the time of each time period can be set arbitrarily. According to the different use environment, each time period can be set to the off state. For example, if there are no people in some factories or scenic areas at night, you can close the second time period (late night), or close the second, third, and fourth time periods to reduce usage costs.

4. LED light output power adjustment
LED lights are most suitable to achieve different output power through pulse width adjustment. While limiting the pulse width or current, adjust the duty cycle of the entire output of the LED lamp. For example, a single 1W LED 7 series and 5 LED lamps totaling 35W can be discharged at night, and the late night and early morning periods can be separately performed Power adjustment, such as adjusting to 15W in the middle of the night and 25W in the early morning, and locking the current, so as to meet the lighting all night, and save the cost of battery boards and storage batteries. In addition, the pulse width adjustment method of the LED lamp, the heat generated by the whole lamp is much smaller, which can prolong the service life of the LED.

5. MPPT charging mode wireless solar street light controller
The MPPT charging mode wireless solar street light controller tracks the maximum current of the battery panel without causing waste. By detecting the battery voltage and calculating the temperature compensation value, when the battery voltage is close to the peak value, the PWM trickle charging method is adopted, which can both Fully charging the battery also prevents overcharging of the battery.

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