220 v solar street light

In the face of all kinds of miscellaneous collection on market, known and unknown controller products, our street lamp lighting factory technicians Liang Gong to talk about the solar controller, should choose what kind of, what are the basic choices point. Solar street lamps controller in

in the face of the market a variety of well-known and unknown controller products, our street lamps factory lighting technician hong liang told you should choose what kind of solar controller, what are the basic option. Throughout the solar street light system, solar street lamps controller has a very low cost ratio, but it plays a big role. If choose undeserved, stability and service life of the whole system will be greatly reduced. Relatively mature controller can also reduce the cost of the whole system, through the function to achieve the purpose of cost savings. Let's take a brief compare to conventional controller and some of the major industrial controller performance: 1. Some customers often find exit protection voltage, solar road light after a period of time, especially after continuous rainy days, street lamps for days or even days, it will light, the battery voltage is normal, no fault in the controller and the light. The problems of many engineers. In fact, this is; Exit the under-voltage protection; The higher the value is set, the longer the recovery time after undervoltage, this will lead to many days can't light up. In order to solve this problem, industrial controller allows each user according to the configuration Settings out of the voltage protection. However, it is worth noting that the panel configuration must be reasonable. If panels, charging capacity can't meet the discharge capacity on the night, in the long run, the battery will often in the depth of discharge state, can greatly shorten the service life. Therefore, panel configuration must be expanded. The panel configuration, the greater the exit to protect the lower voltage can be set up, this will not affect the battery. 2: light emitting diode lamp constant current output due to its own characteristics, light-emitting diodes (leds) must be constant current or current limiting, otherwise can't normal use. Ordinary light emitting diode lamp by adding another driving power to realize constant current for led lamp, but the driver accounted for about 10% of the total power lamp - 20%, for example, a theoretical value for 42 w leds light, drive after the actual power of about 46 - 50W。 When computing power of solar panel and battery capacity must be increased 10% 20% to meet the driving power. In addition, the driver, the more failures the more links. Industrial controller USES the software of constant current, no power consumption, high stability, lower overall power consumption. Three: common controller output cycle only closed for a few hours, such as four hours of lights, or eight hours, this cannot meet the needs of many customers. Industrial version of the controller can be divided into three cycles, each cycle time can be set freely. According to the use of different environment, each cycle can be set to closed. Four: light emitting diode lamp output power control in solar lamp, led lamp is most suited to control the output pulse width of different power. At the same time of pulse width and current limiting, adjusting the ratio of total output leds light empty. For example, when a single 1 w leds is a device at night is discharging, can adjust the power in the middle of the night and early in the morning, 15 w, such as the middle of the night in the early morning of 25 w, and can lock current, can satisfy all night lighting, to save battery panel and the configuration of the battery cost. Long-term experiments show that the pulse width adjustable light emitting diode lamp produces much less heat, can prolong the service life of leds. In order to save electricity at night, some lamps factory two power supplies are installed in light emitting diode lamp, and a power shut down during the night, to achieve the output power in half. However, the practice proved that this method can only lead to a half light sources do not match the first light attenuation, brightness or early damage of a light source.