Problems that Should be Paid Attention to in Solar Street Lighting
2022-03-04
Problems that should be paid attention to in solar street lighting
1. LED street lamp power constant current accuracy. The constant current accuracy of some power supplies on the market is poor. For example, the popular recommended solutions on the market generally require ±3%. According to the 3% design scheme. The production power supply must be fine-tuned to achieve ±3% error.
2. LED street light power supply must be constant current. The characteristics of LED lighting materials determine that they are greatly affected by the environment. As the temperature change increases, the current to the LED increases, and as the voltage increases, the current to the LED also increases. LED constant current is to ensure that its operating current value remains unchanged when environmental factors such as temperature and voltage change.
3. The working voltage of the LED street light power supply. The recommended working voltage of LED is generally 3.0-3.5v. After testing, most of them work at 3.2V, so the calculation formula of 3.2V is more reasonable.
4. In order to make the LED street light power supply work within the wide input voltage range of AC85-265V, the series-parallel mode of the LED light board is very important. When the input voltage is 220V, the output voltage can reach 156v. In other words, the number of strings in series must not exceed 45. The number of parallel connections should not be too much, otherwise the working current will be too large and the power supply will heat up seriously. Sino-American New Energy believes that a wide range of voltage schemes also exist. APFC active power compensation is to use L6561/7527 to increase the voltage to 400V first, and then reduce the voltage, which is equivalent to two switching power supplies. This scheme is only used under certain conditions.
5. What is the most suitable working current of the LED street light power supply. For example, the rated operating current of an LED is 350ma. Some factories run out at the start and are designed for 350mAh.
1. LED street lamp power constant current accuracy. The constant current accuracy of some power supplies on the market is poor. For example, the popular recommended solutions on the market generally require ±3%. According to the 3% design scheme. The production power supply must be fine-tuned to achieve ±3% error.
2. LED street light power supply must be constant current. The characteristics of LED lighting materials determine that they are greatly affected by the environment. As the temperature change increases, the current to the LED increases, and as the voltage increases, the current to the LED also increases. LED constant current is to ensure that its operating current value remains unchanged when environmental factors such as temperature and voltage change.
3. The working voltage of the LED street light power supply. The recommended working voltage of LED is generally 3.0-3.5v. After testing, most of them work at 3.2V, so the calculation formula of 3.2V is more reasonable.
4. In order to make the LED street light power supply work within the wide input voltage range of AC85-265V, the series-parallel mode of the LED light board is very important. When the input voltage is 220V, the output voltage can reach 156v. In other words, the number of strings in series must not exceed 45. The number of parallel connections should not be too much, otherwise the working current will be too large and the power supply will heat up seriously. Sino-American New Energy believes that a wide range of voltage schemes also exist. APFC active power compensation is to use L6561/7527 to increase the voltage to 400V first, and then reduce the voltage, which is equivalent to two switching power supplies. This scheme is only used under certain conditions.
5. What is the most suitable working current of the LED street light power supply. For example, the rated operating current of an LED is 350ma. Some factories run out at the start and are designed for 350mAh.
