According to the power rules of the power grid and the characteristic requirements of the LED drive power supply, the following points should be considered when selecting and designing the LED drive power supply:
1. High reliability: It is especially like the driving power supply of LED street lights. It is difficult to maintain and costly to install at high altitude.
2. High efficiency: LED luminous efficiency decreases with increasing temperature, so heat dissipation is very important. Especially the power supply is installed in the lamp
LED is an energy-saving product with high drive power efficiency, low power consumption, and low heat generation in the lamp, which is beneficial to reduce the temperature rise of the lamp. Delay LED light decay.
3. High power factor: Power factor is the requirement of the power grid on the load. Generally, there are no mandatory indicators for electrical appliances below 70 watts. Although the power factor of a single electrical appliance with low power is low, it has little effect on the power grid, but if everyone lights up at night, the similar loads are too concentrated, which will cause serious pollution to the power grid. For LED driving power supplies of 30 watts to 40 watts, it is said that in the near future, there may be certain index requirements for power factor.