The little secret of ground cage technology

Constant Current Accuracy of Ground Cage Power Supplies Some power supplies on the market have poor constant current accuracy. For constant current solutions such as popular recommended solutions on the market, the error reaches ±8%, and the constant current error is too large. The general requirement is ±3%. According to the 3% design scheme. The production power supply must be fine-tuned to achieve ±3% error.
Dispersion of the ground cage: Although the total amount of solar radiation reaching the earth's surface is large, the energy flow density is very low; ②Instability: Due to the limitations of natural conditions such as day and night, season, geographic latitude, altitude, and sunny and cloudy days Due to the influence of random factors such as cloud and rain, the solar irradiance reaching a certain ground is intermittent and extremely unstable, which increases the difficulty of large-scale application of solar energy; ③ Low efficiency and high cost: At present, some aspects of the development level of solar energy It is theoretically feasible and technically mature, but some solar energy utilization equipment cannot compete with conventional energy economically due to its low efficiency and high cost.
What is the most suitable working current of LED street light power supply? For example, the rated working current of LED street light is 350ma. Some factories run out from the start. Designed to be 350 mA. In fact, the operating heat at this current is very severe. After many comparative tests, the design of 320Ma is ideal. Minimize the calorific value and convert more electrical energy into visible light energy.
The LED street light is a cantilever structure. In its natural environment, it is sheared by the wind and suspended aloft. Structural safety comes first. Therefore, the structure should be simplified as much as possible, and the design should be streamlined to reduce wind resistance, increase rainwater flow, and pay attention to reducing weight. First, thrift and save non-ferrous metals; second, reduce the pressure caused by weight and improve the safety of road lighting.
Isolated/non-isolated
Under normal circumstances, if the isolated power supply is 15W and placed in the LED street light power tube, the transformer is very large and difficult to install. It mostly depends on the spatial structure, which depends on the situation. Generally speaking, the isolation can only reach 15W, rarely more than 15W, and the price is very expensive. Therefore, isolation is not cost-effective. Generally speaking, non-isolation is the mainstream, the volume can be smaller, and the minimum height is 8mm. In fact, there is no problem with non-isolated security measures. It can also be used as an isolated power supply if space permits.