Selection principles and considerations for LED street light power supply

LED street light power supply determines the driving of LED street light. The correct selection of LED street light power supply (type of LED street light power supply) is crucial for the normal operation of mechanical equipment electronic control system. When choosing LED street light power supply (LED street light power supply knowledge), we have to consider many factors and key points. So, in the process of choosing LED street light power supply, what aspects should we consider? Many people may not understand this.

Selection principles of LED street light power supply (selection of LED street light power supply)

First of all, we should decide which control mode and protective structure of LED street light power supply is most suitable according to the type of mechanical equipment, load torque characteristics, speed range, static speed accuracy, starting torque and use environment requirements. The so-called suitability is to achieve the best cost-effectiveness of LED street light power supply application under the premise of meeting the actual process production requirements and use occasions of mechanical equipment.

Factors to consider when choosing LED street light power supply

When choosing the speed control of LED street light power supply, it is necessary to consider the process requirements, savings, investment payback period and other aspects. If only considering the process requirements and savings, the following situations are more favorable to use variable frequency speed control:

According to the process requirements, the production line or a single device needs to adjust the motor speed according to the program or requirements. For example, the conveying system of the packaging machine needs to change the system conveying speed according to different types of products. The use of variable frequency speed regulation can make the speed control system simple, accurate, and easy to implement program control.

Using frequency conversion speed regulation instead of mechanical speed change, such as machine tools, can not only save the complicated gear box, but also improve the speed and meet the requirements of program control.

Using variable frequency speed regulation instead of gates or dampers to adjust the flow is suitable for fans, water pumps, compressors, etc. For example: the boiler water pump, blower, and induced draft fan have implemented variable frequency speed regulation control, which not only saves the servo amplifier, electric operator, electric actuator and water supply valve (or wind baffle), but also makes the entire boiler control system have fast dynamic response, high control accuracy and stability.

Key points for selecting LED street light power supply

The first point is to select the appropriate control method of the LED street light power supply according to the load characteristics

There are many types of LED street light power supplies on the market now, and their functions are becoming increasingly powerful. The performance of LED street light power supplies is becoming more and more a decisive factor in the quality of speed regulation performance. In addition to the "innate" conditions of the manufacturing process of the LED street light power supply itself, the control method used for the LED street light power supply is also very important. The following table summarizes the performance characteristics of various LED street light power supply control methods in recent years.

In summary, by selecting different control methods for asynchronous motor variable frequency control, speed regulation characteristics with different performance characteristics can be obtained.

The second point is to select the protection structure of the LED street light power supply according to the installation environment

The protective structure of the LED street light power supply must be adapted to its installation environment, which requires consideration of factors such as ambient temperature, humidity, dust, pH, corrosive gases, etc. This is of great importance to whether the LED street light power supply can operate long-term, safely, and reliably. ■