The correct selection of the variable frequency power supply is very important for the normal operation of the electrical control system of the mechanical equipment. To choose a variable frequency power supply, first of all, it is necessary to decide which control method and protective structure of the variable frequency power supply are most suitable according to the type of mechanical equipment, load torque characteristics, speed regulation range, static speed accuracy, starting torque and the requirements of the use environment. The so-called combined use is to achieve the best cost performance for variable frequency power applications under the premise of meeting the actual process production requirements of mechanical equipment.
The first point is to select a uv variable frequency power supply with an appropriate control method according to the load characteristics.
Nowadays, there are a wide variety of variable frequency power supplies on the market, and their functions are becoming more and more powerful. The performance of variable frequency power supplies has increasingly become the decisive factor for the quality of speed regulation. In addition to the "innate" conditions of the manufacturing process of the variable frequency power supply, the use of variable frequency power supplies What kind of control method is also very important. The following summarizes the performance characteristics of various variable frequency power control methods in recent years. As mentioned above, if different control methods are selected for variable frequency control of asynchronous motors, speed regulation characteristics with different performance characteristics can be obtained.
The second point is to select the protective structure of the variable frequency power supply according to the installation environment
The protective structure of the variable frequency power supply must be adapted to its installation environment, which must consider factors such as ambient temperature, humidity, dust, pH, and corrosive gases, which have a major bearing on the long-term, safe and reliable operation of the variable frequency power supply.
