Nowadays, the function of domestic inverters is becoming more and more mature, with a wide variety and dazzling. Many brands have been tested by the market, but there are also some brands that have been imitated and counterfeited to disrupt the market. One of the major characteristics of domestic brands is that they are both like domestic brands and imported brands. The appearance of the brand is similar, the appearance of a domestic brand is similar to another domestic brand, etc., which makes it impossible to see the connotation and foundation of a brand, and it is also simple for people to make wrong judgments and choices when using it.
This requires us to have a unique vision when selecting the inverter, and carefully observe the external technology and connotation strength of the inverter. How to identify an inverter:
The impression given by the inverter is the visual impact of the appearance, just like a mobile phone, giving an impression. A good inverter, with a novel and unique appearance and a unique streamlined body, makes it even more tense. Such enclosure planning requires outline planning, mold opening, and layout of internal components. In mass production, the costs are already very high. Generally speaking, imported brand inverter companies will invest a lot in this area.
However, domestic inverter brands do not have the strength to invest in these improvements, making domestic brands look square and unrecognizable at first glance. This requires us to carefully observe what brand of abrasives the shell template is made of, and whether it is an outdated type in order to distinguish the potential of this manufacturer. The appearance is actually not more important, but the workmanship can show the strength of a brand, and the cost can be roughly seen in details such as shell material and flame retardant value. Flip open the case and see if the layout of the board inside makes sense. Whether the steps of the housing and circuit board are user-friendly, some inverters cannot be turned over or screwed inside. How can you flip it open for protection?
The workmanship of the circuit board is also known at a glance, whether it is a machine patch, whether there is a conformal coating, how many layers of the circuit board there are, whether there is virtual soldering, whether there are copper wires running back and forth on the circuit board, which can be seen the strength of a company in the planning and layout of the circuit board. Poor layout can also be dangerous for the drive. Then it depends on whether the inverter module is an imported brand and the present value of the module. These have a direct impact on the service life of the drive, as well as the capacitance of the drive. Whether the production capacity is sufficient depends on whether the brand is a big brand. These can also affect the functionality of the drive. Look at the air duct of the inverter. The air duct planning is reasonable, which can greatly improve the heat dissipation ability of the inverter. Otherwise, the inverter will be simple. It often fails.
A more straightforward way to test the quality of the inverter software is to increase the load test. The low frequency and high torque are a direct and useful way to test the inverter algorithm. After changing the parameters, modulate the inverter within 5HZ to see if the torque of the load motor is weakened. To see whether the motor speed is uniform, to observe whether the output waveform of the inverter is good, to start and stop frequently in a short time, to see the peak value of current and voltage, these methods can test the function of the inverter software.
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