The frequency converter is used in many industries. The technical content of the frequency converter is getting higher and higher. The application range is wider and wider. With the development of electronic technology, the frequency converter market has increased year by year in recent years, and the performance of the frequency converter can be more and more High, what is the development trend of the inverter? The application of the inverter has a history of more than 200 years. Now the inverter volume tends to be small. How do we judge the performance of a frequency converter?
1. It depends on how much energy loss (ie efficiency) it has.
2. It depends on its harmonic pollution and input power factor to the grid.
3. Look at the influence of the harmonics of the output AC voltage on the motor.
The development trend of frequency converters is driven by: communication, networking and intelligence. As an important power conversion component of the system, the frequency converter has been developed rapidly by providing a controllable high-performance variable-voltage variable-frequency AC power supply.
The frequency converter has basic functions such as voltage regulation, frequency modulation, voltage regulation and speed regulation. AC-DC-AC is the development trend of the inverter:
1. The control method of the pulse width modulation transformer can be controlled by sine wave pulse width modulation (SPWM), eliminating PWM control of specified harmonics, current tracking control, and voltage space vector control (magnetic flux tracking control).
2. The self-shutdown, modularization and intelligentization of the main circuit power switching components, the switching frequency is continuously improved, and the switching loss is further reduced.
In general, the development direction of the inverter is more and more intelligent. The inverter is used to save power. The motor with the inverter is installed. It can save 15%-65% according to the working conditions. If the power consumption of the enterprise is very large. The remaining power is amazing. China is an industrial power, and there will be more and more places to use inverters. The market potential of inverters in China is huge. However, the gap in the inverter market is very large now, and the inverter market will become better and better in the future. More professional inverters will also be born with the development of technology.
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Label: How to accurately judge the performance of the inverter!
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