Development Trends of the Variable Frequency Drive Market in China

2020-04-18

Frequency Converter Used in many industries, the technical content of frequency converters is increasing and their application range is expanding. With the development of electronic technology, the frequency converter market has been growing year by year in recent years, and the performance of frequency converters is getting higher and higher. What is the development trend of frequency converters? Frequency Converter Application has a history of more than 200 years. The current frequency converters tend to be smaller in size. How do we judge the performance of a frequency converter?

1. Look at the energy loss itself (i.e., efficiency).

2. Look at its harmonic pollution to the power grid and input power factor.

3. Look at the impact of the harmonic of the output AC voltage on the motor.

Frequency Converter The development trend is driven by: AC drive, networking, and intelligence. As an important power conversion component of the system, frequency converters provide controllable high-performance voltage and frequency conversion AC power supply and have developed rapidly.

Frequency converters have basic functions such as voltage regulation, frequency regulation, voltage stabilization, and speed regulation, AC power —DC—AC is the development trend of frequency converters:

1. The control methods of pulse width modulation voltage frequency converters can use sinusoidal pulse width modulation (SPWM) control, PWM control to eliminate specified order harmonics, current tracking control, voltage space vector control (flux linkage tracking control).

2. The main circuit power switch components are becoming self-turn-off, modular, and intelligent, with switching frequency continuously increasing and switching losses further reduced.

The overall development direction of frequency converters is becoming more intelligent. Frequency converters are used to save electricity. Motors equipped with frequency converters can save electricity according to working conditions. 15%-65%. If a company consumes a large amount of electricity, the remaining electricity saved is very significant. China is a major industrial country, and the use of frequency converters will become more and more widespread. Frequency Converter The market potential in China is very huge. However, there is currently a huge gap in the frequency converter market, and the market will get better and better in the future. More specialized frequency converters will also be born with the development of technology.