Overview of the development of low-voltage VFD (Variable-frequency Drive) industry

(1) Low-voltage VFD (Variable-frequency Drive) industry development

VFD (Variable-frequency Drive) integrates microelectronics, power electronics, control technology and embedded software technology. By converting fixed-frequency AC power into voltage-adjustable and frequency-adjustable Accurate control of torque; it plays a prominent role in improving production technology, saving electric energy, and improving production automation. VFD (Variable-frequency Drive) is not only a variable frequency power supply, but also one of the core components in industrial automation products.

Taking the grid voltage level of the input VFD (Variable-frequency Drive) as the division standard, VFD (Variable-frequency Drive) can be divided into low-voltage, medium-voltage and high-frequency conversion technology. In the early 1980s, Fuji, Sanken, etc. Enterprises introduced into China. With the rapid development of Chinese economy, the application range and market size of VFD (Variable-frequency Drive) are gradually expanding, and a large number of VFD (Variable-frequency Drive) manufacturers in China have emerged, and the market is showing a trend of rapid growth. In this process, it has been developed. At present, a group of VFD (Variable-frequency Drive) manufacturers with certain strength have been formed in China.

(2) Application and market size of low-voltage VFD (Variable-frequency Drive)

VFD (Variable-frequency Drive) has a wide range of applications. At present, low-voltage VFD (Variable-frequency Drive) is widely used in industries such as textile printing and dyeing, elevators, hoisting machinery, metallurgy, electric power, petroleum and petrochemical, construction, municipal, chemical, building materials and machine tools, etc. At the same time, in some original In industries such as rail transit and refrigeration, which use less frequency conversion technology, the growth of VFD (Variable-frequency Drive) applications is also very strong.

In recent years, Chinese low-voltage VFD (Variable-frequency Drive) industry has developed rapidly. Since 2007, the overall market size has reached more than 10 billion yuan. Although the entire industry was affected by the global financial crisis in 2008 and 2009, the overall market still maintained positive growth. With the improvement of Chinese overall macro economy in 2010, the low-voltage VFD (Variable-frequency Drive) market will gradually recover to the crisis previous growth levels. In the future, with the rapid development of Chinese equipment manufacturing industry and Chinese continued implementation of low-carbon, green, and energy-saving development ideas, low-voltage VFD (Variable-frequency Drive), as one of the core equipment for advanced automation equipment and energy-saving transformation, will surely benefit In the new round of industrial upgrading and the rise of emerging industries. Based on this, it is expected that Chinese low-voltage VFD (Variable-frequency Drive) market will continue to maintain a double-digit growth trend in the next three years, and the overall scale is expected to exceed 23.5 billion yuan in 2013.

(3) Future development trend of VFD (Variable-frequency Drive)

VFD (Variable-frequency Drive) has the effect of significantly saving power and improving process control level, and is a core executive component of industrial automation. In the future, VFD (Variable-frequency Drive) will develop in the direction of customization according to the different requirements of industry customer segments; at the same time, the products will further reflect the differentiated development trend of low-end, mid-end and high-end different application functions. High-end products will develop in the direction of integrating synchronous and asynchronous control, open-loop and closed-loop control and servo functions, as well as powerful network communication functions.