Industrial energy conservation has increasingly become one of the cores of industrial development. Due to its flexible speed regulation function, frequency converter products have obvious advantages in the field of power energy conservation. In terms of the current development trend, the frequency converter industry will continue to follow the development path of speed regulation and energy saving.

Frequency converter is an important component equipment of industrial control system, which is installed in the front end of the motor to realize speed regulation and energy saving. The rear end of the high-voltage inverter mainly drives the loads of fans and pumps, and the actual power saving effect is 30% - 60%. In the future, the market development of this industry will benefit from the transformation of large and medium-sized projects; The low-voltage inverter, together with the equipment at the control level and the executive level, forms an automatic control system, and its future development will benefit from the "equipment upgrading" of the manufacturing industry.

Obvious application advantages of frequency converter industry; clear industrial planning in the 12th Five Year Plan

Frequency conversion technology was first used to stepless speed regulation of the motor, and the output frequency was changed by controlling the on-off of semiconductor devices, so as to realize the soft start, frequency conversion speed regulation and improve the operation accuracy of the back-end drive AC motor, and realize the overcurrent, overvoltage and overload protection.

Compared with the past mechanical speed regulation methods, the range of variable frequency speed regulation is wide, which can reach 100% - 5%; The regulation accuracy is high, which can reach ± 0.5%; Because it is stepless speed regulation, it can realize the soft start of the motor and the full-automatic control of the whole production system, so as to reduce the impact on the power grid.

Relevant experts compared the effects of several major energy-saving products in electrical equipment. Among them, the efficiency of frequency converter is as high as 30%~60%. When using, it only needs to be installed in the front end of the motor, and the original equipment is slightly changed.

Therefore, in the manufacturing equipment upgrading and industrial energy conservation and environmental protection projects proposed in the 12th Five Year Plan, it is established that the future development of the industry will still follow the path of "speed regulation and energy conservation". Subdivided into products, it is expected that the main line of low-voltage inverter is automation transformation and import substitution, and domestic enterprises will focus on the development of control and drive technology; Relying on the national energy conservation and environmental protection policies, the downstream of high-voltage inverter is still dominated by the transformation of large-scale industrial equipment such as electric power, metallurgy, cement, etc., and the intensification of competition will stimulate the localization and acceleration of high-performance products.