Application of SVG combined with LC reactive power compensation in manufacturing industry

Application of SVG combined with LC reactive power compensation in manufacturing industry

I. Overview

With the development of modern industrial technology, especially in the automotive manufacturing industry, there are many high-power spot welding machines. Spot welding machines have low power factor during operation, containing a large amount of reactive power and a small amount of harmonics, which have a negative impact on the operation of the power system.

Load characteristics of spot welding machine:

1. The spot welding machine has an extremely fast action time, with a welding duration of several hundred milliseconds and a fast welding frequency;

2. During the welding process of a spot welding machine, the welding current can instantly reach several to thousands of amperes depending on the welding material, which has a significant impact on the power grid;

3. During the welding process of the spot welding machine, a huge amount of reactive power is generated, resulting in a very low power factor of the power grid.

IIIntroduction to SFR series SVG combined with LC reactive power compensation function

　　SVG combined with LC reactive power compensation is a new type of power electronic device used for dynamic reactive power compensation. It can provide real-time compensation for dynamic reactive power to overcome the shortcomings of traditional LC reactive power compensation and achieve reactive power compensation function. It is widely used in manufacturing, power, metallurgy, petroleum, port, chemical, and industrial and mining enterprises.

1. Quick response

Quick response bySVG module implementation, SVG fast response time<50us, full response time<15ms

2. Good compensation characteristics

3. Good compensation effect

IIIDesign of reactive power compensation scheme for SVG&LC

4、 Project Summary

*Effectively solving the rapid change of reactive power compensation for spot welding machines and other equipment, the power factor at the incoming cabinets of each transformer meets the requirements of national standards, purifies the electrical environment, ensures the safe and stable operation of equipment, and greatly improves the effective utilization rate of electrical energy; Reduced distribution line losses, increased terminal voltage, and extended the service life of cables and equipment.