The selection of low-voltage general-purpose ac drives includes two aspects: type selection and capacity selection. The principle of selection is: first of all, its functional characteristics can ensure reliable realization of process requirements, and secondly, to obtain a better performance-price ratio.

The identification of "Provincial Enterprise Technology Center" marks that Xichi Electric's research and development capabilities and innovation system construction have reached a new level. We will give full play to the core role of the technology center in promoting technological innovation of enterprises.

Under the guidance of the brand strategy, Xichi Electric will improve brand social awareness, recognition, and user reputation and loyalty. Promote the improvement of the core competitiveness of the enterprise through brand building, making Xichi an independent brand with international influence.

Through a series of exchange activities during this trip, the friendly relationship between Xichi Electric and the Water Conservancy and Hydropower Design Institutes has been deepened, the foundation of cooperation has been consolidated, and the popularity and influence of the Xichi brand have been enhanced.

Using VFD for speed regulation, it is convenient to realize multi-stage speed regulation of mining winches, and improve system stability and safety. It reduces operation failures and downtime, saves manpower and material resources, improves coal transportation capacity, and also has considerable indirect economic benefits.

The VFD has achieved remarkable power-saving effect when used in the drive control of fans and pumps. It is an ideal speed control method. It not only improves the equipment efficiency, but also meets the production process requirements, and greatly reduces the equipment maintenance and repair costs, and also reduces the shutdown period.

The high-voltage variable frequency drive we usually call, the input power supply voltage is generally above 3kV, which is a high-power VFD. There are many types of VFDs, and the classification methods are not the same. The three basic classifications of high-voltage VFDs are listed below, with an introduction to each type of VFD.

There are many setting parameters for variable frequency drives, and each parameter has a certain selection range. In practical applications, it is not necessary to set and debug every parameter, and most of them only need to use the factory settings. Individual parameters need to be set and debugged according to the actual situation.

Xichi Electric hopes to contribute to the education and training of talents in the power electronics industry through this donation. And we also hope to continue to deepen school-enterprise cooperation, complement each other's advantages and develop together, achieve mutual benefit and win-win for both parties.