The boiler fan control system using D32 inverter has been put into operation for more than four years, and has achieved good economic and social benefits:

• The control device operates reliably and has a low failure rate; 

• Significantly less noise; 

• Precise regulation of hot smoke flow to meet production process requirements; 

• Extends the service life of the bearings of the motor and fan, reduces the heat generation of the motor, and greatly reduces the amount of maintenance; 

• The economic benefits are significant, and the entire investment increased by the frequency conversion control system can be recovered in more than one year.