Advantage of Centrifugal Fan with Variable Frequency Motor by Xianrun Blower

Advantages of Centrifugal Fan with Variable Frequency Motor by Xianrun Blower:

1. Automatic control.Reduce the labour intensity, reduce the system maintenance time, improve production, reduce operating costs.

2. Control the centrifugal fan motor starting current.Conventional centrifugal fan will produce 7-8 times current of motor at the start,then generate heat, and reduce the service life; while variable frequency motor can reduce the maintenance cost, and increase service life.

3. Reduce the electric power line voltage fluctuation.Conventional motor startup will cause current surge, and voltage fluctuations, all that leads to voltage sensitive equipment failure or abnormal work; variable frequency motor because can start step by step from zero frequency zero voltage,and avoid failure.

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4. Adjust centrifugal fan air volume smoothly; and make industrial fans and blowers work in the best working point; blower performance curve conforms to the system; improve the centrifugal fan efficiency; avoiding surge; stabilize the furnace pressure; meet the requirements of the work environment.

5. Low speed operation can reduce centrifugal fan blade wear, reduce noise, prolong the life of the industrial blowers and motors.

6. Good energy saving effect. Due to the air flow is in direct proportion ratio to the square of rotational speed, and power consumption is in direct proportion ratio to the cube of rotational speed, the centrifugal fan with variable frequency motor is more energy efficient. 

Coupling Driving ID Fan for Cement Plant

Fan Frequency Inverter Definition And Features by Xianrun Blower

Fan Frequency Inverter Definition

Fan frequency inverter is a special inverter in motor customized for all kinds of industrial fans and blowers. Adopting frequency conversion speed controlling motor to change the centrifugal fan speed, thus changes the fan air volume to meet the production requirements, and the most energy-saving operation consumption as well as the highest comprehensive benefits.
So frequency control of motor speed is the best scheme to realize centrifugal fan stepless speed regulation, and it also can easily form closed-loop control system to realize the constant pressure or constant flow.

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Fan Frequency Inverter Features 

1. Designing for industrial fans and blowers energy-saving control;
2. Built-in PID and advanced  energy-saving software;
3. Energy-efficient, in general, power saving effect is between 20%~60%;
4. Automation control, easy management and  security protection;
5. Prolong industrial fans and blowers service life;
6. Protect grid stability, reduce wear and failure rate;
7. Realize the soft start and brake function. 

Coupling Driving ID Fan for Cement Plant

Frequency Conversion Technology in Centrifugal Fan Control System by Xianrun Blower

Frequency Conversion Technology in Centrifugal Fan Control System by Xianrun Blower

Frequency conversion technology is a kind of power electronic technology, widely applied in industrial fans and blowers control system in power plant, steel plant, cement plant and so on. Frequency converter is produced from the frequency conversion technology, it can be used in most motor. Because it can provide accurate speed control, so it can easily control the machinery rise, fall and variable speed operation.

High Temperature Industrial ID Fans for Boilers

Frequency converter is often applied for complex system, poor working conditions, high load, long running condition. And frequency converter in centrifugal fan adopts communication method, so it make configuration and system maintenance through the computer. 

New Design FD Fans for Boilers

In general, short frequency converter is composed of three winding input transformer, rectifier circuit, synthetic busbar, inverter circuit, synthetic filter circuit, control cabinet, etc. At present, the variable frequency motor has been applied in the boiler ID fan(induced draft fan) , FD fan(forced draft fan) for power saving modification.

New Design FD Fans for Boilers