Variable frequency air compressors are designed for energy saving, and generally include permanent magnet variable frequency and ordinary variable frequency. In the world of variable frequency air compressors, permanent magnet variable frequency air compressors are the most energy-saving. Of course, energy saving is only relative, and its purpose is to save money. Then the "energy saving" meaning of permanent magnet variable frequency air compressors is no longer single, and it even includes the cost of later maintenance and repair. So now I will talk to you about how permanent magnet variable frequency air compressors save energy?
1. Energy saving effect of permanent magnet variable frequency air compressors
The advantage of permanent magnet variable frequency air compressors is energy saving, which can generally save 10%~35%. The amount of energy saving depends on the working conditions of the air compressor and the setting of the inverter parameters. The biggest factor is the working conditions of the air compressor. When the customer's gas usage fluctuates greatly, the energy saving effect is better. The direct data is the proportion of no-load time to the total working time. Therefore, in the process of selling the inverter control cabinet, we must first understand the customer's working conditions and obtain the following data:
Machine model; working mode is ON/OFF control or MOD control; loading working time and total working time;
Air compressor daily working hours and working days per week, how many hours a year; pressure band setting; if there is an energy meter, write down the degree of electricity used. What is the local electricity cost per kilowatt-hour.
Knowing the above various situations, you can calculate how much money can be saved in a year if an energy-saving controller is installed. Of course, this energy-saving analysis is very complicated, and there is a special software TOOLBOOKS to calculate how much electricity can be saved under specific working conditions.
2. The maintenance cost of permanent magnet variable frequency air compressor is reduced
Due to the use of energy-saving control system, the software startup of the air compressor reduces the electrical shock to the motor electrical components, and the starting current is small, which prolongs the life of the motor contactor. The software startup of the air compressor reduces the mechanical shock to the equipment, and the motor bearings, main engine bearings and gearboxes all extend their service life. The energy-saving controller control device makes the air compressor in a loading state most of the time. All kinds of related solenoid valves and pneumatic components have greatly reduced the number of actions, so the failure rate of both electrical and mechanical parts has been greatly reduced. The cost and labor cost of replacing parts are saved.
In addition, the frequency converter control device makes the air compressor in a loading state most of the time. The air inlet filter is always in a forward filtering state. When unloading, the air filter is in a reverse filtering state. The use of the frequency converter greatly reduces the reverse filtering time of the inlet filter and extends the service life of the filter element.
3. The permanent magnet variable frequency air compressor reduces the capacity of the factory's power grid
When the air compressor is started, the starting current is still relatively large. When the factory power grid capacity is limited, it will cause the upstream air switch to trip. The use of the frequency converter can save the cost of expanding the factory power grid.
4. Permanent magnet variable frequency air compressor reduces production losses
The permanent magnet variable frequency air compressor uses a frequency converter to monitor more than 20 parameters at the same time, including current, voltage, speed, torque, and power consumption. The system is highly intelligent. Make the air system more stable and reliable, reduce downtime, and reduce production losses.
5. Permanent magnet variable frequency air compressor can reduce noise
When the exhaust volume is reduced, the motor speed slows down, and the noise of the air compressor is much smaller than when running at full speed. The time of unloading operation is reduced, and the noise of venting is also reduced.