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As the original manufacturer of frequency converters, we are keenly aware of the importance and application value of frequency conversion technology in modern industry. Frequency converters not only enhance production efficiency and product quality but also significantly reduce energy consumption and operational costs. Below are the top ten benefits of using our high-quality frequency converters:
1. Adjustable Torque Limits
With frequency conversion speed control, it’s possible to set specific torque limits to protect machinery from damage, thereby ensuring the continuity of the production process and the reliability of the product. Current frequency conversion technology allows not only for adjustable torque limits but also for torque control accuracy of around 3% to 5%. In contrast, under power frequency conditions, motors can only be controlled by detecting current values or thermal protection, without the ability to set precise torque values as can be done with frequency control.
2. Controlled Stopping Methods
Just like controllable acceleration, in frequency conversion speed control, the stopping method can be controlled, with different stopping methods to choose from (deceleration stop, free stop, deceleration stop + DC braking). This can also reduce the impact on mechanical parts and the motor, thus making the entire system more reliable and extending its lifespan.
3. Energy Saving
The use of frequency converters for centrifugal fans or pumps can significantly reduce energy consumption, as has been demonstrated through decades of engineering experience. Since energy consumption is cubic to the motor’s speed, the return on investment with frequency conversion is much quicker.
4. Reversible Operation Control
In frequency converter control, reversible operation control can be achieved without additional reversible control devices, simply by changing the phase sequence of the output voltage. This can reduce maintenance costs and save installation space.
5. Reduction of Mechanical Transmission Components
With current vector control frequency converters plus synchronous motors, high-efficiency torque output can be achieved, saving mechanical transmission components like gearboxes and constituting a direct frequency conversion transmission system. This can reduce costs and space, and improve stability.
6. Lower Power Requirement at Startup
Motor power is proportional to the product of current and voltage, so motors started directly under power frequency consume much more power than those started with frequency conversion. In some cases, the power distribution system is already at its limit, and the surge from direct power frequency starting can severely affect other users on the same network, leading to warnings or even fines from the electricity operator. Using a frequency converter for motor start/stop avoids such issues.
7. Controllable Acceleration Function
Frequency conversion speed control can start from zero speed and accelerate uniformly according to the user’s needs, with the acceleration curve selectable (linear acceleration, S-curve acceleration, or automatic acceleration). Starting under power frequency can cause severe vibration to the motor or the mechanical parts connected to the shaft or gears. This vibration can further increase mechanical wear and tear, reducing the lifespan of mechanical components and the motor. Moreover, frequency conversion starting can be applied in scenarios like filling lines to prevent bottles from tipping over or damage.
8. Adjustable Operating Speed
Using frequency conversion speed control can optimize the production process and quickly adapt to changes in the process. Speed changes can also be achieved via remote PLC or other controllers.
9. Control of Motor Starting Current
When a motor is started directly under power frequency, it can produce 7 to 8 times the motor’s rated current. This value significantly increases electrical stress on the motor windings and generates heat, thereby reducing the lifespan of the motor. In contrast, frequency conversion speed control can start at zero speed and zero voltage (with appropriate torque boost if needed). Once the frequency and voltage relationship is established, the frequency converter can drive the load using V/F or vector control methods. Using frequency conversion speed control can significantly reduce starting current, improving winding endurance. The direct benefit to the user is further reduced maintenance costs and an extended lifespan for the motor.
10. Reduction in Power Line Voltage Fluctuations
When a motor is started under power frequency, the surge in current causes significant voltage fluctuations, with the extent of voltage drop depending on the power of the starting motor and the capacity of the distribution network. The voltage drop can cause voltage-sensitive devices on the same power network to malfunction or operate abnormally, such as PCs, sensors, proximity switches, and contactors. Using frequency conversion speed control, as it allows for gradual startup at zero frequency and zero voltage, can significantly mitigate voltage drops.
As the original manufacturers of frequency converters, we are committed to providing you with efficient and reliable solutions, helping your business achieve higher production efficiency and economic benefits. By adopting our frequency converter technology, your enterprise can benefit in many aspects, from enhancing production efficiency to saving energy costs. We are your trustworthy partner.
