What is the function of the frequency converter?
Because the function of the frequency changer is very powerful, so the application of frequency changer in the industrial field is very extensive. Jact will now briefly introduce the role of inverters.The function of the frequency converter can reduce the voltage fluctuation of the power line, because the voltage drop will cause the voltage sensitive equipment in the same power network to trip or work abnormally. After using the inverter:
1.The function of the frequency converter can be started gradually under zero frequency and zero voltage, eliminating the voltage drop to the greatest extent;
2.The function of the inverter can reduce the impact on the power grid, and will not cause the problem of excessive peak-to-valley difference.
3.The function of the inverter can control the acceleration function, so that it can accelerate smoothly according to the needs of users;
4.The function of the frequency converter is to control the running speed of the motor.
5.The function of the frequency converter is to control the stop mode of the motor and equipment to make the entire equipment and system safer, thereby increasing the service life accordingly.
6.The function of the frequency converter is to control the starting current of the motor, fully reduce the starting current, and reduce the maintenance cost of the motor;
The role of the frequency converter can also reduce the wear of mechanical transmission components, thereby reducing the purchase cost, and at the same time can improve the stability of the system.
1. Adjustable torque limit
After frequency conversion speed regulation, the corresponding torque limit can be set to protect the machine from damage, thereby ensuring the continuity of the process and the reliability of the product.
At present, the frequency conversion technology of China Jact Inverter Company not only makes the torque limit adjustable, but also enables the torque control accuracy to reach about 3% to 5%.
In the power frequency state, the motor can only be controlled by detecting the current value or thermal protection, but cannot set an accurate torque value to work like in the frequency conversion control.
2. Controlled stop mode
Like controllable acceleration, in frequency conversion speed regulation, the stop mode can be controlled, and there are different stop modes to choose from (deceleration stop, free stop, deceleration stop + DC braking), and it can also reduce the need for mechanical parts and motors. Impact. The impact of the motor makes the entire system more reliable, and the service life will increase accordingly.
3. Energy saving
The energy saving of the frequency converter is mainly reflected in the application of fans and water pumps. In order to ensure the reliability of production, various production machines have a certain margin when designing and equipping them with power drives. When the motor cannot run under full load, in addition to meeting the power drive requirements, the excess torque will also increase the consumption of active power and cause electrical energy waste.
The traditional speed adjustment method for fans, pumps and other equipment is to adjust the air supply and water supply by adjusting the inlet or outlet baffle and valve opening.
The input power is very large, and a lot of energy is consumed during the closing process of the baffle and the valve. When using a frequency converter, if the flow demand is reduced, the speed of the pump or fan can be reduced to meet the demand.
The inverters developed and produced by Jact inverter suppliers are more energy-efficient, and special inverters can be developed for the industry.