Application Of VFD In The water pump frequency converter

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APPLICATION OF VFD line

The water pump frequency converter

The water pump frequency converter is an energy-saving water supply device that controls the speed of the water pump motor by adjusting the power supply frequency. It is widely used in domestic water supply, industrial constant pressure water supply, central air conditioning systems, and farmland irrigation, among other fields. Its core function is to precisely regulate the flow and pressure of the water pump by changing the motor speed, thus forming a closed-loop control system.

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VFD Technology Principle

This equipment is composed of a frequency converter, a water pump motor, a PID controller and a pressure sensor. The built-in PID regulation function can adjust the frequency in real time to maintain a constant pressure in the pipeline network. Its energy-saving principle is based on the cube proportional relationship between the shaft power of the water pump and its rotational speed. By reducing the power supply frequency, it significantly reduces energy consumption, and the measured power-saving rate reaches 20% to 60%. It is equipped with a soft start-stop function to eliminate the water hammer effect and extend the service life of the equipment. At the same time, it supports time-segmented pressure timing control and unattended operation mode, and integrates automated management and multiple safety protection mechanisms.

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VFD CHARACTERISTIC line

Advantages After Using VFDs In Double Twist Frame

The adoption of variable frequency drive (VFD) technology focuses on the convenience of achieving stepless speed regulation for ordinary three-phase asynchronous motors, while optimizing the motor power factor. With the change in speed, the operating current also changes, achieving energy-saving purposes.
After VFD retrofitting, the main advantages of the double twist frame are mainly reflected in the following aspects:

Excellent energy-saving effect:

Under VFD drive, as the motor power factor improves, the operating current decreases, thereby reducing equipment power consumption and saving operating costs.

Low starting current:

Reduces the capacity requirements of power supply equipment.

Convenient modification of process parameters:

When twisting different yarns, there is no need to replace the belt pulley. Instead, the speed can be directly adjusted through the VFD control panel to achieve stepless speed regulation, meet production process requirements, and improve yarn quality. The operation is convenient and quick, and can be completed by ordinary workers.

Smooth start:

By applying AC variable frequency technology, smooth starting can be achieved, and the equipment's startup acceleration time can be manually set, effectively eliminating the impact force during mechanical startup and extending the equipment's service life.

Motor protection function:

Reduces motor maintenance costs. The use of VFD control simplifies the control of electrical circuits. At the same time, VFD drives are designed with rich motor protection functions, effectively preventing motor burnout in cases of overcurrent, overload, and stall.

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