Water System Solutions Inverter

Here is an introduction to the frequency converters in the water affairs system:

Working Principle
A frequency converter is a device that uses the switching action of power semiconductor devices to convert the power frequency power supply into electrical energy with another frequency for control. In the water affairs system, it usually converts the power frequency of 50Hz or 60Hz of the utility power into an adjustable frequency, thereby changing the rotational speed of the motor. Its core components include rectifiers, filters, and inverters, etc. The rectifier converts alternating current into direct current, the filter smoothes the direct current, and the inverter then converts the direct current into alternating current with adjustable frequency and voltage, which is supplied to the motor. By changing the output frequency, precise control of the motor's rotational speed is achieved, and thus the requirements for flow rate, pressure, etc. under different working conditions in the water affairs system are met.

Main Functions
Energy Saving: In the water affairs system, the load of equipment such as water pumps and fans often changes over time. By adjusting the rotational speed of the motor through the frequency converter, the equipment can reduce its rotational speed under low load conditions, reducing energy consumption. According to statistics, using frequency converter speed regulation can save 20% - 50% of energy for equipment such as water pumps.

Soft Start and Protection: The frequency converter can achieve the soft start of the motor, avoiding the large current impact during startup and prolonging the service life of the motor and related equipment. At the same time, it also has a variety of protection functions such as overcurrent, overvoltage, overheating, and undervoltage, improving the reliability and stability of the system.

Precise Control: It can accurately control the rotational speed of the motor according to the actual needs of the water affairs system, thus achieving precise adjustment of parameters such as water flow rate and pressure. For example, in the water supply system, the rotational speed of the water pump can be adjusted in real-time according to the peak and valley changes of user water consumption to ensure the stability of the water supply pressure.

Application Scenarios
Water Supply System: It is widely used in equipment such as water intake pumps, water delivery pumps in water treatment plants, and booster pumps in secondary water supply systems. By adjusting the rotational speed of the water pump through the frequency converter, the water supply flow rate and pressure can be automatically adjusted according to the change of water consumption, ensuring the water supply quality and reducing energy consumption at the same time.

Sewage Treatment System: It is used for equipment such as aeration blowers, sewage lift pumps, and sludge return pumps in sewage treatment plants. For example, the aeration blower can adjust the air supply volume in real-time according to the oxygen demand of microorganisms in the sewage through the frequency converter speed regulation, improving the sewage treatment efficiency and reducing energy consumption; the sewage lift pump adjusts the rotational speed according to the change of the sewage flow rate to achieve energy-saving operation.