Function of water pump frequency converter

Pump inverter is to change the frequency and amplitude of the motor power supply to control the power transmission components of AC motor. The function of pump inverter is to improve the starting mode of three-phase AC motor and achieve the purpose of smooth control of pump motor speed.

Characteristics of water pump inverter

Design of constant pressure energy saving control for water pump

Built in PID and advanced energy saving software

It can realize multi-point pressure timing function of one support and one time division

High efficiency and energy saving, 20% ~ 60% power saving effect (depending on actual working conditions)

Simple management, safety protection and automatic control

Extend equipment life, protect power grid stability, reduce wear and reduce failure rate

Realize soft start and brake function

Working principle of water pump inverter

The pump inverter can also control the speed of single-phase asynchronous motor. The pump inverter can receive the two-phase current generated by the capacitor before.

Pump inverter is usually composed of rectifier unit which converts alternating current into direct current and feeds DC intermediate circuit or DC voltage intermediate circuit, and inverter which feeds by intermediate circuit. The inverter can output the stop chord voltage of the desired frequency and interval. When driving the three-phase AC motor of frequency converter, it can provide stepless acceleration from zero to rated speed without torque reduction. Because the pump inverter will produce strong electrical interference signal on the motor power line, it is usually necessary to shield the pump inverter. In addition, a sine wave filter can be installed between the pump frequency converter and the pipeline booster pump motor to convert the PEM wave from the frequency conversion output into a sine wave.

Editor in charge: yyx

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