AC motor power frequency conversion

First, AC motor power supply

AC motor generally use three-phase system, because the three-phase AC motor and single-phase motor compared to the performance indicators, raw material utilization and price, etc. have obvious advantages. The same power of the three-phase motor than the single-phase motor small size, light weight, low prices. Three-phase motor has self-starting capability. Single-phase motor has no starting torque, in order to solve the starting problem, need to take some special measures. Single-phase motor torque is pulsating, the noise is relatively large, but the required power is relatively simple, especially in the home is very convenient to use. So small home motor and instrument with more motor single-phase motor.

Second, the AC motor frequency control

Frequency converter is the application of frequency conversion technology and microelectronics technology, by changing the motor power supply frequency and amplitude of the way to control the AC motor power transmission components.

AC motor speed converter characteristics:

Low frequency torque output 180%, low frequency operation characteristics

Output frequency up to 600Hz, can control high-speed motor

A full range of detection protection (overvoltage, undervoltage, overload) instantaneous power failure restart

Acceleration, deceleration, moving in the stall prevention and other protection functions

Automatic identification of motor dynamic parameters to ensure the stability and accuracy of the system

High speed shutdown response fast

Rich and flexible input and output interfaces and control methods, versatility