Peaco Support Industrial Automation

There are some difference between AC-DC-AC phase converter and frequency converter plus transformer. Technically, phase converter features AC-DC-AC circuit structure, adopts the modulation control technology of SVPWM space vector algorithm to convert ordinary single-phase electricity to industrial three-phase electricity, which some users can not apply for due to harsh site restrictions and the single phase to three phase converters are widely applicable for various loads, such as robot arms, motors, lathes, elevators, inverters, compressors, etc. However, frequency converter plus transformer is a power control device that uses both frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. The detailed difference between them is shown as following. Usage For phase converter, through converting single phase to three phase power , such as turning the single phase 220V to three-phase 380V power...

 There some difference in desigh between synchronous and asynchronous motors. 1. The biggest difference between synchronous and asynchronous motors is whether the rotor speed is consistent with the magnetic field speed of the stator. If the rotor's rotational speed is the same as that of the stator, it is called a synchronous motor. Otherwise, it is called an asynchronous motor. 2. When the number of poles is constant, there is a close connection between the motor's speed and frequency, namely, it is synchronous connection. Asynchronous motors are also called induction motors, whose rotor speed during operation is always lower than that of synchronous motors. 3. The synchronization refers to that after the current flows through the electric drive (stator) windings, a rotating magnetic field will be formed in the air gap. The rotation direction and speed of the magnetic field are the same as the rotation of the rotor. Therefore, it is synchronous. As for asynchronous motors, t...