What are the causes of load and vibration when using the motor? Which is better, hydraulic coupler or permanent magnet coupler?

It may be because the motors are not good, some motors will vibrate when the load is small, or the electromagnetic interference of the inverter is too strong, resulting in unstable output. Generally, it is caused by the oscillation of frequency conversion output waveform, that is, the frequency is unstable, which belongs to the fault of frequency converter. Hydraulic couplings usually have no damping effect. When the motor vibrates with the load, it accelerates the wear of the bearing, and at the same time causes unstable power transmission, which affects the actual production output of the load. Because the permanent magnet coupling is torque transmission without mechanical connection, the vibration will not be transmitted to each other, and the vibration reduction effect is good. According to the announcement of Yaozhong Group, which obtained this patented technology, Maxwell permanent magnet coupler is very reliable in energy saving and safety performance, and can effectively reduce vibration by 70-80%.