Common faults and solutions of permanent magnet synchronous motors

1、 Phase failure
Phase failure is one of the common faults in permanent magnet synchronous motors, which may be caused by poor contact of power lines, wiring faults in windings, or burnt windings. If there is a phase failure in the permanent magnet synchronous motor, the first thing to check is the power cord, winding, and other parts. If poor contact is found in the power cord, it is necessary to remove the connecting wire and reconnect it to ensure the quality of the connection. If the winding is burnt out, a new winding needs to be replaced. If there is a wiring fault, it is necessary to locate the fault point and repair it.

2、 Vibration malfunction
The reasons for the vibration of permanent magnet synchronous motors during use may be bearing damage, unreasonable weight distribution, bearing wear, etc. If there is a vibration fault in the permanent magnet synchronous motor, the motor housing needs to be removed first to check the condition of the bearings. If the bearings are damaged, they need to be replaced in a timely manner; When checking the counterweight, it is necessary to ensure that the counterweight block is securely fixed and not loose; If bearing wear is found, it is necessary to replace the bearing in a timely manner.

3、 Overheating fault
The reasons for overheating of permanent magnet synchronous motors during use may be excessive current, cooling device failure, unreasonable rotor stator clearance, etc. If there is an overheating fault in the permanent magnet synchronous motor, it is necessary to check whether the motor current is too high. If so, it is necessary to check the power supply and the intelligence level of the control system; Check if the cooling device is functioning properly, and replace it promptly if any cooling faults are found; If the inspection finds that the clearance between the rotor and stator is unreasonable, the clearance needs to be adjusted.

4、 Other faults
Permanent magnet synchronous motors may also experience other malfunctions during use, such as excessive noise and unstable speed. If these faults occur, it is also necessary to identify the cause of the fault and carry out timely repairs.

conclusion
Permanent magnet synchronous motor is a commonly used driving equipment, which inevitably experiences various faults such as phase failure, vibration, overheating, etc. This article lists common faults of permanent magnet synchronous motors and provides corresponding solutions to help users quickly solve problems. In the daily production process, it is necessary to regularly maintain and upkeep the equipment to reduce the probability of failures, ensure production efficiency and equipment lifespan.