Are there any differences in management and maintenance between 2000Kw synchronous motors and asynchronous motors?

I am not an electrical engineering professional, but my experience can serve as a reference. Synchronous motors use carbon brushes to supply power to the rotor. This carbon brush makes contact with the slip ring; if dust is present, it can lead to poor contact and an increase in resistance, and in severe cases, arcing and burning may occur. Therefore, maintenance should be carried out in a timely manner depending on the usage and environmental conditions. For reference.

There are certain structural differences between 2000KW synchronous motors and asynchronous motors. Synchronous motors include a rotating rectifier device for excitation; substations have additional excitation cabinets, which makes their structure relatively more complex. However, the amount of maintenance required for daily upkeep is not very different. When it comes to repairs, there are significant differences – a synchronous motor represents an entire system

Synchronous machines are not the same concept as asynchronous machines; they are even more difficult to manage than generators. Your colleague isn’t exaggerating at all.

So what’s the difficulty in that? Could you be more specific? For example, if I work with equipment, I can say that reciprocating compressors are more difficult to manage and maintain than screw compressors. And what exactly makes them more difficult? Reciprocating machines have a high failure rate due to their many vulnerable components; under the same operating conditions, they generally need to be repaired every six months. Many spare parts need to be replaced during each repair, but the repair process is relatively simple – workers with ordinary skills can carry out the repairs on machines that are not of extremely large size. As a result, more spare parts need to be kept on hand for maintenance purposes. The failure rate of screw compressors is very low; with proper use, they can remain unrepaired for several years. However, major repairs require high technical skills and involve mechanics with specialized expertise. From a management and maintenance perspective, screw compressors are certainly preferred, but under the same process conditions, screw compressors are roughly two to three times more expensive than reciprocating compressors.

The maintenance of synchronous motors requires care not only for the motor itself but also for the excitation system. The structure of the motor’s body is different from that of a conventional asynchronous motor. The excitation system is a device associated with synchronous motors, and it plays a key role in the operation of these motors.

Fully agree! A synchronous motor is a system that includes not only the motor on-site but also the excitation cabinet in the switchgear room.