Discussion on the grounding issues of synchronous motors
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I would like to ask all experts: what aspects should be taken into account regarding grounding during the mechanical and electrical installation of synchronous motors? What are the common grounding faults? How to solve it?
Synchronous motors generally have relatively high power levels. When grounded, special attention should be paid to the location of the grounding, as well as to the shaft current in the motor. An imbalance in the shaft current can cause damage to the mechanical components or the bearing shells.
Reply to 2# hgchgc: When using Simadynd to tune the synchronous motor, at an open-loop speed of 5 r/min, there are glitches in the speed feedback, and the values are irregular. The same problem occurs at low speeds in closed-loop mode, but it does not appear at high speeds in closed-loop mode. Is it a grounding issue or some other cause? I seek advice from those with more experience