What should be the maximum width of the edge conductors used in the large alternators?

To ensure effective operation and long life, the edge conductors used in large alternators should have a maximum width that minimizes the risk of high eddy current losses and mechanical stresses due to electromagnetic forces. Typically, edge conductors are designed to be as narrow as possible within manufacturing and mechanical limits to reduce these unwanted effects.

For large alternators, the maximum width of edge conductors can vary based on specific design parameters, including the machine’s size, its rated voltage and current, the material of the conductors, and cooling methods employed. As a general rule, to mitigate eddy current losses and ensure manageable stress levels under operational electromagnetic forces, the width is often kept within the range of a few millimeters up to around 10 mm for high power applications. It’s crucial to employ proper design practices, including the use of transposition within the conductors to equalize current distribution and minimize eddy current losses in large machines.

For a precise value tailored to a specific alternator design, consulting the manufacturer’s guidelines or detailed design calculations based on the alternator’s specifications and operational requirements is necessary. This ensures that the chosen conductor dimensions will achieve an optimal balance between electrical performance, mechanical stability, and manufacturing considerations.