Coil

Overview

Table 1. Definition of the hairpin coil

1	Wire width (without insulation), for rectangular shape wire
2	Wire height (without insulation), for rectangular shape wire
3	Minimum distance between wires (with or without insulation) to be considered for modeling inside the Flux® 2D environment. This parameter allows getting a better wire distribution inside the slot.

Relevance of the slot filling

When the number of wires (induced by the number of conductors per layer and the number of layers) is higher than allowed by the slot free area, the wires are grayed in the slot filling view. This is to inform the user that the number of wires must be decreased, so, with hairpin technology, the number of conductors per layer.

In that case, the design of the winding is not possible; the machine cannot be built or tested.

The Motor Factory Design environment button and winding icon in the Stator section are colored in red. This means that there exists a fault in the design, which must be corrected.

The tests cannot be performed; the tooltip message indicates that the slot filling is not valid, and the user must modify the slot filling parameters to unlock the test.

At the same time, a warning message indicates that there is not enough space for the specified number of wires. The allowed number of wires is mentioned in comparison with the targeted ones.