Rotating Electrical Machine and Manufacturing Method Therefor

A high-output, high-efficiency and high-quality rotating electrical machine is provided which has a stator shaped to avoid interference between coil end portions even in cases where the coil space factor of stator coils is raised and the stator coils are formed by winding continuous wires, each having a rectangular cross-section, for high productivity. The stator coils include coils of plural turns straddling plural slots with the coils thus wound interconnected, to be continuous, with connectors. The stator has a stator core mounted, around an entire periphery thereof, with plural stator coils. The coil-end apex portions, disposed on both axial end sides of the stator core, are each approximately Z-shaped without any twisted portion. Each coil-end apex portion is divided into levels of different heights from the stator core end face in the axial direction. In this way, the thickness of overlapping coil layers is reduced to avoid interference between coil end portions. With the stator coils thus formed by winding wires each having a rectangular cross-section, the coil space factor in slots has been raised.