The sensor S detects information relating to the coil 32. The sensor S detects at least one of, for example, a temperature of the coil 32, a vibration of the coil 32, a sound generated by the coil 32, and the like. The sensor S is connected to a terminal end of a wiring portion 140. The wiring portion 140 is wired so as to straddle the outer side in the radial direction and the inner side in the radial direction on the upper surface side of the core back 31a and the stator support tube portion 43. In the wiring portion 140, the sensor S is provided at an outer terminal end in the radial direction of the core back 31a.

The wiring portion 140 is connected to a power supply unit and a signal input unit (none of which are illustrated) at an inner terminal end in the radial direction from the stator support tube portion 43. The annular protruding portion 35a of the fixing member 35 covers the wiring portion 140 from the upper surface side. The annular protruding portion 35a fixes the wiring portion 140 against the core back 31a. Since the wiring portion 140 is fixed between the fixing member 35 and the core back 31a, it is possible to suppress the occurrence of a problem such as interference of the wiring portion 140, wired so as to straddle the outer side and the inner side of the stator 30, with the rotor 13.