A stable-quality rotary electric machine system in which one or more rotary electric machine characteristics are normalized from various viewpoints. The rotary electric machine system is provided with: a rotary electric machine having a rotor, a stator, and a stator coil; and a controller configured to execute drive control of the rotary electric machine. The controller applies, to a drive control signal for the rotary electric machine, normalization information, which normalizes the drive control signal for the rotary electric machine, derived by comparing specific information about a value correlated to an induced voltage occurring in the stator coil when the rotor of the rotary electric machine is driven under prescribed conditions and predetermined reference information about the value correlated to the induced voltage occurring in the stator coil. Then, the drive control signal normalized by the application is used to execute the drive control of the rotary electric machine.