Abstract: A permanent magnet generator experimental device for simulating electromechanical cross and complex faults is disclosed. The device includes a base, a DC drive motor, a permanent magnet simulation generator, bearing seats, a stator short circuit wiring board and time relays. A certain degree of radial air-gap eccentricity is set by moving a stator and a stator winding, and then a stator short circuit is set by controlling time relays; or a certain degree of axial air-gap eccentricity is set by moving a stator and a stator winding, and then a stator short circuit is set by controlling time relays. According to the above settings, different degrees of electromechanical cross and complex faults are simulated as required.