| 摘要 |
PURPOSE:To improve the reliability of a malfunction diagnosing device by judging the discriminated result of an interlayer shortcircuit discriminator which inputs a magnetic flux detection signal as being effective with the compared result of the current value obtained from the voltage, current and power factor of a stator coil with the current value of a rotor coil. CONSTITUTION:The leakage magnetic flux in the vicinity of the surface of a rotor 3 is detected by a magnetic flux detecting element 14 installed on a rotary electric machine section 17, a processor 20 processes the pulsating magnetic flux signal, and when it judges the production of an interlayer shortcircuit, it produces a malfunction signal. A discriminator 37 obtains rotor current value corresponding to the outputs of a stator voltage detector 39, a stator current detector 40 and a power factor detector 41, and when the output signal of a rotor current detector 35 is larger than the obtained rotor current value, it applied an interlayer shortcircuit occurrence signal to a switch 33. The switch 33, when receiving the interlayer shortcircuit occurrence signal, applies a malfunction signal from the processor 20 to a monitor 22. |
