| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a winding diagnosis system for an electrical appliance for diagnosing whether winding is normal or abnormal. <P>SOLUTION: When an impulse voltage is applied from an impulse generation circuit 3 to learning winding 2B having the same property as diagnosis target winding, a source voltage signal generated in both ends of the learning winding 2B is passed through a noise cancellation filter 9 to obtain a voltage signal from which a high frequency component is removed. On the basis of the voltage signal, a feature amount of a circuit comprised of the learning winding 2B and the impulse generation circuit 3 is arithmetically operated and stored in storage means 7. When an impulse voltage is applied from the impulse generation circuit 3 to diagnosis target winding 2A, a source voltage signal generated in both ends of the diagnosis target winding 2A is passed through the noise cancellation filter 9 to obtain a voltage signal from which a high frequency component is removed. On the basis of the voltage signal, a feature amount of a circuit comprised of the diagnosis target winding 2A and the impulse generation circuit 3 is arithmetically operated and on the basis of the feature amount of the diagnosis target winding 2A and the feature amount stored in the storage means 7, it is diagnosed whether the diagnosis target winding 2A is normal or abnormal. <P>COPYRIGHT: (C)2012,JPO&INPIT |
