JPWO2022153821A5 - - Google Patents

Claims (16)

An electrode impregnated with a conductive liquid and formed so that the conductive liquid contacts the periphery of an insulating layer of a magnet wire; and a partial discharge detection device connected in parallel to the electrode, wherein the electrode applies an AC voltage between the magnet wire and the conductive liquid, and measures the amount of partial discharge generated between the magnet wire and the conductive liquid using the partial discharge detector. A defect detection device characterized by detecting a defect in the insulating coating of the magnet wire by: An electrode impregnated with a conductive liquid and formed so that the conductive liquid contacts the periphery of an insulating layer of a magnet wire; and a partial discharge detection device connected in parallel to the electrode. is applied between the magnet wire and the electrode, and the magnet wire is measured by measuring the amount of partial discharge generated between the magnet wire and the conductive liquid using the partial discharge detection device. A defect detection device characterized by detecting defects in the insulating coating of the. 3. The defect detection apparatus according to claim 1, wherein the electrode is formed so that the conductive liquid is in contact with the entire circumference of the insulating layer of the traveling magnet wire. 4. The defect detection apparatus according to claim 1, wherein said electrode is a wet electrode made of a soft and hygroscopic material. 5. The defect detection device according to claim 4, wherein the electrode is in contact with the liquid surface of the conductive liquid in the conductive liquid tank. 6. A defect detection apparatus according to claim 5, wherein said conductive liquid tank is provided with a liquid supply mechanism comprising a liquid level switch, a liquid supply tank for said conductive liquid, and a valve. 7. The defect detection device according to claim 1, wherein the electrodes are two rectangular parallelepiped wet electrodes arranged so as to sandwich the magnet wire. 7. The electrode according to any one of claims 1 to 6, wherein the electrode has a U shape, and a bent portion for forming the U shape is formed so as to be in contact with the circumference of the magnet wire. defect detection equipment. 7. The defect detection device according to claim 1, wherein the electrode is formed so as to spirally wind around the magnet wire. 9. The defect detection apparatus according to claim 1, further comprising a clamp that clamps the electrode from the outer surface. A coil winding device for winding a magnet wire as a motor coil; A defect detection device for detecting defects in the magnet wire before the wire is wound. A coil winding device for winding a magnet wire into a motor coil, a winding device comprising a defect detection device according to any one of claims 1 to 10, the winding being connected to a rotating power behind the electrodes in the defect detection device. A defect detection device with a bobbin. A coil winding device for winding a magnet wire around a motor coil, and a defect detection device according to any one of claims 1 to 10, wherein the magnet is provided between the electrode in the defect detection device and the motor coil Disposing an encoder for detecting the speed of the wire, and calculating the position of the defect of the magnet wire wound around the motor coil based on the output of the encoder and the defect detection signal output by the defect detection device. A defect detection system characterized by: A coil winding device for winding a magnet wire around a motor coil, a defect detection device according to any one of claims 1 to 10, and between an electrode in the defect detection device and the motor coil, the magnet Using an encoder that detects the speed of the wire, the distance at the start of winding of the motor coil is set to zero, and based on the winding distance until defect detection and the winding distance after defect detection, the defect of the motor coil A defect detection method characterized by calculating the position of A rotating electric machine is manufactured using the motor coil for which defect detection has been performed using a coil winding device for winding a magnet wire around the motor coil and the defect detection device according to any one of claims 1 to 10. A method for manufacturing a rotating electrical machine that An electrode formed around an insulator layer of a magnet wire and a partial discharge detector connected in parallel to the electrode, wherein an AC voltage is applied between the magnet wire and the electrode to detect the partial discharge. A defect detection device that detects defects in the insulation coating of the magnet wire by measuring the discharge charge amount of partial discharge generated between the magnet wire and the electrode using a detection device;
a coil winding device for winding the magnet wire around a motor coil;
An encoder for detecting the speed of the magnet wire is arranged between the electrode in the defect detection device and the motor coil, and based on the output of the encoder and the defect detection signal output by the defect detection device and calculating a position of a defect in said magnet wire wound around said motor coil.