INSULATION DETERIORATION DIAGNOSIS METHOD AND INSULATION DETERIORATION DIAGNOSIS DEVICE FOR ROTARY ELECTRIC MACHINE

• Main Authors: AKIYOSHI KAZUTERU, YAMASHITA TAKAHIKO, FURUSATO TOMOHIRO, TAGAMI KENTA, IKEDA RYUJI
• Format: Patent
• Language: English; Japanese
• Published: 27.07.2022
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; METALLURGY; NON-METALLIC ELEMENTS; PHYSICS; TESTING

To improve accuracy of insulation deterioration diagnosis of a rotary electric machine.SOLUTION: An insulation deterioration diagnosis method for a rotary electric machine includes an acquisition step and a diagnostic step. The acquisition step acquires ozone concentration, temperature, humidity, and wind speed of an air flow in a housing of the rotary electric machine which comprises the housing, a stator stored in the housing, a rotator stored in the housing and rotating with respect to the stator, an insulator stored in the housing, and a fan generating an air flow in the housing. The diagnostic step diagnoses deterioration of the insulator on the basis of the ozone concentration, temperature, humidity, and wind speed.SELECTED DRAWING: Figure 4 【課題】回転電機に対する絶縁性の劣化の診断の精度の向上を図る。【解決手段】回転電機の絶縁劣化診断方法は、取得ステップと、診断ステップと、を含む。取得ステップは、筐体と、筐体に収容された固定子と、筐体に収容され固定子に対して回転する回転子と、筐体に収容された絶縁体と、筐体内に気流を発生させるファンと、を備えた回転電機における筐体内の、オゾン濃度、温度、湿度、および気流の風速を取得する。診断ステップは、オゾン濃度、温度、湿度、および風速に基づいて、絶縁体の劣化を診断する。【選択図】図４