公开(公告)号：US20240275244A1

公开(公告)日：2024-08-15

申请号：US18168949

申请日：2023-02-14

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Nasser Monif Alotaibi ,  Ali Ahmed Alameer

IPC: H02K11/25 ,  H02K1/16 ,  H02K3/28 ,  H02K3/30 ,  H02K3/34

CPC classification number: H02K11/25 ,  H02K1/16 ,  H02K3/28 ,  H02K3/30 ,  H02K3/345

Abstract: A system includes an electric motor. The electric motor includes one or more windings wrapped around a magnetic core within one or more stator slots of the electric motor, where each of the one or more windings comprises two or more coils. The system further includes a groundwall insulation layer wrapped around the one two or more coils, and a sensor coupled to the one or more windings, where the sensor is a resistance temperature detector (RTD) configured to measure a temperature of the one or more windings at a 70% loading condition of the electric motor. The system also includes a controller connected to the sensor and a computer processor coupled to the controller.

公开(公告)号：US20240385135A1

公开(公告)日：2024-11-21

申请号：US18318314

申请日：2023-05-16

Applicant: Saudi Arabian Oil Company

Inventor： Nasser Monif Alotaibi ,  Ali Ahmed Alameer ,  Zeyad Tariq Balkhyour

IPC: G01N25/56 ,  H02H1/00 ,  H02H7/08

Abstract: A method for estimating relative humidity inside an electrical machine includes determining a measured rate of change (ROC) of temperature inside an electrical machine. A ratio of the measured ROC to a reference ROC is calculated, where the ratio is equal to an average specific heat of the electrical machine. The average specific heat of the electrical machine and an air temperature value are then compared to known specific heat values of dry air and water corresponding to a known relative humidity values for a range of air temperatures. A relative humidity value inside the electrical machine is estimated based on the comparison.