A new approach to PM machine fault diagnostics using two magnetically-coupled search-coilsA new approach to PM machine fault diagnostics using two magnetically-coupled search-coils Πλήρης Δημοσίευση σε Συνέδριο Conference Full Paper 2024-09-262022enThis paper presents a new search-coil scheme which makes it feasible to detect all faults in Permanent-Magnet Machines. The idea is based on two search-coils, one placed in the rotor and one in the stator, which couple magnetically under faulty conditions. The shape of the waveform is associated with the type of fault and the amplitude of the monitored sensor, with the severity of the fault. The studied faults are, the demagnetization, inter-turn, angular and axis misalignment faults. The proposed scheme is applicable to both type of machines, radial- and axial-flux. 2-D FEA results for the radial-flux machine and 3-D FEA results for the axial-flux show that the proposed method is promising for facilitating an experimental layout for condition monitoring applications.http://creativecommons.org/licenses/by/4.0/1616-16212022 International Conference on Electrical MachinesProceedings of the 2022 International Conference on Electrical Machines Skarmoutsos Giorgos Gyftakis Konstantinos Γυφτακης Κωνσταντινος Mueller Markus Institute of Electrical and Electronics Engineers Axial-flux Diagnostics Demagnetization Eccentricity Finite-Element-Analysis (FEA) Misalignment Radial-flux Search-coils Permanent-Magnet (PM)