Electrical engineering

Physics

Geology

Control engineering

Current (fluid)

Nonlinear system

Algorithm

Harmonic

Engineering

Harmonic analysis

Magnet

Voltage

Actuator

Fault detection and isolation

Artificial intelligence

Magnetic reluctance

Seismology

Fault (geology)

Acoustics

Control (management)

Electronic engineering

Observer (physics)

Computer science

Quantum mechanics

State observer

Control theory (sociology)

State (computer science)

Short circuit

IEEE Transactions on Industrial Electronics

Interturn short-circuit faults are one of the most (if not the most) harmful electrical machine failures, that if not detected and mitigated at a very incipient stage of development may involve serious consequences, both in terms of repair costs and safety. This article proposes a novel interturn fault diagnostic technique for synchronous reluctance machines based on the Luenberger state observer and current's second-order harmonic. The superiority of the proposed approach over the conventional model-based techniques is the ability to evaluate the severity of the fault as well as the efficiency in detecting faults in early stages and under various operating conditions. The effectiveness of the proposed method is demonstrated and validated through several experimental tests.

Inter-Turn Short-Circuit Faults Diagnosis in Synchronous Reluctance Machines, Using the Luenberger State Observer and Current's Second-Order Harmonic