Voltage-source inverter-fed drives

Voltage-source inverter-fed drives

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The authors discuss condition monitoring, fault diagnosis and prognosis of electrical machines, eccentricity faults, stator inter-turn faults, broken rotor bars or end-rings, demagnetisation of permanent magnets, bearing faults, torque monitoring, magnetic flux monitoring, single-phase rotation test, thermal stress, electrical stress, mechanical stress, fault diagnostic techniques, current-based approaches, voltage-based approaches, fault-tolerant techniques, phase connection and neutral connection to capacitors midpoint, phase connection and neutral connection to an extra invertor leg, series VSI topologies.

Chapter Contents:

  • 2.1 Condition monitoring, fault diagnosis and prognosis of electrical machines
  • 2.1.1 Introduction
  • 2.1.2 Condition monitoring, fault diagnosis and prognosis
  • 2.1.3 Fault diagnosis of electrical machines
  • The eccentricity fault
  • The stator inter-turn fault
  • Broken rotor bars or end-rings
  • Demagnetisation of permanent magnets
  • Bearing faults
  • 2.1.4 Alternative diagnostic methods
  • Electromagnetic/mechanical torque monitoring
  • Magnetic flux monitoring
  • Single-phase rotation test
  • 2.1.5 Fault prognosis of electrical machines
  • Thermal stress
  • Electrical stress
  • Mechanical stress
  • Discussion
  • 2.2 Fault diagnostic techniques applied to voltage source inverter-fed drives
  • 2.2.1 Introduction
  • 2.2.2 Fault diagnostic approaches
  • Current-based approaches
  • Voltage-based approaches
  • 2.3 Fault-tolerant techniques applied to VSI-fed drives
  • 2.3.1 Introduction
  • 2.3.2 Non-redundant topologies
  • Phase connection to capacitors midpoint
  • Neutral connection to capacitors midpoint
  • 2.3.3 Redundant topologies
  • Phase connection to an extra inverter leg
  • Neutral connection to an extra inverter leg
  • Series VSI topologies
  • Acknowledgement
  • References

Inspec keywords: voltage-source convertors; condition monitoring; fault diagnosis; electric drives; fault tolerance; invertors

Other keywords: magnetic flux monitoring; voltage-source inverter-fed drives; fault-tolerant techniques; current-based approaches; condition monitoring; voltage-based approaches; bearing faults; broken rotor bars; series VSI topologies; eccentricity faults; permanent magnets; demagnetisation; neutral connection; electrical machines; fault diagnosis; fault diagnostic techniques; stator inter-turn faults; end-rings; torque monitoring; electrical stress; single-phase rotation test; fault prognosis; capacitors midpoint; extra invertor leg; thermal stress; mechanical stress; phase connection

Subjects: Power electronics, supply and supervisory circuits; Drives

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