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Rotating electrical machines

Rotating electrical machines

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There are currently an enormous range of VSDs being applied to electrical machines and there are a number of specialised references available for considering VSD reliability, see Appendix C -Timeline, including Yang and Ran et al. (2010) and Chung et al. (2016). A great deal of this development is being driven by the electrification of transport, on the railway and the roads. For example, Figure 2.17 shows an example of a high-performance electric car permanent magnet motor and drive. The conclusion of this chapter is that all electrical machines are remarkably similar in their logic and design, despite there being many different types and progressive changes in their application. However, they are all dominated by the coupling magnetic field, which is their modus operandi. It follows therefore that their construction, failure modes and CM must derive from that fundamental mechanism, the materials which facilitate it and their operating conditions, as the following chapter will demonstrate. We will need to show how CM can take these facts into account.

Chapter Contents:

  • 2.1 Introduction
  • 2.2 Electrical machines structures and types
  • 2.3 DC machines
  • 2.4 AC machines, synchronous
  • 2.5 AC machines, asynchronous or induction
  • 2.6 Permanent magnet or reluctance machines
  • 2.7 Other machine types
  • 2.7.1 Multi-phase machines
  • 2.7.2 Doubly fed and variable-speed drive machines
  • 2.8 Conclusions

Inspec keywords: electric vehicles; electric machines; reliability; motor drives; permanent magnet motors; variable speed drives

Other keywords: variable speed drive; rotating electrical machines; transport electrification; magnetic field coupling; roads; failure modes; high-performance electric car permanent magnet motor; railway; VSD reliability

Subjects: a.c. machines; Reliability; d.c. machines; Drives; Transportation

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