http://iet.metastore.ingenta.com
1887

Sensorless control of IM drives

Sensorless control of IM drives

For access to this article, please select a purchase option:

Buy chapter PDF
$16.00
(plus tax if applicable)
Buy Knowledge Pack
10 chapters for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
Modeling, Simulation and Control of Electrical Drives — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

This chapter addresses the fundamental issues of sensorless vector control of induction motor drives. Starting from an historical overview of induction motor control in general, we revisit the two archetypical flux estimators known as the current model and voltage model, as well as their combination into a reduced-order observer. It is demonstrated not only that how speed estimation can be added to the observer but also how the flux estimator can be made inherently sensorless, i.e. the rotor speed no longer appears in the estimator equations. It is shown that all inherently sensorless flux estimators that are based on the reduced-order observer resemble a variant of the voltage model, called the statically compensated voltage model. Finally, theory is developed whereby the coefficients of the inherently sensorless flux estimator can be selected so that stability is obtained for all operating conditions, called complete stability. This includes the low-speed regeneration region where often instability phenomena tend to occur.

Chapter Contents:

  • 13.1 Introduction
  • 13.2 Essentials of sensorless vector control
  • 13.2.1 IM model and nomenclature
  • 13.2.2 Dynamic model and principle for vector control
  • 13.3 Flux estimation in DFO
  • 13.3.1 Current model
  • 13.3.2 Voltage model
  • 13.3.3 Statically compensated VM
  • 13.3.4 Combination of CM and VM
  • 13.3.5 Reduced-order observer
  • 13.3.6 Speed estimation
  • 13.4 Flux estimation in IFO
  • 13.4.1 Current model
  • 13.4.2 Reduced-order observer
  • 13.4.3 Voltage model
  • 13.4.4 Statically compensated VM
  • 13.4.5 Speed estimation
  • 13.4.6 Inherently sensorless reduced-order observer
  • 13.4.6.1 Inherently sensorless reduced-order observer recast as SCVM
  • 13.4.6.2 Inherently sensorless CM
  • 13.4.7 Speed estimation in an inherently sensorless scheme
  • 13.5 Design for complete stability
  • 13.6 Examples
  • 13.6.1 Inherently sensorless reduced-order observer and SCVM
  • 13.6.2 Sensorless CM
  • 13.6.2.1 Inherently sensorless CM
  • 13.6.3 Simulations
  • 13.7 Conclusion
  • List of symbols
  • Glossary of terms
  • References

Inspec keywords: induction motor drives; sensorless machine control; stability; reduced order systems; observers

Other keywords: instability phenomena; statically compensated voltage model; reduced-order observer; archetypical flux estimators; estimator equations; induction motor drives; sensorless vector control; induction motor control; speed estimation; current model; rotor speed; low-speed regeneration region; IM drives

Subjects: Asynchronous machines; Simulation, modelling and identification; Control of electric power systems; Stability in control theory

Preview this chapter:
Zoom in
Zoomout

Sensorless control of IM drives, Page 1 of 2

| /docserver/preview/fulltext/books/ce/pbce118e/PBCE118E_ch13-1.gif /docserver/preview/fulltext/books/ce/pbce118e/PBCE118E_ch13-2.gif

Related content

content/books/10.1049/pbce118e_ch13
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address