Performance evaluation of decoupled control of rotor torque and rotor electric power in a salient pole synchronous machine

M. I. Masoud, J. E. Fletcher, B. W. Williams

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents the performance of a closed loop current control drive system which provides independent control of rotor torque and rotor current in a salient-pole synchronous machine. The machine is modeled using a d-q equivalent circuit in the rotor reference frame. The analysis shows that if the rotor current and its derivative are continuous functions, it is possible to derive equations for both the d and q axis stator currents that control the electric power transferred to a resistive load mounted on the rotor and independently control the rotor torque. The drive system is affected by factors included in the derived d-q axis stator currents. The effect of these factors, namely, d-q axis inductance, command rotor current, and flux perturbation frequency is investigated using both simulation and experimentation. Further, the effect of increasing interpolar cut-out on both rotor torque and rotor electric power is investigated. The technique eliminates the need for slip rings. The machine would find such uses as in rotational antenna and turret systems, or other situations where power is required for an electric load mounted on a rotating assembly.

Original languageEnglish
Title of host publicationIEE Conference Publication
Pages691-696
Number of pages6
Volume2
Publication statusPublished - 2004
EventSecond International Conference on Power Electronics, Machines and Drives, PEMD 2004 - Edinburgh, United Kingdom
Duration: Mar 31 2004Apr 2 2004

Other

OtherSecond International Conference on Power Electronics, Machines and Drives, PEMD 2004
CountryUnited Kingdom
CityEdinburgh
Period3/31/044/2/04

Fingerprint

Poles
Torque
Rotors
Electric current control
Stators
Electric loads
Equivalent circuits
Inductance
Antennas
Fluxes
Derivatives

Keywords

  • Contactless power transmission
  • Rotational transformer
  • Synchronous machine

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Masoud, M. I., Fletcher, J. E., & Williams, B. W. (2004). Performance evaluation of decoupled control of rotor torque and rotor electric power in a salient pole synchronous machine. In IEE Conference Publication (Vol. 2, pp. 691-696)

Performance evaluation of decoupled control of rotor torque and rotor electric power in a salient pole synchronous machine. / Masoud, M. I.; Fletcher, J. E.; Williams, B. W.

IEE Conference Publication. Vol. 2 2004. p. 691-696.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Masoud, MI, Fletcher, JE & Williams, BW 2004, Performance evaluation of decoupled control of rotor torque and rotor electric power in a salient pole synchronous machine. in IEE Conference Publication. vol. 2, pp. 691-696, Second International Conference on Power Electronics, Machines and Drives, PEMD 2004, Edinburgh, United Kingdom, 3/31/04.
Masoud, M. I. ; Fletcher, J. E. ; Williams, B. W. / Performance evaluation of decoupled control of rotor torque and rotor electric power in a salient pole synchronous machine. IEE Conference Publication. Vol. 2 2004. pp. 691-696
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N2 - This paper presents the performance of a closed loop current control drive system which provides independent control of rotor torque and rotor current in a salient-pole synchronous machine. The machine is modeled using a d-q equivalent circuit in the rotor reference frame. The analysis shows that if the rotor current and its derivative are continuous functions, it is possible to derive equations for both the d and q axis stator currents that control the electric power transferred to a resistive load mounted on the rotor and independently control the rotor torque. The drive system is affected by factors included in the derived d-q axis stator currents. The effect of these factors, namely, d-q axis inductance, command rotor current, and flux perturbation frequency is investigated using both simulation and experimentation. Further, the effect of increasing interpolar cut-out on both rotor torque and rotor electric power is investigated. The technique eliminates the need for slip rings. The machine would find such uses as in rotational antenna and turret systems, or other situations where power is required for an electric load mounted on a rotating assembly.

AB - This paper presents the performance of a closed loop current control drive system which provides independent control of rotor torque and rotor current in a salient-pole synchronous machine. The machine is modeled using a d-q equivalent circuit in the rotor reference frame. The analysis shows that if the rotor current and its derivative are continuous functions, it is possible to derive equations for both the d and q axis stator currents that control the electric power transferred to a resistive load mounted on the rotor and independently control the rotor torque. The drive system is affected by factors included in the derived d-q axis stator currents. The effect of these factors, namely, d-q axis inductance, command rotor current, and flux perturbation frequency is investigated using both simulation and experimentation. Further, the effect of increasing interpolar cut-out on both rotor torque and rotor electric power is investigated. The technique eliminates the need for slip rings. The machine would find such uses as in rotational antenna and turret systems, or other situations where power is required for an electric load mounted on a rotating assembly.

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