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Torque analysis on a double rotor electrical variable transmission with hybrid excitation

Joachim Druant (UGent) , Hendrik Vansompel (UGent) , Frederik De Belie (UGent) , Jan Melkebeek (UGent) and Peter Sergeant (UGent)
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Organization
Abstract
An electrical variable transmission (EVT) can be used as a power splitting device in hybrid electrical vehicles. The EVT analyzed in this paper is a rotating field electrical machine having two concentric rotors. On the outer rotor, permanent magnets (PMs) are combined with a dc-field winding, being the first implementation of its kind. The magnetic field in the machine as well as the electromagnetic torque on both rotors are a function of the q- and d-axis currents of the stator and inner rotor, as well as the dc-field current. To describe and fully understand this multiple-input multiple-output machine, this paper gives an overview of the influence of the different current inputs on the flux linkage and torque on both rotors. Focus is given to the hybrid excitation in the d-axis by combining the dc-field current and the alternating currents. This has the advantage compared to other EVT topologies that unwanted stator torque can be avoided without stator d-axis current flux weakening. Results of the analysis are presented by means of the torque to current characteristics of a double rotor PM-assisted EVT, as well as the torque to current ratios. The machine characteristics are finally experimentally verified on a prototype machine.

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MLA
Druant, Joachim et al. “Torque Analysis on a Double Rotor Electrical Variable Transmission with Hybrid Excitation.” IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 64.1 (2017): 60–68. Print.
APA
Druant, J., Vansompel, H., De Belie, F., Melkebeek, J., & Sergeant, P. (2017). Torque analysis on a double rotor electrical variable transmission with hybrid excitation. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 64(1), 60–68.
Chicago author-date
Druant, Joachim, Hendrik Vansompel, Frederik De Belie, Jan Melkebeek, and Peter Sergeant. 2017. “Torque Analysis on a Double Rotor Electrical Variable Transmission with Hybrid Excitation.” Ieee Transactions on Industrial Electronics 64 (1): 60–68.
Chicago author-date (all authors)
Druant, Joachim, Hendrik Vansompel, Frederik De Belie, Jan Melkebeek, and Peter Sergeant. 2017. “Torque Analysis on a Double Rotor Electrical Variable Transmission with Hybrid Excitation.” Ieee Transactions on Industrial Electronics 64 (1): 60–68.
Vancouver
1.
Druant J, Vansompel H, De Belie F, Melkebeek J, Sergeant P. Torque analysis on a double rotor electrical variable transmission with hybrid excitation. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS. 2017;64(1):60–8.
IEEE
[1]
J. Druant, H. Vansompel, F. De Belie, J. Melkebeek, and P. Sergeant, “Torque analysis on a double rotor electrical variable transmission with hybrid excitation,” IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, vol. 64, no. 1, pp. 60–68, 2017.
@article{8158985,
  abstract     = {An electrical variable transmission (EVT) can be used as a power splitting device in hybrid electrical vehicles. The EVT analyzed in this paper is a rotating field electrical machine having two concentric rotors. On the outer rotor, permanent magnets (PMs) are combined with a dc-field winding, being the first implementation of its kind. The magnetic field in the machine as well as the electromagnetic torque on both rotors are a function of the q- and d-axis currents of the stator and inner rotor, as well as the dc-field current. To describe and fully understand this multiple-input multiple-output machine, this paper gives an overview of the influence of the different current inputs on the flux linkage and torque on both rotors. Focus is given to the hybrid excitation in the d-axis by combining the dc-field current and the alternating currents. This has the advantage compared to other EVT topologies that unwanted stator torque can be avoided without stator d-axis current flux weakening. Results of the analysis are presented by means of the torque to current characteristics of a double rotor PM-assisted EVT, as well as the torque to current ratios. The machine characteristics are finally experimentally verified on a prototype machine.},
  author       = {Druant, Joachim and Vansompel, Hendrik and De Belie, Frederik and Melkebeek, Jan and Sergeant, Peter},
  issn         = {1557-9948},
  journal      = {IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS},
  language     = {eng},
  number       = {1},
  pages        = {60--68},
  title        = {Torque analysis on a double rotor electrical variable transmission with hybrid excitation},
  url          = {http://dx.doi.org/10.1109/TIE.2016.2608768},
  volume       = {64},
  year         = {2017},
}

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