A direct torque controller for limited speed range applications of brushless doubly-fed reluctance motors

Jovanovic, Milutin, Yu, Jian and Levi, Emil (2004) A direct torque controller for limited speed range applications of brushless doubly-fed reluctance motors. In: IAS 2004 - 39th IEEE Industry Applications Conference, 3rd - 7th October 2004, Seattle, US.

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Abstract

The paper proposes a direct torque control (DTC) algorithm suitable for low variable frequency operation of the BDFRM and considers aspects of its practical implementation. The simulation and experimental results generated for a small prototype will show that the machine can successfully operate down to zero supply frequency of the inverter-fed (secondary) winding, unlike cage induction or many other traditional AC machines with DTC. This undoubt advantage of the BDFRM is a consequence of using a flux estimation technique not relying on the secondary voltage integration and therefore avoiding the well-known problems at low secondary frequencies, typical for the BDFRM normal operation. The developed algorithm also offers the prospect of the machine performance being optimised in a manner similar to conventional vector controllers but with control actions executed in a stationary reference frame as usual for all the DTC methods. The maximum torque per inverter ampere (MTPIA) control strategy has been selected as a case study.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	brushless machines, invertors, machine vector control, magnetic flux, optimisation, reluctance motors, torque control
Subjects:	H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Becky Skoyles
Date Deposited:	04 Feb 2015 12:10
Last Modified:	12 Oct 2019 19:06
URI:	http://nrl.northumbria.ac.uk/id/eprint/19640

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