Steady‐state operation of the brushless cascaded doubly fed machine: a survey

Abstract

Purpose

The purpose of this paper is to investigate the steady‐state stability and features of the brushless cascaded doubly fed machine (BCDFM), which is made up of two wound‐rotor induction machines: the power machine (PM) and the control one, with their rotors mechanically and electrically coupled.

Design/methodology/approach

The machine modelling is first treated considering a Park reference frame linked to the rotating field of the PM. Then, a state representation related to small perturbations is established following the linearisation of the BCDFM model around a steady‐state operating point. This allows the investigation of BCDFM steady‐state stability, power flow and the torque‐speed characteristics.

Findings

It has been found that the electrical variables of the control machine greatly affect the BCDFM steady‐state stability and characteristics.

Research limitations/implications

The work should be extended considering a validation of the established results through experimental tests.

Originality/value

The steady‐state small perturbation of the BCDFM model has been introduced for the first time, which is the key of the machine steady‐stability analysis and features investigation.

Citation

Jallali, F., Bouchhima, A. and Masmoudi, A. (2011), "Steady‐state operation of the brushless cascaded doubly fed machine: a survey", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 30 No. 1, pp. 222-245. https://doi.org/10.1108/03321641111091539