Modeling and analysis of BCDFM: effect of rotor‐phase sequence connection

Abstract

Purpose

The paper seeks to investigate the effect of the rotor‐phase sequence connection on the steady‐state stability of the brushless cascaded doubly‐fed machine (BCDFM). The stability analysis is carried out considering the eigenvalue method.

Design/methodology/approach

The BCDFM includes a two wound‐rotor induction machines: a power machine cascaded to a control one. The BCDFM modeling is firstly treated considering a Park reference frame linked to the rotating field of the power machine, and for both rotor‐phase sequence connections. 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 the BCDFM steady‐state stability and efficiency.

Findings

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

Research limitations/implications

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

Originality/value

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

Citation

Jallali, F. and Masmoudi, A. (2012), "Modeling and analysis of BCDFM: effect of rotor‐phase sequence connection", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 31 No. 1, pp. 261-278. https://doi.org/10.1108/03321641211184968