Abstract
The Brushless Doubly-Fed Reluctance Machine (BDFRM) has been widely investigated in numerous research studies since it is brushless and cageless and there is no winding on the rotor of this emerging machine. This feature leads to several advantages for this machine in comparison with its induction counterpart, i.e., Brushless Doubly-Fed Induction Machine (BDFIM). Less maintenance, less power losses, and also more reliability are the major advantages of BDFRM compared to BDFIM. The design complexity of its reluctance rotor, as well as flux patterns for indirect connection between the two windings mounted on the stator including power winding and control winding, have restricted the development of this machine technology. In the literature, there is not a comprehensive review of the research studies related to BDFRM. In this paper, the previous research studies are reviewed from different points of view, such as operation, design, control, transient model, dynamic model, power factor, Maximum Power Point Tracking (MPPT), and losses. It is revealed that the BDFRM is still evolving since the theoretical results have shown that this machine operates efficiently if it is well-designed.
Highlights
In recent decades, Doubly-Fed Machines (DFMs) [1,2,3] have been extensively used in different applications due to using partially-rated converters to control the machine, leading to lower converter cost [4]
Due to the mentioned advantages of Brushless Doubly-Fed Reluctance Machine (BDFRM) compared to Brushless Doubly-Fed Induction Machine (BDFIM), such as low manufacturing cost arising from its reluctance rotor, high reliability arising from the brushless structure, low losses, and lower maintenance needs, research studies have been conducted since the 1990s to analyze such machines [29]
Simpler control and higher efficiency of BDFRM compared to BDFIM are achieved by the improvement of the reluctance rotor design
Summary
Doubly-Fed Machines (DFMs) [1,2,3] have been extensively used in different applications due to using partially-rated converters to control the machine, leading to lower converter cost [4]. Due to the mentioned advantages of BDFRM compared to BDFIM, such as low manufacturing cost arising from its reluctance rotor, high reliability arising from the brushless structure, low losses, and lower maintenance needs, research studies have been conducted since the 1990s to analyze such machines [29]. Simpler control and higher efficiency of BDFRM compared to BDFIM are achieved by the improvement of the reluctance rotor design Such reasons made it necessary to conduct more research on the Brushless Doubly-Fed Reluctance Generator (BDFRG) [36]. The conducted research studies in different fields, such as operation, design, and control of BDFRM, are reviewed
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