TY - JOUR
T1 - The brushless doubly fed reluctance machine and the synchronous reluctance machine - a comparison
AU - Betz, Robert E.
AU - Jovanovic, Milutin G.
AU - Jovanovic, Milutin G.
N1 - Funding Information:
Paper IPCSD 99–87, presented at the 1999 Industry Applications Society Annual Meeting, Phoenix, AZ, October 3–7, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Electric Machines Committee of the IEEE Industry Applications Society. Manuscript submitted for review June 1, 1999 and released for publication February 2, 2000. The work of R. E. Betz was supported by the Danfoss Visiting Professors Program and Prof. F. Blaabjerg at Aalborg University, Denmark, and the Australian Research Council.
PY - 2000/7
Y1 - 2000/7
N2 - The brushless doubly fed reluctance machine (BDFRM) is related to the better known brushless doubly fed induction machine (BDFIM). Research into doubly fed machines is motivated by the fact that they allow the use of a partially rated inverter in many variable-speed applications. Research into the BDFRM has been largely ignored in comparison to the BDFIM, despite the fact that it has the potential for greater efficiency as compared to the BDFIM, and the rotor is simpler to manufacture. This paper compares the BDFRM and its singly fed cousin, the synchronous reluctance machine. This is a natural comparison since both machines use the same reluctance rotor. The first part of the paper establishes relationships between the inductances of the two machines. This is then used to facilitate a comparison using the constraints that both machines have the same amount of active material, i.e., the same amount of copper and iron, and that the copper losses for both machines are the same. This analysis also allows an approximate comparison with the conventional squirrel-cage induction machine. The analysis is carried out using machine-independent normalizations.
AB - The brushless doubly fed reluctance machine (BDFRM) is related to the better known brushless doubly fed induction machine (BDFIM). Research into doubly fed machines is motivated by the fact that they allow the use of a partially rated inverter in many variable-speed applications. Research into the BDFRM has been largely ignored in comparison to the BDFIM, despite the fact that it has the potential for greater efficiency as compared to the BDFIM, and the rotor is simpler to manufacture. This paper compares the BDFRM and its singly fed cousin, the synchronous reluctance machine. This is a natural comparison since both machines use the same reluctance rotor. The first part of the paper establishes relationships between the inductances of the two machines. This is then used to facilitate a comparison using the constraints that both machines have the same amount of active material, i.e., the same amount of copper and iron, and that the copper losses for both machines are the same. This analysis also allows an approximate comparison with the conventional squirrel-cage induction machine. The analysis is carried out using machine-independent normalizations.
KW - Cascade machines
KW - Doubly fed machines
KW - Slip recovery
KW - Synchronous reluctance machines
UR - http://www.scopus.com/inward/record.url?scp=0034228687&partnerID=8YFLogxK
U2 - 10.1109/28.855966
DO - 10.1109/28.855966
M3 - Article
AN - SCOPUS:0034228687
SN - 0093-9994
VL - 36
SP - 1103
EP - 1110
JO - IEEE Transactions on Industry Applications
JF - IEEE Transactions on Industry Applications
IS - 4
ER -