Analytical models for exterior-type permanent magnet synchronous motors

Rahman, M.A.; Little, T.; Slemon, G.R.

doi:10.1109/tmag.1987.1065384

Cited by 22 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, permanent magnets are still also easily modeled by equivalent currents based on reluctance circuit MMFs. So, permanent magnets can be integrated in both reluctance circuits and electrical circuit models [56][57][58][59][60][61].…”

Section: Current Equivalent Of Permanent Magnetsmentioning

confidence: 99%

“…The separation between the leakage inductance L l and the magnetization inductance L m can be included in the two circuit equivalents of the two-reaction theory, as shown in Figure 51a. Then, it can be further rewritten as two Norton equivalents, similar to Rahman et al [56,58] and Sebastian et al [57] (illustrated in Figure 51b). Another approach is to include the leakage inductance L l and the stator winding resistance R s in the salient pole machine model discussed in this paper, then with a circuit according to Figure 52.…”

Section: Extended Circuit Modelmentioning

confidence: 99%

See 1 more Smart Citation

Simplified Current-Equivalent Circuit Models of Synchronous Reluctance Machines and Salient Pole Synchronous Machines Considering the Reluctance Torque

Mörée,

Leijon

2024

Energies

View full text Add to dashboard Cite

This paper describes a simplified one-phase equivalent circuit model of three-phase salient pole synchronous machines and synchronous reluctance machines. The model represents the pole saliency as a susceptance, with a magnitude based on the pole saliency and a phase angle based on twice the load angle. The reluctance torque itself is then modeled equivalent to a conductance. The model is made as an extension to Norton equivalents, where the internal inductance is connected as a shunt. This approach shares similarities to the magnetization shunt branch in circuit models of transformers and induction motors. The model is derived using the rotating dq-frame, using Park transform and two-reaction theory. The model is then rewritten to better fit one-phase equivalent circuit models, with the terminal voltage as the angular reference. The resulting two-pole model can then more easily be combined with basic circuit theory, thereby synthesizing dq-theory and phasor circuit models.

show abstract

Section: Current Equivalent Of Permanent Magnetsmentioning

confidence: 99%

Section: Extended Circuit Modelmentioning

confidence: 99%

Simplified Current-Equivalent Circuit Models of Synchronous Reluctance Machines and Salient Pole Synchronous Machines Considering the Reluctance Torque

Mörée,

Leijon

2024

Energies

View full text Add to dashboard Cite

show abstract

“…In 1985, Chalmers et al [11] evaluated the parameters E o , X do , X qo and R and the performance of high field PMSM's for variable frequency operation and pointed out that Honsinger suggested the measurement of these parameters to be done under actual operating condition with the machine loaded. In 1985-87, Rahman et al [65,66] derived analytical methods for both interior types and exterior type PMSMs with NdFeB magnets, in which the expressions for X d and X q were derived taking account of B-H non-linearity as well as saturation. Subsequently in 1991-1994, Rahman, Zhou [67,68] made modifications in the determination of saturated parameters of PMSM's when they used loading magnetic fields for this evaluation.…”

Section: Analytical Formulation or Fem-based Parameter Evaluationmentioning

confidence: 99%

Overview of research evolution in the field of line start permanent magnet synchronous motors

Ugale

Chaudhari

Pramanik

2014

IET Electric Power Applications

View full text Add to dashboard Cite

In this study, wide overview of the existing line start permanent magnet synchronous motors literature is presented. The treatment of the subject has been effectively subdivided in to five sections; (i) rotor topologies and design, (ii) steady state analysis, (iii) transient state analysis, (iv) parameter estimation and (v) high efficiency standards. Although, there are numerous papers published in each category, only those important papers which have made significant contributions in the developments and thus triggered research in this field are discussed here. 2 Rotor topologies and design The performance of the Merrill's PM excited synchronous motor [1] was found to be comparable with that of induction motor (IM). Fig. 1 shows the Merrill's rotor configuration. The four sets of flux loops (i.e. A, B, C and D) as shown in the figure, show the corresponding flux patterns under different operating conditions; and should not be taken as a complete flux distribution pattern for a single condition. The machine has negligible reluctance torque component. Alger's discussion on this paper is quite informative and he had postulated that LSPMSM will gain popularity if the future research produces a magnet of higher stored energy and coercive force. Douglas [2], then in 1959, derived the current loci of Merrill's motor by using Blondel's two-reactance theory and predicted that with improved magnet materials, the machine performance would be better. Subsequently, based on the guidelines by Merrill in his paper, a 2 pole, 0.5 hp machine was developed as shown in Fig. 2, and reported by Cahill and Adkins [3]. They found that the rated and the pull-out torque of this machine were less than those of IM of the same frame size because of the lower value of air gap flux density. Moreover, authors observed that this www.ietdl.org

show abstract

IPM motor drives for hybrid electric vehicles

Rahman

2007

2007 International Aegean Conference on Electrical Machines and Power Electronics

View full text Add to dashboard Cite

Analytical models for exterior-type permanent magnet synchronous motors

Cited by 22 publications

References 3 publications

Simplified Current-Equivalent Circuit Models of Synchronous Reluctance Machines and Salient Pole Synchronous Machines Considering the Reluctance Torque

Simplified Current-Equivalent Circuit Models of Synchronous Reluctance Machines and Salient Pole Synchronous Machines Considering the Reluctance Torque

Overview of research evolution in the field of line start permanent magnet synchronous motors

IPM motor drives for hybrid electric vehicles

Contact Info

Product

Resources

About