Comparison of outer rotor PMSM with different pitch factors of q=1/2 and q=1/4 at same rotor geometry

Eilenberger, Andreas; Heissenberger, Johannes; Kogler, Florian; Schroedl, Manfred

doi:10.1109/iemdc.2009.5075317

Cited by 4 publications

(3 citation statements)

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“…The model of the reluctance torque within the circuit model is handled by a complex susceptance. Complex susceptance models (inverse complex inductance models) have been used in other previous studies to model the impact of salient poles [63][64][65]. Similarly, they have been used in models of nonlinear magnetization to include the impact of saturation [66].…”

Section: Reluctance Machine 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

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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.

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Section: Reluctance Machine 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

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“…The subsequent short-circuit calculation has been presented in [1] and [2]. In the following, steady-state operation is supposed.…”

Section: A Steady-state Rotor Oriented Short-circuit Currentsmentioning

confidence: 99%

Sensorless electric traction drive with 500 Nm outer rotor permanent magnet synchronous machine

Demmelmayr

Eilenberger

Schroedl

2010

The XIX International Conference on Electrical Machines - ICEM 2010

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This paper presents calculations and measurements for a permanent magnet synchronous machine (PMSM) with buried magnets. Due to wide field weakening capability and high utilisation of this external rotor machine, it can be especially used for traction applications. The steady-state torque is about 346 Nm and overload torque at three times nominal current is about 580 Nm. Fractional-slot concentrated windings instead of distributed windings are used to increase the degree of automation. The short-circuit-proof machine is non forced air-cooled. The no-load torque ripple is calculated by numerical simulation and compared with measurement results. Also the so-called "Characteristic INFORM curves" for sensorless position control capability are presented. The efficiency curve of the machine provides high effiency of 94 % over a wide operation range.

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“…Nachfolgende Berechnungen basieren auf Verö ffentlichungen (Kleinrath, 2006) und (Eilenberger et al, 2009). Die normierte, komplexe Statorspannungsgleichung einer PSM im rotorfesten dq-Koordinatensystem kann dargestell werden mittels…”

Section: Kurzschlussfestigkeitunclassified

Sensorloser Betrieb von PM-Außenläufermaschinen mit konzentrierten Wicklungen

Demmelmayr

Schrödl

Eilenberger

2011

Elektrotech. Inftech.

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Der vorgestellte Antrieb mit Permanentmagn eterregter Synchronmaschine (PSM) zeichnet sich durch hohes Drehmoment pro Volumen, hohe Wirkungsgrade bis weit in den Feldschwä chbereich und Dauerkurzschlussfestigkeit aus. Nach einem Ü berblick zur Auslegung der Maschine wird die sensorlose Regelung vorgestellt. Diese eignet sich fü r Ü berlast bis dreifachen Dauerstrom im gesamten Drehzahlbereich bis zum Stillstand. Die INFORM-Ortskurven (Indirekte Flusserfassung durch Online-Reaktanzmessung) zur Beurteilung der Sensorlos-Fä higkeit veranschaulichen dieses Verhalten. Die implementierte Regelstruktur und Messungen von Wirkungsgrad und Drehmoment des Antriebs werden prä sentiert. Dieser Bericht stellt zudem Berechnung, Simulation und Messungen zur Kurzschlussfestigkeit dar. Schlü sselwö rter: sensorlose Regelung; Permanentmagnet-Synchromaschine; elektrischer TraktionsantriebSensorless operation of outer-rotor permanent magnet drives with concentrated windings.A drive with permanent magnet synchronous machine (PSM) is presented, which is characterized by a high torque per volume ratio, high efficiency up to wide field weakening range and short-circuit-strength. The construction of the machine contains analytical calculation and numerical simulation of the magnetic behaviour. The used sensorless control method, which works up to three-times rated current down to standstill, is shown. The depicted "Characteristic INFORM curves" (Indirect Flux detection by Online Reactance Measurement) illustrate the sensorless position control capability. Furthermore, the implemented control structure and efficiency and torque measurements of the drive are presented. Calculation, simulation and measurements of the short-circuit-behaviour are also discussed in this paper.

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Comparison of outer rotor PMSM with different pitch factors of q=1/2 and q=1/4 at same rotor geometry

Cited by 4 publications

References 1 publication

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

Sensorless electric traction drive with 500 Nm outer rotor permanent magnet synchronous machine

Sensorloser Betrieb von PM-Außenläufermaschinen mit konzentrierten Wicklungen

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