Line start permanent magnet synchronous motors: Challenges and opportunities

Isfahani, Arash Hassanpour; Vaez‐Zadeh, Sadegh

doi:10.1016/j.energy.2009.04.022

Cited by 137 publications

(44 citation statements)

References 30 publications

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“…This phenomenon of oscillatory torques during the run-up period needs serious attention from the designers and users of the LSAFPM motors. The magnet braking torque T b is given by [43]:…”

Section: Resultsmentioning

confidence: 99%

Slot-Less Torus Solid-Rotor-Ringed Line-Start Axial-Flux Permanent-Magnet Motor

Mahmoudi¹,

Kahourzade²,

Rahim³

et al. 2012

PIER

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Abstract-This paper presents the design, analysis, and prototyping of a novel axial-flux permanent-magnet (AFPM) motor capable of auto-starting. The preliminary design is a slot-less double-sided solid-rotor line-start AFPM motor with 4 poles for high torque density and stable rotation. One spaced raised ring was added to the inner radii of the rotor disc for smooth line-start motor. The design allows the motor to operate at both starting and synchronous speeds. The basic equations for the solid ring of the rotor of the proposed axial-flux permanent-magnet motor are presented. Nonsymmetry of the designed motor led to its 3D time-stepping finite element analysis (FEA) via ANSYS 13.0, which evaluated the design parameters and predicted the transient performance. The designed motor was fabricated and tested, the experimental results showing good agreement with FEA simulation results. The prototype motor showed high starting torque and good synchronization.

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“…This phenomenon of oscillatory torques during the run-up period needs serious attention from the designers and users of the LSAFPM motors. The magnet braking torque T b is given by [43]:…”

Section: Resultsmentioning

confidence: 99%

Slot-Less Torus Solid-Rotor-Ringed Line-Start Axial-Flux Permanent-Magnet Motor

Mahmoudi¹,

Kahourzade²,

Rahim³

et al. 2012

PIER

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“…Non-renewable energy resources have been severely consumed with the atmospheric contamination and greenhouse effect [1]. Energy saving in general has become an essential problem for mankind today.…”

Section: Introductionmentioning

confidence: 99%

“…Examples of surface mounted type and embedded type, which are involved in this article, are shown in Figure 1. The performance of the PMSMs can be elevated by employing rare earth magnets [1,12,13]. In order to guarantee the designs of these machines in the best possible manner, many researches have been done in order to optimize the sizes of PMs [12,14].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Permanent Magnet Arrangement in Synchronous Motors

Liu

Lin

2017

Energies

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A general pattern, which can include different types of permanent magnet (PM) arrangement in PM synchronous motors (PMSMs) is presented. By varying the geometric parameters of the general pattern, the template can automatically produce different types of PM arrangement in the rotor. By choosing the best arrangement of PMs using optimization method, one can obtain a better performance and lower manufacturing cost. Six of the most widely used conventional types of rotor structures can be obtained through the parameter variation of the general pattern. These types include five embedded PM types and a traditional surface-mounted PM type. The proposed approach combines optimization method embedded with finite element method (FEM) for solving the multi-objective optimization for the PM structures. To save computing load, this paper employs a strategy of sub-group optimization, which is on account of the impact levels of the design parameters on the objective functions, and a parallel computation, which is a valid method to shorten the computing time. As an application example, a PMSM is optimally designed. Its simulation results and prototype experiments are provided to showcase the effectiveness of the proposed method.

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“…On the other hand, PMSMs, albeit their higher performance, produce a magnet brake torque that has a repercussion on its starting. In this way, PMSMs are not able to start with the mains, and LSPMSMs which are synchronous hybrid PM / reluctance highefficient motors are designed to solve this issue [5][6]. The flux of PM materials is selected based on a compromise between its operation near the unity PF and solving starting issues.…”

Section: Introductionmentioning

confidence: 99%

The Application of Classical Direct Torque and Flux Control (DTFC) for Line-Start Permanent Magnet Synchronous and its Comparison with Permanent Magnet Synchronous Motor

Soreshjani¹,

Heidari²,

Ghafari³

2014

Journal of Electrical Engineering and Technology

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-This paper attempts to design and present a comparison of classical Direct Torque Flux Control (DTFC) for Line-Start Permanent Magnet Synchronous Motor (LSPMSM) and its equal Permanent Magnet Synchronous Motor (PMSM). In order to present an in-depth analysis, both motors for DTFC Voltage Source Inverter (VSI)-fed in the same situations of different conditions are simulated and tested. The advantages of the proposed method for LSPMSM over the PMSM are discussed and analyzed.

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Line start permanent magnet synchronous motors: Challenges and opportunities

Cited by 137 publications

References 30 publications

Slot-Less Torus Solid-Rotor-Ringed Line-Start Axial-Flux Permanent-Magnet Motor

Slot-Less Torus Solid-Rotor-Ringed Line-Start Axial-Flux Permanent-Magnet Motor

Optimal Design of Permanent Magnet Arrangement in Synchronous Motors

The Application of Classical Direct Torque and Flux Control (DTFC) for Line-Start Permanent Magnet Synchronous and its Comparison with Permanent Magnet Synchronous Motor

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