Design Methodology of a Permanent Magnet Synchronous Machine for a Screwdriver Application

Bernard, Nicolas; Martin, Floran; Zaïm, Mohamed El Hadi

doi:10.1109/tec.2012.2199494

Cited by 36 publications

(11 citation statements)

References 29 publications

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“…Rundown is characterized by high speed and low torque, whereas tightening is distinguished by low speed and high torque. At tightening, copper losses are dominant, while magnetic losses dominate at rundown [26]. Traditionally, tightening losses have been dominant.…”

Section: Investigated Motormentioning

confidence: 99%

High-Frequency Characterization of Losses in Fully Assembled Stators of Slotless PM Motors

Millinger

Wallmark

Soulard

2018

IEEE Trans. on Ind. Applicat.

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PostprintThis is the accepted version of a paper published in IEEE transactions on industry applications. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination. IEEE transactions on industry applicationsAccess to the published version may require subscription. N.B. When citing this work, cite the original published paper. © © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Abstract-The recent emerge of wide band-gap (WBG) power transistors enables higher switching frequencies in electrical motor drives. Their full utilization from a system point of view requires quantification of the corresponding time-harmonic motor losses. As an initial step, this paper presents a unique study of stator losses for three different commercially available non-oriented silicon-iron (SiFe) steel grades (with lamination thicknesses 0.1, 0.2 and 0.3 mm). The investigations cover a wide frequency range (10-100 kHz) at different levels of DC-bias (up to 1.6 T). Iron losses are identified from measurements on fully assembled stators, deploying a novel technique. By utilizing fully assembled stators, no additional samples are required. Manufacturing influence is inherently incorporated. Results show that measured iron losses are twice as high at 10 kHz compared to Epstein test results, which emphasizes the need to incorporate manufacturing influence on iron losses at high frequencies. The level of DC-bias is also observed to have a significant impact on iron losses (up to 30 %). Even though thinner laminations are known for reducing iron losses, the reduction is much lower than anticipated in the studied frequency range due to skin effect. Using 0.1 mm lamination gauge instead of 0.3 mm reduces losses by 50 % at 10 kHz, while the same substitution at 100 kHz only reduces losses by 30 %. Future work includes loss separation in complete converter-fed machines.

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Section: Investigated Motormentioning

confidence: 99%

High-Frequency Characterization of Losses in Fully Assembled Stators of Slotless PM Motors

Millinger

Wallmark

Soulard

2018

IEEE Trans. on Ind. Applicat.

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“…As a result, the output of SPMSM is larger than that of IPMSM under 30,000 rpm but on the contrary the efficiency is lower. The reason is that except the losses dealt with in this paper additional eddy current losses generated in the sleeve and PM are much larger in the SPMSM [8][9][10]32]. However, as the load of blower increases in company with its speed, the efficiency of IPMSM is similar to that of SPMSM because in the IPMSM the influence of copper loss is dominant due to the rapid growth of input current to satisfy the required torque with its low back-EMF.…”

Section: (7)mentioning

confidence: 99%

Design and Evaluation of a Multi-layer Interior PM Synchronous Motor for High-Speed Drive Applications

Kim¹,

Hong²

2016

Journal of Magnetics

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In general, surface mounted PM synchronous motors (SPMSMs) are mainly adopted as a driving motor for high-speed applications, because they have high efficiency and high power density. However, the SPMSMs have some weak points such as the increase of magnetic reluctance and additional losses as a consequence of using a non-magnetic sleeve. Especially, the magneto-motive force (MMF) in the air-gap of the SPMSMs is weakened due to the magnetically increased resistance. For that reason, a large amount of PM is consumed to meet the required MMF. Nevertheless, it cannot help using the sleeve in order to maintain the mechanical integrity of a rotor assembly in high-speed rotation. Thus, in this paper, a multi-layer interior PM synchronous motor (IPMSM) not using the sleeve is presented and designed as an alternative of a SPMSM. Both motors are evaluated by test results based on a variety of characteristics required for an air blower system of a fuel cell electric vehicle.

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“…When the estimated value for the rotor radius is calculated then it is possible to calculate the length of the active part of the rotor for the particular machine to fulfill the required power and torque values. The optimization technique for the rotor volume, which also shows the high dependence on the thermal modeling is described in [8]. The next factor, that could cause the failure of PM and the rotor itself, is the elastic limitation.…”

Section: Mechanical Topologies and Limitationsmentioning

confidence: 99%

Design limitations of 6-slot 2-pole high-speed permanent Magnet Synchronous machines with Tooth-Coil windings

Uzhegov

Kurvinen

Pyrhönen

2014

2014 16th European Conference on Power Electronics and Applications

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Keywords<>, <>, <>, <>, <>. AbstractMechanical and electro-magnetic limitations of high-speed tooth-coil electrical machines having 6 slots and 2 poles are investigated. The paper analyses the performance of a designed high-speed Permanent Magnet Synchronous Generator with Tooth-Coil windings (TC-PMSM) with the topology mentioned. The generator nominal power is designed for 11 kW and nominal rotation speed is set to 31 200 rpm.

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Design Methodology of a Permanent Magnet Synchronous Machine for a Screwdriver Application

Cited by 36 publications

References 29 publications

High-Frequency Characterization of Losses in Fully Assembled Stators of Slotless PM Motors

High-Frequency Characterization of Losses in Fully Assembled Stators of Slotless PM Motors

Design and Evaluation of a Multi-layer Interior PM Synchronous Motor for High-Speed Drive Applications

Design limitations of 6-slot 2-pole high-speed permanent Magnet Synchronous machines with Tooth-Coil windings

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