Improved rotor pole geometry of a PMSM for wind turbine applications with multiple high-speed generators

“…Conventional electric motors have been popular in a variety of applications including transportation [1,2], wind turbine generators [3] and automation industry [4]. Taking advantages of micro-electro-mechanical system (MEMS) techniques, a micro electric motor can be realized.…”

Section: Introductionmentioning

confidence: 99%

A self-attachable and self-alignable micro electromagnetic linear actuator

Zhi¹,

Tang²,

Wang³

et al. 2020

J. Micromech. Microeng.

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This paper presents the design, fabrication and characterization of a novel micro electromagnetic linear actuator, which exhibits two highlights: slider self-alignment and self-attachment capability. Such characters are realized by deliberately utilizing the attractive force between the permanent magnets (Nd2Fe14B) of the slider and nickel ferromagnetic cores embedded in the stator. Actuation is achieved via thrust from both meander micro copper coils and nickel ferromagnetic cores in the stator to the permanent magnets of the slider. The actuator is fabricated by the micro machining process. The surface magnetic property of the slider is simulated and experimentally measured. The eccentric experiment is conducted to evaluate the attraction force between the slider and stator, which proves its self-attachment characteristics. The device is actuated by two-phase sinusoidal currents with a 0.5 A amplitude under an open-loop condition. The slider demonstrates self-alignment movements before moving forward when misalignment occurs. The actuation experimental results show that the average velocity of the slider reaches 4 mm s–1 and 12 mm s–1 at 10 Hz and 30 Hz, respectively. Further increasing the input frequency to 50 Hz leads to the unsteady actuation state, indicating the actuator bandwidth is less than 50 Hz under an open-loop condition.

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“…Cristian Andrei [4] presented improved sinusoidal rotor field poles to reduce the cogging torque and total loss of PMSM for wind turbine application. Through optimizing the air gap ratio of the different rotor shapes, a reduction of the cogging torque of almost 86% and a reduction of the total losses of more than 18% in the rated operation point are achieved comparing to the reference machine to an exemplary adapted geometry.…”

Section: Introductionmentioning

confidence: 99%

An high-speed low-noise rotor topology for EV/HEV PMSM

Hu¹,

Huang

Xu³

2017

Trans. Electr. Mach. Syst.

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Permanent magnet synchronous motor (PMSM) for EV/HEV pursues higher efficiency, higher power density, higher rotation speed and better NVH performance. To meet these requirements, an improved triangle rotor topology is presented. The new rotor topology is researched through comparing the performance with V shape rotor and traditional triangle shape rotor. The comparing results on air-gap flux density, key order radial forces, sound pressure, inductance, torque, antidemagnetization capability and efficiency proved the advantage of the new rotor topology.

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Improved rotor pole geometry of a PMSM for wind turbine applications with multiple high-speed generators

Cited by 4 publications

References 13 publications

Complete and accurate modular numerical computation scheme for multi‐coupled electric drive systems

Complete and accurate modular numerical computation scheme for multi‐coupled electric drive systems

A self-attachable and self-alignable micro electromagnetic linear actuator

An high-speed low-noise rotor topology for EV/HEV PMSM

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