Various design techniques to reduce cogging torque by controlling energy variation in permanent magnet motors

Hwang, Seonghwan; Eom, Jae-Boo; Jung, Yun‐Hoa; Lee, Deug-Woo; Kang, Beom-Soo

doi:10.1109/20.951313

Cited by 192 publications

(19 citation statements)

References 2 publications

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“…As mentioned in the introduction, to reduce the cogging-force component, all the PMSM design techniques can be adopted for the PMLSM. Various reduction techniques have been reported and investigated in the literature, including skewing, tooth width design, teeth paring, notching, PM shaping [19], pole pairing [20][21][22], nonuniformly distributed teeth [23], pole shifting [24], pole-slot combination [25], and non-uniform air gaps [26]. Among these previous design techniques, the pole-slot combination is especially interesting because it is unrelated to the motor geometry.…”

Section: Detent Force Reduction Design Strategymentioning

confidence: 99%

Teeth Arrangement and Pole–Slot Combination Design for PMLSM Detent Force Reduction

Chung¹,

Lee

2021

Energies

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This paper introduces and investigates a new design method that employs both teeth arrangement and pole–slot combination to reduce the detent force of permanent magnet linear synchronous motors (PMLSMs) for precision position control. The proposed topology is a 10-pole, 12-slot-based PMLSM comprising two sections that significantly reduce the detent force without implementing a skewing design. It was analytically and experimentally confirmed that the proposed design effectively reduces detent force with a negligible sacrifice of mover length. The general characteristics and servo performance of the proposed PMLSM were experimentally examined and then discussed.

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Section: Detent Force Reduction Design Strategymentioning

confidence: 99%

Teeth Arrangement and Pole–Slot Combination Design for PMLSM Detent Force Reduction

Chung¹,

Lee

2021

Energies

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“…Research on the design of BLDC motor with a dual rotor has already been discussed and developed by many researchers. Study on the theory of injecting harmonics to improve torque capacity [4], application of magnet or rotor skew to improve torque ripple [5][6][7], study on applying magnet segmentation [8], and research to reduce harmonics of back electromotive force (EMF) are being actively conducted [9,10].…”

Section: Introductionmentioning

confidence: 99%

Study on Process Derivation and Characteristic Analysis for BLDC Motor Design Using Dual Rotor Structure with High Torque Density

et al. 2020

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In this paper, the design process of brushless DC (BLDC) motor adopting the dual rotor structure that can reduce the overall size of the motor while generating the same torque as the conventional permanent magnet BLDC motor is analyzed. A simple size is selected by obtaining the torque per rotor volume (TRV), and a method of matching the counter electromotive force by selecting the pole-arc of the magnet through a magnetic equivalent circuit is analyzed. Since the efficiency is low because the 120-degree commutation method is selected, the middle stator is optimized through detailed design through the experimental design method. Afterwards, it has the advantage of being able to shift without stopping due to the characteristic of a dual rotor. For this, an analysis of the driving characteristics for each mode is performed.

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“…Due to the cogging forces of ladder secondary linear induction motors have a high nonlinear characteristic, the prediction of cogging forces using the one dimension field method can not estimate the cogging forces precisely [3]. Cogging force can be calculated by electromagnetic finite element analysis (FEA).…”

Section: Introductionmentioning

confidence: 99%

Investigation of cogging forces using reluctance circuits equivalent approximation in a ladder secondary singlesided linear induction motor

Rusli¹,

Wardana²,

Choiron³

et al. 2019

EEJET

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Лiнiйнi асинхроннi двигуни останнiм часом вiдiграють важливу роль в позицiонуваннi лiнiйного руху. Однак вони мають низький рiвень точностi для застосування дуже низьких швидкостей. Для пiдвищення чiткостi ЛАД, особливо при застосуваннi дуже низьких швидкостейвисокопродуктивний двигун -наявнiсть сил зчеплення за рахунок змiни магнiтної провiдностi повiтряного зазору або iнтерактивної змiни магнiтного поля i крайового ефекту в односторонньому лiнiйному асинхронному двигунi з багатоланковим вторинним елементом (ЛАДБВЕ) має бути зменшено. У даному дослiдженнi розробленi двi простi магнiтнi ланцюги: одно-i багатослотова модель. Аналiз сил зчеплення пов'язаний зi змiною магнiтної енергiї в повiтряному зазорi. Грунтуючись на магнiтнiй провiдностi в паралельних i послiдовних структурах, аналiз ЕСЛ виконується шляхом реалiзацiї першого i другого закону Кiрхгофа. Показано, що аналiтичнi результати близькi до результатiв експериментiв i програмного забезпечення методу скiнченних елементiв. В роботi дається прогноз замкнутої математичної моделi максимальних сил зчеплення для одностороннiх лiнiйних асинхронних двигунiв. Таким чином, данi результати можуть внести вклад в розробку фiзичного одно-або двостороннього лiнiйного асинхронного двигуна. Змiна щiльностi потоку в повiтряному зазорi в середнiй областi ЛАДБВЕ може бути використана при розрахунку сил зчеплення, а змiна полiв шляху магнiтного потоку в крайовiй областi може зменшити величину щiльностi потоку в повiтряному зазорi, але сили зчеплення в крайовiй областi можуть нейтралiзувати одна однуКлючовi слова: лiнiйний асинхронний двигун, сили зчеплення, ланцюг опору, електромагнiтне поле UDC 001.1(082)

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Various design techniques to reduce cogging torque by controlling energy variation in permanent magnet motors

Cited by 192 publications

References 2 publications

Teeth Arrangement and Pole–Slot Combination Design for PMLSM Detent Force Reduction

Teeth Arrangement and Pole–Slot Combination Design for PMLSM Detent Force Reduction

Study on Process Derivation and Characteristic Analysis for BLDC Motor Design Using Dual Rotor Structure with High Torque Density

Investigation of cogging forces using reluctance circuits equivalent approximation in a ladder secondary singlesided linear induction motor

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Various design techniques to reduce cogging torque by controlling energy variation in permanent magnet motors

Cited by 192 publications

References 2 publications

Teeth Arrangement and Pole–Slot Combination Design for PMLSM Detent Force Reduction

Teeth Arrangement and Pole–Slot Combination Design for PMLSM Detent Force Reduction

Study on Process Derivation and Characteristic Analysis for BLDC Motor Design Using Dual Rotor Structure with High Torque Density

Investigation of cogging forces using reluctance circuits equivalent approximation in a ladder secondary single­sided linear induction motor

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Investigation of cogging forces using reluctance circuits equivalent approximation in a ladder secondary singlesided linear induction motor