Cogging torque reduction by modifying stator teeth and permanent magnet shape on a surface mounted PMSG

Herlina, .; Setiabudy, Rudy; Rahardjo, Amien

doi:10.1109/isitia.2017.8124085

Cited by 11 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where Tmax, Tmin, and Tmean are the maximum, minimum, and mean values of the torque profile. Torque ripple in SM-PMSGs can be decomposed into two main components: load-independent cogging torque, resulting from the reciprocal action between the permanent magnet (PM)'s excitation magnetic field and the stator slot [24], and load-dependent torque pulsation, originating from the harmonic component of armature current and back-EMF [25]. Cogging torque is one of the essential factors in wind turbines, especially in high-performance applications such as SM-PMSG, since it creates vibration, acoustic noises, and friction on the generator, preventing the turbine from rotating at low speeds [8], decreasing its performance and limiting its lifespan [9].…”

Section: Torque Ripplementioning

confidence: 99%

Torque ripple and mass minimization of a 20-MW direct drive offshore wind generator

Hoang

Nguyen

2022

UD-JST

View full text Add to dashboard Cite

This article investigates the structural optimization of a 20-MW offshore wind generator to minimize the torque ripple and mass. The surface-mounted permanent magnet topology will be chosen for the generator. In addition, the double-layer armature winding configuration will be utilized. The direct-drive technology will be adopted to increase the reliability of the offshore wind energy conversion system. The multi-objective optimization of the generator is carried out based on the particle swarm algorithm. Results show that the torque ripple of the optimal model is significantly reduced to as much as 0.41% at full-load conditions making the configuration suitable for the high-power offshore wind generator.

show abstract

Section: Torque Ripplementioning

confidence: 99%

Torque ripple and mass minimization of a 20-MW direct drive offshore wind generator

Hoang

Nguyen

2022

UD-JST

View full text Add to dashboard Cite

show abstract

“…One of the most important methods of cogging torque reduction is to optimize the parameters that will affect the air gap reluctance change [Herlina, 2017]. Generally, these parameters are magnet sizes and stator slot wedge sizes.…”

Section: Introductionmentioning

confidence: 99%

Dış Rotorlu Yüzeye Monte PMSM için Vuruntu Momentinin İncelenmesi

Mutluer¹

2021

European Journal of Science and Technology

View full text Add to dashboard Cite

One of the most important structural problems for permanent magnet synchronous motors is the cogging torque. One of the most effective ways to reduce the cogging torque is that magnets or slots are skewed. However, this will negatively affect the motor cost and production time. On the other hand, the cogging torque depends on the change in the reluctance of the motor in the air gap during operation. Therefore, the most important design approach to reduce the cogging torque is to examine the parameters that affect the air gap reluctance. In this study, the change of air gap reluctance of surface mounted permanent magnet synchronous motor with outer rotor during operation is investigated. For this purpose, the five most important parameters affecting the air gap reluctance change are selected. In this way, the best motor model with low cogging torque is tried to be obtained.

show abstract

“…In the study conducted on the stator part, a different generator model was created and cogging torque was optimized by adding pieces in different geometrical shapes (semi‐cylinder, square, triangle) to the stator tooth. Among these models, the most successful optimization was achieved with the semi‐cylinder design 25,26 . Nevertheless, in the use of these methods, the distribution of magnetic flux density in the teeth must be considered and the condition in which the core material reaches saturation must be heeded.…”

Section: Introductionmentioning

confidence: 99%

Cogging torque analysis in permanent magnet synchronous generators using finite elements analysis

Dalcalı

2020

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Background: A number of generator types are used as energy converters in wind turbines. Despite the advantages of PMSG such as high-power density, high efficiency and low speed, the effect of the cogging torque occurring in PMSG must be reduced. Aim: The aim of this study is cogging torque optimization of internal rotor, surface mounted, PMSGs used in wind turbines with high number of slots and poles (84/14). Materials and methods: The performance and cogging torque characteristic of the generator have been studied by the finite element analysis (FEA) method. Results: While the cogging torque value of the initial generator 580 mNm, with changing skew it is optimized to 277.04 mNm, with changing pole arc offset it is tuned to 550 mNm. With a notch on the magnet and teeth it is minimized to 417.25 mNm and 383.9 mNm, respectively. Finally, increasing the ratio of slot opening to slot pitch, undermine the value of cogging torque. Conclusions: The obtained results illustrate that any improvement in cogging torque characteristic using the applied methods accordingly compromises other merits such as flux density, output power, labor and cost.

show abstract

Cogging torque reduction by modifying stator teeth and permanent magnet shape on a surface mounted PMSG

Cited by 11 publications

References 14 publications

Torque ripple and mass minimization of a 20-MW direct drive offshore wind generator

Torque ripple and mass minimization of a 20-MW direct drive offshore wind generator

Dış Rotorlu Yüzeye Monte PMSM için Vuruntu Momentinin İncelenmesi

Cogging torque analysis in permanent magnet synchronous generators using finite elements analysis

Contact Info

Product

Resources

About