Comparative Study of Modular-Stator and Conventional Outer-Rotor Flux-Switching Permanent-Magnet Motors

Zhao, Jing; Fu, Wenqi; Zheng, Yun; Chen, Zhe; Wang, Yonggui

doi:10.1109/access.2018.2890163

Cited by 11 publications

(6 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Flux switching PM motors are preferable to conventional PM motors in terms of field weakening capability since the excitation field is parallel to the field created by the armature winding [17][18][19]. Flux switching PM motors are also fairly stable and have good fault-tolerant behaviour [22]. Furthermore, the flux linkages in these motors are naturally bipolar leading to a complete sinusoidal back-EMF and resulting in fewer harmonics [20].…”

Section: Introductionmentioning

confidence: 99%

Performance optimisation of a segmented outer rotor flux switching permanent magnet motor for direct drive washing machine application

Saghin

Ghaheri

Shirzad

et al. 2021

IET Electric Power Appl

View full text Add to dashboard Cite

Electrical machines are widely used in home appliances, the performance of which is mostly related to the quality function of the electrical machines. What has been used so far in home appliances brought with themselves a wide assortment of advantages and disadvantages. With the aim to overcome the drawbacks of the previously implemented electrical motors in washing machines, a new configuration of flux switching permanent magnet motor (FSPM) with the segmented outer rotor (SOR-FSPM) is proposed benefitting from a direct driven drum. To reduce the cogging torque as well as torque ripple and to improve the total harmonic distortion, cutting the stator in a way to lower overlapping between the rotor and stator pole, inserting notches into the poles of the rotor to modify the air gap between the stator teeth and the rotor segments are proposed. The Taguchi method and sensitivity analysis are further applied to find the best combination set of changes in such a way to smoothen the chart showing reluctance between stator and rotor and fix the zero-point crossing of the flux linkages in different rotor positions. Finally, the proposed SOR-FSPM is prototyped, and experimental results along with the finite element method results are discussed and compared in order to verify the design process. K E Y W O R D SAC motors, brushless machines, design of experiments, finite element analysis, optimisation, permanent magnet machines, Taguchi methodsThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

show abstract

Section: Introductionmentioning

confidence: 99%

Performance optimisation of a segmented outer rotor flux switching permanent magnet motor for direct drive washing machine application

Saghin

Ghaheri

Shirzad

et al. 2021

IET Electric Power Appl

View full text Add to dashboard Cite

show abstract

“…Flux‐switching machines (FSMs) are extensively investigated in electric vehicle and direct drive wind turbine applications since they are characterised as robust and high power density machines [1–5]. Conventional FSM topologies are either excited by the excitation windings or the permanent magnets (PMs) which both are placed in the stator structure [6–9].…”

Section: Introductionmentioning

confidence: 99%

Non‐linear analytical modelling and optimisation of a 12/8 rotor excited flux‐switching machine

Ajamloo¹,

Ghaheri

Shirzad

et al. 2020

IET Electric Power Applications

View full text Add to dashboard Cite

Rotor excited flux‐switching permanent magnet machines (REFSPMs) have been recently introduced exhibiting high power density and low permanent magnet consumption. Despite the advantages, 12/8 configuration of REFSPM has an intrinsic unbalanced voltage waveform due to the existence of even‐order harmonics. Aiming to improve the machine voltage THD, using notches on the rotor segments is proposed. To study the effects of the rotor notch on machine performance with low computational time, the non‐linear magnetic equivalent circuit is developed taking into account the effects of fringing fluxes, iron saturation, and rotor transition. An optimisation procedure based on Taguchi method is applied to minimise the voltage THD value taking the effects of uncontrollable factors into account. Finally, the REFSPM is prototyped and the measured results are compared with the analytical and numerical results.

show abstract

“…With the increase in computational speeds and advances in numerical methods, analysis techniques such as the finite element method (FEM) have become indispensable and powerful analysis tools [1]- [4]. However, even with the use of high-performance computers, analyzing a large number of models or running optimization algorithms substantially increases the overall analysis time [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Novel Non-Linear Transient Path Energy Method for the Analytical Analysis of the Non-Periodic and Non-Linear Dynamics of Electrical Machines in the Time Domain

Gabdullin

2019

IEEE Access

View full text Add to dashboard Cite

This paper proposes a novel analytical method for the analysis of the dynamics of electrical machines. The method is applied to the analysis of complex permanent magnet (PM)-type magnetic contactors (MCs), which exhibit strong magnetic non-linearities and a high portion of stray and leakage magnetic fluxes. The latter means that the analysis of PM-type MCs using traditional magnetic equivalent circuit (MEC) methods is impossible, thus requiring computationally expensive and time-consuming finite element analysis (FEA). To overcome the limitations of traditional MECs, the magnetic field distribution in PM-type MC is studied in great detail, and a novel non-linear dynamic MEC (ND-MEC) method is proposed. The accuracy of the ND-MEC method is comparable to that of FEA which is achieved by accounting for non-linear effects and dynamic changes in the magnetic flux distribution using a novel stray path elliptical function. Furthermore, the applicability of the ND-MEC is extended to the time domain by combining it with the time difference method (TDM). The complete method, referred to as the non-linear transient path energy method (NT-PEM), combines the ND-MEC, TDM, and a path energy method for the calculation of electromagnetic forces. The validity of the NT-PEM is verified by comparing it with 3D FEA and experimental results obtained from a PM-type MC prototype. The NT-PEM is a fast and inexpensive alternative to FEA, which is particularly advantageous when many designs must be analyzed and optimized while reducing analysis costs. The proposed method can also be applied to the analysis of emerging technologies dealing with multiphysics coupled problems, as in the case of smart materials.INDEX TERMS Magnetic contactor, magnetic equivalent circuit (MEC), nonlinear dynamics, permanent magnets, stray flux modeling.

show abstract

Comparative Study of Modular-Stator and Conventional Outer-Rotor Flux-Switching Permanent-Magnet Motors

Cited by 11 publications

References 19 publications

Performance optimisation of a segmented outer rotor flux switching permanent magnet motor for direct drive washing machine application

Performance optimisation of a segmented outer rotor flux switching permanent magnet motor for direct drive washing machine application

Non‐linear analytical modelling and optimisation of a 12/8 rotor excited flux‐switching machine

Novel Non-Linear Transient Path Energy Method for the Analytical Analysis of the Non-Periodic and Non-Linear Dynamics of Electrical Machines in the Time Domain

Contact Info

Product

Resources

About