Design of Double Stator Permanent Magnet Synchronous Motor With Low Speed Large Torque

Yang, Sen; Zhang, Fengge; Zhang, Zhaoyu; Líu, Hao

doi:10.1109/scems.2018.8624747

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…The harmonic distortion rate k M of the air‐gap flux density is given by equation [18].

k_{M} = \frac{\sqrt{\sum_{i = 2}^{n} B_{δ i}^{2}}}{B_{δ italic1}} \times 100 %

where B δ1 is the amplitude of the fundamental wave, B δi is the amplitude of the i th harmonic, and i is the harmonic order.…”

Section: Performance Analysis and Comparison Of The Four Ds‐pmsmsmentioning

confidence: 99%

Comparison and analysis of different rotor structures of double‐stator permanent magnet synchronous motor

Zhang

et al. 2022

IET Electric Power Appl

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Compared with the single-stator permanent magnet synchronous motor(SS-PMSM), the double-stator permanent magnet synchronous motor(DS-PMSM) can make full use of the space in the motor cavity to make it have higher torque density, so it is more suitable for direct-drive occasions with low-speed and high-torque. This paper aims to design and compare the parameters and performances of DS-PMSMs with four different rotor structures: 1)Series magnetic circuit of radial magnetised single-layer permanent magnet (type Ⅰ), 2)Series magnetic circuit of radial magnetised double-layer permanent magnet (type Ⅱ), 3)Parallel magnetic circuit of radial magnetised double-layer permanent magnet (type Ⅲ), 4)Parallel magnetic circuit of tangential magnetised permanent magnet(type Ⅳ). Firstly, the equivalent magnetic circuit method is used to analyse the magnetic circuits of the four DS-PMSMs. Next, the finite element analysis tool is used to compare the performances of the four DS-PMSMs with the same volume. Their air-gap flux density, noload back-EMF, cogging torque, torque characteristics, moment of inertia, rotor loss and efficiency are quantitatively analysed and compared. Finally, this paper provides guidance and suggestions for the selection of the rotor structure of DS-PMSM.

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“…The harmonic distortion rate k M of the air‐gap flux density is given by equation [18].

k_{M} = \frac{\sqrt{\sum_{i = 2}^{n} B_{δ i}^{2}}}{B_{δ italic1}} \times 100 %

where B δ1 is the amplitude of the fundamental wave, B δi is the amplitude of the i th harmonic, and i is the harmonic order.…”

Section: Performance Analysis and Comparison Of The Four Ds‐pmsmsmentioning

confidence: 99%

Comparison and analysis of different rotor structures of double‐stator permanent magnet synchronous motor

Zhang

et al. 2022

IET Electric Power Appl

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“…The electromagnetic torque and electromagnetic power of DS‐PMSM are the sum of the electromagnetic torque and electromagnetic power produced by the inner and outer motors [18]. The formula can be expressed as follows:

{T}_{\mathrm{t}\mathrm{o}\mathrm{t}\mathrm{a}\mathrm{l}}={T}_{\mathrm{o}}+{T}_{\mathrm{i}}

{P}_{\mathrm{t}\mathrm{o}\mathrm{t}\mathrm{a}\mathrm{l}}={P}_{\mathrm{o}}+{P}_{\mathrm{i}}

where T i and T o are the electromagnetic torque produced by the inner and outer motors respectively; P i and P o are the electromagnetic power produced by the inner and outer stator motors respectively.…”

Section: Design Of Rotor Magnetic Circuit Topologymentioning

confidence: 99%

“…The electromagnetic torque and electromagnetic power of DS-PMSM are the sum of the electromagnetic torque and electromagnetic power produced by the inner and outer motors [18]. The formula can be expressed as follows:…”

Section: Design Of Rotor Magnetic Circuit Topologymentioning

confidence: 99%

Design of high power density double‐stator permanent magnet synchronous motor

Guo

Wang

et al. 2022

IET Electric Power Appl

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Compared with the traditional permanent magnet synchronous motor (PMSM), the double-stator permanent magnet synchronous motor (DS-PMSM) can utilise the internal space adequately and has high power density. In this study, the design method of this kind of motor will be researched. Different rotor magnetic circuit topologies are analysed while keeping the outer diameter of outer stator unchanged, and the rotor magnetic circuit topologies with higher power density are selected. Furthermore, the effects of pole-arc coefficient and stator split ratio on the power density of the motor are analysed, so a high power density DS-PMSM can be designed. On this basis, a kind of magnetic pole structure with unequal pole-arc coefficient is proposed to solve the problem of large torque ripple in DS-PMSM. Finally, the DS-PMSM is investigated by the FEA, compared with the traditional single stator PMSM, the average torque of the DS-PMSM is increased by 62.2%, and the torque ripple is only 3.2%.

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“…The comparison of mentioned embedded pole machines is depicted in Table 1. Nowadays, in PMSM, the dual stator system is getting more prominent rather than the single stator system [32]. That is because, in the dual stator configuration, the power flowing to the load from both the outer and inner stator terminals is summed up and thereby provides a high density for rotating the rotor [33].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of dual stator six‐phase embedded‐pole permanent magnet synchronous motor for electric vehicle application

Kumar¹,

Devi²,

Chetri³

et al. 2022

IET Electrical Syst in Trans

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The motive of this study is to analyse the characteristics of a novel dual‐stator embedded‐pole six‐phase permanent magnet synchronous motor for the application of electric vehicles. A comparative analysis of two separate motor topologies, namely, dual stator embedded‐pole six‐phase permanent magnet synchronous motor and single stator single rotor surface‐mounted permanent magnet synchronous motor, is accomplished to illustrate the performance superiority of the proposed motor. Furthermore, for optimal designing of the proposed motor, a design methodology has also been presented. For the above application, the motor should retain high torque density (HTD) and high reliability. In this regard, a novel H‐Shaped flux barrier is introduced in the rotor portion, which fulfils the requirement of HTD. Moreover, the availability of two sets of the stator winding enhances the performance efficiency and ensures the proposed motor's more significant fault‐tolerating ability of the motor. For performance evaluation, the Finite Element Method analysis is chosen, as it gives appropriate and precise results. From the above analysis, it is concluded that the HTD and the proposed motor's dynamic performance are better than the above‐mentioned conventional motor.

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Design of Double Stator Permanent Magnet Synchronous Motor With Low Speed Large Torque

Cited by 10 publications

References 4 publications

Comparison and analysis of different rotor structures of double‐stator permanent magnet synchronous motor

Comparison and analysis of different rotor structures of double‐stator permanent magnet synchronous motor

Design of high power density double‐stator permanent magnet synchronous motor

Performance analysis of dual stator six‐phase embedded‐pole permanent magnet synchronous motor for electric vehicle application

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