An Analytical Model and Optimization of a Novel Hybrid Rotor Machine for High Torque Density

Liu, Yuxi; Li, Liyi; Gao, Qing; Cao, Jiwei; Sun, Zhiyin

doi:10.1109/tec.2020.3008768

Cited by 14 publications

(7 citation statements)

References 30 publications

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“…The non-magnetic connector is employed to connect and fix the segments cores and PMs. Meanwhile, magnetic flux leakage in the PM's bottom is effectively eliminated [28]. Fig.…”

Section: Shrpmmentioning

confidence: 99%

“…IPM of spoke type can adopt magnetic circuit in parallel which can increase the magnetic flux area per-pole Apm, but the magnetization direction length Lpm will be halved [28]. However, SPM is exactly the opposite due to the PM space layout difference.…”

Section: B Electromagnetic Model Analysismentioning

confidence: 99%

“…15. The no-load back-EMF and torque in low load for SHRPM machine have been tested partially in [28]. Fig.…”

Section: Comparison Performancementioning

confidence: 99%

See 2 more Smart Citations

Electromagnetic Performance of the Novel Hybrid-Pole Permanent Magnet Machines for High Peak Torque Density

Liu¹,

Cao

Gao³

et al. 2020

IEEE Access

Self Cite

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“…The non-magnetic connector is employed to connect and fix the segments cores and PMs. Meanwhile, magnetic flux leakage in the PM's bottom is effectively eliminated [28]. Fig.…”

Section: Shrpmmentioning

confidence: 99%

Section: B Electromagnetic Model Analysismentioning

confidence: 99%

See 1 more Smart Citation

Electromagnetic Performance of the Novel Hybrid-Pole Permanent Magnet Machines for High Peak Torque Density

Liu¹,

Cao

Gao³

et al. 2020

IEEE Access

Self Cite

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“…A summarized review of AM techniques used to solve the magnetic field on PMSM presented in Table C1. In this table, the calculation of flux density and all other machine quantities for Sd / Ss , internal/external rotor machine using different magnetization pattern has been addressed 1–75 …”

Section: Machine Quantitiesmentioning

confidence: 99%

A review on analytical models of brushless permanent magnet machines

Abbas,

Iqbal,

Lewicki

et al. 2023

Int J Numerical Modelling

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This study provides an in‐depth investigation of the use of analytical and numerical methods in analyzing electrical machines. Although numerical models such as the finite‐element method (FEM) can handle complex geometries and saturation effects, they have significant computational burdens, are time‐consuming, and are inflexible when it comes to changing machine geometries or input values. Analytical models based on magnetic equivalent circuits (MEC) or solving Maxwell's equations can be faster and more flexible, but less accurate for complex machine structures. The paper focuses on the recent development of analytical models for brushless permanent‐magnet (PM) machines that have become increasingly popular in low and medium‐power applications. The literature review covers the recent developments in analytical models for PM machines with respect to various machine quantities such as magnetic flux density components, induced voltage, inductances, electromagnetic force/torque, efficiency, or unbalanced magnetic force (UMF). It outlines the advantages and disadvantages of different analytical models such as the zero‐dimensional (0‐D), one‐dimensional (1‐D), two‐dimensional (2‐D), and three‐dimensional (3‐D) analytical methods, as well as the Maxwell and basic mathematical analysis. Although the MEC models are faster than the numerical model, they are not as accurate for various structures of electrical machines including a great magnetic air gap. They also note that the analytical models based on the Maxwell equations are faster than the numerical ones and have the potential to obtain acceptable accuracy similar to the numerical models in electrical machines. Overall, this literature review provides valuable insights for researchers and engineers in selecting appropriate analytical models for PM machines. It highlights the trade‐offs between accuracy and computational efficiency when choosing between numerical and analytical models, and the flexibility of analytical models to address changes in machine geometries or input values. Additionally, this helps researchers save time in determining appropriate references regarding the analytical models of brushless PM machines.

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“…A lot of effort is made to find machines with low speed and large torque density [5]- [8]. Recently, Vernier permanent magnet machines (VPMs) have come into the view of researchers.…”

Section: Introductionmentioning

confidence: 99%

Design of a Dual-Permanent-Magnet Vernier Machine to Replace Conventional Surface-Mounted Permanent Magnet Motor for Direct-Drive Industrial Turbine Application

et al. 2023

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Surface-mounted permanent magnet motors (SMPMMs) have been widely used in industrial fields. However, when it comes to direct-drive low-speed large-torque fields, SMPMMs have several problems, such as lower slot filling factor, complicated fabrication, low efficiency, and bulky size. Recently, dual-permanent-magnet Vernier motors (DPMVMs) have been investigated due to their high torque density for low-speed direct-drive applications. However, so far, there is little research that demonstrates the application of the DPMVM for real industrial fields and quantitatively compares the performances of the DPMVM and the SMPMM. This paper studies the application of a DPMVM to the direct-drive industrial turbine as a replacement for conventional SMPMM. Rectangular and trapezoidal PMs are first applied to DPMVM in this paper. The performances of the DPMVM are quantitively compared with two typical SMPMMs. One is the design that has the same stator slots as the DPMVM, while the other has the same rotor pole pairs as the DPMVM. Economic costs are considered to form a thorough comparison between DPMVM and SMPMMs. It is revealed that with rectangular and trapezoidal PMs adopted in the DPMVM, the cost of PMs is significantly reduced with little sacrifice of performance. The efficiency of DPMVM is around 12% higher, and the material cost is reduced by 6.87% compared with the SMPMN.

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An Analytical Model and Optimization of a Novel Hybrid Rotor Machine for High Torque Density

Cited by 14 publications

References 30 publications

Electromagnetic Performance of the Novel Hybrid-Pole Permanent Magnet Machines for High Peak Torque Density

Electromagnetic Performance of the Novel Hybrid-Pole Permanent Magnet Machines for High Peak Torque Density

A review on analytical models of brushless permanent magnet machines

Design of a Dual-Permanent-Magnet Vernier Machine to Replace Conventional Surface-Mounted Permanent Magnet Motor for Direct-Drive Industrial Turbine Application

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