Study on the Influence of Different Rotor Structures on the Axial-Radial Flux Type Synchronous Machine

Qiu, H.; Yu, Wenfei; Tang, Bingxia; Mu, Yimin; Li, Wei Li; Cui, Yang

doi:10.1109/tie.2017.2784339

Cited by 28 publications

(18 citation statements)

References 25 publications

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“…Since the overload capability directly affects how the STHO-PMSM can achieve high performance, overload multiple, i.e., the ratio of maximum torque to rated torque, is the key design target of short-term high overload motors in the design process. It has been found that electrical load and Energies 2018, 11,3272 3 of 20 magnetic load are the two most important factors to achieve high torque density. The influence on the performance of motors that the electromagnetic load can significantly increase the overload multiple is studied in this section.…”

Section: Design Methods Of the Short-term High Overload Motormentioning

confidence: 99%

“…A lot of research on high power density motors has been performed. The effect of rotor structure on the magnetic adjusting performance of an axial-radial permanent magnetic machine was investigated [11]. The design of the PMSM retaining plate with 3-D barrier structure is optimized to reduce the loss compared to the conventional structure [12].…”

Section: Introductionmentioning

confidence: 99%

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The Optimization Design of Short-Term High-Overload Permanent Magnet Motors Considering the Nonlinear Saturation

Liu

Cao

et al. 2018

Energies

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Electric actuators with fast dynamic response and high torque density are widely used in aerospace and industrial applications. In this paper, the design and optimization of a short-term high-overload permanent magnet synchronous motor (STHO-PMSM) is presented. The rated working point is optimized according to the operating conditions of the motor. The effect of electromagnetic load on the extreme torque which mainly include ampoule number and the magnetic energy of the PM is researched. Due to the nonlinear saturation influence, the equivalent magnetic network model is established. The saturation torque discount factor is proposed to quantify the degree of the core magnetic saturation. Winding temperature model is presented to inspect the motor reliability. To verify the feasibility and accuracy of mathematical model analysis (MMA), the performance of the motor in different currents is investigated compared to the finite element analysis (FEA). A prototype motor is manufactured and tested. The results of the MMA, FEA, and experiment show that the designed motor can achieve the high performance with the 10 times overload in a short time. The method of the MMA can relatively accurately predict as well as take less time consumption.

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Section: Design Methods Of the Short-term High Overload Motormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Optimization Design of Short-Term High-Overload Permanent Magnet Motors Considering the Nonlinear Saturation

Liu

Cao

et al. 2018

Energies

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“…This loop continues through air gap δ 2 (Figure 2), passing to the adjacent squirrel cage of the inner rotor and then loops back the same way, as seen in Figure 2. It has been proven that the width of the air gap has a significant influence on the output characteristics and efficiency of axial-flux machines, especially on the ratio between stator copper losses and rotor core losses [16][17][18][19][20][21].…”

Section: Axial Flux Rotary Convertermentioning

confidence: 99%

Optimization of Permanent Magnet Parameters in Axial Flux Rotary Converter for HEV Drive

et al. 2022

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This paper focuses on the development and optimization of a special hybrid electric vehicle arrangement known as a four-quadrant rotary converter. The introduction summarizes the main advantages and disadvantages of existing topologies in radial and axial flux arrangements. Based on previous experience, we developed a novel axial flux arrangement that eliminates the problems and disadvantages associated with existing radial flux solutions. In addition, this paper evaluates and subsequently describes the optimization of permanent magnet parameters in an axial flux rotary converter unit. A number of 3D finite element method optimizations were performed to find the optimal mass distribution of permanent magnets on the frontal area of the outer rotor in the axial flux rotary converter unit. The optimization involved the permanent magnets’ material, shape, and thickness in order to achieve maximal efficiency of the entire unit while leaving its nominal output power and speed unaffected. The results show an increase in the overall theoretical efficiency of the outer rotor unit from 90.2% to 94.4% following the optimization.

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“…According to the total harmonic distortion rate of the air‐gap flux density, the calculation formula is 13 :

THD = \frac{\sqrt{\frac{1}{T} \int_{f} {([], \sum_{n = 2}^{\infty} B_{gn} \sin ((), italicnωt + α_{n}))}^{2} dt}}{\sqrt{\frac{1}{T} \int_{f} {([], B_{1} \sin ((), italicnωt + α_{1}))}^{2} dt}} \times 100 %

where B g is the amplitude of the n order harmonic air gap flux density, B 1 is the amplitude of the air gap flux density fundamental content.…”

Section: New Rotor Structure Model and Air Gap Flux Density Distributionmentioning

confidence: 99%

Influence of rotor magnetic circuit structure on eddy current loss of high voltage line‐start permanent magnet synchronous motor

Song

Wang

et al. 2020

Int Trans Electr Energ Syst

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Study on the Influence of Different Rotor Structures on the Axial-Radial Flux Type Synchronous Machine

Cited by 28 publications

References 25 publications

The Optimization Design of Short-Term High-Overload Permanent Magnet Motors Considering the Nonlinear Saturation

The Optimization Design of Short-Term High-Overload Permanent Magnet Motors Considering the Nonlinear Saturation

Optimization of Permanent Magnet Parameters in Axial Flux Rotary Converter for HEV Drive

Influence of rotor magnetic circuit structure on eddy current loss of high voltage line‐start permanent magnet synchronous motor

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