Performance Analysis of Suspension Force and Torque in an IBPMSM With V-Shaped PMs for Flywheel Batteries

Su, Bokai; Sun, Xiaodong; Lei, Gang; Yang, Zebin; Zhu, Jun; Guo, Youguang; Diao, Kaikai

doi:10.1109/tmag.2018.2827103

Cited by 95 publications

(37 citation statements)

References 12 publications

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“…The SW u and SW w mean the (k)th and (k + 1)th of seven kinds of switching state: SW 1 , SW 2 , SW 3 , SW 4 , SW 5 , SW 6 and SW 7 ; and the SW r and SW t mean the (k)th and (k + 1)th of seven kinds of switching state: SW 8 , SW 9 , SW 10 , SW 11 , SW 12 , SW 13 and SW 14 . Substituting equations (5) and (6) into equation (4), we can get as follows…”

Section: Smfpcc Methodsmentioning

confidence: 99%

“…The influence factors of cogging torque and torque ripple are numerous, such as machine structure, stator and rotor materials, magnetic materials, magnetic structure, and so forth. Generally, cogging torque could effectively be reduced by improved design of the PMEMs to decrease stator reluctance and adjust magnetic flux distribution of air gaps, 4 such as pole-pair number or pole-shaped design 5,6 and stator skew slot design, 2 and then torque ripple could be minimized by cogging torque reduction. The permanent magnet (PM) eccentric shape design and the stator teeth shape design were efficient and effective methods in adopting PM and stator teeth geometry structure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Low cogging torque design and simplified model-free predictive current control for radial-flux dual three-phase permanent magnet electric machines

Lai

Chen

et al. 2019

Advances in Mechanical Engineering

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This study presents two improved designs of eccentric-shaped permanent magnets and teeth-shaped stators in radial-flux dual three-phase permanent magnet electric machines to reduce cogging torque and torque ripple. The finite element analysis (ANSYS Electromagnetics) has been adopted in simulation, and real radial-flux dual three-phase permanent magnet electric machines have been fabricated in experiment to verify the study. Using the radial-flux dual three-phase permanent magnet electric machines in electric machine systems can improve the reliability and obtain higher output torque. In electrical drives and control, a simplified model-free predictive current control method has been proposed and implemented to drive the radial-flux dual three-phase permanent magnet electric machines, and the control law has been achieved by a TMS320F28377S microcontroller of Texas Instruments. The simplified model-free predictive current control method is senseless to parameter variations and back electromotive force of the permanent magnet electric machines, and only needs current sensors to detect six-phase current. The optimal one has been chosen by 14 various switching modes, which has the minimum cost function, and then the converter can be directly driven and controlled in the next sampling period. The features of the simplified model-free predictive current control method can reduce the algorithm calculation and avoid the defect of conventional model-based predictive current control scheme. A proportional-integral speed controller has also been designed to achieve the speed response of the fixed-speed tracking effect. Finally, the feasibility and effectiveness of the proposed simplified model-free predictive current control method for the dual three-phase permanent magnet electric machines can be verified in the experimental and quantitative results.

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Section: Smfpcc Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low cogging torque design and simplified model-free predictive current control for radial-flux dual three-phase permanent magnet electric machines

Lai

Chen

et al. 2019

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…This feature has made PMVMs a promising successor in direct-drive applications, such as electric vehicles (EVs) [2]. EVs are environmentally friendly and thus a considerable amount of research has been conducted to improve the equipment used in EVs [3]- [5].…”

Section: Introductionmentioning

confidence: 99%

Wide-Speed Range Operation of PM Vernier Machines Using Wye and Wye-Delta Winding Configurations

2020

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This paper proposes two permanent magnet vernier machines (PMVM) operation modes, for wide-speed and high efficiency operation. In mode-1, the machine operates as a conventional PMVM with a wye connected stator winding mode. In mode-2, the machine stator winding is switched to a wye-delta winding mode. Contrary to the existing dual-inverter PMVM topology with two additional bidirectional thyristor switches, the proposed topology utilizes a single inverter with six additional bidirectional thyristor switches to change mode. A theoretical discussion of the proposed idea is further verified via finite element analysis (FEA) simulations. The basic electromagnetic characteristics, such as the flux linkage, back electromotive force, torque, and phase voltages of the machine are investigated using wye and wye-delta stator winding configurations, and subsequently, compared with the existing topology that used a dualinverter PMVM. The FEA results show that the proposed PMVM has low overall losses, consequently resulting in improved efficiency compared to the existing topology. The speed increases by almost 9 times using the proposed single-inverter PMVM. Transient analysis using FEA is also conducted in this paper. INDEX TERMS High-efficiency, permanent magnet vernier machine, wide-speed range, wye-delta mode switching.

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“…Permanent magnet synchronous machines (PMSMs) are widely used in electric vehicles [1], [2], renewable energy generation, flywheel energy storage systems [3], [4], industrial drive systems and so on. Large PMSMs have broad application prospects in wind turbine generators, electric shipboard propulsion motors, mining equipment motors, etc.…”

Section: Introductionmentioning

confidence: 99%

Research on the Airflow and Thermal Performance in a Large Forced Air-Cooled Permanent Magnet Synchronous Machine

Tong

Tang

2019

IEEE Access

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In this paper, the airflow and temperature distribution characteristics of a 1.65MW permanent magnet synchronous machine (PMSM) adopting a totally enclosed self-circulation (TESC) axial ventilation system (AVS) are studied by numerical methods. Base on the 3-D finite volume method, the ventilation performances of the PMSM with different ventilation hole numbers on the frame and stator axial ventilation duct heights are compared to determine the optimal ventilation hole number and stator axial ventilation duct height. Then, based on the 3-D finite element method (FEM), the thermal sensitivity analysis is performed by considering the variations of the mesh and thermal conductivity of the winding insulation, and the mesh and size of the assembling clearance. The results can be benefit for identifying the most important factors affecting the accuracy of 3-D FEM thermal calculation of PMSMs. The temperature distribution of the 1.65MW PMSM with the TESC AVS is obtained in the conditions of the optimal ventilation system. At last, a 1.65MW PMSM prototype with the presented TESC AVS is developed according to the airflow and temperature calculation results, and the temperature rise test performed on the prototype validates the accuracy of the simulation results.

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Performance Analysis of Suspension Force and Torque in an IBPMSM With V-Shaped PMs for Flywheel Batteries

Cited by 95 publications

References 12 publications

Low cogging torque design and simplified model-free predictive current control for radial-flux dual three-phase permanent magnet electric machines

Low cogging torque design and simplified model-free predictive current control for radial-flux dual three-phase permanent magnet electric machines

Wide-Speed Range Operation of PM Vernier Machines Using Wye and Wye-Delta Winding Configurations

Research on the Airflow and Thermal Performance in a Large Forced Air-Cooled Permanent Magnet Synchronous Machine

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