Design and Analysis of a Novel Permanent Magnet Homopolar Inductor Machine With Mechanical Flux Modulator for Flywheel Energy Storage System

Yang, Jiangtao; Li, Qing; Huang, Shoudao; Ye, Caiyong; Liu, Ping; Ma, Bo; Wang, Lei

doi:10.1109/tie.2021.3104583

Cited by 19 publications

(9 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The structure of the SMM-PMHIM is shown in Fig. 2(a) [6]. The PM of SMM-PMHIM is a monolithic ring, and there is a mechanical ring outside the shell for adjusting the air gap magnetic field.…”

Section: A Topologymentioning

confidence: 99%

“…To obtain the good electromagnetic performance of RMP-PMHIM, it is necessary to optimize its structure. Since the shell, stator, rotor, and armature winding of the RMP-PMHIM are the same as those of the SMM-PMHIM investigated in [6], only the structure parameters of the flux modulator are optimized in this paper. The thickness of PMs of RMP-PMHIM is consistent with that of SMM-PMHIM.…”

Section: Key Structure Parameters Optimizationmentioning

confidence: 99%

“…Nonetheless, with the continuous change of the motor speed, the PMs are constantly in contact with the stator, which may affect the strength of the PMs. For the PMHIM, a mechanical ring to realize the flexible adjustment of the air gap magnetic field was proposed in [6] (hereafter, called SMM-PMHIM). However, since the mechanical ring needs to slide on the surface of the shell, the flux weakening ability of the mechanical ring will be greatly affected by the length of the oil film air gap between it and the shell.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of a Novel Mechanically Adjusted Variable Flux Permanent Magnet Homopolar Inductor Machine with Rotating Magnetic Poles for Flywheel Energy Storage System

Lyu

Yang

et al. 2022

Trans. Electr. Mach. Syst.

Self Cite

View full text Add to dashboard Cite

Section: A Topologymentioning

confidence: 99%

Section: Key Structure Parameters Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of a Novel Mechanically Adjusted Variable Flux Permanent Magnet Homopolar Inductor Machine with Rotating Magnetic Poles for Flywheel Energy Storage System

Lyu

Yang

et al. 2022

Trans. Electr. Mach. Syst.

Self Cite

View full text Add to dashboard Cite

“…The homopolar inductor alternator (HIA) has a very simple rotor, and it has the advantage of high power density and reliability, and was successfully used in the field of high power-density pulsed power supply [4][5][6][7][8], flywheel energy storage [9][10][11][12], airborne applications [13], propulsion system of ship [14] and so on.…”

Section: Introductionmentioning

confidence: 99%

Optimization Method for Minimum Mass of Permanent Magnet Excited Hia with Air-Gap Winding

Liu¹,

Yu²,

Xie³

2023

Preprint

View full text Add to dashboard Cite

This paper proposes the optimization method for the minimum mass of permanent magnet (PM) excited homopolar inductor alternator (HIA) with air-gap winding used for high-speed driving system. The calculation results show that there is an optimal value for shell diameter and unit number of HIA to make the mass to be smallest. A 1 MW at 22000 rpm PM excited HIA is designed. The analytical results are verified by the FEM simulations. The losses, temperature rise, rotor stress and modal of the PM excited HIA are also analyzed. The calculation results show that the solid rotor eddy-current losses and the temperature rise of PM excited HIA are acceptable. Also the rotor strength is adequate, and the rotor system is a stiffness rotor, and it can safely operate. Finally, the comparison between PM excited HIA and permanent magnet rotor machine is discussed.

show abstract

“…The authors of [9] use a bearingless ac homopolar alternator for a flywheel energy storage system, which avoids significant mechanical friction, increases the motor efficiency and increases the operational lifespan. The authors of [10] use a novel permanent magnet homopolar inductor machine with a mechanical flux modulator for a flywheel energy storage system. The authors of [11] use this type of rotor for a bearingless motor, which can be driven up to an ultrahigh speed of 100,000 r/min.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Performance Evaluation of a Novel Adjustable Speed Drive with a Homopolar-Type Rotor

Guo

Liu³

et al. 2022

Mathematics

View full text Add to dashboard Cite

The use of a magnetic adjustable speed drive is a popular choice in industrial settings due to its efficient operation, vibration isolation, low maintenance, and overload protection. Most conventional magnetic adjustable speed drives use various forms of the permanent magnets (PMs). Due to the PMs, this type of machine has continuous free-wheeling losses in the form of hysteresis and induced eddy currents. In recent years, the homopolar-type rotor has been widely used in high-speed machines, superconducting machines, and in the application of flywheel energy storage. This study proposes a new application of the homopolar-type rotor. A novel adjustable speed drive with a homopolar-type rotor (HTR-ASD), which has obvious advantages (no brush, no permanent magnet, and no mechanical flux regulation device), is designed and analyzed in this study. Its speed and torque can be adjusted only by adjusting the excitation current. Firstly, in this study, the structure, operation principles, and flux-modulated mechanism of the HTR-ASD are studied. The homopolar-type rotor has a special three-dimensional magnetic circuit structure with the same pole. The 3D-FEM is usually used to calculate its parameters, which is time consuming. In this study, an analytical method is developed to solve this issue. To analytically calculate the torque characteristics, the air gap magnetic flux density, and the winding inductance parameter, the equivalent circuit and the air gap permeance are researched to simplify the analysis. Then, the key parameters of the HTR-ASD are calculated. Finally, the performance of the HTR-ASD is comparatively studied using the analytical method and finite element method, and a comparison of the results is carried out. The comparison indicates that the analytical method is in good agreement with simulation results, and that it is very helpful for designing homopolar-type rotor machines. According to the analysis, the proposed adjustable speed drive displays a great performance in relation to the operating characteristics of a flexible mechanical speed drive.

show abstract

Design and Analysis of a Novel Permanent Magnet Homopolar Inductor Machine With Mechanical Flux Modulator for Flywheel Energy Storage System

Cited by 19 publications

References 22 publications

Analysis of a Novel Mechanically Adjusted Variable Flux Permanent Magnet Homopolar Inductor Machine with Rotating Magnetic Poles for Flywheel Energy Storage System

Analysis of a Novel Mechanically Adjusted Variable Flux Permanent Magnet Homopolar Inductor Machine with Rotating Magnetic Poles for Flywheel Energy Storage System

Optimization Method for Minimum Mass of Permanent Magnet Excited Hia with Air-Gap Winding

Analysis and Performance Evaluation of a Novel Adjustable Speed Drive with a Homopolar-Type Rotor

Contact Info

Product

Resources

About