Influence of magnetic load on can loss and performance in canned permanent magnet synchronous machines

Abstract

The rotating magnetic field of the air gap in the canned permanent magnet synchronous motor (CPMSM) cuts the stationary can sleeve, which causes can loss and reduces the drive-system efficiency. At present, the researches on suppressing can loss and improving the CPMSM efficiency has encountered a bottleneck. In this paper, the influence of magnetic load on the can loss and performance of the CPMSM is comprehensively investigated by controlling the current angle in the finite element model. It is found that the can loss decreases, and the CPMSM efficiency increases gradually with the decline of magnetic load. In addition, a parameter called the forced energy index (FEI) that can reflect the comprehensive performance of the CPMSM is defined. The results shows that the FEI and power factor of the CPMSM are optimal when the zero d-axis current control is adopted. Finally, a PMSM prototype is manufactured, and the load experiment was carried out to verify the effectiveness of the given research.

Keywords

Can loss can material CPMSM finite element model

Get full access to this article

View all access options for this article.

References

Feng

, et al. Optimization control of canned electric valve permanent magnet synchronous motor. Electronics 2023; 12: 2433–2442.

Sun

, et al. Dynamic characteristics modelling and analysis for dry screw vacuum pumps. Vacuum 2022; 198: 110868.

Zhang

, et al. Effect of time harmonic current considering load condition on performance of canned induction motor. Int J Appl Electromagn Mech 2021; 66: 369–385.

Hou

, et al. A novel method for obtaining can loss of canned permanent magnet synchronous motor under non-sinusoidal excitation. J Electr Eng Technol 2024; 19: 475–483.

Tian

, et al. A magnetic network model and harmonic analysis of a canned switched reluctance machine. IEEE Trans Magn 2022; 58: 1–8.

Gao

Wang

Deng

, et al. Loss calculation, analysis and separation method of 550000 r/min ultra-high-speed Permanent Magnet Motor. IEEE Trans Ind Electron 2022; 70: 3671–3481.

Zhao

Eldeeb

Zhan

. Robust electromagnetic design of double-canned IM for submergible rim driven thrusters to reduce losses and vibration. IEEE Trans Energy Convers 2020; 35: 2045–2055.

Chen

, et al. Synergistic optimization design method to improve the overload capacity and efficiency of canned permanent magnet synchronous motor for vacuum pump. Electronics 2023; 12: 4631–4640.

Burkhardt

Huth

Urschel

. Eddy current losses in PM canned motors.

The XIX International Conference on Electrical Machines-ICEM,

2010: 1–7.

10.

Zhuang

Tian

. Modeling and thermal analysis of a canned permanent magnet machine with a novel network model. Int J Appl Electromagn Mech 2021; 65: 467–485.

11.

Gao

Liu

Niu

. Analytical model for no-load magnetic field, can losses, and temperature of permanent magnet canned motor. IEEE Access 2023; 11: 74816–74827.

12.

Chu

. Electromagnetic shielding analysis of a canned permanent magnet motor. IEEE Trans Ind Electron 2019; 67: 8123–8130.

13.

Gong

Deng

. Design and optimization of a high-torque-density low-torque-ripple vernier machine using ferrite magnets for direct-drive applications. IEEE Trans Ind Electron 2021; 69: 5421–5431.

14.

Zhurov

Bayda

Florentsev

. Field-oriented control of the induction motor as part of the shunting locomotive power train considering core losses and magnetic load. International Workshop on Electric Drives (IWED) 2022: 1–6.

15.

Zhao

. Analysis of rotor losses in permanent magnet vernier machines. IEEE Trans Ind Electron 2021; 69: 1224–1234.

16.

Chen

Wang

Shang

, et al. Finite element analysis of axial flux permanent magnetic hysteresis dampers based on vector jiles-atherton model. IEEE Trans Energy Convers 2022; 37: 2472–2481.

17.

Yin

Wang

, et al. PMSM Torque ripple minimization based on novel low carrier ratio PWM technique. IEEE Trans Power Electron 2022; 37: 11071–11084.

18.

Zhu

Liu

, et al. Cooling system design of a high-speed PMSM based on a coupled fluidic–thermal model. IEEE Trans Appl Superconductivity 2019; 29: 1–5.

19.

Jing

Tang

Wang

, et al. Performance analysis of magnetically geared permanent magnet brushless motor for hybrid electric vehicles. IEEE Trans Transp Electr 2022; 8: 2874–2883.

20.

Candelo-Zuluaga

Riba

Garcia

. PMSM Parameter estimation for sensorless FOC based on differential power factor. IEEE Trans Instrum Meas2021: 1–12.

21.

Wang

, et al. Analysis of the influence of parameter condition on whole load power factor and efficiency of line start permanent magnet assisted synchronous reluctance motor. Energies 2022; 15: 3866.