Magneto-Electric Coupling Network Model for Reduction of PM Eddy Current Loss in Flux-Switching Permanent Magnet Machine

Cao, Donghui; Zhao, Wenxiang; Liu, Tong; Wáng, Yì

doi:10.1109/tie.2021.3055169

Cited by 12 publications

(7 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With larger speeds, the impact of time harmonics on the eddy current losses aggravates [12,13,18]. Further, due to the physical limitation of solid-state switching devices and the switching losses considerations, the switching frequency cannot be very high [19,20].…”

Section: Profiling the Eddy Current Losses Variations Of High-speed P...mentioning

confidence: 99%

Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-In Hybrid Electric Vehicles

Huang

Tang

Golovanov

et al. 2022

IEEE Trans. Transp. Electrific.

View full text Add to dashboard Cite

High-speed permanent magnet (PM) machines have been recognized as a popular choice for plug-in hybrid electric vehicles (PHEVs). Although high-speed operation can enhance the machine power density, more rotor eddy current losses can be expected. Those losses dominantly result from the current harmonics that may vary during the vehicle driving cycles. Therefore, it is crucial to profile the eddy current losses variations, thus identifying the worst case. To achieve this objective, a new indicator, namely the frequency-weighted harmonics distortion (FWTH), is defined correlating with eddy current losses in this paper. Profiling eddy current losses variations by FWTH relieves the computational burden seen in the finite element analysis (FEA) as its derivation simply governs all the current harmonics. Various machine and converter operation conditions are covered in the study. The strong correlations between the addressed FWTH factor and the eddy current losses have been validated from the FEA, and then the experimental results on a 110krpm, 35kW PM machine served in PHEVs. The effectiveness of using FWTH to profile the eddy current losses variations during driving cycles has been proven, where the worst eddy current case has been identified for the tested machine.

show abstract

Section: Profiling the Eddy Current Losses Variations Of High-speed P...mentioning

confidence: 99%

Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-In Hybrid Electric Vehicles

Huang

Tang

Golovanov

et al. 2022

IEEE Trans. Transp. Electrific.

View full text Add to dashboard Cite

show abstract

“…In this case, the hysteresis model is taken into account after each stable solution of the equation system of the field distribution. The equivalent reluctance network method is beneficial to introduce dependencies approximating hysteresis changes into equations of the magnetic field distribution [46,51]. This method is based on the Maxwell equations in integral form, and consequently, the components of the field strength and flux density, and not their derivatives, are unknowns in these equations.…”

Section: Application Notesmentioning

confidence: 99%

“…Some magnetic hysteresis models refer to the so-called dynamic hysteresis loop, which considers the effects of eddy currents on changes in flux density. However, in many proposals, eddy currents are considered using separate differential equations [45,46].…”

Section: Introductionmentioning

confidence: 99%

Approximation of Hysteresis Changes in Electrical Steel Sheets

2021

View full text Add to dashboard Cite

This paper describes a simple method of approximating hysteresis changes in electrical steel sheets. This method is based on assumptions that flux density or field strength changes are a sum or a difference of functions that describe one curve of the limiting hysteresis loop and a certain ‘transient’ component. Appropriate formulas that present the flux density as functions of the field strength and those that present inverse dependencies are proposed. An application of this approximation requires knowledge of the measured limiting hysteresis loop and a few minor loops. Algorithms for determining changes in the flux density or field strength are proposed and discussed. The correctness of the proposed approximation of hysteresis changes was verified through a comparison of measured hysteresis loops with the loops calculated for several different excitations of the magnetic field occurring in dynamo and transformer steel sheets. Additionally, an example of the application of the proposed approximation of hysteresis changes is discussed in the paper. The proposed approximation of hysteresis changes is recommended for numerical calculations of the magnetic field distribution in dynamo and transformer steel sheets.

show abstract

“…clearer physical principle. Some analytical methods have been proposed, including the separation variable method [11], the conformal mapping model [12]- [15], the magnetic equivalent circuit (MEC) method [16], relative permeance method [17], and subdomain model method [18]. In [11], the separation variable method was applied to brushless permanent magnet DC motors.…”

mentioning

confidence: 99%

“…Although the MEC method can predict nonlinear magnetic field distribution, it has the disadvantage of complex calculations and the magnetic network structure varies with rotor position. In [17], a doubly-salient relative permeance method was presented to consider the slotting effect of the stator and rotor. The Cater factor and the complex relative permeance were adopted to compensate for the magnetic density with slotting considered.…”

mentioning

confidence: 99%

Modeling of Fault-tolerant Flux-switching Permanent-magnet Machines for Predicting Magnetic and Armature Reaction Fields

Fang

Zhao

2022

Trans. Electr. Mach. Syst.

Self Cite

View full text Add to dashboard Cite

Magneto-Electric Coupling Network Model for Reduction of PM Eddy Current Loss in Flux-Switching Permanent Magnet Machine

Cited by 12 publications

References 32 publications

Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-In Hybrid Electric Vehicles

Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-In Hybrid Electric Vehicles

Approximation of Hysteresis Changes in Electrical Steel Sheets

Modeling of Fault-tolerant Flux-switching Permanent-magnet Machines for Predicting Magnetic and Armature Reaction Fields

Contact Info

Product

Resources

About