2D and 3D Modeling of Magnet Eddy Currents in Inverter-Fed Permanent Magnet Machines

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00389581" target="_blank" >RIV/68407700:21230/25:00389581 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/TEC.2025.3533426" target="_blank" >https://doi.org/10.1109/TEC.2025.3533426</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TEC.2025.3533426" target="_blank" >10.1109/TEC.2025.3533426</a>

Jazyk výsledku

angličtina

Název v původním jazyce

2D and 3D Modeling of Magnet Eddy Currents in Inverter-Fed Permanent Magnet Machines

Popis výsledku v původním jazyce

This paper presents new 2D and 3D methods for analytical modeling of magnet eddy currents in inverter-fed surface-mounted permanent magnet machines. The time harmonics of the inverter current cause the induced eddy currents and losses in the surface-mounted magnets. The modeling of eddy currents is performed with and without consideration of the reaction fields of eddy currents in arc-shaped magnets. Neglecting reaction fields is used to calculate a new end effect factor to consider the third dimension's effect on the eddy current losses in the 2D calculation. Closed-form equations for magnet losses are extracted using new 2D and 3D analytical methods for fast calculations of magnet eddy current losses. The Fourier series approach is utilized to solve differential equations in 3D modeling. The 2D magnet losses equation without the third-dimension effect is separated in the 3D magnet losses equation, which helps to clearly show the third-dimension effect. The analytical results are compared with 3D finite element calculations to evaluate the accuracy of analytically calculated eddy current losses. 2D and 3D magnet loss results are compared to evaluate the third-dimension effect on magnet losses. Two different surface-mounted permanent magnet machines are considered to validate analytical methods compared to finite element results.

Název v anglickém jazyce

2D and 3D Modeling of Magnet Eddy Currents in Inverter-Fed Permanent Magnet Machines

Popis výsledku anglicky

This paper presents new 2D and 3D methods for analytical modeling of magnet eddy currents in inverter-fed surface-mounted permanent magnet machines. The time harmonics of the inverter current cause the induced eddy currents and losses in the surface-mounted magnets. The modeling of eddy currents is performed with and without consideration of the reaction fields of eddy currents in arc-shaped magnets. Neglecting reaction fields is used to calculate a new end effect factor to consider the third dimension's effect on the eddy current losses in the 2D calculation. Closed-form equations for magnet losses are extracted using new 2D and 3D analytical methods for fast calculations of magnet eddy current losses. The Fourier series approach is utilized to solve differential equations in 3D modeling. The 2D magnet losses equation without the third-dimension effect is separated in the 3D magnet losses equation, which helps to clearly show the third-dimension effect. The analytical results are compared with 3D finite element calculations to evaluate the accuracy of analytically calculated eddy current losses. 2D and 3D magnet loss results are compared to evaluate the third-dimension effect on magnet losses. Two different surface-mounted permanent magnet machines are considered to validate analytical methods compared to finite element results.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Transactions on Energy Conversion

ISSN

0885-8969

e-ISSN

1558-0059

Svazek periodika

40

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

1959-1969

Kód UT WoS článku

001563971900036

EID výsledku v databázi Scopus

2-s2.0-85216627056