Abstract
This paper deals with theoretical analysis and design of permanent magnet (PM) synchronous motors (PMSMs) with minimized cogging force. Recently, many optimal designs for the PMSMs have been done by finite element (FE) analysis, but such analysis generally is time consuming. In this study, the equation of magnetic flux lines existing between PMs and iron cores is expressed geometrically and the cogging force is calculated theoretically without FE analysis. The form of equation is assumed to be the second-order polynomial and the virtual core is used to express the cogging force in analytical model. The cogging force can be calculated by applying the solved flux line equation and the flux density equation to the Lorentz force equation by using the Maxwell stress tensor. The theoretical analysis of minimized cogging force is applied to several prototypes such as synchronous PM planar motor (SPMPM), 2-DOF PMSM with screw motion, and axial flux PM (AFPM) brushless dc motor in this paper, and the analytical results are validated by FE analyses and experiments.
| Original language | English |
|---|---|
| Article number | 5257209 |
| Pages (from-to) | 4692-4695 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 45 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2009 Oct 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
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Theoretical analysis and its applications of a pm synchronous motor with minimized cogging force. / Choi, Jong Hyun; Baek, Yoon Su.
In: IEEE Transactions on Magnetics, Vol. 45, No. 10, 5257209, 01.10.2009, p. 4692-4695.Research output: Contribution to journal › Article
TY - JOUR
T1 - Theoretical analysis and its applications of a pm synchronous motor with minimized cogging force
AU - Choi, Jong Hyun
AU - Baek, Yoon Su
PY - 2009/10/1
Y1 - 2009/10/1
N2 - This paper deals with theoretical analysis and design of permanent magnet (PM) synchronous motors (PMSMs) with minimized cogging force. Recently, many optimal designs for the PMSMs have been done by finite element (FE) analysis, but such analysis generally is time consuming. In this study, the equation of magnetic flux lines existing between PMs and iron cores is expressed geometrically and the cogging force is calculated theoretically without FE analysis. The form of equation is assumed to be the second-order polynomial and the virtual core is used to express the cogging force in analytical model. The cogging force can be calculated by applying the solved flux line equation and the flux density equation to the Lorentz force equation by using the Maxwell stress tensor. The theoretical analysis of minimized cogging force is applied to several prototypes such as synchronous PM planar motor (SPMPM), 2-DOF PMSM with screw motion, and axial flux PM (AFPM) brushless dc motor in this paper, and the analytical results are validated by FE analyses and experiments.
AB - This paper deals with theoretical analysis and design of permanent magnet (PM) synchronous motors (PMSMs) with minimized cogging force. Recently, many optimal designs for the PMSMs have been done by finite element (FE) analysis, but such analysis generally is time consuming. In this study, the equation of magnetic flux lines existing between PMs and iron cores is expressed geometrically and the cogging force is calculated theoretically without FE analysis. The form of equation is assumed to be the second-order polynomial and the virtual core is used to express the cogging force in analytical model. The cogging force can be calculated by applying the solved flux line equation and the flux density equation to the Lorentz force equation by using the Maxwell stress tensor. The theoretical analysis of minimized cogging force is applied to several prototypes such as synchronous PM planar motor (SPMPM), 2-DOF PMSM with screw motion, and axial flux PM (AFPM) brushless dc motor in this paper, and the analytical results are validated by FE analyses and experiments.
UR - http://www.scopus.com/inward/record.url?scp=70350600092&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70350600092&partnerID=8YFLogxK
U2 - 10.1109/TMAG.2009.2023428
DO - 10.1109/TMAG.2009.2023428
M3 - Article
AN - SCOPUS:70350600092
VL - 45
SP - 4692
EP - 4695
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 10
M1 - 5257209
ER -