• Title, Summary, Keyword: Permanent magnet synchronous motor

Search Result 1,182, Processing Time 0.05 seconds

Fault Diagnosis Method of Permanent Magnet Synchronous Motor for Electrical Vehicle

  • Yoo, Jin-Hyung;Jung, Tae-Uk
    • Journal of Magnetics
    • /
    • v.21 no.3
    • /
    • pp.413-420
    • /
    • 2016
  • The permanent magnet synchronous motor has high efficiency driving performance and high power density output characteristics compared with other motors. In addition, it has good regenerative operation characteristics during braking and deceleration driving condition. For this reason, permanent magnet synchronous motor is generally applied as a power train motor for electrical vehicle. In permanent magnet synchronous motor, the most probable causes of fault are demagnetization of rotor's permanent magnet and short of stator winding turn. Therefore, the demagnetization fault of permanent magnet and turn fault of stator winding should be detected quickly to reduce the risk of accident and to prevent the progress of breakdown of power train system. In this paper, the fault diagnosis method using high frequency low voltage injection was suggested to diagnose the demagnetization fault of rotor permanent magnet and the turn fault of stator winding. The proposed fault diagnosis method can be used to check the faults of permanent magnet synchronous motor during system check-up process at vehicle starting and idling stop mode. The feasibility and usefulness of the proposed method were verified by the finite element analysis.

Moving Mesh Technique for Dynamic Characteristics Analysis of Permanent Magnet Linear Synchronous (영구 자석형 선형 동기전동기의 동특성 해석을 위한 이동 메쉬 기법)

  • Woo, Kyung-Il;Kwon, Byung-Il
    • The Transactions of the Korean Institute of Electrical Engineers B
    • /
    • v.50 no.2
    • /
    • pp.53-58
    • /
    • 2001
  • This paper describes a moving mesh technique for dynamic characteristics analysis of permanent magnet linear synchronous motor with the secondary aluminium sheet. The moving mesh technique applied to the linear induction motor can be used to analyze the linear synchronous motor with the rectangular permanent magnet. But in case of the permanent magnet with taper, the shape of the permanent magnet is presented. The time-stepped finite element method is used for the dynamic characteristics simulation of the permanent magnet linear synchronous motor, The results of application example(hysteresis current controlled inverter fed control) such as thrust, current and flux plots are shown.

  • PDF

The Application of Classical Direct Torque and Flux Control (DTFC) for Line-Start Permanent Magnet Synchronous and its Comparison with Permanent Magnet Synchronous Motor

  • Soreshjani, Mohsen Hosseinzadeh;Heidari, Reza;Ghafari, Ahmad
    • Journal of Electrical Engineering and Technology
    • /
    • v.9 no.6
    • /
    • pp.1954-1959
    • /
    • 2014
  • This paper attempts to design and present a comparison of classical Direct Torque Flux Control (DTFC) for Line-Start Permanent Magnet Synchronous Motor (LSPMSM) and its equal Permanent Magnet Synchronous Motor (PMSM). In order to present an in-depth analysis, both motors for DTFC Voltage Source Inverter (VSI)-fed in the same situations of different conditions are simulated and tested. The advantages of the proposed method for LSPMSM over the PMSM are discussed and analyzed.

Direct Thrust Control of Permanent Magnet Type Linear Synchronous Motor by using Digital Signal Processor (DSP를 이용한 영구 자석형 선형 동기전동기의 직접 추력 제어)

  • U, Gyeong-Il;Kim, Deok-Jin;Gwon, Byeong-Il
    • The Transactions of the Korean Institute of Electrical Engineers B
    • /
    • v.49 no.8
    • /
    • pp.514-521
    • /
    • 2000
  • This paper presents a direct thrust control scheme for permanent magnet linear synchronous motor(PMLSM) by using digital signal processor(DSP). And a simulation method for the direct thrust control of a permanent magnet linear synchronous motor using the equivalent circuit is presented. The detent force that was obtained by cubic spline method is considered in the simulation. Thrust correction coefficient is utilized to estimate actual thrust on the direct thrust control, which considers the longitudinal end effect due to the finite core length of the permanent magnet linear synchronous motor. The motor self inductance, the initial flux linkage by the permanent magnet is calculated in advance by the finite element analysis, and then the direct control simulation is carried out. As the results, thrust, current and speed are shwon.

  • PDF

Characteristic Analysis on the Permanent Magnet Synchronous Motor with Segmented Phase Modular Stators (고정자 분할에 따른 영구자석 동기전동기의 특성 해석)

  • Lee, Seung-Han;Cho, Han-Wook
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.64 no.12
    • /
    • pp.1686-1694
    • /
    • 2015
  • Stator tooth segmentation and back-iron segmentation is key solution to easing the burden of manufacturing process of permanent magnet synchronous motor. The purpose of this paper is the design and characteristic analysis of permanent magnet synchronous motor having the segmented phase modular stators. Using by two-dimensional finite element method, the static/no-load characteristic analysis of the permanent magnet synchronous motor is performed. The analysis has been performed considering the additional air gaps between stator modules. The analysis results were experimentally verified, and the validity of the proposed analysis method and feasibility of the machine was confirmed.

Analysis of Detent Force Reduction Method in a Permanent Magnet Linear Synchronous Motor

  • Jang, Seok-Myeong;Yoon, In-Ki;Lee, Sung-Ho;Kang, Do-Hyun;Jeong, Yeon-Ho
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
    • /
    • v.12B no.1
    • /
    • pp.1-6
    • /
    • 2002
  • The severe problem in improving the positioning precision of a permanent magnet linear synchronous motor (PMLSM) is the large detent farce caused by the permanent magnet arrangement. It is generally an undesired effect that contributes to the torque ripple, vibration and noise of machine. The detent force is arisen from the difference of the position of a permanent magnet end and a tooth position. In this paper, the four methods to reduce detent force were studied and analyzed. The methods are adjusting the width of permanent magnet, varying the shape of armature teeth, relocating the permanent magnet, and adjusting the width of permanent magnet and relocating the permanent magnet at the same time. To analyze the detent farce according to flour methods, a two-dimensional Finite Element Analysis [FEA] was used and we compared with the ratio of reduction of the detent farce according to the flour methods.

The Study on the improvement of Characteristics of Permanent Magnet Synchronous Motor for Washing Machine (세탁기용 영구자석 동기전동기의 특성 향상에 관한 연구)

  • Jung, Dae-Sung
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.29 no.10
    • /
    • pp.47-53
    • /
    • 2015
  • IPMSM(Insert Permanent Magnet Synchronous Motor) is a very high degree of freedom in the design according to the permanent magnet insertion position. And the performance of IPMSM is affected a lot on barrier shape which determines the magnetic flux path from magnet. Thus the position of permanent magnet and the barrier shape has to be designed by considering both specification and operation condition. In the paper, the permanent magnet and barrier shape which is suitable for direct drive motor of washing machine has been studied. In addition, in order to verify the validity of the study, the test was evaluated by making a prototype motor.

Optimal Design for Starting -Torque of Line-Start Permanent Magnet Synchronous Motors (직립 기동 영구자석 동기전동기의 기동토크 최적화 설계)

  • Kim, Byong-Kuk;Moon, Ji-Woo;Kim, Mi-Jung;Lee, Byung-Jun;Cho, Yun-Hyun
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.56 no.8
    • /
    • pp.1390-1396
    • /
    • 2007
  • The line-start permanent magnet synchronous motor has a high efficiency and an advantage in constant speed operation regardless of the effect of load variation. However, it is difficult to predict the performance of characteristics accurately, because of the unbalanced starting torque with the initial starting position of the rotor and the generation of a break torque. In this paper the dynamic characteristics of the line-start permanent magnet synchronous motor are described and compared with those of the squirrel-cage induction motor through the simulation to find the characteristics of the permanent magnets and the rotor bars in the line-start permanent magnet synchronous motor. Finally this paper gives the comparison between the simulation results and the experimental results.

A Study on Fault Characteristic According Open Fault of Synchronous Motor (동기전동기의 개방고장에 따른 고장특성에 관한 연구)

  • Kim, Hoe-Cheon;Jung, Tae-Uk
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.26 no.11
    • /
    • pp.109-115
    • /
    • 2012
  • Recently, permanent magnet synchronous motor are applied to various applications. Because of the importance of high reliable operation in these areas, many research related to the fault detection and diagnosis of inverter system are conducted. So, a faults model for an inverter-driven permanent magnet synchronous motor is studied by using the fault current of motor according to switch open, which can be effectively used for performance evaluation of the diagnostic algorithm. And fault of the permanent magnet synchronous motor inverter drive system is divided into four types. The feasibility of the proposed method are improved by simulation and experiment.

Field Circuit Coupling Optimization Design of the Main Electromagnetic Parameters of Permanent Magnet Synchronous Motor

  • Zhou, Guang-Xu;Tang, Ren-Yuan;Lee, Dong-Hee;Ahn, Jin-Woo
    • Journal of Electrical Engineering and Technology
    • /
    • v.3 no.1
    • /
    • pp.88-93
    • /
    • 2008
  • The electromagnetic parameters of a permanent magnet synchronous motor (PMSM) such as the open load permanent magnet flux, d axis reactance $X_d$, and q axis reactance $X_q$, are most essential to the performance analysis and optimization design of the motor. Based on the numerical analysis of the 3D electromagnetic field, the three electromagnetic parameters of permanent magnet synchronous motors with U form interior rotor structures are calculated by FEA. The rules of the leakage coefficient and reactance parameters changing with the air gap length, permanent magnet magnetism length, and isolation magnetic bridge dimensions in the rotor are given. The calculated values agree well with the measured values. The FEA results are integrated with the self compiled electromagnetic design program to optimize the prototype motor. The tested performances of the prototype motor prove that the method is suitable for the optimization of motor structure.