• Title/Summary/Keyword: Line-Start Permanent Magnet Synchronous Motor

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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
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    • v.56 no.8
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    • pp.1390-1396
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    • 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.

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
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    • v.9 no.6
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    • pp.1954-1959
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    • 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.

Dynamic Characteristic Analysis of Line-Start Permanent Magnet Synchronous Motor (직립 기동 영구자석 동기전동기의 동특성 해석)

  • Kim, Byong-Kuk;Jo, Won-Yung;Lee, In-Jae;Moon, Ji-Woo;Kim, Mi-Jung;Lim, Seong-Hwan;Cho, Yun-Hyun
    • Proceedings of the KIEE Conference
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    • 2006.04b
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    • pp.185-187
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    • 2006
  • 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.

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Optimal Design and Dynamic Characteristic Analysis of Line Start Permanent Magnet Synchronous Motor (직립 기동 영구자석 동기전동기의 최적설계 및 동특성 해석)

  • Kim, Do-Sun;Kim, Byong-Kuk;Lee, Byung-Jun;Cho, Youn-Hyun
    • Proceedings of the KIEE Conference
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    • 2008.04c
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    • pp.92-94
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    • 2008
  • The interest in permanent magnet synchronous motor is present in a wide area of applications, ranging from high-performance servo drive to line-start application[1]. The are mainly two reasons for this trend: first low rotor losses and second the foiling prices of high-energy magnets. In this paper the dynamic characteristic of the line-start permanent magnet synchronous motor are described and compared with those if the squirrel-cage induction motor through the simulation to find the characteristics of the permanent magnets and the rotor bar in the line-start permanent magnet synchronous motor.

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Optimal Design for Starting-Torque of Line Start Permanent Magnet Synchronous Motor (직립 기동 영구자석 동기 전동기의 기동 토크 최적화 설계)

  • Kim, Byong-Kuk;Hwang, Dong-Won;Kim, Tae-Hyun;Jo, Won-Yung;Lee, In-Jae;Han, Sung-Jin;Cho, Yun-Hyun
    • Proceedings of the KIEE Conference
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    • 2005.07b
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    • pp.930-932
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    • 2005
  • 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.

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Character Analysis for Break-Torque of Line-Start Permanent Magnet Synchronous Motors (직립 기동 영구자석 동기 전동기의 브레이크 토크 특성 해석)

  • Kim, Byung-Kuk;Kim, Tae-Hyun;Jo, Won-Yung;Lee, In-Jae;Cho, Yun-Hyun
    • Proceedings of the KIEE Conference
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    • 2005.10c
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    • pp.86-88
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    • 2005
  • 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 arc 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.

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Steady-State Characteristic Analysis of Single-Phase Line-Start Permanent Magnet Synchronous Motor (단상 영구자석형 유도동기기의 정상상태 특성해석)

  • Kang, Gyu-Hong;Nam, Hyuk;Hong, Jung-Pyo
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.52 no.2
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    • pp.53-60
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    • 2003
  • This paper deals with steady-state analysis of a single-phase line-start permanent magnet synchronous motor. In order to analyze the steady-state characteristics, the asymmetric single-phase line-start synchronous motor is converted to the symmetric two-phase synchronous motor, that is, the asymmetric magnetic field is separated from the positive and the negative symmetric components using symmetrical-component theory. The analysis method of the synchronous motor on the d-q axis coordinates is used for the positive component and the equivalent circuit of the induction motor is applied for the negative component analysis. Moreover, d-q axis inductance considering current phase angle is applied to positive component analysis for precise characteristic analysis. In order to validate the proposed analysis method, the analysis results are compared with the experimental results.

Characteristic Analysis of Single Phase Line-start Permanent Magnet Synchronous Motor Considering Circuit Parameters (단상 직립 기동형 영구자석 동기기의 회로정수에 따른 특성 해석)

  • 강규홍;홍정표
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.52 no.6
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    • pp.262-270
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    • 2003
  • In this paper, the characteristics of single-phase line-start permanent magnet synchronous motor driven by constant voltage are analyzed on d-q axis vector diagram and compared with that of current controlled motor. The coupled method of symmetrical coordinates and d-q axis voltage equation are applied to the analysis method like the analysis of single-phase induction motor. From the result of the analysis, it is seen that motors driven by constant voltage source have effects on not only the amplitude of current and torque but also current and current phase angle, so overall characteristics such as power factor and load angle are affected by circuit parameters. For precise analysis and design of single-phase line-start synchronous motor, its characteristics should be analyzed on d-q axis vector plan in consideration of the variation of circuit parameters.

A Comparison of LSPM Synchronous Motor and Induction Motor (LSPM 동기전동기와 유도전동기의 특성 비교)

  • Kim, Byong-Kuk;Jo, Won-Yung;Lee, In-Jae;Moon, Ji-Woo;Kim, Mi-Jung;Lim, Seong-Hwan;Cho, Yun-Hyun
    • Proceedings of the KIEE Conference
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    • 2006.07b
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    • pp.829-830
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    • 2006
  • 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.

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Comparison of the Single-phase Line-start Permant Magnet Motor's Transient Characteristics by Size and Position of Rotor Bar (영구자석 매입형 단상 유도 동기 전동기의 회전자 바의 크기와 위치에 따른 기동 특성 비교)

  • Kwon, S.H.;Yang, B.Y.;Kwon, B.I.;Lee, C.G.
    • Proceedings of the KIEE Conference
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    • 2003.07b
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    • pp.933-935
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    • 2003
  • The single-phase line start permanent magnet motor(LSPM) have a rotor cage bar for induction starting and permanent magnets, providing synchronous torque. So, LSPM is vary complex and difficult to analysis transient characteristics and rotor design. In this paper, F.E.M analysis about single-phase line start permanent magnet motor and compare of the single-phase line start permanent magnet synchronous motor's transient characteristics by size and position of rotor bar.

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