• Title/Summary/Keyword: PMa-SynRM

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A Comparative Analysis of the Output and Losses of the PMa-SynRM (PMa-SynRM의 출력 및 손실특성 비교분석)

  • Jeong, Yun-Ho;Jung, Sang-Yong
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.836-837
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    • 2011
  • 본 논문에서는 PMa-SynRM과 IPMSM의 출력 및 손실 특성 비교분석을 수행하였다. 비교분석을 위한 모델을 선정하여 모델별 유한요소법해석을 통해 성능 및 손실특성 해석을 수행하고, 제어정수 추출을 통해 출력특성곡선을 유도하여 전동기의 각 운전영역에서의 특징을 비교분석한다.

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A study of Maximum-Power Control Simulation for PMA-SynRM (PMA-SynRM의 최대출력제어를 위한 시뮬레이션 연구)

  • Pyun, Kyung-Bum;Lee, Ju
    • Proceedings of the KIEE Conference
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    • 2009.04b
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    • pp.103-105
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    • 2009
  • This paper presents the maximum-power control simulation for PMA-SynRM. For maximum power, the maximum torque / current control method is conducted in constant-torque range and flux-weakening control method is conducted in constant-power range. For considering the nonlinear characteristics of inductance, machine constant is determined by FEM. Finally, experiment is conducted to calculate the efficiency.

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Study of Permanent Magnet Optimum Design on the PMa-SynRM (PMa-SynRM에서 영구자석 배치에 따른 최적 설계 연구)

  • Kim, Su-Yong;Kim, Won-Ho;Im, Jong-Bin;Lee, Ki-Deok;Ryu, Gwang-Hyeon;Lee, Ju
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.768_769
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    • 2009
  • Average torque of PMa-SynRM(Permanent Magnet-assisted Synchronous Reluctance Motor) is changed by magnet form inserted to the barrier. Because the magnet form influences to the magnet-torque and reluctance torque. Therefore, this paper present a suitable permanent magnet form design for maximum torque when the magnet quantites are always fixed. And each motor characteristic such as average torque, torque ripple, cogging torque and back-EMF are analyzed by FEM(Finite Element Method) for optimal design..

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MRAS Sensorless Control using the Back-EMF of PMA-SynRM Motor (PMA-SynRM의 역기전력을 이용한 MRAS 센서리스 제어)

  • Joo, Kyoung-Jin;Oh, Ye-Jun;Lee, Hyun-Gi;Cho, Su-Yeon;Lee, Ju
    • Proceedings of the KIEE Conference
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    • 2015.07a
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    • pp.647-648
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    • 2015
  • 최근 최저효율제를 대비한 프리미엄급 고효율 전동기의 필요성이 대두됨에 따라 유도전동기를 대체할 수 있는 고효율 전동기로써 영구자석 매입형 동기 릴럭턴스 모터(PMA-SynRM)가 각광받고 있다. 하지만 모터의 속도와 토크를 제어하기 위해 회전자 속도와 위치 정보를 측정할 수 있는 센서가 필요하고, 이 때 센서 설치의 공간적 문제, 센서의 유지/보수 및 시스템의 추가 비용 발생 등 많은 문제점들이 발생한다. 따라서 센서를 제거하기 위한 센서리스 위치 및 속도 제어에 관한 연구가 폭 넓게 진행되고 있다. 하지만 모터를 운전함에 따라 저항이나 역기전력 상수, 인덕턴스 등의 제정수의 변동이 발생하게 되고 센서리스 제어 시 이러한 변동에 의해서 추정 속도 및 위치에 오차가 발생하게 된다. 본 논문에서는 이러한 오차의 보상을 위해 MRAS(Model Reference Adaptive System) 방식을 적용한 센서리스 제어를 제안한다.

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Optimal Design of Five-Phase Permanent Magnet Assisted Synchronous Reluctance Motor for High Speed Railroad Traction System (고속철도 추진용 5상 영구자석 저감형 동기전동기의 최적설계)

  • Baek, Jeihoon;Kim, Myung Yong;Yi, Kyung-Pyo
    • Journal of the Korean Society for Railway
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    • v.20 no.5
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    • pp.588-594
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    • 2017
  • Permanent magnet assisted synchronous reluctance motors (PMa-SynRM) show higher efficiency and power density compared to conventional induction motors for high speed railroad traction systems. Furthermore, 5-phase PMa-SynRMs have lower torque ripple and higher power density than 3-phase systems. Therefore, the 5-phase PMa-SynRM is suitable for high-speed railway traction systems. In this study, 3kw 3-phase and 5-phase PMa-SynRM models were optimized using lumped parameter model and genetic algorithm, and their characteristics were compared. The optimized models are fine-tuned using finite element analysis. The final models of the 3-phase and 5-phase PMa-SynRMs are fabricated and tested to verify the analysis results.

Study of Permanent Magnet Optimum Design on the Permanent Magnet assisted-Synchronous Reluctance Motor

  • Lee, Hyung-Woo
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.23 no.11
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    • pp.28-33
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    • 2009
  • Average torque of PMa-SynRM(Permanent Magnet-assisted Synchronous Reluctance Motor) is changed by magnet form inserted to the barrier. Because the magnet structure inserted to the barrier influences to the magnet-torque and reluctance torque. Therefore, this paper present a suitable permanent magnet form design for maximum torque when the magnet quantites are always fixed. And each motor characteristic such as average torque, torque ripple, cogging torque and back-EMF are analyzed by FEM(Finite Element Method) for optimal design.

Numerical Analysis on Iron Loss and PM Loss of Permanent Magnet Synchronous Motor Considering the Carrier Harmonics

  • Lee, Dongsu;Kim, Yong-Jae;Jung, Sang-Yong
    • Journal of Magnetics
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    • v.18 no.2
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    • pp.216-219
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    • 2013
  • In this paper, the influence of inverter switching harmonics on iron loss and PM loss of Permanent Magnet Synchronous Motor (PMSM) is numerically investigated by Finite Element Method (FEM). In particular, nonlinear FEM is applied for a multi-layered PM Synchronous Motors (PMSMs), Interior buried PMSM (IPMSM) and PM assisted Synchronous Reluctance Motor (PMa-SynRM), which are adoptively designed and compared for Electric Vehicle (EV) propulsion. In particular, iron loss and PM eddy-current loss under the real current waveform including the carrier harmonics from inverter switching are numerically analyzed with nonlinear FEM by considering the skewed stator structure employed for minimizing spatial harmonics.

A Study on Analysis Method of Torque and Torque Ripple according to Load Angle for Permanent Magnet Motor (영구자석 전동기의 부하각에 따른 토크 및 토크리플 분석을 위한 해석법 연구)

  • Kim, Ki-Chan;Lee, Ju
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.621_622
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    • 2009
  • This paper presents an efficient calculation method for torque and torque ripple of a permanent magnet synchronous motor by using superposing method of load angle torque curves from finite element method. The load angle range having minimum torque ripple as well as average torque according to load angle can be induced by proposed method. We selected a permanent magnet assisted synchronous reluctance motor (PMa-SynRM) as a study model because of its high torque ripple. We performed experiment of torque ripple and average torque according to load angle for the verification of proposed method in the paper.