• Title/Summary/Keyword: synchronous reluctance motor

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Optimal Design of Synchronous Reluctance Motor by Loss & Efficiency Evaluations Related to Slot Number using Response Surface Methodology (반응표면법을 이용한 슬롯수 관련 손실, 효율 평가애 따른 동기형 릴럭턴스 전동기의 최적 설계)

  • Park, Seong-June;Jang, Young-Jin;Lee, Jung-Ho
    • Proceedings of the KIEE Conference
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    • 2004.10a
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    • pp.123-125
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    • 2004
  • This paper presents the application of response surface methodology (RSM) to design optimization for two types of synchronous reluctance motors (SynRMs); one has 12 slots with distributed winding, and the other has 6 slots with concentrated winding, to improve the ratio between torque ripple and average torque. The usefulness of RSM in optimization problem of SynRM is verified as compared with the results of finite element analysis. In the end, the optimized two SynRMs are compared with SynRM currently used in air-conditioning compressor in connection with torque performance and loss.

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Speed Control of High Speed Synchronous Reluctance Motor By Vector Control

  • Kim, Min-Tae;Jo, Hang-Shin;Seong, Se-Jin;Paek, Tong-Ki
    • Proceedings of the KIPE Conference
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    • 1998.10a
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    • pp.742-747
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    • 1998
  • In the High-Speed range for salient type synchronous reluctance motors, the effect of iron loss can not be negligible. In this paper, the SynRM without cage is analyzed mathematically to model and the speed control system is examined by simulation. In order to control the revolution speed, a closed-loop control with vector control and decoupling control are applied to the high-speed SynRM drives. The speed control system is analyzed to investigate the desired speed characteristics of high SynRM by simulation.

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Optimal Design of Synchronous Reluctance Motor Related to Slot Number using Response Surface Methodology (반응표면방법론을 적용한 슬롯 수에 따른 동기형 릴럭턴스 전동기의 최적 설계)

  • Park, Seong-June;Lee, Jung-Ho
    • Proceedings of the KIEE Conference
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    • 2005.04a
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    • pp.117-119
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    • 2005
  • This parer presents the application of response surface methodology (RSM) to design optimization for two types of synchronous reluctance motors (SynRMs) one has 12 slots with distributed winding, and the other has 6 slots with concentrated winding, to improve the ratio between torque ripple and average torque. The usefulness of RSM in optimization problem of SynRM is verified as compared with the results of finite element analysis. In the end, the optimized two SynRMs are compared with SynRM currently used in air-conditioning compressor in connection with torque performance and loss.

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Electrical Parameter Tests of Synchronous Reluctance Motor

  • Khang, Huynh Van;Hwang, Seon-Hwan;Kim, Jang-Mok;Ahn, Jin-Woo
    • Proceedings of the KIPE Conference
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    • 2007.07a
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    • pp.211-213
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    • 2007
  • The electrical parameters are used to calculate gains in the current regulator as well as to determine the reference currents of speed controller in various control strategies of Synchronous Reluctance Motors (SynRMs). Many methods of measuring or estimating the electrical parameters of SynRM have been proposed by other authors. But almost papers only measure or estimate in the limited conditions without fully considering the effects of inverter, connecting wire and magnetic saturation. The parameter results are usually different from the real system parameters. The drive performance, therefore, can not be good if using inaccurate parameters. In this paper, several methods used to measure the electrical parameters are introduced. The first method is LCR meter. And then, a method determining inductances by measuring AC current and voltage from AC power supply is presented. A new method with high reliability is proposed to measure the electrical parameters of SynRM. The experiment results verify the effectiveness of the new proposed method.

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Characteristic Analysis of Synchronous Reluctance Motor Related to Slot Numbers and winding using Coupled Preisach Model & FEM (프라이자흐 모델이 결합된 유한요소법을 이용한 슬롯수, 권선법에 따른 동기형 릴럭턴스전동기의 특성해석)

  • Byun, Chan-Geun;Jang, Young-Jin;Lee, Mi-Jung;Lee, Jung-Ho
    • Proceedings of the KIEE Conference
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    • 2003.07b
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    • pp.1012-1014
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    • 2003
  • This paper deals with the characteristic Analysis of synchronous reluctance motors (SynRMs) using coupled Preisach modeling & FEM. The focus of this paper is the characteristic Analysis relative to Inductances and losses on the basis of stator slot number, winding in SynRMs. The coupled Finite Elements Analysis (FEA) & Preisach model has been used to evaluate the nonlinear solution. Comparisons arc given with characteristics of normal distributed winding SynRM and those according to stator slot number, winding in concentrated winding SynRM, respectively.

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Characteristics Analysis of Anisotropy Rotor SynRM Using a Coupled FEM & Preisach Model (유한요소법과 프라이자흐 모델이 결합된 해석기법을 이용한 이방성 회전자 동기형 릴럭턴스 전동기의 특성 분석)

  • Lee, Myoung-Ki;Lim, Hwang-Bin;Lee, Min-Myung;Lee, Jung-Ho
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.858-859
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    • 2007
  • This paper deals with the characteristics analysis of Synchronous Reluctance (SynRM) with anisotropy rotor using a coupled FEM & Preisach model. The focus of this paper is the design relative to the output power on the basis of rotor materials of a SynRM. The coupled Finite Elements Analysis (FEA) & Preisach model have been used to evaluate nonlinear solutions. Comparisons are given with characteristics of normal synchronous reluctance motor and those of anisotropy rotor SynRM (ANISO-SynRM), respectively.

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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.

Study on the Characteristic of Ld, LQ Parameter for Interior Permanent Magnet Synchronous Motor in different barrier width (배리어 길이에 따른 매입형 영구자석 동기전동기의 Ld, Lq 파라미터 특성에 관한 연구)

  • Jang, Ik-Sang;Kim, Seung-Joo;Jin, Chang-Sung;Kim, Ki-Chan;Lee, Ju
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.3
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    • pp.496-501
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    • 2009
  • Interior Permanent Magnet Synchronous Motor (IPMSM) produces two kind of torque that Magnetic and Reluctance torque. The permanent magnet linkage flux ${\Psi}_a$ and d-axis and q-axis inductances have an important influence on the torque characteristic of IPMSM. Thus their accurate prediction is essential for predicting performance aspect such as the torque and flux-weakening capabilities. In this paper, the influence of barrier width on the ${\Psi}_a$ and $L_d$, $L_q$ is calculated by FEM analysis. Predictions are validated by comparison the average torques, using Maxwell Stress Tensor method.

A Motion Control System of Reluctance Synchronous Motor with Direct Torque Control (직접 토크제어에 의한 리럭턴스 동기전동기의 위치제어 시스템)

  • Kim Min-Huei;Kim Nam-Hun;Choi Kyeong-Ho;Kim Dong-Hee;Lee Sang-Ho;Hwang Don-Ha
    • Proceedings of the KIPE Conference
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    • 2001.12a
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    • pp.23-26
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    • 2001
  • This paper presents a digital motion control system for Reluctance Synchronous Motor (RSM) drives with direct torque control (DTC). The system consists of stator flux observer, torque estimator: two hysteresis band controllers, an optimal switching look-up table, IGBT voltage source inverter(VSI), and TMS320C31 DSP controller by using fully integrated control software. The stator flux observer is based on the combined voltage and current model with stator flux feedback adaptive control of which inputs are current, voltage and actual rotor angle for wide speed range. In order to prove the suggested motion control algorithm, There are some simulation and testing at actual experimental system. The developed digitally high-performance motion control system are shown a good motion control response characteristic results and high performance features using 1.0Kw RSM.

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Nonlinear Backstepping Control of SynRM Drive Systems Using Reformed Recurrent Hermite Polynomial Neural Networks with Adaptive Law and Error Estimated Law

  • Ting, Jung-Chu;Chen, Der-Fa
    • Journal of Power Electronics
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    • v.18 no.5
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    • pp.1380-1397
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    • 2018
  • The synchronous reluctance motor (SynRM) servo-drive system has highly nonlinear uncertainties owing to a convex construction effect. It is difficult for the linear control method to achieve good performance for the SynRM drive system. The nonlinear backstepping control system using upper bound with switching function is proposed to inhibit uncertainty action for controlling the SynRM drive system. However, this method uses a large upper bound with a switching function, which results in a large chattering. In order to reduce this chattering, a nonlinear backstepping control system using an adaptive law is proposed to estimate the lumped uncertainty. Since this method uses an adaptive law, it cannot achiever satisfactory performance. Therefore, a nonlinear backstepping control system using a reformed recurrent Hermite polynomial neural network with an adaptive law and an error estimated law is proposed to estimate the lumped uncertainty and to compensate the estimated error in order to enhance the robustness of the SynRM drive system. Further, the reformed recurrent Hermite polynomial neural network with two learning rates is derived according to an increment type Lyapunov function to speed-up the parameter convergence. Finally, some experimental results and a comparative analysis are presented to verify that the proposed control system has better control performance for controlling SynRM drive systems.