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김영삼,권영안 釜山大學校生産技術硏究所 2003 生産技術硏究所論文集 Vol.62 No.-
영구자석 동기전동기는 정확한 속도 및 토크 제어를 위해서 회전자의 속도뿐만 아니라, 회전자의 위치정보가 반드시 요구된다. 그러나 회전자의 위치 및 속도 센서들은 경제적인 문제점과 신뢰성 감소의 문제점을 가진다. 최근에는 이러한 문제점을 극복하기 위하여 속도 및 위치 센서를 사용하지 않는 센서리스 제어에 관한 연구가 많이 이루어지고 었다. 본 논문에서는 영구자석 동기전동기의 새로운 센서리스 제어방식으로서 MRAS(Model Reference Adaptive System) 방식을 제안한다. 본 방식은 MRAS의 기준모텔에서 측정전류를 피이드백하는 상태 관측기로부터 역기전력을 추정하고 비교모텔에서 영구자석 자속에 의한 수식을 이용하여 역기전력을 추정하며, 두 추정기 모텔에서 추정된 역기전력을 상호 비교하고 그 오차를 적웅 메카니즘에 적용하여 회전자 속도를 추정 하는 방식이다. 본 논문에서 제안한 알고리즘의 성능을 검증하기 위하여 시율레이션 및 실험을 수행하였다.
자동화된 실험계획법과 다층 퍼셉트론 기법을 이용한 영구자석형 동기전동기의 형상 최적설계
유용민 국제차세대융합기술학회 2020 차세대융합기술학회논문지 Vol.4 No.5
전기자동차용 구동모터로서 영구자석형 동기전동기가 주로 사용되고 있으며, 전기자동차에서 요구하는 다 양한 특성을 동시에 만족해야 되기 때문에 최적화에 대한 연구가 활발하게 진행되고 있다. 하지만 기존의 영구자 석형 동기전동기의 최적설계 방법은 실험횟수만큼의 기계적인 모델링, 유한요소해석이 필요하므로 매우 복잡하고 시간이 많이 소요된다. 본 논문에서는 자동화된 실험계획법과 유한요소해석을 바탕으로 영구자석형 동기전동기의 최적설계 방법을 연구하였다. 전동기의 형상최적화는 두 개의 메타모델링 기법과 두 개의 최적설계 알고리즘을 각 각 조합하여 수행된다. 첫째, 전동기의 평균토크는 목적함수로 설정되었고, 둘째, 역기전력의 고조파 왜곡, 효율, 토크리플은 제약조건으로 설정되었다. 자동화된 실험계획법에 의해 전동기의 유한요소해석은 쉽게 수행되며, 이 결과를 바탕으로 민감도 분석과 메타모델링이 진행되었다. 메타모델링은 기존에 주로 사용되는 Kriging 모델과 MLP(Multi-Layer Perceptron) 기법을 각각 이용하였고, 생성된 메타모델들은 전동기의 형상최적화를 위해 각각 유전알고리즘과 HMA(Hybrid Metaheuristic Algorithm) 알고리즘과 결합되었다. 본 연구에서는 최적화가 용이한 자동화된 설계 절차를 통해 다양한 메타모델링 기법과 최적 알고리즘을 검토할 수 있었으며, 결론적으로 MLP 기 법을 이용한 최적설계 결과는 Kriging 모델에 비해 더 우수한 평균토크 결과를 보여주었다. As the traction motor for an electric vehicle requires various characteristics at the same time, research on the optimal design of the permanent magnet synchronous motor (PMSM) has been actively conducted. Because conventional optimal design of PMSM requires mechanical modeling and finite element analysis (FEA), the optimization procedure is complicated and time-consuming. To optimize PMSM easily and accurately, this study proposes an optimal design process based on automated design of experiments (DOE) and FEA. The shape optimization of PMSM is performed by applying two metamodeling techniques and two optimal algorithms, respectively. First, the average torque is set as the objective function, and second, THD of the back EMF, efficiency, and torque ripple are set as constraints. FEA-based analysis could be easily performed using automated DOE. Based on this, sensitivity analysis and metamodeling are performed. Metamodeling is accomplished using the previous Kriging and multi-layer perceptron (MLP) techniques, respectively. The generated metamodels are combined with GA and HMA(Hybrid Metaheuristic Algorithm) to perform PMSM shape optimization. In this study, various metamodeling techniques and optimal algorithms could be reviewed using an automated design procedure that is easy to optimize. In conclusion, the optimal design results using the MLP technique showed better average torque results than the Kriging model.
영구자석 동기 전동기 사이징 자동화를 위한 설계 알고리즘
배재남(Jaenam Bae),김원호(Wonho Kim),장익상(Iksang Jang),진창성(Changsung Jin),이주(Ju Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
A design algorithm for the permanent magnet synchronous machine is proposed in order to meet the design requirements especially size minimization and field weakening possibility for a wide speed range operation. In the algorithm, the specific loadings are automatically determined and it doesn’t need any reference specific loading data which is experimentally obtained.
자속 분포학습에 의한 영구자석 동기전동기의 토오크 리플 저감
이동희,송달섭,원태현 동의공업대학 2001 論文集 Vol.27 No.1
PMSM drives are widely used in the industrial and residential applications because of high efficiency, high power density and high performance. For better performance of PMSM, however, torque ripples should be reduced. This paper investigates a reduction of torque ripple due to the unsinusoidal flux linkage produced by the shapes of stator slot and magnetic pole. To minimize torque ripple, a simple flux estimator is proposed. This method interactively compensates the distributed flux linkage from an error between the measured and estimated currents. The proposed algorithm is verified through simulation.
차량용 Permanent-magnet synchronous motor 제어 시스템의 센서 고장 진단
임상진(Sangjin Yim),이형철(Hyeongcheol Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The permanent-magnet synchronous motor (PMSM) can offer many advantages in comparison with the brush DC motor in a vehicle. When the PMSM control system is used in the safety critical system in a vehicle, it is important to guarantee failsafe of the PMSM control system. This paper presents a fault detection and estimation algorithm of the PMSM control system. Especially, a fault detection and estimation algorithm of the current sensors and the speed sensor of the PMSM is developed by the model-based method. The presented method is verified by the computer simulation.
코깅토크 측정장치 직접구동용 영구자석 동기전동기의 정밀속도 제어
박철훈(Cheol Hoon Park),손영수(Young Su Son),함상용(Sang Yong Ham),김병인(Byung In Kim),윤동원(Dong Won Yun) Korean Society for Precision Engineering 2009 한국정밀공학회지 Vol.26 No.5
Recently PMSM(Permanent magnet synchronous motor) are used for the various direct drive applications such as index table, telescope system and so on. Because the position/speed control performance of direct drive PMSM is directly affected by the torque ripple, there are lots of studies to reduce the cogging torque in the motor design stage. In order to verify the motor design, the reliable cogging torque measurement system is essentially required. The measured motor must be rotated in the constant speed under 1deg/sec so that the cogging torque profile is measured correctly. In this study, the cogging torque measurement system which uses the direct drive PMSM and the speed controller to rotate the measured motor in 0.1rpm(0.6deg/sec) has been developed. Simulink/xPC target was used for the controller and data acquisition system. Based on PI controller, DOB and AFC have been applied to eliminate the low frequency disturbances and the periodic speed ripple. The experimental results show the good performance of the speed regulation for the reference speed 0.1rpm and the reliable profile of the measured cogging torque by the developed speed controller.
EPS 구동용 영구자석형 동기전동기의 전자기력 고조파 저감을 통한 소음 특성 개선
김지민(Jimin Kim),김도진(Dojin Kim),홍정표(Jungpyo Hong),이근호(Geunho Lee) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
This paper deals with acoustic noise of EPS motor. Acoustic noise is the important characteristics of EPS motor because the motor is near to driver in case of Column type EPS motor. Vibration generated by electromagnetic force of motor is the main cause of noise. Especially a great noise occurs by the resonance where natural frequency of motor is identical to harmonics frequency of electromagnetic force. Therefore reduction in harmonics of electromagnetic force is required for reducing the noise. In this paper, the harmonics of electromagnetic force is reduced by the improvement design of motor and influence on harmonics frequency is analysed by noise test.
이중 회전자 구조의 영구자석 동기전동기의 제어기법에 관한 연구
이재범,이형우,정거철,박찬배 한국철도학회 2019 한국철도학회논문집 Vol.22 No.11
In this paper, the driving control of a dual-rotor permanent magnet synchronous motor (DR-PMSM) with integrated magnetic-gear and permanent magnet motor is implemented. Unlike the conventional traction motor structure, DR-PMSM has a dual rotor structure in which the inner and outer rotors rotate at different speeds. In the DRPMSM, the gear ratio between the inner and outer rotors changes according to the number of slots of the stator and polepieces. Motor has a structure in which the wheel is directly fastened to the outer rotor, composed only of a magnetic material having low speed and high torque characteristics, and controls the inner rotor, into which a permanent magnet having high speed and low torque characteristics is inserted. DR-PMSM has the characteristics of IPMSM, with different d-axis and q-axis inductances. In this paper, to verify the application feasibility for railway vehicles, the maximum torque control method per unit current, weak magnetic flux control method, and maximum torque per unit voltage method for control of low speed and high speed range of DR-PMSM designed for 1kW class are examined and verified through PSIM S/W simulation.
농용 다목적 차량용 영구자석 전동기의 설계에 관한 연구
서정무(Jungmoo Seo),김정환(Junghwan Kim),김영균(Youngkyun Kim),정인성(Insoung Jung),정현교(HyunKyo Jung) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
This paper presents a design of permanent magnet synchronous motor for agricultural utility vehicle. Based on the output characteristics of conventional diesel vehicle, required speed and torque are derived and motor specification is determined. In order to evaluate demagnetization behavior in driving condition, operating points of permanent magnet at a critical point are evaluated using magnetic field and flux density calculation. The manufactured motor is tested and compared with the simulated results.