가감속 성능향상을 위한 매입형 영구자석 견인전동기 연구

박현준 한국도시철도학회 2019 한국도시철도학회논문집 Vol.7 No.2

In this study, it is necessary to analyze characteristics of the improvement of acceleration/deceleration performance using the existing vehicles according to the operation specifications. Also, it is important to analyzed the traction power of the improved acceleration/deceleration performance of vehicle, to calculate the capacity per a motor and to design the final conceptual design. To improve the acceleration/deceleration of railway vehicles, it is necessary to analyze acceleration/deceleration characteristics of existing railway vehicles. Therefore, in this study, the acceleration/deceleration characteristics of the propulsion system were analyzed based on the existing Seoul Metro's Line 2 vehicle. Based on the specification of the 5M5T of Line 2 vehicle, the required torque and capacity per a traction motor of vehicle were analyzed when the acceleration/deceleration is raised from the existing 3.0km/h/s to 4.8km/h/s or 6km/h/s. Based on the analysis of the required torque and capacity per a traction motor according to the vehicles(5M5T, 8M2T, 9M1T and 10M) and acceleration(3.0km/h/s, 4.8km/h/s, 6.0km/h/s), the basic design of the traction motor was performed for each vehicle and acceleration. The traction motor was designed with a interior permanent magnet synchronous motor with high efficiency and high power density compared to the conventional induction motor. The size of the traction motor was set to the limited size of the conventional traction motor of 5M5T and the acceleration of 3.0km/h/s. 철도차량의 가ㆍ감속 성능을 향상시키기 위해서는 기존 철도차량의 가ㆍ감속 특성 분석이 필요하다. 따라서 검토과정의 대상으로는 기존 도시ㆍ광역철도차량인 서울교통공사 2호선 차량을 기준으로 추진시스템의 가ㆍ감속 성능 특성을 분석하였다. 2호선 도시철도차량(5M5T)의 운행사양을 바탕으로 기존 가ㆍ감속도인 3.0km/h/s에서 4.8km/h/s, 6.0km/h/s로 상승될 때 차량에서의 요구 견인력과 견인전동기 1대 당 요구 토크 및 용량을 분석하였다. 그리고 기존 5M5T 차량 외 추가적으로 M차 T차 변화에 따른 가ㆍ감속 성능 향상을 위한 특성을 분석하였다. 차량 8M2T, 9M1T, 10M, 가속도 3.0km/h/s, 4.8km/h/s, 6.0km/h/s에 따라서 차량의 요구 견인력과 견인전동기 1대 당 요구 토크 및 용량을 분석하였다. 본 논문에서는 차량 5M5T, 8M2T, 9M1T, 10M, 가속도 3.0km/h/s, 4.8km/h/s, 6.0km/h/s에 따라서 견인전동기 1대 당 요구 토크 및 용량을 분석한 결과를 바탕으로 각 차량, 가속도 별로 견인전동기 형태설계를 수행하였다. 견인전동기는 기존 유도전동기 대비 높은 효율과 고출력밀도 특성을 갖는 매입형 영구자석 동기전동기로 제안하여 형태설계를 수행하였다. 견인전동기의 사이즈 분석의 기준 대상으로 기존 차량 5M5T, 가속도 3.0km/h/s의 견인전동기 사이즈를 제한사이즈로 설정하고, 기존 대차에 취부 가능한지에 대한 분석을 수행하였다.

트랙션용 매입자석형 동기전동기와 유도전동기의 설계 및 특성 비교

김미정(Mi-Jung Kim),김광수(Kwang-Soo Kim),함상환(Sang-Hwan Ham),조수연(Su-Yeon Cho),이주(Ju Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11

According to the importance of change in climate, the study of HEV/EV is achieved actively throughout the world. HEV/EV require the characteristic of high torque, high speed, high power density, and high efficiency. This paper present the comparisons of permanent magnet synchronous motor and induction motor used plentifully for traction.

도시철도차량 견인용 IPMSM의 구조 특성에 따른 회전자 형상 설계에 관한 연구

정거철(Geochul Jeong),박찬배(Chanbae Park),오세영(Seyoung Oh),이주(Ju Lee) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10

본 논문에서는 도시철도차량 견인용 IPMSM(Interior Permanent Magnet Synchronous Motor)의 구조 특성에 따른 회전자 형상 설계에 관한 연구 논문이다. IPMSM의 회전자가 고속으로 회전하면서 회전자 내부에 삽입되어 있는 영구자석이 강한 원심력을 받는다. 이때에 구조적 강성이 약해지므로 회전자 형상에 따라 큰 영향을 미치게 된다. 따라서, 도시철도차량 견인용 IPMSM의 설계 및 요구사양에 적합하면서 강성에도 강한 모델을 1차 모델로부터 도출하였다. 영구자석을 분할해 Bridge를 1, 2개 적용하여 설계한 후 전기적 특성과 구조적 특성을 분석하였다. 따라서, 본 논문에서는 회전자 형상이 다른 3개의 모델을 분석함으로써 도시철도차량 견인용 IPMSM의 요구사양에 만족하며 구조 특성에도 강한 모델을 도출하였다. In this paper, a study on rotor shape design according to structure characteristics of IPMSM (Interior Permanent Magnet Synchronous Motor) for urban railway vehicle traction. Permanent magnet of inner rotor while rotating the rotor of IPMSM at high speed receives a strong centrifugal force. At this time, weakening the structural rigidity, the structure characteristics has a significant effect depending on of a rotor shape. Therefore, suitable for design and requirements of IPMSM for urban railway vehicle traction, and was derived model a stronger structural rigidity from the primary model. After the design is applied for 1, 2 Bridge divided permanent magnet, analyze the electrical and structural characteristics. Therefore, in this paper, analyzes the model in three different rotor shape, suitable for requirements of IPMSM for urban railway vehicle traction, and was derived model a stronger structural rigidity.

전기 자동차용 견인 전동기 설계 및 극수 변화에 따른 특성 분석

이동희(Dng-hee Lee),박민로(Min-Ro Park),차경수(Kyung-Soo Cha),홍정표(Jung-Pyo Hong) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11

In this paper, traction motor for Electric Vehicle(EV) is designed according to system requirements, and high power density motor is designed and compared in the same system. The design specifications of the standard motor are Interior Permanent magnet Synchronous Motor(IPMSM) of 8pole-48slot of 100kW class, 280Nm for maximum torque and 12,000rpm for maximum speed. Design of the motor was aimed at maximizing the torque density using response Surface Methodology (RSM). The specifications of the high power density motors to be compared were determined after increasing the reduction gear ratio in the same system specification. Based on the assumption that the carrier frequency of the inverter is the same, the number of poles is determined according to the maximum speed of the motor and the 6pole-36slot model is designed through the same process. The characteristics of the motor such as power density and efficiency were compared according to the design results of the two motors.

견인용 권선형 동기 전동기의 설계 연구

이재준,민준섭 한국철도학회 2020 한국철도학회논문집 Vol.23 No.9

This paper is a research paper on the study of the wound field synchronous motor design for traction applications. To design a wound field synchronous motor to satisfy requirements of high power density under limited size conditions, a basic design taking into account the magnetic flux saturation phenomenon of electric steel must be performed. To consider the nonlinear magnetic flux saturation characteristic of electrical steel, the nonlinear magnetic equivalent circuit of a wound field synchronous motor was organized and a design strategy for performing characteristic analysis and basic design was studied based on the circuit. Basic design was performed using the load specifications of the propulsion system, and finite element analysis on the basic design model was performed to verify the accuracy of the basic design strategy. Finally, the output characteristics of the design parameters of the wound field synchronous motor were analyzed.

환경차량용 구동전동기의 최적토크제어에 관한 연구

김영준(Youngjun Kim),임성엽(Seongyeop Lim) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5

In an eco-friendly vehicle, the parameters of a traction motor(Interior permanent magnet synchronous motor) vary nonlinearly as the temperature variation caused by the different load conditions. It not only degrades the performance of torque control, but also causes the instable situation of control for a traction motor. This paper proposes an optimal torque control scheme of a traction motor for an eco-friendly vehicle considering temperature variation. For the this, the design of experiments was used for building a response surface model between the output torque and the operating conditions of traction motor. An approximate model is applied to the torque compensation control according to the temperature variation. The feasibility of a proposed control method is demonstrated through experiments.

전동차 DC견인전동기 노후고장률 분석

최규형(Kyuhyoung Choi) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

A reliability analysis is provided for DC traction motors of electrical railways which might have low reliability and short lifetime compared to AC traction motors because they have rotor windings and commutators. The reliability analysis was made using the field reliability data of DC traction motors operating on the electric railways around the Metropolitan area, which have been investigated at the maintenance depot. Failure analysis of these data shows insulation deterioration of windings and flashover over commutator slots induce the failures of DC traction motors. Minitab has been used for the reliability analysis which show that 3-parameter Weibull distributions are good for the simulation of the failure rate distribution of DC traction motors which have been used for more than 20 years. The shape parameters of Weibull distributions are 2.9 for the stators and 2.2 for the rotors of DC traction motors. The results of analysis clarified the failure rate characteristics of DC traction motors in wear out condition.

전동차의 각륜구동 전동기시스템에 관한 국내외 특허동향

박현준(Hyun-june Park),이한민(Han-min Lee),김재원(Jae-won Kim),이장무(Chang-moo Lee),김길동(Kil-dong Kim) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.5

경제성과 친환경적인 시스템의 기술개발이 요구되고 있고 선진국들은 활발한 연구가 진행되고 있다. 기존 방식은 곡선 주행 시 내측과 외측 반경 차에 의한 선속도 차이로 한쪽 차륜이 끌려가는 구조이므로 차륜과 레일이 마모되어 소음이 발생하고, 유지보수비용이 증가한다. 또한 유도전동기는 효율이 낮고 외부공기로 냉각하는 방식으로 이물질로 인한 유지보수 비용이 많이 들어가는 구조로 되어 있다. 도시철도 운행구간 중 급곡선 구간 비율이 높은 점을 감안할 때, 기존보다 전동기 효율을 향상시키고 곡선 주행 시 차륜이 각각 회전하게 구성하므로 곡선추종성을 향상시키면서 소음과 유지보수비용을 줄일 수 있는 영구자석 동기전동기타입의 각륜구동 전동기 기술개발이 필요하다. 이 분야의 국내외 특허동향을 분석해 보았다. Conventional induction motor driving system using the inner and outer radius of the curved lines by the car speed difference between the wheels is pulled to one side, so that the wheel and rail wear and noise is generated, and the maintenance cost is increased. In addition, the efficiency of the induction motor is cooled by the outside air is low, foreign matter way costly maintenance due to the structure in which there is need improvement. Thus, the use of high-energy class of urban rail-curve given that a high percentage of efficiency than conventional motors and rotate each curve so that the curve of the wheel when driving to improve traceability and reduce noise and maintenance costs of the permanent magnet synchronous independent-wheel-type traction motor skills need to be developed. This paper analyzed trends in the field of patents.

8200호대 전기기관차 견인전동기의 운전 특성 해석

정진욱(Jin-Uk Jeong),김기찬(Ki-Chan Kim),임채웅(Chae-Woong Lim) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10

8200호대 전기기관차는 EuroSprinter 2세대 화물형인 ES64F를 원형으로 하여 대한민국의 운용 환경에 맞추어 조정한 기관차이다. 지멘스에서 유명한 VVVF 인버터 계열인 SIBAS32계열 전장품을 사용하며, 1300[kW]급 견인전동기 4개로 5200[kW]의 출력을 낼 수 있다. 현재 8200호대 전기기관차는 견인전동기의 노후화로 인해 유지보수가 잦아지고 있는 실정이며, 원천기술의 미확보로 인해 고장에 대한 신속한 대응이 어려워지고 있다. 이에 8200호대 견인전동기의 국산화에 대한 연구가 진행되고 있다. 본 논문에서는 8200호대 전기기관차 견인전동기의 사양과 FEM모델에 대해 기술하였으며, 전원주파수와 견인전동기의 속도 변화에 따른 T-N 커브 및 운전점의 특성을 해석하였다. Korail 8200 series are electric locomotives reconstructing the second generation model of the Siemens EuroSprinter ES64F to adjust them to Korean operating environment. With four 1,300 kW electric motors, the total traction power is 5,200 kW by using SIBAS32 of VVVF inverter. Although the series have been needed more maintenance works with their deterioration, it is difficult to deal with that due to the lack of source technology. As a result, the research on the localization of technology is being performed nowadays. This paper is aimed at introducing the traction motor’s specification and the result of FEM, and analyzing driving characteristics as well as T-N curve according to the change of source frequency and the motor’s rotative velocity.

전기자동차 견인용 전동기의 극 수 슬롯 수 조합에 따른 전기적 특성 및 진동 특성 분석

박권일(Kwon-Il Park),차경수(Kyoung-Soo Cha),윤명환(Myung-Hwan Yoon),홍정표(Jung-Pyo Hong) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5

The greenhouse effect is getting worse in these days. To reduce this environmental problem, emission regulation in the automotive industries became strict. Accordingly, the automotive makers stared to develop the environmental friendly vehicles such as the hybrid electric vehicle(HEV) and the electric vehicle(EV). EV is an excellent alternative for conventional combustion engine vehicle. As high torque and wide operation range are essential for EV traction motor. Recently, it is necessary to design an electric motor having excellent vibration characteristics as well as electrical characteristics in accordance with the desire of the consumer who demands a comfortable riding condition. This paper deals with electrical and vibration characteristic of a traction motor for EV depending on pole-slot combination. First, four motors having the same output and different number of slots were selected. Second, the electrical characteristics such as average torque and torque ripple induced voltage of each motor were compared using finite element analysis. Third, the vibration order of the four models is calculated numerically and the vibration characteristics of each motor are compared. Finally number of pole slot combinations suitable for traction motor using the results of electrical and vibration characteristics.