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Performance Analysis of the Linear Induction Motor for the Deep-Underground High-Speed GTX
박찬배,이형우,이주 대한전기학회 2012 Journal of Electrical Engineering & Technology Vol.7 No.2
In order to develop a deep-underground great train express (GTX) in South Korea, the specifications decision and development of a traction control system (including an inverter and a traction motor), which considers a variety of route conditions, must be advanced. In this study, we examined the running resistance properties of a high-speed traction system based on a variety of tunnel types and vehicle organization methods. Then, we studied the power requirements necessary for the traction motor to maintain balanced speed in the high-speed traction system. From this, we determined the design criteria for the development of a high-speed traction system for use in the deep-underground GTX. Finally, we designed a linear induction motor (LIM) for a propulsion system, and we used the finite element method (FEM) to analyze its performance as it travelled through deep-underground tunnels.
동일한 토크-속도 성능곡선을 만족하는 철도차량 직접구동용 IPMSM과 마그네틱 기어드 모터의 특성 비교 연구
박찬배,김성휘,조익현,임재현,이주 대한전기학회 2022 전기학회논문지 Vol.71 No.10
This paper conducted a comparative study on the characteristics of an Interior Permanent Magnet Synchronous Motor (IPMSM) and a Magnetic Gear Motor (MGM) with a 200 kW class direct drive motor (DDM). The IPMSM and MGM for DDM satisfying a given torque-speed performance curve were designed, and it was examined whether the same torque-speed performance curve could be satisfied based on the voltage limiting ellipse of MGM newly derived. In addition, the electromagnetic characteristics and performance of the two motors were analyzed, and a comparative study of the two motors was conducted in various aspects such as current density, power density, and efficiency.
도시철도차량 견인용 IPMSM의 외함일체형 수냉각장치 설계 연구
박찬배 한국철도학회 2020 한국철도학회논문집 Vol.23 No.5
In general, a totally-enclosed traction motor is disadvantageous in comparison to air-cooling for thermal problems. However, when PMSM is applied together with an additional cooling device, the size and weight of the totallyenclosed traction motor can be reduced compared to existing ones. Therefore, in this paper, a design study on a frame-integrated water-cooling system of a 210 kW-class IPMSM for urban railway vehicle traction and a design verification study through analysis of thermal characteristics using FEM are performed. First, the frame-integrated water-cooling system for 210 kW class IPMSM with single cooling channel is designed. Next, based on the results of deriving the heat source through loss analysis of 210 kW-class IPMSM, the heat transfer characteristics of the IPMSM according to the cross-sectional area of the cooling pipe, the coolant flow velocity, and the flow rate change are analyzed. Finally, the final design model is derived based on the results of the analysis of the heat transfer characteristics of the initial design model, and design verification is performed through analysis of the heat transfer characteristics.
Thermal Analysis of IPMSM with Water Cooling Jacket for Railway Vehicles
박찬배 대한전기학회 2014 Journal of Electrical Engineering & Technology Vol.9 No.3
In this paper, the water cooling method among the forced coolant cooling methods isconsidered to be applied to the 110kW-class IPMSM for railway vehicles. First, basic thermal propertyanalysis of the IPMSM is conducted using the three-dimensional thermal equivalent network method. Then, based on the results of the basic thermal property analysis, some design requirements for thewater cooling jacket are deduced and a basic design of the water cooling jacket is carried out. Finally,thermal equivalent circuit of the water cooling jacket is attached to the IPMSM’s 3D thermalequivalent network and then, the basic thermal and effectiveness analysis are conducted for the case ofapplying the water cooling jacket to the IPMSM. In the future, the thermal variation trends inside theIPMSM by the application of the water cooling jacket is expected to be quickly and easily predictedeven at the design step of the railway traction motor.
박찬배 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.2
In general, urban railway vehicles, which are recently introduced in Korea, have adopted a totally-enclosed structure as a traction motor for ease of maintenance. The traction motors with the totally enclosed structure have the problem to be diffi cult to thermal cooling if the separated device for the heat exchange with the outside is not prepared. In fact, the totally enclosed structure is unfavorable structure on the IPMSM having a structure in which the permanent magnets are embedded in the rotor. It is often required an additional installation of a separate cooling system to solve these thermal problems. Therefore, authors perform a basic design of the solenoid pipe typed water-cooling jacket which can be applied to 210 kW-class IPMSM for urban rail vehicles in this paper. Next, the thermal characteristic analysis is performed on the various structures of the solenoid pipe and on the various fl ow conditions inside the cooling water pipe of the water-cooling jacket by utilizing 3D-FEM Tool.
박찬배,정거철,조익현 한국철도학회 2019 한국철도학회논문집 Vol.22 No.9
In general, the slot opening structure of a stator core generates cogging torque when the rotor rotates in apermanent magnet synchronous motor (PMSM). If the cogging torque is excessively large, it may cause vibration andnoise during operation of the PMSM. In the case of a magnetic-geared permanent magnet synchronous motor (MGPMSM),cogging torque is generated during operation of the PMSM because the outer rotor, made of magnetic material,and the inner rotor, in which the permanent magnet is inserted, are arranged in double. Therefore, in this study, the skewtechnique, generally used in electric motors, is applied to reduce the cogging torque of MG-PMSM. The design of theMG-PMSM is first studied for the application to a railway vehicle driving system of an MG-PMSM structurally integratedwith a magnetic gear and a PMSM. In addition, a method is studied to structurally reduce the cogging torque ofthe MG-PMSM simply by skewing the pole pieces of a low speed rotor made of magnetic material.