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Review and Development of electric motor Systems and electric Powertrains for New Energy Vehicles

Automotive Innovation 2021年第1期4卷 3-22页

作者： William Cai Xiaogang Wu Minghao Zhou Yafei Liang Yujin Wang Institute of electrical and Power Electronics Engineering Harbin University of Science and TechnologyHarbin 150080HeilongjiangChina Technical Center Beijing electric Vehicle Co. LtdDaxing DistrictBeijing 100176China Electromechanical Department Taiyuan UniversityTaiyuan 030032ShanxiChina

This paper presents a review on the recent research and technical progress of electric motor systems and electric powertrains for new energy *** the analysis and comparison of direct current motor,induction motor,and synchronous motor,it is found that permanent magnet synchronous motor has better overall performance;by comparison with converters with Si-based IGBTs,it is found converters with SiC MOSFETs show significantly higher efficiency and increase driving mileage per *** addition,the pros and cons of different control strategies and algorithms are ***,by comparing series,parallel,and power split hybrid powertrains,the series-parallel compound hybrid powertrains are found to provide better fuel *** electric powertrains,hybrid powertrains,and range-extended electric systems are also detailed,and their advantages and disadvantages are ***,the technology roadmap over the next 15 years is proposed regarding traction motor,power electronic converter and electric powertrain as well as the key materials and components at each time frame.

关键词： New energy vehicle Traction motor motor control Power electronics converter Control algorithm Permanent magnet synchronous motor electric motor electric powertrain

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中国电动机质量监管及标准体系概述

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China Standardization 2024年第4期128卷 69-73页

作者：王鑫辛勇孙玉泉丛林 Shandong Institute for Product Quality Inspection

This paper systematically analyzes the product quality supervision methods in China,introduces the main functions of market regulation departments and the product supervision and random inspection process,and introduces the channels for feedback on consumers’quality and safety problems,the online platform for consumer problem *** also summarizes the main standards categories and standards systems for electric motors in China,and the standards and key inspection items for supervision and random inspection.

关键词： electric motor quality supervision supervision and random inspection standards

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DESIGN AND EXPERIMENT OF electric BUS

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Chinese Journal of Mechanical Engineering 2002年第1期15卷 57-61页

作者： Sun Fengchun Chen Yong Zhang Chengning Sun Liqing School of Vehicle and Transportation Engineering，Beijing Institute of Technology， Beijing 100081，China School of Vehicle and Transportation Engineering Beijing Institute of Technology 北京 100081

Performance and reliability experiments on BJD-6100EV electric buses, jointlydeveloped by Beijing Institute of Technology and Beijing Public Transport Company, are *** power model of battery pack is established and maximum output power is analyzed. A permanentmagnetic direct current (PMDC) motor with enhanced windings is developed for the bus. Torque-speedcharacteristics of the motor are modeled and performance of electric bus is analyzed. Computationalmethod of the range of electric bus is proposed and discussed. Experiments show that electric buscan realize design requirements. Computational methods are verified with the help of field test. Itis expected that design and computation method will provide helpful reference to development ofelectric vehicles.

关键词： electric bus Storage battery electric motor Range Performancecharacteristics

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Research on Hybrid Input Mechanical Press Driven by Two motors

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Journal of China University of Mining and Technology 2006年第1期16卷 57-60页

作者： HE Yu-peng ZHAO Sheng-dun ZOU Jun ZHANG Zhi-yuan WANG Bao-an School of Mechanical Engineering Xi＇an Jiaotong University Xi＇an Shaanxi 710049 China School of Foreign Language Henan Agricultural University Zhengzhou Henan 450002 China

Given the speed requirements of a mechanical press slider, a differential gear train is adopted instead of the belt and gear drive of a general mechanical press. Two electric motors are used to drive the differential gear train with hybrid input. Based on the working principle of a differential gear train, the angular speed equations and the power dis- tribution equations of the input-output system are established. By controlling the angular speeds of the two motors, the slider can move at different speeds. Taken a JH23-100 type mechanical press as example, the driving system is designed and the power of two motors determined. The simulated results show that the highest slider speed in the mechanical press approaches 39 mm/s only at the forging-punching stage, far less than the 232 mm/s of a general JH23-100 type mechanical press. This provides a new scheme to realize low-speed forging-punching technology from a mechanical press.

关键词： mechanical press hybrid input differential gear train electric motor

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Design and experimental study of seed precise delivery mechanism for high-speed maize planter

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International Journal of Agricultural and Biological Engineering 2018年第4期11卷 81-87页

作者： Quanwei Liu Tao Cui Dongxing Zhang Li Yang Yunxia Wang Xiantao He Mantao Wang College of Engineering China Agricultural UniversityBeijing 100083China School of Mechatronics Engineering Zhengzhou University of AeronauticsZhengzhou 450046China

Aiming at improving the seed spacing uniformity of maize planter at high forward speed,a seed precise delivery mechanism driven by electric motor has been developed and evaluated in *** mechanism was designed to deliver single seed from seed meter to ***’s movement from the seed release point in a seed meter to the seed delivery cavity in the belt was analyzed,the mathematical model of seed movement in the seed precise delivery mechanism was established based on seed delivery time analysis.A mechanical prototype was designed and associated control system was *** performance contrast experiment was conducted between a traditional seed tube and newly developed seed precise delivery mechanism,and test results indicated that the qualities of feed index of the seed precise delivery mechanism were higher than those of the traditional seed tube delivery mechanism,and the coefficients of variation of the seed precise delivery mechanism were lower than those of the traditional seed tube delivery mechanism when the forward speed of planter was set at 10 km/h,12 km/h and 14 km/h,*** indicated the seed precise delivery mechanism significantly improved seed spacing uniformity of maize planter compared with the traditional seed tube delivery mechanism.

关键词： seed precise delivery mechanism electric motor seed spacing uniformity delivery time mechanical prototype

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A General Method to Compute the electric Flux Lines between Two Magnet Wires in Close Contact and Its Application for the Evaluation of Partial Discharge Risks in the Slots of electric Machines Embedded in Future Transportation Systems

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Advances in Aerospace Science and Technology 2021年第1期6卷 24-42页

作者： Philippe Collin David Malec Yvan Lefevre LAPLACE Université de Toulouse CNRS INPT UPS France

The sizing of the electrical Insulation System (EIS) is an important challenge in electric motors of higher specific power driven by faster inverters. That keeps increasing the electric stress which the winding is submitted in the stator slot. Consequently, Partial Discharges (PD) are more likely to occur. Nowadays, the Paschen’s criterion is widely used to evaluate the risk of partial discharge. It requires the knowledge of electric field lines. This paper presents a method to precisely compute the electric field lines in a two-dimensional (2D) electrostatic problem. The field of study is composed of two magnet wires in close contact. Such configuration is representative of the turn-to-turn interaction in an electric motor slot. The problem is solved using the scalar potential formulation only. The notion of flux tubes is used for the

关键词： Partial Discharges Dielectric Constant electric motor Finite Elements Paschen’s Criterion Ballistic Method

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Future Vehicle driven by electricity and Control

Future Vehicle driven by Electricity and Control

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第二十三届中国控制会议

作者： Yoichi Hori Institute of Industrial Science The University of Tokyo 4-6-1 KomabaMeguroTokyo153-8505 Japan

＜正＞ As an electric vehicle is driven by electric motors, it has the following remarkable advantages: （1） motor torque generation is fast and accurate, （2） motor can be installed in each wheel, and （3） motor torque can be known precisely. These advantages enable us easily to realize （1） High performance ABS and TCS with minor feedback control at each wheel, （2） Easy installation of vehicle motion control like DYC, and （3） Estimation of road surface condition. "UOT March Ⅰand Ⅱ" are our experimental EVs to prove these advantages. In particular, "March II" driven by four inwheel motors was made for intensive study of advanced motion control of electric vehicle. "UOT Cadwell EV" is our new EV for more advanced adhesion control in the future, which was just completed in April, 2004.

关键词： electric vehicle electric motor torque response motion control traction control adhesion control ABS direct yaw control road condition estimation disturbance observer

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DESIGN AND TEST OF ONE-OFF BLOOD PUMP IN EXOTERIC CARDIOPULMONARY BYPASS SUPPORTS

DESIGN AND TEST OF ONE-OFF BLOOD PUMP IN EXOTERIC CARDIOPULM...

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第三届国际压缩机技术会议

作者： Xiaobo GONG Xudong ZHANG Zhaolin GU LiBen JIANG YongzhangYUEnvironmental and Chemical School of Xi’an Jiaotong UniversityXi’an City 710049 P.R.ChinaTelephone: +86 (29) 2673500Fax: +86 (29) 3237910Email: gongxiaobo@yahoo.comYundong HUANGChangzhou Ranco Reversing Valve Co. Ltd.Telepnone: +86 (519) 5718008Fax: +86 (519) 5718052

＜正＞A design plan of the blood pump driven by a linear electric motor is proposed. The engineering design rules for its key parts are described, and furthermore, preliminary test result of a model machine is got.

关键词： blood pump linear electric motor corrugate tube reciprocating machine

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