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The journal Automotive Innovation is sponsored by China SAE, published through Springer, distributed around the world, and reflects the top-level research and technical advance of automotive engineering. Automotive Innovation newsletter in March includes the following contents： 1. A Glimpse of Experts——Dr. Yanjun Huang 2. Article Recommendation——Four papers on Electric Drive System 3. China SAE News: · Automotive Innovation is calling for papers |
 Dr. Yanjun Huang Research Professor at School of Automotive Studies of Tongji University |
Research Interests Vehicle holistic control, HEV/EV optimization and control, motion planning and control of connected and autonomous vehicles, human-machine cooperative driving |
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Achievements Dr. Yanjun Huang is a Research Professor at School of Automotive Studies of Tongji University. Prior to joining Tongji University, he was a Research Associate at the University of Waterloo and was offered a permanent teaching position at Queen's University. He has published several books, over 60 papers in journals and conferences. He is the recipient of IEEE Vehicular Technology Society 2019 Best Land Transportation Paper Award, the 2018 Best paper of Automotive Innovation, and the top 10 most popular papers in Automobile Technology. He is serving as associate editors and editorial board member of IET Intelligent Transport System, SAE Int. J. of Commercial vehicles, Int. J. of Autonomous Vehicle system, etc. |
  
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Review and Development of Electric Motor Systems and Electric Powertrains for New Energy Vehicles William Cai, Xiaogang Wu, Minghao Zhou, Yafei Liang & Yujin Wang |
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| This paper presents a review on the recent research and technical progress of electric motor systems and electric powertrains for new energy vehicles. Through 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 charge. In addition, the pros and cons of different control strategies and algorithms are demonstrated. Next, by comparing series, parallel, and power split hybrid powertrains, the series–parallel compound hybrid powertrains are found to provide better fuel economy. Different electric powertrains, hybrid powertrains, and range-extended electric systems are also detailed, and their advantages and disadvantages are described. Finally, 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. | |||
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Keywords: New energy vehicle · Traction motor · Motor control · Power electronics converter · Control algorithm · Permanent magnet synchronous motor · Electric motor · Electric powertrain Cai, W., Wu, X., Zhou, M. et al. Review and development of electric motor systems and electric powertrains for new energy vehicles. Automot. Innov. 4(1), 3–22 (2021) |
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Study of Series-Parallel and Power-Split DHT for Hybrid Powertrains Chengning Yao · Dan Dan · Yangjun Zhang · Yueqi Wang · Yuping Qian · Yuying Yan · Weilin Zhuge |
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| Dedicated hybrid transmission (DHT) is the developing trend of hybrid transmissions. This paper studies different types of DHTs regarding the structure, function, and performance. Firstly, the structure and function of different well-known DHTs in the market are discussed and analyzed. Through the analysis, the reasonability and necessity of the different modes and the electric motor power requirements that lie behind different DHTs are derived. Secondly, the dynamics of different DHTs are further compared with the driving areas in different modes under different driving conditions. Then, the basic or minimum dynamic requirements are defined and taken into consideration before the economic comparison. To ensure the effectiveness of the comparison, the optimization of the configurations for each kind of DHT is carried out with the modular simulation model. The economic comparison is conducted under the premise of excluding the influences of the configurations in the results. Finally, the sensitivity and influence of different engine characteristics for different DHTs are studied to find out the sensibilities of the two kinds of DHTs with engine technology. Through these studies, the essential differences and features of different DHTs can be derived to help better understand the decision in choosing the technical route for the original equipment manufacturers. | |||
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Keywords: Dedicated hybrid transmission · Series-parallel DHT · Power-split DHT · Mechanical complexity · Electrical complexity Chen, H., Li, L. & Küçükay, F. Study of series-parallel and power-split DHT for hybrid powertrains. Automot. Innov. 4(1), 23–33 (2021) |
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A Novel Electric Dual Motor Transmission for Heavy Commercial Vehicles Xiangyang Xu, Jiajia Liang, Qingjun Hao, Peng Dong, et al |
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| As a vital vehicle part, the powertrain system is undergoing a fast transition towards electrification. The new integrated electric drive system has been widely used, especially for passenger cars. In this work, a novel electric dual motor transmission is proposed for heavy commercial vehicles. The transmission scheme is firstly introduced, which can achieve 9 different operating modes including 5 single motor modes and 4 dual motor modes. Then, the mode shift map with minimum energy consumption is designed based on the motor efficiency map and the proposed energy management strategy. The driving power is appropriately distributed between the two motors in dual motor modes under the condition of minimum power consumption. In addition, a coordinated control strategy is developed for mode shift control without power interruption. The results show that the electric dual motor transmission has advantages in power consumption and power shift ability compared with the conventional single motor automated manual transmission. | |||
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Keywords: Dual motor transmission · Operating mode · Mode shift map · Mode shift control · Torque distribution · Coordinated control Xu, X., Liang, J., Hao, Q. et al.: A novel electric dual motor transmission for heavy commercial vehicles. Automot. Innov. 4(1), 34–43 (2021) |
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Model-Based Double Closed-Loop Coordinated Control Strategy for the Electro-Mechanical Transmission System of Heavy Power-Split HEVs Weida Wang, Yuhang Zhang, Xiaoxia Sun, Changle Xiang & Chao Yang |
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| The dual-mode electro-mechanical transmission (EMT) system is a crucial part of power-split hybrid electric vehicles (HEVs), especially for the heavy HEVs. To improve the precision of the system power distribution and the response speed of the electric power supply, a model-based double closed-loop coordinated control strategy is proposed. As the basis of the proposed control strategy, an EMT system model, particularly of an electrical system, is established first. The proposed control strategy includes the power distribution strategy, battery power closed-loop feedback control strategy, and motor coordinated control strategy. To verify the feasibility of the proposed control strategy, simulation and experiment are performed. The results indicate that the proposed control strategy can realize the expected power distribution by coordinating generators and motors and achieve rapid and stable electric power supply. | |||
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Keywords: Hybrid electric vehicles · Electro-mechanical transmission system · Hybrid power-split · Power coordinated control · Multi-power distribution Wang, W., Zhang, Y., Sun, X. et al.: Model-based double closed-loop coordinated control strategy for the electro-mechanical transmission system of heavy power-split HEVs. Automot. Innov. 4(1), 44–55 (2021) |
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| Automotive Innovation Special Issue on “Cutting-edge Technologies Applied in Beijing Winter Olympics” Is Calling for Papers | |||
 Automotive Innovation is organizing a Special Issue on “Cutting-edge Technologies Applied in Beijing Winter Olympics”. Topics & Guest Editors: 1. Electric vehicles and lithium battery under low temperature · Fengchun Sun, Academician of Chinese Academy of Engineering, Professor of Beijing Institute of Technology · Cheng Lin, Professor of Beijing Institute of Technology · Wenwei Wang, Associate Professor of Beijing Institute of Technology 2. Fuel cell vehicles · Minggao Ouyang, Academician of Chinese Academy of Science, Professor of Tsinghua University · Jianqiu Li, Professor of Tsinghua University · Liangfei Xu, Associate Professor of Tsinghua University 3. Automated driving in scenarios of the Winter Olympic Games · Diange Yang, Professor of Tsinghua University · Dongpu Cao, Professor of University of Waterloo, Canada · Kun Jiang, Associate Professor of Tsinghua University Submission Deadline: June 1, 2021 Submission Guidelines: Please submit your papers through the online system (www.springer.com/42154) and be sure to select Topical Collection: 2022 Beijing Winter Olympics.  Scan to Download Call for Paper |
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| CICV 2021 is to be held on May 25-27 in Beijing | |||
 The 8th International Congress of Intelligent and Connected Vehicles Technology (CICV 2021) will take place in Beijing on May 25-27, 2021. With the theme of "Building an Open and Shared Intelligent Connected Vehicle Ecosystem", CICV 2021 will organize conferences, exhibitions, test & demonstration, test rides and other diversified activities. CICV 2021 is expected to assemble about 100 speeches, 400 organizations and 1500 professional participants. Looking forward to your active participation in speech, exhibition and sponsorship with cutting-edge technologies and high-quality presentations. For more information, please visit www.cicv.org.cn. |
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| Report on Forecast of Talent Demand in ICV Industry is launched | |||
 On March 23, 2021, the Report on Forecast of Talent Demand in Intelligent Networked Vehicle Industry was launched. The Report predicts the demand for talents in the industry of intelligent and connected vehicles (ICVs) by illustrating the current situation of the ICV industry, talents and the supply of talents in universities. It analyzes the problems in the quantity and quality of ICV talents, and puts forward feasible suggestions in terms of the reform of university disciplines, curriculum setting, industry talent training and talent supply system. The report will help match the demand side of the industry and the supply side of talent training, promote the joint construction of high-quality talent teams by universities and enterprises, boost the high-quality innovation of the ICV industry, and support the transformation and upgrading of the automotive industry. |
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Automotive Innovation Sponsored by China SAE and published globally via Springer Nature, Automotive Innovation aims to be a world-class journal that provides abundant sources of innovative findings for automotive engineers and scientists. The journal is published quarterly, ensuring high-quality papers satisfying international standards. With the editorial board consisting of world-renowned experts, it has attracted readers from 72 countries and regions. The highest download of a single article wins more than 15,000. The journal is dedicated to the publication of peer-reviewed original papers and covers the principles, methodologies, designs, theoretical background and cutting-edge technologies in connection with the development of vehicle and mobility. The main topics include but are not limited to: energy-saving, electrification, intelligent and connected, safety and lightweight technologies. Editors-in-Chief Jun Li, Academician of CAE, President of China SAE, Professor of Tsinghua University Frank Zhao, President (2018-2020) of FISITA, President of Tsinghua Automotive Strategy Research Institute Executive Editor-in-Chief Prof. Mike Ma，Executive Chief Editor of Automotive Innovation, Professor of Jilin University, VP Technical FISITA |
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Paper submission and browse www.ChinaSAEJournal.com.cn www.springer.com/42154 Contacts: Ms. Lily Lu Tel: +86-10-50950101 Email: jai@sae-china.org |
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