Session one

Online sessions of CTI Symposium China 2020

Session one: 16 September 2020
China time: 4:00-5:00 p.m. (CET 10:00-11:00 a.m.)
Presentation language: Chinese


ZHANG XingchunZHANG Xingchun
Technical Director
Shanghai Branch, JEE Power Systems Co., Ltd.

Speaker one:

CHEN Jiang
Director Motor R&D, FDM Shanghai R&D Center
Zhejiang Founder Motor Co., Ltd.


Flat wire motor: technical development of NEV traction motor

  • Demand characteristics of NEV traction motor
  • Optimization and platform design approach of NEV traction motor
  • Technical characteristics of flat wire motor and product development


There are different e-motors for NEV powertrain. According to the different classification method, the e-motor applications include PSM or ASM, high voltage or low voltage, air cooling, water cooling or oil cooling, single tooth winding or distributed winding, round wire motor or flat wire motor. Based on the analysis driving conditions, load profiles, application influences and social environment, the advantages, disadvantages and application recommendations of different kinds of e-motors are introduced in this article. Motor engineering design is a balancing process of multi-objective optimization based on certain material, manufacturing technology and time zone, the conflictions between e-motor performance and cost are illustrated. In case the cost is fixed, the balancing of different technical parameters needs to be considered to address the conflictions among the technical

features, such as the conflictions between peak performance and continuous performance, between peak torque and peak power and so on. As an emerging technology of NEV powertrain tractor motor type, flat wire motor has the obvious advantages for technical optimization to balancing the conflictions mentioned above. In comparison to round wire motor, the slot fill factor is much higher of flat wire motor, so that the motor power density is obviously increased, the resistance and heat generation in low speed range is decreased, the overall efficiency of the motor will be increased. The winding is more closely arranged of flat wire motor, so that the heat dissipation is quicker and the stator temperature is reduced. Meanwhile, the NVH behavior is also improved due to strengthened stator mode. Nevertheless, due to obviously higher AC effects of flat wire motor, it causes disadvantages in the speed range of higher than 14000rpm on performance, efficiency and thermal behavior in comparison to round wire motor, Specific analysis is needed case by case for detailed applications and requirements. Moreover, the flat wire motor platform approach shows more difficulties versus round wire motor for engineering designers. This paper focuses on the analysis and introductions on above mentioned topics in detail, FDM existing flat wire motor platform technology status will be also introduced, with main approach to change the active length together with rotor design optimization in order to realize the latform concept.

Speaker two:

ZHANG XiaofengZHANG Xiaofeng
Commercial Director in China
Protean Electric


In-wheel-motor: Opportunities for the powertrain of the future

  • Introduction to in-wheel motors
  • Design challenges & solutions
  • Opportunities for powertrain architecture compared to e-axles


Conventional powertrain configurations constrain design features of passenger cars such as the front and rear overhang and the packaging of the battery. In addition to the obvious advantages of independent torque control at each wheel and the weight and efficiency savings from removal of unnecessary drivetrain components (such as gearbox and transmission), in-wheel motors afford vehicle designers architecture opportunities at the powertrain level.

Protean has modelled the chassis structure and interior space of a range of electric vehicles to assess the potential benefits of using in-wheel motors rather than an E-Axle for  propulsion. A number of options are considered including modifications to the wheelbase and use of the space freed up by removing traditional powertrain components to package the battery.


As the world’s leading provider of lubricant solutions, Castrol commenced its China operation in 1989 and is now a key player in the premium lubricant market. In 1998, Castrol set up its first lubricant blending plant in Shenzhen Shekou. In 2010, Castrol opened its first China Technology Centre in Shanghai Pudong. With pioneering technical expertise and rich worldwide operation experience, Castrol is committed to meeting the diverse needs of customers in China.

Castrol is highly involved in sponsoring global pinnacle football and racing events. It sponsored the 2010 FIFA World Cup South Africa and 2014 FIFA World Cup Brazil, as well as the 2008 and 2012 European Championships. In the field of motorsport, Castrol EDGE is the designated oil for Audi, Ford, Honda and many more. It helped the teams and drivers achieve winning performance in top-level international racing events such as WRC and Dakar Rally. In 2017, BP Castrol worked with Renault to claim a strong return to F1. In addition to the fuel and lubricants supply by BP Castrol, it will also support the team’s ambition to lay claim to the F1 World Championship in the next five years.

For a long time, Castrol has been chosen as the partner and recommended brand of many of the world’s leading automobile manufacturers, such as Audi, Jaguar Land Rover, Volvo and Ford. Castrol collaborates closely with its partners to co-develop pioneering technologies, customize high-quality lubricants and is always committed to providing better products and service for Chinese consumers.

Castrol (Shanghai) Management Co., Ltd.
Floor 3, Building 5, No. 255 Guiqiao Road, Shanghai, China


L. Gore & Associates is a global materials science company dedicated to transforming industries and improving lives. Since 1958, Gore has solved complex technical challenges in demanding environments — from outer space to the world’s highest peaks to the inner workings of the human body. With more than 10,500 Associates and a strong, team-oriented culture, Gore generates annual revenues of $3.7 billion.

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