Copyright © The 13th International Symposium on Linear Drives for Industry Application
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Invited Talk 7:
Application of Linear Motor in China's Rail Transit
The application of linear motor in rail transit is mainly used in wheel rail metro and maglev vehicles. China has commercial applications in wheel rail metro, medium and low-speed maglevs, and high-speed maglevs. The application of linear motor in China can best reflect the current engineering application status of linear motor in rail transit.
There are mainly two technical routes of linear metros: self-cooling and forced air cooling, which are both applied in China. Japanese linear motor vehicle adopts self-cooling linear motor, which is applied in Guangzhou Metro Line 4, 5 and 6; Bombardier vehicle adopts forced air-cooled linear motor, which is applied in Beijing airport line.
CRRC has completed the development of medium and low speed maglev platforms with short stator self-cooling linear induction motors of 100 km/h, 120 km/h and 160 km/h; Chengdu Xinzhu Co., Ltd. has introduced the built-in maglev system from Borg company in Germany, which adopts water-cooled linear motor.
In China, the development of high-speed maglev and low vacuum pipeline maglev is in full swing. CRRC has developed 200 km/h and 600 km/h normal conduction high-speed maglev prototype vehicles, and Southwest Jiaotong University’s 620 km/h HTS Maglev prototype vehicle has come off the assembling line. Shanghai-Hangzhou, Greater Bay Area, Kunming to Lijiang, Hefei to Wuhu and other lines are planned to use high-speed maglev. Because of the increase of speed and power, long stator linear synchronous motor is used in high-speed maglev.
In addition to the selection of motor types, engineering problems such as system matching, reliability and engineering production capacity often affect the drive system. Combined with the current situation of domestic rail transit linear motor, this speech will report the wheel rail linear motor, medium and low speed maglev linear motor, high-speed maglev linear motor topological structure, main advantages and challenges, basic parameters, structural characteristics, application status and development trend.
Yunfeng He. Doctor, Professorate Senior Engineer, Director of Maglev Product Research Institute of CRRC Zhuzhou Motor Co., Ltd.
He graduated from the college of electrical engineering of Hunan University in 1997, and in-service Doctor of Engineering of Zhejiang University in 2014. He has been engaged in the research and development of traction motor for rail transit for more than 20 years.
Responsible for the development of traction motors such as China's first metro train, the first intercity EMU, 863 project high-speed EMU and Fuxing 160 km/h power centralized EMU.
Led the team to develop all the domestic linear motors mentioned in this speech except for Guangzhou metro lines 4, 5 and 6, including medium and low speed maglev short stator linear motors with speeds of 100 km, 120 km and 160 km/h, long stator linear motors with speeds of 200 and 600 km/h, the localization of forced air-cooled linear motors for Beijing airport line and embedded maglev water-cooled linear motors, the engineering of coreless permanent magnet linear motor and high temperature superconducting coreless linear motor.