In 2009, China formally proposed the "going out" strategy for high-speed rails. Since 2013, Premier Li Keqiang’s recommendation of high-speed rail to China has almost become a necessary task for his foreign visit. The Prime Minister became the "high-speed rail spokesperson" in the eyes of the people and was called "super salesman" by the media. The Chinese "high-speed trains" have made outstanding achievements.
Super strong lineup - 16 leaders from central and Eastern Europe are invited to sit in China's high-speed rail
On November 24, 2015, Premier Li Keqiang used the "high-speed train" to describe his 16+1 cooperation and sent an invitation to guests who came to Suzhou to attend the Fourth China-Central and Eastern European Leaders Meeting. Safe "China High Speed Rail.
At 11 o'clock on the November 25th, 2015, Li Keqiang together with the leaders of 16 countries in Central and Eastern Europe boarded the high-speed train from Suzhou to Shanghai.
At 11:22, the high-speed train arrived at Shanghai Hongqiao Station. On the platform, Li Keqiang took photos with leaders of 16 countries in Central and Eastern Europe and shook hands with each other.
This is praised as the “cost-effective” endorsement of Premier Li Keqiang’s highest cost performance for China’s “high-cost” high-speed rail: On one high-speed rail line, the Chinese premier invited the leaders of 16 Central and Eastern European countries to ride together!www.greatmagtech.com
The 22-minute high-speed railway line of 91 kilometers witnessed the premier "high-speed rail diplomacy". At a press conference afterwards, he asked the reporter why the Chinese high-speed rail was "pushed" to the world. Li Keqiang simply answered: "Because it represents the comprehensive level of China's equipment technology."
Running test of traction motor of rare-earth permanent magnet material in China
Recently, China's first permanent magnet high-speed rail with the TQ-600 permanent-magnet synchronous traction motor developed by CRRC Zhuzhou Electric Co., Ltd. has passed the first-round line operation test evaluation. This means that China's high-speed rail power is undergoing revolutionary changes, and it has become one of the few countries in the world that has mastered the "permanent magnet and high-speed rail" traction technology.
According to Zhai Caisong, manager of the permanent magnet motor R&D department of Zhuzhou Electric Motor Co., Ltd., TQ-600 Permanent Magnet Synchronous Traction Motor is a subproject of the National 863 Program “Key Technology and Equipment Development Project for High Speed Railway”. By adopting the world's new rare earth permanent magnet material, the world's permanent magnet loss is effectively overcome. At the same time, its ingeniously designed bearing heat dissipation structure can effectively reduce the temperature rise of the bearing and ensure the safe and reliable operation of the traction power. It can be said that China's high-speed rail traction power. "The cutting edge artifact."www.greatmagtech.com
Compared with the YQ-365 asynchronous traction motor of the existing CRH380A high-speed EMU, the weight of the TQ-600 permanent magnet synchronous traction motor is reduced by 35%, while the efficiency will be increased by more than 3%, and the energy saving will be more than 10%. A series of 8 high-speed trains will be used to make a round trip once a day to and from the Beijing-Shanghai line. After loading the “tip artifacts”, it will save more than 1 million kwh per year.
After experiencing "DC" and "AC", the world's traction technology for rail transit vehicles is moving toward the 3.0 version of "permanent magnet" drive technology. As a product with completely independent intellectual property rights in China, the successful development of TQ-600 permanent magnet synchronous traction motor not only opened the prelude of China's high-speed rail “permanent magnet drive era”, but also won the first chance for China's high-speed rail to participate in international competition.www.greatmagtech.com
It is understood that after an eight-segment high-speed rail is driven by a TQ-600 permanent magnet motor, the power of a single motor is increased by 65% compared to the current 365kW AC motor, reaching 600kW, and the maximum power is 635kW. The total number of motors can be reduced from 24 to 13 sets. The power density of a single motor is increased by 31.5%, the weight is reduced by 1/3, and the total weight of the train motor is reduced by 3165kg, which is of great significance in saving energy and reducing consumption. The application of rare earth permanent magnetic materials has great significance.