高速铁路是一项全新技术,是一项庞大而又极其复杂的系统工程,而高速动力车又是高速列车的核心技术。在高速动力车研制中需要完成的任务是: (1)向高速列车可靠地提供足够的牵引功率,保证列车高速运行; (2)具备足够的制动能力并辅以可靠的控制技术,保证列车的行车安全; (3)采用流线化外形,减少列车的运行阻力; High-speed railway is a new technology, is a huge and extremely complex systems engineering, and high-speed electric car is the core technology of high-speed train. The tasks that need to be accomplished in the development of high-speed electric vehicle are: (1) Provide enough traction power to high-speed train reliably to ensure high-speed train operation; (2) Have enough braking capacity and supplemented by reliable control technology to ensure the train Of the traffic safety; (3) the use of streamlined shape, reducing the train’s operational resistance;