铁路机车直驱牵引高效永磁电机关键技术研究

近年来,我国铁路事业发展取得了举世瞩目的成绩,安全和效率一直是铁路行业发展的两大关键问题,而作为动力装置的牵引电动机的性能是影响效率的关键因素。目前,我国普遍采用三相异步牵引电动机,但异步电动机体积大、重量高、损耗多、噪音不易控制,直接制约电机效率的提高。同步直驱永磁牵引电动机恰恰具有以上异步电动机不具备的优点。

轨道交通永磁电机牵引系统关键技术及发展趋势

介绍了轨道交通领域永磁电机牵引系统的特点和优势,概述了其发展的国内外现状,详细说明在轨道交通领域永磁牵引系统需要攻克的关键技术,最后对永磁牵引系统发展趋势进行了展望。

Properties of Brushless DC Machine Induced by Permanent Magnets Applied to a Traction Drive

The paper presents a mathematical model ofbrushless DC machine induced by permanent magnets. Its construction uses the classical model of permanent magnet synchronous machine and induced model of power inverter using the serraphil form. The results of the computer simulation were presented for such states： startup, work under active constant load and the behavior of the machine in terms of exponential and stepping change of the power inverter＇s control angle.