摘要：在轨道牵引传动系统中，制动性能的好坏直接决定着列车能否平稳准确的停车。目前，轨道列车主要采用电-空联合的制动方式，该制动方式存在停车位置不准、切换时引起加速度突变等问题。该文对永磁同步牵引电机控制进行了研究，提出一种适合于永磁同步牵引系统的零速电制动控制策略，在列车制动到零速前完全采用电制动，从而实现列车精准停车。通过仿真和实验验证了该策略的正确性与可行性。
关键词：牵引传动系统；永磁同步电机；零速电制动；最大转矩电流比

Abstract: In high power traction drive system, performance of the braking system directly determines whether the train can stop smoothly and accurately. At present, for rail train, mainly braking mode is the combination of air brake and electric brake. There are some problems in the braking mode, such as the parking position is not accurate and the acceleration is abrupt when switching. The control of permanent magnet synchronous traction motor was studied in this paper, and a zero speed electric braking control strategy suitable for permanent magnet synchronous traction system was proposed. The electric braking was used before the train braking to zero speed, so as to achieve precise train parking. Simulation and experimental results verified the correctness and feasibility of the proposed strategy.
Key words: traction drive system; analytical method; permanent magnet synchronous motor(PMSM); zero speed electric braking; maximum torque per ampere(MPTA)