关键词: 车辆工程, 永磁缓速器, 制动力矩分级, 设计, 电磁分析

Abstract: A new concept that the brake torque of permanent magnet retarder can be divided and controlled in grades was introduced. Then the structure scheme of brake torque graded permanent magnet retarder was designed. The structural parameters of various parts of the graded permanent magnet retarder were determined by theoretical calculation, according to the vehicle installation requirements. The brake torque when the permanent magnet retarder was working under different working conditions was simulated by using Maxwell 3D analysis soft. The results show that the designed brake torque graded permanent magnet retarder complies with the design requirements, whose effect of grading of brake torque was obvious.

Key words: vehicle engineering, permanent magnet retarder, grading of brake torque, design, electromagnetic analysis