摘要
根据工程机械行走系统运行特点,建立其轮边电力驱动方式,满足永磁同步电机工作在低速大转矩和高速恒功率状态,确定永磁同步电机的弱磁控制算法。研究基于弱磁控制的速度和转差率相结合的电子差速控制策略,协调驱动电机牵引时的差速。最后建立前轮轮边电力驱动装载机试验台架,永磁同步电机提供的最大牵引力为29KN,实际测得最大牵引力为26 KN,电动轮效率达到89.7%,且转向平稳转向。
Permanent magnet synchronous wheel driven was adopted for the walking system of hybrid construction machinery to achieve traction running, variable frequency speed regulating and braking. Firstly, walking curve for electric traction drive according to the operation characteristics of the walking system is studied. Then, the field weakening control strategy for PMSM is established to realize the constant output torque when the speed is low and the constant output power when the speed is high, meanwhile, two aspects were taken into consideration in the studying for electronic differential control, namely driven tire speed and slip ratio. In the end, front wheel electric hybrid driven for loader was built. The results showed that the maximum traction force of wheel electric driven loader is 29 kN. The actual measurement of the equip- ment is 26 KN. The efficiency of permanent magnet synchronous wheel driven is 89.7% and the loader achieved the steady turning by the e- lectronic differential control.
出处
《世界科技研究与发展》
CSCD
2012年第6期875-879,共5页
World Sci-Tech R&D
基金
国家科技支撑计划项目(2011BAG04B02)资助
关键词
电动轮驱动
永磁同步电机
弱磁
电子差速
wheel electric driven
permanent magnet synchronous motor
field weakening
electronlc differential control
