直流无刷电机驱动的高压便携式空压机研制

Design of direct-drive air compressor drived by permanent magnet brushless DC motor

研究开发了一种用直流无刷电机驱动的便携式空压机,对该机高低压气缸的布置形式及其对电机效率的影响进行了分析和基于Simulink的仿真研究.仿真结果表明,当高低压气缸以对置形式布置时,空压机的负载转矩波动较小,电机相电流较小,因此效率较高.经实验测试和分析可知,实验结果与仿真结果基本相符,新研发样机的效率远高于感应电机驱动的空压机的效率.为了减少对置式空压机不平衡往复惯性力引起的振动,将水平方向的往复惯性力转移到垂直方向,由此可降低水平方向的振动.另一半的惯性力则转移到了垂直方向,通过在压缩机的底座上安装橡胶阻尼垫,可以大幅降低垂直方向的振动.

The direct-drive air compressor drived by the permanent magnet brushless DC motor（BLDCM） was designed and manufactured. The volume and weight of the direct-drive air compressor drived by the permanent magnet BLDCM were little, and its efficiency was high. The load of two different air compressors was analyzed, and the system was simulated in Simulink. The result showed that torque fluctuation of dual-same movement pistons compressor and fluctuation of current rotation speed were less. Test was carried out. The result showed that rotation speed fluctuation of dual-same movement pistons compressor was less. The efficiency of direct-drive air compressor drived by BLDCM was much higher than that of compressor drived by induce motor. Control measurement of reciprocating inertial force was analyzed. In order to reduce the vibration of the direct-drive air compressor, half of the horizontal reciprocating inertial force was transferred to the perpendicularity, which can reduce the vibration horizontal vibration. The damp underlay was installed on the foundation of the direct-drive air compressor, which can reduce the perpendicularity vibration.