摘要
为满足磁悬浮控制力矩陀螺低功耗控制要求,在分析无刷直流电机采用H_PWM_L_ON控制方式稳速在30 000 r/min的基础之上,针对小电枢电感超高速电机,提出了一种基于Buck技术的新型控制方法。给出了系统整体研究方案,并建立了仿真模型。理论分析和实验表明采用这种新控制方法,导通绕组中电流波形没有PWM电流分量,显著降低了由电流跳变引起的涡流损耗,从而降低了电机功耗。实验测试电机功耗降低了18%。证明了此方法的正确性。
To satisfy control performance of the lower power on magnetically suspended control moment gyro, a new type control method based on Buck technology is proposed for the small armature-inductance super high speed motor. This paper is found that the speed of the BLDCM is kept at 30000r/min by using H-PWM-L-ON control mode, designs the study scheme of the whole system and modeling the simulation. The theoretical analysis and experimental result are used to verify the effectiveness and feasibility of the proposed method to lower the power of motor in respect that there is not PWM current in the conducting winding coil and the eddy-current loss caused by the current jump is reduced obviously. At last, 18 percent of the motor power is lowered by testing the actual motor.
出处
《微电机》
北大核心
2008年第5期49-52,共4页
Micromotors
基金
国家863计划航天领域项目(2003AA741022)
