旋转变压器在SR电机低速启动时的应用
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摘要
开关磁阻电机在带载低速启动时,容易出现启动转速超调量过多、起动时转子出现拒转的现象。针对这一问题,本设计以纺织用三相开关磁阻电机为例,利用旋转变压器作为位置检测传感器,在电机低速启动时精确地检测出定转子的相对位置以及转速,最后完成了旋转变压器在开关磁阻电机上的安装以及实验,结果与霍尔传感器作比较,检测的转子位置更加精确,获取到转速的时间更短,启动时超调量明显降低,具有实用性。
When the switched reluctance motor is started at low speed, it is easy to have too much overshoot at starting speed and turn off the rotor when starting. Aiming at this problem, the design takes three phase switched reluctance motor as an example and uses rotary transformer as position detection sensor to accurately detect relative position and speed of stator and rotor when motor starts at low speed. Finally, the installation and experiment of resolver on switched reluctance motor is completed. The result shows that the rotor position is more precise compared with the Holzer sensor, and the time to get the rotational speed is shorter, which is practical.
When the switched reluctance motor is started at low speed, it is easy to have too much overshoot at starting speed and turn off the rotor when starting. Aiming at this problem, the design takes three phase switched reluctance motor as an example and uses rotary transformer as position detection sensor to accurately detect relative position and speed of stator and rotor when motor starts at low speed. Finally, the installation and experiment of resolver on switched reluctance motor is completed. The result shows that the rotor position is more precise compared with the Holzer sensor, and the time to get the rotational speed is shorter, which is practical.
引文
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[2]陈杰,吴瑞.基于AU6803的永磁同步电机转子位置检测电路设计[J].微电机,2016.
[3]王鹏飞,俞波.基于AU6802N1的电机测速系统[J].科技信息,2009.
[4]汪健.电路原理[M].北京:清华大学出版社,2008.
[5]陈运亮.基于无位置传感的开关磁阻电机试验系统研究[D].现代制造技术与装备,2016.
[6]梅雷,叶帮红,李红梅.基于旋变数字转换器的PMSM转子位置获取[J].微电机,2013.