摘要
介绍了电梯用电磁制动器的结构与特点,分析了其工作特性。针对电磁制动器高耗能的缺点,本文提出了一种降低电磁制动器能耗的设计方法。这种设计方法就是将制动器工作气隙为0时(维持时)的电压降低为直流35V,制动器工作气隙最大时(起动时)的电压是直流110V。本文应用ANSYS Maxwell软件建立了制动器二维有限元模型,得到了制动器起动和维持时的电磁吸力特性曲线,仿真结果表明本文设计的电梯用节能电磁制动器具有大电流起动、小电流维持的优点。以10层楼高的乘客电梯用电磁制动器为例,节能制动器较传统制动器节电80%左右,节能效果显著。
This paper introduced the construction and features of electromagnetic brakes for elevators,and analyzed the brakes’ working characteristics.A method was presented to reduce the energy consumption by the brakes.The method is to cut down the holding voltage of a brake to 35V DC which is used to keep the brake with a zero working air gap.The starting voltage is 110V DC which to start the brake with a maximal air gap.ANSYS Maxwell was employed to establish a two-dimensional finite element model for the brake,and its electromagnetic attraction characteristic curves were obtained,which demonstrated that energy-saving brakes had advantages such as high-current starting and low-current holding.For a ten-story passenger elevator,the energy-saving brake can save electricity up to 80%.
出处
《微电机》
北大核心
2012年第7期31-33,共3页
Micromotors
关键词
电梯
电磁制动器
节能
大电流起动
小电流维持
elevator
electromagnetic brake
energy-saving
high-current starting
low-current holding
