储能/姿控一体化飞轮能耗试验研究

Experimental study on power loss of integrated energy storage and attitude control flywheel

给出了储能/姿控一体化飞轮在高速运转下能量损耗测试原理及方法,建立了飞轮能耗试验系统,进行了能耗试验,分析了飞轮能耗的组成及其影响因素,在试验的基础上,给出了降低飞轮系统能耗的方法。飞轮能耗包括机械损耗、风阻损耗及电损耗,其中比重最大的部分为轴承摩擦导致的机械损耗。提高真空度可以有效降低风阻损耗及电损耗,但机械损耗不受影响,机械损耗随转速升高而增大。在10 000 r/min以下飞轮能耗较低,飞轮具有较好的性能,当转速高于10 000 r/min后机械损耗急剧上升,需要采用磁轴承支撑来降低机械损耗。

The calcu the flywheel power ating method and the testing theory of power loss experiment were introduced, oss testing system was presented. By analyzing the component and influencing element of power loss in experiment, a approach of reducing power loss was given. Power loss of flywheel is composed of mechanical loss, wind loss and electric loss, in which mechanical loss caused by bearing friction is the most proportion. Our results show that the losses of wind and electricity can be decreased by enhancing vacuum degree, However, the mechanical loss is not influenced and it increases with the speed rising. When the speed is less than 10 000 r/min, the flywheel is better in capability because of the low mechanical loss. While the speed exceeds 10 000 r/min, the mechanical loss sharply increases. So the magnetic bearing is used to decrease the mechanical loss.