对两相静止坐标系下的电流Iα， Iβ 进行2s-2r变换后得到两相旋转坐标系下的电流Id， Iq， 分析可知变换后的电流为直流，且Id 的值为0，Iq 的值-220v。(After the 2s-2r transformation of the current I and I in the two-phase stationary coordinate system, the current Id and Iq are obtained in the two-phase rotating coordinate system. The analysis shows that the converted current is DC, and the value of Id is 0, and the value of Iq is -220v.)