The paper introduces the principle of the active power filter briefly, presents a new method for detecting and producing distortioncurrent applied to the APF and provides experimental waveform.
简单介绍电力有源滤波器的工作原理，提出了检测与产生畸变电流的新方法及其电路，并给出了实验波形。
2
The interface strategy is to have a "distortion portal" opened at the current mouse coordinates when the mouse button is down.
接口策略是当鼠标键按下时，在鼠标当前坐标打开“失真门户”。
3
Then, each pass of the main loop checks for events, resets the draw state, draws the circular "portal" windows, then animates their distortion back to the current time frame.