this paper proposes a flexible power electronic transformer (fpet) for the application in the micro-grids. the low frequency transformer is usually used at the point of common coupling (pcc) to connect the low voltage grid and utility network to each other. the conventional 50hz transformer results in enhanced low voltage-grid power management system during grid-connected operation. in this pap...

Optical vortices have drawn extensive research interests due to their widespread applications in various fields. Therefore, it is of great significance modulate optical endow them with more properties. Herein, the autofocusing and self-healing properties are introduced via implementing circular cubic phase modulation. The propagation dynamics modulated vortex analyzed, experimental results matc...