Thus, the load will be protected by the output voltage of DVC and the a-mount of DC capacitor used for energy storage is minimized and the designed device is cost-effective.

• 该设计主要解决90%25以上的电压陷落，它充分利用电压陷落时电网所剩的电压，达到用最少量的直流电容量来储能的目的。