Reviews of Feedback-Based Over-Load Protection Algorithms

Abstract

Overload protection for electric facilities is a compulsory equipped function in general. Traditional methods may cut the power connection immediately for protection. In this case, however, the facilities may not return to usual work even the malfunction is removed. For this reason, alternative algorithms have been reported using feedback mechanism to resolve this problem. This paper reviews two major schemes based on a feedback principle. The first one uses a feedback-controlling high switching LC algorithm. The second one applies the resonant switching technique with a feedback control strategy. Both approaches achieve a constant-maintained load current for protection purpose. These will be investigated and discussed for more details, and then the conclusions will be made based on the comparison for each other.