Patent ID: 8193784
Filing Date: 2012-06-05
Classification: H02M

Abstract:
1. A bidirectional DC to DC converter having a first operational mode and a second operational mode, comprising: a first terminal pair that connects the converter to a first electric circuit having a power source, the first terminal pair including a positive terminal and a negative terminal; a second terminal pair that connects the converter to a second electric circuit, the second terminal pair including a positive terminal and a negative terminal; an accumulation element for temporary accumulation of electric energy; and a switching circuit connected to the first terminal pair, the second terminal pair, and the accumulation element, wherein electric energy is transferred from the first electric circuit to the second electric circuit via the accumulation element in the first operational mode, wherein the switching circuit maintains a controlled voltage drop across the first terminal pair to harvest electric energy from the first electric circuit available at the controlled voltage drop; and electric energy is transferred from the second electric circuit to the first electric circuit via the accumulation element in the second operational mode.