Bridgeless converter with input resistance control for low-power energy harvesting applications

In this study, a new switched-mode bridgeless converter operating in the discontinuous conduction mode is presented along with an input resistance control scheme. Through feedback control, the converter-battery circuitry synthesises variable line resistor with regenerative capability is intended for large-scale electromagnetic-based energy harvesting systems. For instance, the circuit can operate as a vehicular regenerative damper through converting vibration energy into battery charge. Analysis of the power converter in various switching modes is presented along with implementation of a control method for synthesising a desired input resistance. Experimental and simulation results are presented that highlight operations and power efficiencies of the proposed power converter along with its control scheme.