It is possible to realize supercapacitor charging and discharging devices through BUCK-BOOST converter. In this paper alternative system of charging and discharging using supply side VS inverter for charging and supercapacitor side inverter for discharging of supercapacitor is investigate. In such device using H-bridge topology of Pulse Width regulated inverter a storage capacitors can be distributed in system as at input as also output and that allow to provide more efficient storage. Using in supercapacitor side a VS inverter allow to obtain reverse discharging of capacitor operating supply side inverter in quasi-BOOST regime. In the paper operational regimes of such device are described as also main expressions for calculation of processes are obtained. It’s shown that most efficient operation and control case should be at boundary current shape of the primary winding of transformer. At some proper operational parameters it’s possible to obtain maximum of transmitted power; for that also a voltage level of the secondary side supercapacitor have to be installed on proper level dependent on transformation ratio of transformer.