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JPEEE1459 A Novel Soft-Switching Multiport Bidirectional DC–DC Converter for Hybrid Energy Storage System
1. A NOVEL SOFT-SWITCHING MULTIPORT
BIDIRECTIONAL DC–DC CONVERTER FOR HYBRID
ENERGY STORAGE SYSTEM
ABSTRACT:
A novel multiport isolated bidirectional dc–dc converter for hybrid battery
and supercapacitor applications is presented, which can achieve zero voltage
switching for all switches in the whole load range. The bidirectional power flow
between any two of the ports is free, and the circulating power is low for the well
matching of the transformer voltages of all time regardless of the voltage variations
of the battery and supercapacitor.Moreover,the current ripples are greatly
decreased by interleaved control, which is good for battery and supercapacitor. The
converter topology and the operation principle are introduced. Detailed analysis on
soft-switching of all switches is given. On the basis of theoretical analysis, the
principle and method for parameter designing are provided. A hybrid energy
management strategy combining bus voltage control and energy management of
the energy storage devices is proposed and the control scheme is presented.
2. BLOCK DIAGRAM:
Low voltage side Multiport
TOOLS USED:
Mp lab
Orcad/pspice
converter
Dc voltage side
Driver unit
Pulse generator
12v dc
5v dc