PROJECT TITLE :

High Efficiency Bi-Directional Converter forFlywheel Energy Storage Application - 2016

ABSTRACT:

A bidirectional converter (BDC) is crucial in applications where energy storage devices are concerned. Such applications embrace transportation, battery less uninterruptible power system, flywheel energy storage systems, etc. Bidirectional power flow through buck and boost modes of operation together with high power density and potency is very important requirement of such systems. This paper presents a brand new BDC topology using a combination of fast turn-off SCR and insulated-gate bipolar transistor with a unique control logic implementation to achieve zero switching losses through zero voltage transition and zero current transition techniques. The proposed theme ensures zero switching power loss (ZSPL) for each buck and boost modes of operation of the BDC. The theme is simple and achieves ZSPL throughout both turn-on and flip-off of the devices ensuing in improved potency and reduced electromagnetic interference issues. The basic principle of operation, analysis, and style procedure are presented for each voltage buck and boost modes of operation of the proposed BDC topology. A design example is presented. Limitations of the system are highlighted. Experimental and simulation results obtained on a 4 kW, 340 V input prototype with a switching frequency of fifteen.four kHz are presented to verify the planning.