| Title |
High Efficiency H-Bridge Multilevel Inverter System Using Bidirectional Switches |
| Authors |
Hwa-Chun Lee ; Jung-Goo Hwang ; Sun-Pil Kim ; Woo-Seok Choi ; Sang-Hyuk Lee ; Seong-Mi Park ; Sung-Jun Park |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2014.28.10.016 |
| Keywords |
Multilevel Inverter ; Buck-Boost Converter ; H-Bridge ; Bi-Directional Switch |
| Abstract |
This paper proposes new 13-level inverter topology and DC/DC converter buck-boost structure topology for multilevel, compounding uni-directional and bi-directional switches, and proposes high-efficient multilevel inverter system in which the proposed two PCS(Power Conditioning System) was connected in series. In proposed multilevel inverter of forming a output 13-level phase voltage by using total 18 switching parts, Then bi-directional switch has a characteristic of reducing conduction loss and controlling the reactive power effectively by separating electrically from the neutral point. DC/DC converter for supplying in dependent 3 DC voltage to the proposed multi-level inverter generates 180-degree phase shifted PWM by the symmetrically combined structure of 2 buck-boost converter and twice switching frequency efficiency can be obtained, meanwhile, the converter can step up/down the output voltage and 20% output can be generated comparing the input voltage. This proposed system is verified with the simulation and laboratory test. |