abstract
- In this work, the use of the double-dual buck converter, working as a transformer-less inverter is analysed. The analysis presented here shows that the designed inverter based on double-dual buck topology is able to reduce the leakage currents that could appear as common mode currents flowing in the paths to ground. This is a natural benefit of this topology that makes it especially attractive for grid-tied applications, e.g. for power injection provided by renewable energy sources, as well as for electric vehicle applications (vehicle to grid). The theoretical analysis of the behaviour of the leakage current is presented based on the common-mode model and the equivalent circuits of the double-dual buck converter working as a transformer-less inverter. The converter efficiency analysis is also presented considering a conventional modulation scheme. Finally, the performance of the system is evaluated by means of an experimental prototype and steady-state tests. © IET Conference Proceedings. All right reserved.