Novel positive integrated converter

This paper presents an integrated positive synchronous bidirectional buck/boost converter (IPSBBBC), which can be applied to renewable energy (RE) and electric transportation (ET) systems. The proposed converter implements different energy sources, achieves positive output voltage without supplementary transformer, accepts bidirectional energy flow, and it allows discharge or recharge the storage unit by using another external source. The proposed converter accomplishes a compact, modular and reliable design, which lets implementing state of the art classical or high performance controllers. Operation principle is analyzed at different working operation modes using idealized waveforms, fixed frequency and continuous conduction mode. In addition, it is also shown numerical and practical results obtained with a 100W test bed prototype.