Takasaki, "A transformerless D-STATCOM based on a multivoltage cascade converter
requiring no dc sources," IEEE Trans.
A Hybrid Cascade Converter
Topology With Series-Connected Symmetrical and Asymmetrical Diode-Clamped H-Bridge Cells.
Shu, "A traction three-phase to single-phase cascade converter
substation in an advanced traction power supply system," Energies, vol.
Wang, "The random PWM based bi-directional buck-boost cascade converter for electric vehicles", in Proc.
Oggier, "Bidirectional power flow with constant power load in electric vehicles: a non-linear strategy for buck+boost cascade converters", in Proc.
"Classification, terminology, and application of the modular multilevel cascade converter
(MMCC)," IEEE Trans.
Efficiency diagram for classic and proposed cascade converters
Such efficiency improvement is interesting to demonstrate since a cascade converters connection introduces additional parasitic resistances in contrast with singe converters.
Figure 11 presents the experimental waveforms of the inductors and input current in the cascade converters connection, where the complementary behavior is observed.