Dual output DC-DC quasi impedance source converter

Abstract

A double output port DC-DC quasi impedance source converter (q-ZSC) is proposed. Each of the outputs has a different voltage gain. One of the outputs is capable of bidirectional (four-quadrant) operation by only varying the duty ratio. The second output has the gain of traditional two-switch buck-boost converter. Operation of the converter was verified by simulating its responses for different input voltages and duty ratios using MATLAB SIMULINK software. Its average steady-state output current and voltage values were determined and used to determine the ripples that existed. These ripples are less than 5% of the average steady-state values for all the input voltage and duty ratio ranges considered.

Modernisation of DC-DC converter topologies for solar energy harvesting applications: A review

“…Additionally, when buck-boost converters operate in continuous conduction mode (CCM), the input current is smooth and continuous with very little ripple. The voltage and current stress placed on components by two-switch buck-boost converters is significantly lower than that of single-switch buck-boost converters [22], [42], [53], [81], [87], [97], [102], [103], [115], [117], [119], [125], [133], [138], [142], [146], [164], [168], [222], [225], [263], [264], [266], [288], [289], [308]- [320]. Ahmed et al [315] present a twoswitch non-inverting buck-boost converter with the possibility for extra current storage.…”

“…The Z-source comprises two identical inductors and two capacitors, in which the modernization of this configuration has been fluent and conducted to achieve better performance [87], [102], [122], [166], [291], [300], [314], [366]- [368]. A modified Z-source DC-DC converter is proposed by [367].…”

Review of DC-DC boost converter derived topologies for renewable energy applications

“…One of the output port converters is capable of providing bidirectional (four-quadrant) operation by only varying the duty ratio. The second output has the voltage gain of traditional two-switch buck-boost converter [19]. Similar to Z source converter derived topologies, switched boost converters are proposed in the literature to obtain higher boost with lower duty ratio for nano and microgrid applications [20]- [22].…”

Using Y-source network as a connector between turbine and network in the structure of variable speed wind turbine

“…This converter has many different features. The interest of this converter in equal duties is different to other converters and has more freedom to (the number of turns of coils and switch timing (𝑑 𝑠𝑡 )) adjust the interest of voltage compare to classic impedance source converters [34], [47]. Theoretical point of view, by adjusting the number of turns in coils 𝑑 𝑠𝑡 to any value, we can see the increase in voltage [23].…”