Simulation study of double input z-source DC-to-DC converter

Abstract

The recent trend in distributed power generation system is combination of one or more energy sources like solar and fuel cells also wind has been tied together. Attempt made in a double input dc-dc converter topology used to couple the energy sources using z-source converters. The z-network topology has its own unique features and capable of buck or boost operation depending on whether it is voltage or current fed drives. Analyze the various states of z-source dc-dc converter completed using computer simulation in Matlab/simulink Software. Simulated waveforms of resistive load voltage and currents and diodes currents are presented.

Voltage regulation of the Y‐source boost DC–DC converter considering effects of leakage inductances based on cascaded sliding‐mode control

“…So the order of the converter to be modelled can be reduced by using (5) and (6). Hence the state variables are considered as follows:…”

“…By implementing a multi‐level converter, a voltage multiplier, or a cascading topology, the output voltage may be enhanced by active and passive elements. Using a large number of devices not only increases the total cost of the system but also reduces the power density and efficiency [6, 7]. Therefore, the DC–DC Y‐source converter with boost structure, as shown in Fig.…”

Non‐electrolytic‐capacitor boost converter with non‐pulsating ripple‐free output current

“…Moreover, it makes the dynamic voltage restorer (DVR) more reliable against short circuit situations and increases the compensation capacity of DVR 11 . The application of the Z‐network has also achieved double input voltage source 12 . A 3‐Z‐network converter that realizes higher voltage gains than traditional boost converter is proposed in Zhang et al 13 and a novel converter based on the Z‐network realizes the same voltage gains with lower duty cycles of the switching devices 14 …”

“…Compared to the proposed NEC converter, the lifetime and power density of the existing converters in the literature 9,11–13,24,25 are lower due to the fact that their ECs have a short life time and are bulky. Moreover, due to the parasitic resistances of the converters mentioned above, the voltage gains of the converters are far lower than their theoretical values 26,27 .…”