A new DC-DC converter based on voltage-lift technique

Summary This paper presents a new family of extendible hybrid and nonhybrid step‐up/‐down switched capacitor DC‐DC converter structures benefiting from numerous advantages like lower voltage stress on switched capacitors, fewer power components like switches, and higher voltage gain compared with other converters. In the proposed family, it is aimed to use diodes rather than switches, since they are simpler, cheaper, and smaller than switches, which in turn makes the proposed converters cost‐, weight‐, and size‐effective structures. Also, because of the existence of multiple switched capacitors, more power can be transferred from the input source to the load (output) in the proposed topologies. In general, the proposed hybrid and nonhybrid structures are more suitable for a vast variety of industrial applications like regulating output voltage of renewable energy sources, specifically in high power ratings and high voltage gains. For validating the proposed ideas, thorough comparisons and experiments are presented.

Section: Introductionmentioning

confidence: 99%

New family of expandable step‐up/‐down DC‐DC converters with increased voltage gain and decreased voltage stress on capacitors

Abbasi

Tousi

et al. 2020

“…A study on the nonlinear dynamical characteristic for current mode control boost converter in continuous conduction mode (CCM) has been described by N. Zamani et al But only integral controller was used for the modeling and implementation purpose . The modeling of a boost converter by using state space averaging (SSA) method in CCM and discontinous conduction mode (DCM) mode operation have been discussed by F. M. Shahir et al M. Zhioua et al studied a boost converter, which is fed by a photovoltaic (PV) generator and supplying a constant voltage to load. Where the overall system behavior is observed under parameter changes, and a series of bifurcation diagrams are computed from the circuit.…”

Section: Introductionmentioning

confidence: 99%

Modeling and analysis of complex dynamics for dSPACE controlled closed‐loop DC‐DC boost converter

Banerjee

Ghosh

Padmanaban

2019

Summary DC‐DC switched mode power converter circuits are time varying and nonlinear in nature. This work analyzes the modeling and complex dynamics in voltage mode controlled (VMC) of the Boost converter in continuous conduction mode (CCM) of operation by using continuous‐time model. The switching converter is governed by naturally sampled constant frequency pulsed signals. Mathematical modeling of the boost converter numerically developed by using differential equations and tested in simulation software. The switching converter may exhibit fundamental, quasiperiodic, and chaotic oscillations by the systematic changing of converter's variables. The stability of the system investigated through the locus of the complex eigenvalues and the characteristic multipliers locating the onset of Hopf bifurcation. The one‐periodic orbit loses its stability via Hopf bifurcation, and the resulting attractor is a quasiperiodic orbit. A dSPACE controlled boost converter prototype hardware fabricated to establish the experimental studies in this work. Both the computational and experimental results have been included to validate the set analysis. It is observed that the route to chaos reached by the slow‐scale instability in this proposed work.

“…Because of existence of a lot of components, the efficiency of converter is significantly low. By MohammadzadehShahir et al, the high voltage gain converter is presented based on the lift voltage, which can produce high voltage at low duty cycle. But it requires two power switches, a lot of components, and a large inductor to operate in the CCM mode.…”

Section: Introductionmentioning

confidence: 99%

A single switch high step-up DC-DC converter with three winding coupled inductor

Mahmoudi

Babaei

2018

Self Cite

Summary A new high gain DC‐DC converter based on single switch and three‐winding coupled inductor is presented in this paper. Existence of a three‐winding coupled inductor in suggested topology has led to lift voltage gain by low number of windings' turn ratio. As a result, the main advantage of the proposed converter is to produce a high voltage gain without great values of duty cycle. The passive clamped technology is used in the proposed converter. It causes better performance for proposed converter by recycling the leakage inductance energy as well as restricting voltage stress by reducing great voltage spikes. In this paper, performance analysis and mathematical equations of the proposed converter are explained. In addition, variations of voltage gain as a result of leakage inductance and voltage and current stresses of power devices are studied, too. Moreover, performance of the suggested converter and the previously presented high gain ones are compared with together. Lately, a 200‐W prototype is constructed, and the experimental results approve the effectiveness of the proposed converter.