Journal ArticleDOI
A High Step-Up Converter With a Voltage Multiplier Module for a Photovoltaic System
TLDR
In this article, an asymmetrical interleaved high step-up converter was proposed for a front-end photovoltaic system, which is composed of a conventional boost converter and coupled inductors.Abstract:
A novel high step-up converter is proposed for a front-end photovoltaic system. Through a voltage multiplier module, an asymmetrical interleaved high step-up converter obtains high step-up gain without operating at an extreme duty ratio. The voltage multiplier module is composed of a conventional boost converter and coupled inductors. An extra conventional boost converter is integrated into the first phase to achieve a considerably higher voltage conversion ratio. The two-phase configuration not only reduces the current stress through each power switch, but also constrains the input current ripple, which decreases the conduction losses of metal-oxide-semiconductor field-effect transistors (MOSFETs). In addition, the proposed converter functions as an active clamp circuit, which alleviates large voltage spikes across the power switches. Thus, the low-voltage-rated MOSFETs can be adopted for reductions of conduction losses and cost. Efficiency improves because the energy stored in leakage inductances is recycled to the output terminal. Finally, the prototype circuit with a 40-V input voltage, 380-V output, and 1000- W output power is operated to verify its performance. The highest efficiency is 96.8%.read more
Citations
More filters
Journal ArticleDOI
Evaluation of a grid‐connected reduced‐component boost multilevel inverter (BMLI) topology
TL;DR: In this paper , a reduced-component switched-capacitor boost multilevel inverter (SC-BMLI) topology is proposed for off-grid and on-grid applications.
Journal ArticleDOI
Single-Ended High-Efficiency Step-up Converter Using the Isolated Switched-Capacitor Cell
TL;DR: In this paper, the authors proposed a novel high step-up DC-DC converter using an isolated switched capacitor cell, which uses the proposed transformer and employs the switched-capacitor cell to enable integration with the boost inductor.
Journal Article
Predictive Direct Power Control of a Grid Connected Three-Phase Voltage Source Inverter for Photovoltaic Systems
TL;DR: In this article, the control of a three-phase voltage source inverter (VSI) for a grid-connected photovoltaic (PV) system is discussed.
Journal ArticleDOI
An Asymmetrical Step-Up Multilevel Inverter Based on Switched-Capacitor Network
Amir Taghvaie,Ahmad Alijani,M. Ebrahim Adabi,Mohammad Rezanejad,Jafar Adabi,Kumars Rouzbehi,Edris Pouresmaeil +6 more
TL;DR: In this paper, a self-balanced boost Switched-Capacitors Multilevel Inverter (SCMLI) is proposed, which is able to create a nearly sinusoidal voltage waveform with a maximum voltage of up to 45 times that of the input voltage DC source.
Proceedings ArticleDOI
Analysis of non-isolated two phase interleaved high voltage gain boost converter for PV application
TL;DR: In this article, a two phase interleaved non-isolated boost converter was proposed to achieve high voltage gain for photovoltaic (PV) application. But, the converter was not designed for the use of coupled inductor in input side of boost converter voltage stress across the switch reduced.
References
More filters
Journal ArticleDOI
Power-Electronic Systems for the Grid Integration of Renewable Energy Sources: A Survey
Juan Manuel Campos Carrasco,Leopoldo G. Franquelo,Jan T. Bialasiewicz,Eduardo de Teresa Galván,R.C.P. Guisado,Ma.A.M. Prats,Jose I. Leon,Narciso Moreno-Alfonso +7 more
TL;DR: New trends in power electronics for the integration of wind and photovoltaic (PV) power generators are presented and a review of the appropriate storage-system technology used for the Integration of intermittent renewable energy sources is introduced.
Journal ArticleDOI
Optimization of perturb and observe maximum power point tracking method
TL;DR: In this article, the perturb and observe (PO) algorithm is used in photovoltaic (PV) systems to maximize the PV array output power by tracking continuously the maximum power point (MPP) which depends on panels temperature and on irradiance conditions.
Journal ArticleDOI
Review of Nonisolated High-Step-Up DC/DC Converters in Photovoltaic Grid-Connected Applications
Wuhua Li,Xiangning He +1 more
TL;DR: A general conceptual circuit for high-step-up, low-cost, and high-efficiency dc/dc conversion is proposed to derive the next-generation topologies for the PV grid-connected power system.
Journal ArticleDOI
Cascaded DC-DC converter connection of photovoltaic modules
Geoffrey R. Walker,Paul Sernia +1 more
TL;DR: In this paper, the authors proposed an alternative topology of nonisolated per-panel dc-dc converters connected in series to create a high voltage string connected to a simplified dc-ac inverter.
Journal ArticleDOI
Implementation of a DSP-controlled photovoltaic system with peak power tracking
TL;DR: A simple method of tracking the maximum power points (MPPs) and forcing the system to operate close to these points is presented, and the principle of energy conservation is used to derive the large- and small-signal model and transfer function.
Related Papers (5)
Review of Nonisolated High-Step-Up DC/DC Converters in Photovoltaic Grid-Connected Applications
Wuhua Li,Xiangning He +1 more