High Step-Up DC–AC Inverter Suitable for AC Module Applications

Arshadi, Sayed Abbas; Poorali, Behzad; Adib, Ehsan; Farzanehfard, Hosein

doi:10.1109/tie.2015.2480387

Cited by 82 publications

(42 citation statements)

References 21 publications

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“…Grid-connected inverters can interface both the PV source and the grid side. On the PV side, it can extract the available maximum power from the PV panels, whereas it transfers sinusoidal current to the grid side [29][30][31]. The power injected to the grid needs to fulfill the requirement of the grid, which is highly dependent on the performance of the grid-connected PV inverters.…”

Section: Transformerless Grid-connected Topologies With Step-up Abilitymentioning

confidence: 99%

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A Review on Transformerless Step-Up Single-Phase Inverters with Different DC-Link Voltage for Photovoltaic Applications

et al. 2019

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Photovoltaic (PV) energy has been competitive in power generation as an alternative to fossil energy resources over the past decades. The installation of grid-connected solar energy systems is expected to increase rapidly with the fast development of the power electronics technology. As the key to the interface of the PV energy and the grid, power converters should be reliable, efficient and comply with the grid requirements. Considering the nature of PV energy, the power conversion should be flexible (e.g., high step-up DC-DC conversion and harmonic-free DC-AC conversion). Accordingly, many power electronic converters have been reported in literature. Compared with isolated inverters, transformerless inverters show great advantages. This paper thus presents an overview of the transformerless step-up single-phase inverters for PV applications based on the dc-link configurations. Grid-connected PV inverters are classified as constant dc-link voltage structures, pseudo-dc-link voltage structures, pulsating dc-link voltage structures and integrated dc-link voltage structures. The discussion on the composition of different dc-link structures is presented, which provides guidance to select appropriate transformerless inverter topologies for PV applications.

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Section: Transformerless Grid-connected Topologies With Step-up Abilitymentioning

confidence: 99%

“…dc-dc converters are used to step up the PV output voltage to the required voltage level in order to inject power into the grid [45]. There is a dc-link capacitor between the dc part and the ac part, which decouples these two sides [29]. Afterward, these two sides can be controlled separately.…”

Section: Constant Dc-link Voltagementioning

confidence: 99%

A Review on Transformerless Step-Up Single-Phase Inverters with Different DC-Link Voltage for Photovoltaic Applications

et al. 2019

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“…The operating voltage measured by the photovoltaic system with MPPT technique is very less and not suitable for high voltage applications. To overcome this difficulty, the DC-DC converter topology is used to boost the voltage level from low to high based on the load condition, a steady DC voltage is needed for LED lighting applications [22]. There are many DC-DC converters have been proposed in literature like boost, buck, buck-boost, SEPIC, CUK, etc.…”

Section: Introductionmentioning

confidence: 99%

Solar Powered LED Lighting with High GainBoost Converter

Padmavathi

Sudhakar

2018

JGE

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High gain converters are extensively used in the solar powered Light-Emitting Diode (LED) lighting systems due to its several advantages, such as high voltage conversion, reduced voltage stress of power semiconductor devices as compared to conventional DC-DC converters. Solar energy is one of the sustainable energy resources and is able to collect the energy by using Photo-Voltaic (PV). In order to achieve high efficiency the PV should operate at maximum power point (MPP). This paper deals with the design of high gain DC-DC converter for solar powered LED lighting applications. The proposed configuration developed by voltage lift technique and has advantages of high voltage conversion ratio, economical, simple control and suitable for low and medium power applications. Different modes of the proposed topology are explained in detail with corresponding voltage and current equations. A simple Perturb and Observe (P&O) MPPT controller is applied for the proposed topology to control the output voltage from its non-linear characteristics of PV module. Simulation of high gain DC-DC converter and conventional DC-DC converter with 120 watts of LED load has been developed using MATLAB/Simulink software. Load has modeled by 120 LEDs in seriesparallel combination by supplying 3.5 V & 20 mA for each LED. The results

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“…Isolated converters can be used to achieve high voltage gain. However, for low power applications, nonisolated converters are preferred due to their higher efficiency, good power density and lower cost [7], [8]. Changes in electric codes also favours the use of nonisolated converters for low power solar PV systems.…”

Section: Introductionmentioning

confidence: 99%

ZVS–ZCS High Voltage Gain Integrated Boost Converter for DC Microgrid

Sathyan

Suryawanshi

Singh

et al. 2016

IEEE Trans. Ind. Electron.

109

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A non-isolated soft switched integrated boost converter having high voltage gain is proposed for the module integrated PV systems, fuel cells and other low voltage energy sources. Here a bidirectional boost converter is integrated with a resonant voltage quadrupler cell to obtain higher voltage gain. The auxiliary switch of the converter, which is connected to the output port acts as an active clamp circuit. Hence ZVS (zero voltage switching) turn on of the MOSFET switches are achieved. Coupled inductor's leakage energy is recycled to the output port through this auxiliary switch. In the proposed converter, all the diodes of the quadrupler cell are turned off with ZCS (zero current switching). This considerably reduces the high frequency turn off losses and reverse recovery losses of the diodes. ZCS turn off of the diodes also remove the diode voltage ringing caused due to the interaction of the parasitic capacitance of the diodes and the leakage inductance of the coupled inductor. Hence to protect the diodes from the voltage spikes, snubbers are not required. The voltage stress on all the MOSFETs and diodes are lower. This helps to choose switches of low voltage rating (low RDS(ON )) and thus improve the efficiency. Design and mathematical analysis of the proposed converter are made. A 250W prototype of the converter is built to verify the performance.

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High Step-Up DC–AC Inverter Suitable for AC Module Applications

Cited by 82 publications

References 21 publications

A Review on Transformerless Step-Up Single-Phase Inverters with Different DC-Link Voltage for Photovoltaic Applications

A Review on Transformerless Step-Up Single-Phase Inverters with Different DC-Link Voltage for Photovoltaic Applications

Solar Powered LED Lighting with High GainBoost Converter

ZVS–ZCS High Voltage Gain Integrated Boost Converter for DC Microgrid

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