Harmonic Reduction Method for a Single-Phase DC&amp;#x2013;AC Converter Without an Output Filter

Georgakas, Konstantinos G.; Vovos, Panagis N.; Vovos, N.A.

doi:10.1109/tpel.2013.2286918

Cited by 26 publications

(12 citation statements)

References 15 publications

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“…This converter operates at a high switching frequency (e. g. 20 KHz). The duty cycle D is being continuously calculated under the above mentioned frequency using Pulse Width Modulation (PWM) technique [20], and it is given by:…”

Section: A Topology and Operation Of The Power Conditionermentioning

confidence: 99%

See 1 more Smart Citation

A Method for Power Conditioning with Harmonic Reduction in Microgrids

Bouloumpais¹,

Vovos²,

Georgakas³

et al. 2024

RE&PQJ

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This paper presents a control method ofRenewable Energy Sources (RES) to reduce the harmonic content of the distribution system to which are connected, such as a Microgrid. By this method the RES is acting as a Power Conditioner and its supplying system consists of a buck-boost converter connected back-to-back to a polarity swapping inverter. A RES or a Distributed Generator (DG) such as a microturbine is synchronized to the distribution system, which is assumed to be distorted by a high-order voltage harmonic. Utilizing the proposed method, the RES not only exports its output power to the grid, but also reduces the existing harmonic distortion, improving voltage quality at the Point of Common Coupling (PCC). Simulations in Matlab/Simulink platform have been performed in order to verify the effectiveness of the suggested approach to reduce harmonic content.

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Section: A Topology and Operation Of The Power Conditionermentioning

confidence: 99%

“…The converter configuration proposed in [20] has been used in this work in order to reduce the harmonic content at the PCC, so that the total harmonic distortion (THD) index is decreased. This is achieved by using the proposed power conditioner connected with a RES.…”

Section: Introductionmentioning

confidence: 99%

A Method for Power Conditioning with Harmonic Reduction in Microgrids

Bouloumpais¹,

Vovos²,

Georgakas³

et al. 2024

RE&PQJ

View full text Add to dashboard Cite

show abstract

“…Even though in case of constant dc-link inverters, the whole system is heavy, bulky and costly, the control process of this type of inverters is rather simple. The dc part and the ac part of the constant dc-link inverters are decoupled, which make these kind of inverters expendable with more multi-level stages to obtain the desired output dc-link voltage [81]. However, the pulsating dc-link inverters are vulnerable to input variations, which affect the dynamics of the system.…”

Section: Dc-link Advantage Disadvantagementioning

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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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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“…The converter configuration proposed in [15] and already used in [16] has been used in this work in order to reduce the current harmonic content of the grid, so that the Total Harmonic Distortion (THD) index is decreased to below acceptable limits. It consists of a dc/dc buck-boost converter connected to the grid through a simple polarity changing inverter.…”

Section: Introductionmentioning

confidence: 99%

Current Harmonics Compensation in Microgrids Exploiting the Power Electronics Interfaces of Renewable Energy Sources

et al. 2015

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This work presents a method of current harmonic reduction in a distorted distribution system. In order to evaluate the proposed method a grid with high-order current harmonics is assumed. The reduction of current distortion is feasible due to the pulse modulation of an active filter, which consists of a buck-boost converter connected back-to-back to a polarity swapping inverter. For a practical application, this system would be the power electronic interface of a Renewable Energy Source (RES) and therefore it changes a source of harmonics to a damping harmonics system. Using the proposed method, the current Total Harmonic Distortion (THD) of the grid is reduced below the acceptable limits and thus the general power quality of the system is improved. Simulations in the MATLAB/SIMULINK platform and experiments have been performed in order to verify the effectiveness of the proposed method.

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Harmonic Reduction Method for a Single-Phase DC–AC Converter Without an Output Filter

Cited by 26 publications

References 15 publications

A Method for Power Conditioning with Harmonic Reduction in Microgrids

A Method for Power Conditioning with Harmonic Reduction in Microgrids

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

Current Harmonics Compensation in Microgrids Exploiting the Power Electronics Interfaces of Renewable Energy Sources

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