Dynamic modeling of a sinusoidal inverter based on ZETA converter working in DCM for PV arrays

Viero, Renan C.; Lopez, Henrique F. M.; Zollmann, Cesar A.; Reis, Fernando B. dos

doi:10.1109/iecon.2010.5674986

Cited by 10 publications

(12 citation statements)

References 5 publications

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“…However, designing controller with a moving RHP zero is always a challenge. Modeling of zeta dc/dc converter and parameter selection to eliminate RHP zero was earlier reported in [24][25]. It is concluded that zeta converter can achieve higher bandwidth, and good closed loop stability.…”

Section: Introductionmentioning

confidence: 89%

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A Single-Stage CCM Zeta Microinverter for Solar Photovoltaic AC Module

Surapaneni

Rathore

2015

IEEE J. Emerg. Sel. Topics Power Electron.

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Microinverter mounted on each photovoltaic (PV) panel, i.e., microinverter is gaining popularity due to increased energy harvest. This paper proposes a novel single stage zeta microinverter for PV applications. The proposed topology is based on zeta converter with high frequency (HF) transformer isolation and a single low side switch on the primary side of transformer. The most distinctive feature of the proposed inverter is its ability to work in continuous conduction mode (CCM) over a wide load range, which results in high efficiency, reduced current stress, and components' rating. All the secondary switches operate at line frequency, thus reducing switching losses significantly. A comprehensive study of the proposed microinverter including steady-state analysis and design has been reported. A 220 W microinverter was designed, developed, and tested in the laboratory. Experimental results are demonstrated to verify the CCM operation of the inverter and its performance over a wide load range. Index Terms-Photovoltaic (PV), AC module, Zeta, Microinverter, Continuous Conduction Mode (CCM).I.

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Section: Introductionmentioning

confidence: 89%

“…It is concluded that zeta converter can achieve higher bandwidth, and good closed loop stability. A DCM mode zeta converter based inverter was earlier reported in [25]. The inverter power rating was limited to 80W.…”

Section: Introductionmentioning

confidence: 99%

A Single-Stage CCM Zeta Microinverter for Solar Photovoltaic AC Module

Surapaneni

Rathore

2015

IEEE J. Emerg. Sel. Topics Power Electron.

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“…With the fast growth of renewable energy markets, many single-stage isolated inverters have been developed for single-phase grid-connected applications [1][2][3][4][5][6][7][8][9]. Among them, the zeta inverter [7][8][9] has been gaining attention due to the advantages of its low grid current ripple and low circuit component count, compared to other single-stage inverters such as flyback inverters [1][2][3][4] and Cuk inverters [5,6]. Of course, although the zeta inverter has large current ripples at the dc side, similar to the flyback inverter, it has been widely adopted for single-phase photovoltaic applications [7][8][9] due to its simple and flexible circuitry.…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency Design and Control of Zeta Inverter for Single-Phase Grid-Connected Applications

Choi

Yang

2019

Energies

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The conventional zeta inverter has been used for single-phase grid-connected applications. However, it has high switching losses to operate at high switching frequency in the continuous conduction mode (CCM). To address this drawback, this paper suggests a high-efficiency zeta inverter using active clamp and synchronous rectification techniques. The proposed inverter utilizes the active clamp circuit for reducing switching losses. The non-complementary switching scheme is adopted for not only clamping the switch voltage stresses, but also alleviating the circulating energy. In addition, the synchronous rectification is implemented for reducing the body diode conduction of power switches. By using the silicon carbide (SiC) metal oxide semiconductor field effect transistors (MOSFETs), the switching performance of the proposed inverter is improved. Its operation principle and control strategy are presented. A 220-W prototype has been designed and tested to evaluate the performance of the proposed inverter.

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“…The capacitor Cfly released the power to output side and protected the shorted load [5]. Both circuits can work in the continuous conduction mode (CCM) and the discontinuous conduction mode (DCM) [6] [7]. Section II introduces the basic converter operation.…”

Section: Introductionmentioning

confidence: 99%

Comparison on performance between synchronous single-ended primary-inductor converter (SEPIC) and synchronous ZETA converter

Woranetsuttikul

Pinsuntia

Jumpasri

et al. 2014

2014 International Electrical Engineering Congress (iEECON)

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This paper presents the performance comparison of synchronous single-ended primary-inductor converter (SEPIC) and synchronous ZETA focusing on the converter efficiency and the output waveform quality. The conventional SEPIC and ZETA converters operated in Buck and Boost modes were modified to the synchronous SEPIC and synchronous ZETA converters to improve the converter efficiency. The operating conditions were setup where the duty cycle was operated from 0.3 to 0.7 for covering buck-boost modes at the continuous current mode. Two switching frequencies at 20 kHz and 40 kHz were operated to compare the effect of switching loss and conduction loss where the efficiency was concerned. Finally, the converter efficiency and the ripple factor of the output voltage were concluded.

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Dynamic modeling of a sinusoidal inverter based on ZETA converter working in DCM for PV arrays

Cited by 10 publications

References 5 publications

A Single-Stage CCM Zeta Microinverter for Solar Photovoltaic AC Module

A Single-Stage CCM Zeta Microinverter for Solar Photovoltaic AC Module

High-Efficiency Design and Control of Zeta Inverter for Single-Phase Grid-Connected Applications

Comparison on performance between synchronous single-ended primary-inductor converter (SEPIC) and synchronous ZETA converter

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