A Single-Stage Microinverter Without Using Eletrolytic Capacitors

Hu, Haibing; Harb, Souhib; Kutkut, N.H.; Shen, Z. John; Batarseh, Issa

doi:10.1109/tpel.2012.2224886

Cited by 194 publications

(68 citation statements)

References 18 publications

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“…In [27], the ripple reduction circuit allows an additional power port for enhancing the dynamic response of the whole system. In [28], a single switch, diode and capacitor circuit is added in parallel with the input capacitor of a microinverter to reduce the overall capacitance requirement. The common challenge of all these methods is that the components used in the auxiliary circuit are under a high voltage stress, which could be as high as the dc-link voltage.…”

Section: )mentioning

confidence: 99%

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Use of a Series Voltage Compensator for Reduction of the DC-Link Capacitance in a Capacitor-Supported System

Wang

Chung

2014

IEEE Trans. Power Electron.

189

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Section: )mentioning

confidence: 99%

“…The common challenge of all these methods is that the components used in the auxiliary circuit are under a high voltage stress, which could be as high as the dc-link voltage. Moreover, the impact of the active filters on the hold-up behavior of the dc-link has not been explored in [15]- [28].…”

Section: )mentioning

confidence: 99%

Use of a Series Voltage Compensator for Reduction of the DC-Link Capacitance in a Capacitor-Supported System

Wang

Chung

2014

IEEE Trans. Power Electron.

189

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“…Microinverters are power electronic devices that convert DC power from a low power source, such as a solar panel, to AC power, such as that used in homes [3]. The main advantage of using a microinverter system to a string inverter system is that microinverters isolate light obstructions and faults from solar panels in the entire system [4].…”

Section: Introductionmentioning

confidence: 99%

Design of a highly efficient microinverter

Nezamuddin

Crespo

Santos

2016

2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)

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-This paper proposes a grid-tied single-phase photovoltaic (PV) microinverter consisting of five-level fourswitch (5L-4S) DC-AC converter fed by an isolated fly-back DC-DC converter. The microinverter utilizes a split-coil inductor to produce five levels of pulse width modulation (PWM) compared to the three levels of PWM using conventional four-switch topologies. These implementations reduce losses by up to 39% compared to a conventional topology. The results show that the proposed design improves performance throughout the switching frequency spectra with various loads. The theoretical expectations are validated with simulation and experimental results.

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“…Unfortunately, E-caps are also known to be very vulnerable under high temperature operation, and they may bring design difficulties if long lifetime is desired for the power converter, e.g. in PV and light-emitting diode (LED) applications [9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…Although all of them can decouple the dc-link ripple power, film capacitors are always preferred for ripple energy storage because of their much lower equivalent series resistance (ESR) and higher power density as compared to inductors. Some more three-phase based singlephase power decoupling circuits can be found in [13][14][15][16][17] and the basic operating principle is the same.…”

Section: Introductionmentioning

confidence: 99%

DQ reference frame modeling and control of single-phase active power decoupling circuits

Tang

Qin

Blaabjerg

et al. 2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Power decoupling circuits can compensate the inherent double line frequency ripple power in single-phase systems and greatly facilitate their dc-link capacitor design. Example applications of power decoupling circuit include photovoltaic, light-emitting diode, fuel cell, and motor drive systems. This paper presents the dq synchronous reference frame modeling of single-phase power decoupling circuits and a complete model describing the dynamics of dc-link ripple voltage is presented. The proposed model is universal and valid for both inductive and capacitive decoupling circuits, and the input of decoupling circuits can be either dependent or independent of its front-end converters. Based on this model, a dq synchronous reference frame controller is designed which allows the decoupling circuit to operate in two different modes because of the circuit symmetry. Simulation and experimental results are presented to verify the effectiveness of the proposed modeling and control method.

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A Single-Stage Microinverter Without Using Eletrolytic Capacitors

Cited by 194 publications

References 18 publications

Use of a Series Voltage Compensator for Reduction of the DC-Link Capacitance in a Capacitor-Supported System

Use of a Series Voltage Compensator for Reduction of the DC-Link Capacitance in a Capacitor-Supported System

Design of a highly efficient microinverter

DQ reference frame modeling and control of single-phase active power decoupling circuits

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