Capacitor voltage control for MPPT range expansion and efficiency improvement of grid-connected Quasi Z-Source Inverter

Park, Jong-Hyoung; Kim, Heung-Geun; Nho, Eui‐Cheol; Chun, Tae-Won

doi:10.1109/ipec.2010.5542002

Cited by 8 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar control strategies are retrofitted to various applications, e.g., grid-connected photovoltaics [73]- [76], distributed generation [4], [77], excitation field control for synchronous machines [78], and single-phase uninterruptible power supply [79].…”

Section: B Modeling and Controlmentioning

confidence: 99%

Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques

Siwakoti

Peng

Blaabjerg

et al. 2015

IEEE Trans. Power Electron.

322

181

View full text Add to dashboard Cite

Impedance-source networks cover the entire spectrum of electric power conversion applications (dc-dc, dc-ac, ac-dc, ac-ac) controlled and modulated by different modulation strategies to generate the desired dc or ac voltage and current at the output. A comprehensive review of various impedance-sourcenetwork-based power converters has been covered in a previous paper and main topologies were discussed from an application point of view. Now Part II provides a comprehensive review of the most popular control and modulation strategies for impedancesource network-based power converters/inverters. These methods are compared in terms of theoretical complexity and performance, when applied to the respective switching topologies. Further, this paper provides as a guide and quick reference for researchers and practicing engineers in deciding which control and modulation method to consider for an application in a given topology at a certain power level, switching frequency and demanded dynamic response.

show abstract

Section: B Modeling and Controlmentioning

confidence: 99%

Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques

Siwakoti

Peng

Blaabjerg

et al. 2015

IEEE Trans. Power Electron.

322

181

View full text Add to dashboard Cite

show abstract

“…to increase the active power injected to the grid when the error is positive [15]. The reactive power is set to zero in our situation.…”

Section: B Ac-side Output Controlmentioning

confidence: 99%

Modeling and controller design of quasi-Z-Source inverter with battery based photovoltaic power system

Liu

Abu‐Rub

et al. 2012

2012 IEEE Energy Conversion Congress and Exposition (ECCE)

View full text Add to dashboard Cite

A Photovoltaic (PV) power generation system based on quasi-Z-Source inverter (qZSI) with energy storage is presented. A dynamic small-signal model of qZSI with battery is established. Further, the battery power and current doubleloop controllers are designed to manage the battery state of charge (SOC). Meanwhile, an improved PQ decoupling control is achieved to smooth the grid-injected power. The obtained simulation and experimental results certify the validity of the proposed control schemes, which provides an efficient method for future energy-storage PV power generation systems.

show abstract

“…Besides the advantages inherited from the ZSIs [18], the qZSIs have such merits as reduced passive component ratings, continuous input current and a common DC rail between the source and the inverter. qZSIs suit very well for renewable energy systems [19][20][21][22][23] because of excellent performance and availability of all the requirements, in particular for the photovoltaic (PV) systems. These inverters are capable of performing maximum power point tracking (MPPT) and inversion with no need for an extra DC/DC converter.…”

Section: Introductionmentioning

confidence: 99%

Single phase three‐level neutral‐point‐clamped quasi‐Z‐source inverter

Husev¹,

Roncero‐Clemente

Romero‐Cadaval

et al. 2015

IET Power Electronics

159

View full text Add to dashboard Cite

This study presents a novel three-level neutral-point-clamped quasi-Z-source inverter in the single-stage buck-boost multilevel inverter family. The topology was derived by combining the properties of the quasi-Z-source network with those of a three-level neutral point clamped inverter. It features such advantages as low voltage stress of the switches, single-stage buck-boost power conversion, continuous input current, short-circuit withstandability and low total harmonic distortion of the output voltage and current. The authors present a steady state analysis of the topology along with a special modulation technique to distribute shoot-through states during the whole fundamental period. Component design guidelines for a singlephase case study system are described. All the findings have been confirmed by simulations and experiments. The topology could be recommended for applications requiring continuous input current, high input voltage gain and enhanced quality of the output voltage.

show abstract

Capacitor voltage control for MPPT range expansion and efficiency improvement of grid-connected Quasi Z-Source Inverter

Cited by 8 publications

References 5 publications

Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques

Impedance-Source Networks for Electric Power Conversion Part II: Review of Control and Modulation Techniques

Modeling and controller design of quasi-Z-Source inverter with battery based photovoltaic power system

Single phase three‐level neutral‐point‐clamped quasi‐Z‐source inverter

Contact Info

Product

Resources

About