Three-phase four-wire grid-connected PV power supply with accurate MPPT for unbalanced nonlinear load compensation

Hosseini, Seyed Hossein; Danyali, Saeed; Goharrizi, Amin Yazdanpanah; Sarhangzadeh, Mitra

doi:10.1109/isie.2009.5216180

Cited by 11 publications

(9 citation statements)

References 7 publications

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“…When the reference voltage is as in Eq. (8), the waveform of a-phase modulation output by the D/A is as shown in Figure 12a, which is saddle wave and is consistent with Figure 9a; Figures 12b and 12c respectively show the three-phase current waveform and the spectrum of the a-phase current. These figures indicate that the peak of three-phase current is 2.8 A, and the spectral analysis of the a-phase current shows that the THD rate is 1.8%.…”

Section: Simulation and Experimental Resultssupporting

confidence: 77%

New three-dimensional space vector pulse width modulation of PV-AF system based on the gh$\gamma $ coordinate system

ZHOU¹,

LIU²,

WEI³

et al. 2015

Turk J Elec Eng & Comp Sci

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Abstract:The photovoltaic power generation and active filter (PV-AF) system can realize photovoltaic grid-connected power regulation, and meanwhile it can also improve the power quality of power grid effectively. The four-leg gridconnected inverter has successfully been used in the three-phase four-wire system. In this paper, a three-dimensional space vector pulse width modulation (3D-SVPWM) method based on the gh γ coordinate system for a four-leg inverter has been proposed. As the switching vectors of the four-leg inverter are in the three-dimensional space, it is difficult to realize the complex modulation process. In order to simplify the modulation process, the reference vector is placed into gh γ coordinates in the proposed modulation strategy, and then the vectors are selected and the duration times are acquired directly by a group of intermediate variables, which could be obtained by linear transformation of the coordinates. As the intermediate variables are used, the modulation can be easily implemented by the proposed modulation strategy without excessive mathematical calculations. The simulation and experimental results all confirmed the validity and effectiveness of this strategy.

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Section: Simulation and Experimental Resultssupporting

confidence: 77%

New three-dimensional space vector pulse width modulation of PV-AF system based on the gh$\gamma $ coordinate system

ZHOU¹,

LIU²,

WEI³

et al. 2015

Turk J Elec Eng & Comp Sci

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show abstract

“…Parasitic rrent I C1 0. The arasitic currents i C2 (1) ation current i k4 by the fault current i Z r compensation is vectors and , d in rotating d, q T CONTROLLED e control algorithm on current i k4 . This nts (i k1 , i k2 , and i k3 ) s of the converter urrents (i k1 , i k2 , and i k3 ) need to be controlled.…”

Section: Converter Operation Without Fourth Legmentioning

confidence: 99%

“…1,2,3) is determined by the mpedances Z fj and Z f4 and by the nd 4 th terminal of the converter, oltages u k14 , u k24 , and u k34 (see r as a system connected to both, respectively, disposes by three . it generates three compensation d, the four-leg converter itself is r modulated outputs.…”

mentioning

confidence: 99%

A novel least norm-based PWM for a four-leg earth fault compensator

Komrska

Peroutka

Matuljak

2014

IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society

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This paper proposes a novel P voltage-source converter operating as an ea compensator in power grids with unearthed earthed neutral. For proper earth fault c converter has to draw zero-sequence curren phase grid. Its control is based on t proportional-resonant controllers. The main modulator is to generate from three outputs control block four modulation signals enter order to minimize a dc-link voltage of the c norm method is used to eliminate high differen the modulation signals. Keywords-four-leg converters; lest norm m compensationI.

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“…The reference current calculation process is necessary to meet objectives of multifunctional operation of the converter. There are several techniques to obtain the reference currents [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Control of a multifunctional 3-phase 4-wire grid connected converter using adaptive hysteresis current controller

Prommeuan

Kinnares

Charumit

2014

2014 17th International Conference on Electrical Machines and Systems (ICEMS)

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This paper proposes control of a three-leg fourwire grid-connected converter with multifunction namely power transfer to grid and active power filter for nonlinear loads. Reference currents are calculated on the basis of the p-q theory for a power transfer function and derived from load currents for an active filter function. An adaptive hysteresis current controller is used for tracking the reference currents. As a consequence, the proposed system provides fast response and nearly constant switching frequency. The proposed system is verified by simulation using MATLAB/Simulink.

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Three-phase four-wire grid-connected PV power supply with accurate MPPT for unbalanced nonlinear load compensation

Cited by 11 publications

References 7 publications

New three-dimensional space vector pulse width modulation of PV-AF system based on the gh$\gamma $ coordinate system

New three-dimensional space vector pulse width modulation of PV-AF system based on the gh$\gamma $ coordinate system

A novel least norm-based PWM for a four-leg earth fault compensator

Control of a multifunctional 3-phase 4-wire grid connected converter using adaptive hysteresis current controller

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