Grid-connected quasi-z-source inverter with battery

Shinde, Umesh; Kottagattu, Sagar; Kadwane, Sumant G.; Gawande, S. P.

doi:10.3906/elk-1703-123

Cited by 5 publications

(3 citation statements)

References 20 publications

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“…A voltage or current that is periodic but not purely sinusoidal will have higher frequency components in it, contributing to the harmonic distortion of the signal. By application of Fourier analysis in our study, we obtain about 1.51% THD for the one-phase system and a fixed value of load, since 2.23%-8.8% THD was reported in [2,15,24]. Figures 5b and 5c illustrate the states of switches on the H bridge side and show that Q 3 and Q 4 are working in the same time interval while Q 4 and Q 5 will be active simultaneously in the next time interval to produce a sinusoidal voltage value for the load.…”

Section: One-phase Systemsupporting

confidence: 51%

“…The VSI main circuit cannot be used for the CSI, and vice versa, and other main circuits are not interchangeable and their reliability is affected by EMI noise. Various studies have been done in analyzing inverter structures in order to connect to microgrid applications [1][2][3]. Inverters can be divided into two categories: isolated and nonisolated structures.…”

Section: Introductionmentioning

confidence: 99%

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THD minimization for Z-source-based inverters with a novel sinusoidal PWMswitching method

Ghaderi¹

2019

Turk J Elec Eng & Comp Sci

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This paper presents a modified sinusoidal pulse width modulation (SPWM) switching method for one-phase and investigated two-phase impedance-source inverter structures. The proposed structure generates pulses for a quasi-Z-source converter and this block produces a unilateral voltage sine wave in the block's output. This signal is applied to the inverter as its input wave. For this purpose, the novel SPWM method is proposed for power switches while being switched complementarily. Two power switches are used in the structure to generate the pure sinusoidal output voltage and to minimize total harmonic distortion (THD), which is an essential parameter in inverter design. The results show that the proposed method generates the pure sinusoidal voltage and current signals for resistive and inductive loads and pure voltage and improved current waves for capacitive loads in comparison with existing techniques, since the THD of the output voltage and current signals is strongly affected by the dynamic loads. This method leads to final cost improvement and reduction of the size of the system with fewer number of components, which are essential parameters for renewable energy resource applications. A mathematical model is validated with the 2017a version of MATLAB/Simulink and 1.51% and 1.33% THD values are reported for low and high power loads, respectively, in the one-phase structure and 0.95% and 0.87% in the two-phase system. Finally, a 120 W prototype has been implemented and tested. A sine-wave with 620 Vac peak to peak amplitude and 50 Hz frequency has been gained in the inverter's output and the quality of the voltage and current waveforms has been evaluated for different two 1.8 k Ω and 600 Ω resistive loads in the one-phase structure. Experimental results confirm all mathematical and simulation results.

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Section: One-phase Systemsupporting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

THD minimization for Z-source-based inverters with a novel sinusoidal PWMswitching method

Ghaderi¹

2019

Turk J Elec Eng & Comp Sci

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“…The multilevel inverters are now used for majority of power system applications [4,5]. A class of Quasi Z source inverter (qZSI) with the acceptance of symmetrical shoot through is been addressed in [6,7]. In conventional voltage source inverter (VSI) the obtainable ac output voltage is usually lower than the dc input voltage, therefore an additional dc-dc boost converter is needed to generate the desired ac output voltage [7] And this extra boost converter increases the complexity of power converter and this is replaced by the qZSI [8].…”

Section: Introductionmentioning

confidence: 99%

Investigations for Quasi-Z Source Based Cascaded H-bridge Inverter With Unequal Input Voltages

Mahevash¹

2019

helix

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Owing to the advantages of the distributed generators and hybrid energy system, the inverter with more than one dc source is now increasingly investigated. This paper presents a control scheme for single phase quasi Z source inverter (qZSI) network based on Cascaded H-bridge five level based boost inverter using the Simple Boost Control (SBC). The harmonic analysis is carried out and simulated results are presented for equal and unequal dc input voltages across the inverter. The successful application SBC for closed loop control of qZSI based converter is the primary contribution of this work. The theoretical analysis of the switching states, PWM control scheme is presented with harmonic analysis.

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Overview of Technical Specifications for Grid-Connected Microgrid Battery Energy Storage Systems

Khalid

Stevenson

Sarwat³

2021

IEEE Access

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Grid-connected quasi-z-source inverter with battery

Cited by 5 publications

References 20 publications

THD minimization for Z-source-based inverters with a novel sinusoidal PWMswitching method

THD minimization for Z-source-based inverters with a novel sinusoidal PWMswitching method

Investigations for Quasi-Z Source Based Cascaded H-bridge Inverter With Unequal Input Voltages

Overview of Technical Specifications for Grid-Connected Microgrid Battery Energy Storage Systems

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