Investigations on solar PV grid interfaced power generating system using two-level twelve-pulse double bridge converter

Hussain, Ikhlaq; Singh, Bhim

doi:10.1109/iciinfs.2014.7036648

Cited by 15 publications

(1 citation statement)

References 16 publications

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“…It features an open circuit module voltage (V oc ) of 36.3 V and a 7.84 A short circuit module current (I sc ). Taking into account the PV array's open circuit voltage V OCA = 200 V and power P mpA = 1 kW, the PV modules connected in a series string are estimated as [41]…”

Section: Selection Of Solar Pv Arraymentioning

confidence: 99%

A Single DC Source Five-Level Switched Capacitor Inverter for Grid-Integrated Solar Photovoltaic System: Modeling and Performance Investigation

et al. 2023

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Boost converters and multilevel inverters (MLI) are frequently included in low-voltage solar photovoltaic (PV) systems for grid integration. However, the use of an inductor-based boost converter makes the system bulky and increases control complexity. Therefore, the switched-capacitor-based MLI emerges as an efficient DC/AC voltage convertor with boosting capability. To make classical topologies more efficient and cost-effective for sustainable power generation, newer topologies and control techniques are continually evolving. This paper proposes a reduced-component-count five-level inverter design for generating stable AC voltages for sustainable grid-integrated solar photovoltaic applications. The proposed topology uses seven switching devices of lower total standing voltage (TSV), three diodes, and two DC-link capacitors to generate five-level outputs. By charging and discharging cycles, the DC capacitor voltages are automatically balanced. Thus, no additional sensors or control circuitry is required. It has inherent voltage-boosting capability without any input boost converter. A low-frequency-based half-height (HH) modulation technique is employed in the standalone system for better voltage quality. Extensive simulations are performed in a MATLAB/Simulink environment to estimate the performance of the proposed topology, and 17.58% THDs are obtained in the phase voltages. Using a small inductor in series or an inductive load, the current THD reduces to 8.23%. Better dynamic performance is also observed with different loading conditions. A miniature five-level single-phase laboratory prototype is developed to verify the accuracy of the simulation results and the viability of the proposed topology.

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Section: Selection Of Solar Pv Arraymentioning

confidence: 99%