Cascaded H-bridge multilevel inverters with discrete variation of DC sources

Nezhad, Ahmad Behzadi; Namadmalan, Alireza; Rahdarian, Ali

doi:10.1080/00207217.2019.1600736

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…The CHB has gained popularity for high-power and power-quality applications because of its simplicity and versatility. Unfortunately, CHB-MLI needs a lot of isolated independent dc sources and switching devices in order to enhance the output voltage levels, which can be expensive as well as take up a lot of space in this configuration [8]. The use of transformer-cascaded multilevel inverters can solve the problem of needing several dc-sources and switching devices in CHBMLI.…”

Section: Introductionmentioning

confidence: 99%

Integration Battery Energy Storage Using T- Type Solid State Transformer Based Multilevel Inverter

Molli¹,

P²

2023

Preprint

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Storage technologies are essential for preserving the renewable grid power balance between generation and consumption. In this research, a solid-state transformer (SST) based T-type multilevel inverter (MLI) is proposed for the medium/high voltage integration of large-scale battery energy storage (BES). For any turn ratio, the proposed SST-MLI generates 25 levels with fewer switching devices and SSTs. A novel dynamic phase shift controller (NDPSC) is also being developed for the proposed BES system. The NDPSC controller regulates active and reactive power by maintaining the battery's health. The NDPSC controller uses two gain control factors tuned to produce a fast response without overshooting. The proposed battery storage system's dynamic behavior is simulated in MATLAB/Simulink for various active and reactive power variations and experimentally validated in a low-power laboratory prototype system.

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Section: Introductionmentioning

confidence: 99%

Integration Battery Energy Storage Using T- Type Solid State Transformer Based Multilevel Inverter

Molli¹,

P²

2023

Preprint

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“…A control algorithm for monophase cascaded H-bridge multilevel inverter based solar energy conversion system is suggested in [19], this method provides dc capacitor balancing and high-power quality during partial shading and panel mismatch conditions. A 2-cell Cascaded H-Bridge (CHB) multilevel inverter with unequal DC sources and 9-level operation is explained in [20][21]. But, all the above control techniques have drawbacks like nonlinear characteristics and complex control.…”

Section: Introductionmentioning

confidence: 99%

A New Multilevel Inverter Topology With Reduced Power Components for Domestic Solar PV Applications

Prem¹,

Sivaraman²,

Almakhles

et al. 2020

IEEE Access

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Power electronic converters are used to nullify the input fluctuations from a solar photovoltaic unit due to intermittent solar irradiance and to make the terminal voltage grid compatible with desired frequency. The conventional two-level converters suffer from low power quality and high voltage stress. In this paper, a new multilevel inverter topology called Dual Source Multilevel Inverter (DS-MLI) with fewer power switches is proposed for solar PV power conversion systems. It is capable of operating in symmetric and asymmetric operating modes without the need for cascading. This reduces the switching components required to produce a given number of levels in the staircase voltage waveform. A closed-loop control algorithm is designed using the state-space averaging technique, and the dynamic behavior of the system under step change is assessed. The simulation is carried out in MATLAB environment. The experimental prototype of DS-MLI rated 1 kW is fabricated using FGA25N120-ANTD IGBTs, and an eco-sense made solar PV emulator is used for analyzing the performance of DS-MLI while interfacing with solar PV unit. The suggested scheme is compared with its conventional counterpart in the aspects of components required, cost and efficiency and the results are presented INDEX TERMS DS-MLI, Multilevel inverter, Solar PV, Power Conversion, Fundamental frequency switching.

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Transformer Cascaded 27-Level Multilevel Inverter for Medium-/High-Voltage PV System Integration

Molli

Raj

Sudhakaran

2023

Iran J Sci Technol Trans Electr Eng

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Cascaded H-bridge multilevel inverters with discrete variation of DC sources

Cited by 6 publications

References 23 publications

Integration Battery Energy Storage Using T- Type Solid State Transformer Based Multilevel Inverter

Integration Battery Energy Storage Using T- Type Solid State Transformer Based Multilevel Inverter

A New Multilevel Inverter Topology With Reduced Power Components for Domestic Solar PV Applications

Transformer Cascaded 27-Level Multilevel Inverter for Medium-/High-Voltage PV System Integration

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