Cascaded H-Bridge Multilevel Inverter with a distributed control system for solar applications

Bertin, Thibault; Despesse, Ghislain; Thomas, Remy

doi:10.1109/ssi56489.2022.9901434

Cited by 1 publication

(2 citation statements)

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“…The multilevel ability of the CHBMLI offers much more possibilities in terms of reducing the harmonics than the Conventional H-Bridge [35]. However, the comparison made in this study only considers the grid current ripple and neglects the harmonics in order to use the control algorithm for the CHBMLI presented by the authors in a previous study [36], as these algorithms do not yet include specific harmonics elimination. Several control algorithms, such as Selective Harmonics Elimination Pulse Width Modulation (SHE-PWM), can be used to remove current harmonics and reduce Total Harmonic Distortion (THD) [21].…”

Section: Circuit Simulationsmentioning

confidence: 99%

“…The control of the converter was detailed in previous work by the authors. First, it was demonstrated that it is possible to control the CHBMLI with a hardware architecture having up to 20 modules with a switching frequency of 20 kHz [36]. A second paper detailed how this topology can be controlled with a reduced number of sensors [23] while operating, for each solar panel, an individual Power Point Tracking (MPPT) algorithm with minimum power oscillations.…”

Section: Experimental Measurements For the Chbmlimentioning

confidence: 99%

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Comparison between a Cascaded H-Bridge and a Conventional H-Bridge for a 5-kW Grid-Tied Solar Inverter

2023

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This paper compares the cost and efficiency of two inverter topologies for a 5-kW grid-connected solar inverter application: the Conventional H-Bridge Inverter (CHB) and the Cascaded H-Bridge Multilevel Inverter (CHBMLI). Emphasis is put on power switches and passive elements with a detailed study of the losses. Both designs respect the same constraints (cost, efficiency, and junction temperature of the transistors) to ensure a fair comparison between both topologies. The work highlights the important parameters when choosing the components (MOSFETs, capacitors, and magnetic cores for the inductors). The DC-link voltage ripple and the output AC current ripple are the key parameters for the design of the passive elements (capacitors and inductors). On top of that, the transistors MOSFETs are chosen, in both topologies, to limit the conduction losses (by selecting the Rdson) and the switching losses (by selecting the Qrr and dv/dt). Real components are picked in order to make the comparison as complete as possible. Numerical simulations are performed using the MATLAB platform. All equations and parameters are provided. A CHBMLI prototype was built with eight independent H-Bridges to validate the proposed design with thermal and efficiency measurements.

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Section: Circuit Simulationsmentioning

confidence: 99%

Section: Experimental Measurements For the Chbmlimentioning

confidence: 99%