A New Modulation Technique for A Three-Cell Single-Phase CHB Inverter with Un-Equal DC-Link Voltage for Improving Output Voltage Quality

Citarsa, Ida Bagus Fery; Satiawan, I Nyoman Wahyu; Supriono,

doi:10.1109/aemt.2018.8572358

Cited by 2 publications

(1 citation statement)

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“…A drastic reduction in switch count has been observed by the implementation of asymmetric configuration in CHB topology. Different DC supply voltage combinations in asymmetric CHB can generate various possible voltage levels [24]. When two cascaded H-bridge MLI are employed, two voltage sources and 8 switches along with a battery voltage combination ratio of 1:1 generates a five-level output voltage while 1:2 generates 7 level output voltage.…”

Section: Introductionmentioning

confidence: 99%

Novel Integrated NLC-SHE Control Applied in Cascaded Nine-Level H-Bridge Multilevel Inverter and Its Experimental Validation

et al. 2023

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In this paper, a novel integrated SHE -NLC control is proposed for the mitigation of unwanted lower-order harmonics in the cascaded H-bridge multilevel inverter. The proposed algorithm has been developed by hybridizing the NLC and SHE methods, in an attempt to keep the merits of both the individual control. The switching angles and nearest levels are calculated by applying the Genetic Algorithm (GA). The proposed technique reduces the calculation time and implementation complexity, thus can be a viable alternative to the real time implementation for SHE. Integrated NLC-SHE control is tested by varying the modulation index and load dynamics. This technique resulted in the reduction in Total Harmonic Distortion (THDs) in load voltage and current. Comparative analysis of NLC, SHE and Integrated NLC-SHE technique is also performed on the CHB nine-level inverter. There is significant reduction in voltage and current THD values and power losses. Efficiency of the inverter is increased. The efficacy of the proposed control CHB nine-level is tested on MATLAB Simulink environment and further validated by experimental results.

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Section: Introductionmentioning

confidence: 99%