DOAJ Open Access 2021

Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source fault

Jinfei Xiong Fulin Zhou Qunzhan Li

Abstrak

Abstract Cascaded H‐bridge inverter (CHBI) is widely used in the industry application for its outstanding features. However, CHBI needs a large number of isolated DC sources. If some of the DC sources are out of work, the DC voltage cannot maintain the desired value and even decreases to zero, thus degrading the quality of the output voltage of the CHBI. Thus, a soft‐switching modulation strategy based on the carrier phase shift SPWM is proposed in this paper to cope with the DC source failure. The strategy is proposed to achieve two goals: 1) one is to adjust the DC voltage of faulty cells back to the normal; 2) the other one is to make the pulse width modulation (PWM) pulses of each cell change without cell voltage level‐skip. The correction and efficiency are verified by a prototype of three‐cell CHBI built in the laboratory.

Topik & Kata Kunci

Distribution or transmission of electric power Production of electric energy or power. Powerplants. Central stations

Penulis (3)

Jinfei Xiong

Fulin Zhou

Qunzhan Li

Format Sitasi

APA MLA BibTeX

Xiong, J., Zhou, F., Li, Q. (2021). Soft‐switching modulation of the multilevel cascaded H‐bridge inverter under DC source fault. https://doi.org/10.1049/gtd2.12105

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Informasi Jurnal

Tahun Terbit: 2021
Sumber Database: DOAJ
DOI: 10.1049/gtd2.12105
Akses: Open Access ✓