New multilevel inverter with the elimination of successive low-rank harmonics using PWHM for integration into the distribution grid
this paper proposes an innovative solution based on the development of a six-level multilevel inverter. A new topology of a three-phase, six-level inverter is presented, with the aim of canceling as many low-order harmonics as possible while minimizing the number of switching actions, and eliminatin...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025026131 |
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| Summary: | this paper proposes an innovative solution based on the development of a six-level multilevel inverter. A new topology of a three-phase, six-level inverter is presented, with the aim of canceling as many low-order harmonics as possible while minimizing the number of switching actions, and eliminating the homopolar voltage (the sum of the three output voltages of the inverter). This dual cancellation is achieved through Pulse Width and Height Modulation (PWHM).In the proposed inverter, harmonics are successively canceled from the 2nd to the 10th, with the first non-canceled harmonic being the 11th, which has an amplitude of only 8 % of the fundamental. Simulations show a total harmonic distortion (THD) of only 15.22 %, with 12 switching states per period. The low switching frequency of the semiconductors reduces inverter power losses, improving overall efficiency. Analytical comparisons confirm that this topology is competitive, requiring fewer power switches and control circuits than conventional topologies, making it a promising solution for high-quality energy conversion in distribution networks. |
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| ISSN: | 2590-1230 |