Results 11 to 20 of about 514 (145)
Study of five-level inverter double-band SHEPWM control method
Gong-kuang zidonghua, 2014 A kind of five-level inverter double-band SHEPWM control method was proposed combining Walsh transformation with SHEPWM program which can broaden modulation ratio of multi-level inverter.
YE Manyuan, CAI Hong, LI Bing, LI Song
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Design of modified long short-term memory-based zebra optimization algorithm for limiting the issue of SHEPWM in multi-level inverter [PDF]
Scientific ReportsThis research work proposes unique MLSTM-ZOA to quickly measure SAs for an MLI. Within a certain MI range, the suggested method may calculate a greater count of SAs with various solutions.
G. Krithiga +3 more
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Input-parallel output-series Si-SiC hybrid inverter with fractional harmonic elimination [PDF]
Frontiers in Energy ResearchThis paper proposes an input-parallel output-series (IPOS) Si-SiC hybrid inverter with dual-frequency harmonic elimination modulation strategy. The proposed topology composed of two power conversion cells and a three-phase five-column medium-frequency ...
Qinhai Yu +6 more
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An approach to suppress high-frequency resonance using model predictive and selective harmonic elimination combined strategy [PDF]
Archives of Electrical Engineering, 2021 High-frequency resonance is a prominent phenomenon which affects the normal operation of the high-speed railway in China. Aiming at this problem, the resonance mechanism is analyzed first. Then, model predictive control and selective harmonic elimination
Sitong Chen +3 more
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Multiband SHEPWM Control Technology Based on Walsh Functions [PDF]
Electronics, 2020 The drawback of modulation ratio limitation in selective harmonic elimination pulse width modulation (SHEPWM) technology based on Walsh function transformation. In order to solve this problem, a multiband SHEPWM control technology method for a multilevel inverter based on Walsh functions is proposed.
Song Li +4 more
openaire +1 more source
A High Quality Output Voltage for HEPWM of Single Phase AC Motor Drive [PDF]
Engineering and Technology Journal, 2009 provide the exact on-line solution to the optimal PWM problem. The proposedalgorithm optimization technique is applied to a 3-level unipolar single-phase inverter todetermine optimum switching angles for eliminating low order harmonics while ...
Jamal A. Mohammed +2 more
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IET Power Electronics, Volume 16, Issue 14, Page 2336-2355, 4 November 2023., 2023 This paper implements Broyden's Method Assisted Differential Evolution algorithm for eliminating third and fifth harmonics in the output voltage of 7‐level cascaded H‐Bridge multilevel inverter (CHB‐MLI) using selective harmonic elimination technique. Calculations of switching angles are done for various modulation index values (M).
Mohd Ahsan +6 more
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IET Electric Power Applications, Volume 17, Issue 7, Page 906-917, July 2023., 2023 1. Low switching frequency modulation is important for a high‐power voltage source converter. 2. The proposed hybrid modulation with a new smooth switching way can achieve good output performance and high dynamic response. Abstract For high‐power converters, the low switching frequency (SF) modulation represented by selective harmonic elimination pulse
Bo Guan, Xuyang Yan
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THD Reduction of Improved Single Source MLI Using Upgraded Black Widow Optimization Algorithm
International Transactions on Electrical Energy Systems, Volume 2023, Issue 1, 2023., 2023 An upgraded Black Widow Optimization algorithm for obtaining the ideal switching angles of a reduced structure multilevel inverter is proposed in this paper with minimum voltage THD. The conventional BWO algorithm has been modified and proposed to solve the THD minimization problem with faster convergence rate, lesser tuning variables, and lesser ...
Rupali Mohanty +5 more
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Performance Improvement of a Single Phase Induction Motor Fed by Nonsinusoidal Voltages [PDF]
Engineering and Technology Journal, 2008 The distorted voltage waveforms, which have, more or less, a high harmoniccontent, have negative impact on the long-term performance of the motor, as theycause nonsinusoidal currents in the stator and the rotor, and consequently additionallosses and ...
Jamal A. Mohammed
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