Results 11 to 20 of about 329 (152)
Online control of AC/AC converter based SHEPWM technique [PDF]
2014 49th International Universities Power Engineering Conference (UPEC), 2014 Conventional online control of AC/AC converter controlled by the selective harmonic elimination pulse width modulation technique (SHEPWM) is based on storing the offline calculated switching angle values in a form of lookup table. Then the required switching pattern of certain modulation index (M) is searched through the lookup table.
Hashem, GM, Darwish, M
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Research on hybrid SHEPWM based on different switching patterns [PDF]
International Journal of Power Electronics and Drive Systems (IJPEDS), 2019 <span>This paper presents a hybrid pulse width modulation (HPWM) strategy based on different switching patterns of selective harmonic elimination pulse width modulation (SHEPWM) for the three-level neutral point clamped (3L-NPC) converter. Specific low-order harmonics can be eliminated by SHEPWM at low switching frequency, while the remaining ...
Tao Jing +4 more
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Mantis Search Algorithm Based SHEPWM for Five-Phase Multilevel Inverter [PDF]
Journal of Engineering Technology and Applied PhysicsLarge electric vehicles are being introduced as replacements for conventional heavy internal combustion engine (ICE) vehicles, aiming to mitigate environmental concerns.
Quan Ming Wong +6 more
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An Improved SHEPWM Modulation Algorithm for Three-levelEnergy Feedback Inverter
Kongzhi Yu Xinxi Jishu, 2021 The maximum switching frequency of high power converters is limited by the heat dissipation system and cannot be randomly increased. Consequently, increasing low-order harmonics are introduced into the grid.
WU Xuefeng +4 more
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Comparative research of harmonic suppression algorithm of the three-level NPC converter
The Journal of Engineering, 2018 The three-level NPC converter is an effective solution to medium-voltage and high-power electronic converters. Modulation strategy is one of research focus of the three-level NPC converter.
Li Ning, Gao Tong, Zhang Hui, Yang Ping
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Machines, 2020 In this paper, one model of flexible space-vector-based hybrid pulse width modulation (HPWM) transition algorithm consisting of selective harmonic elimination pulse width modulation (SHEPWM) and selective harmonic mitigation pulse width modulation ...
Tao Jing +3 more
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An Improved Hybrid PSO-TS Algorithm for Solving Nonlinear Equations of SHEPWM in Multilevel Inverters [PDF]
IEEE Access, 2022 Selective Harmonic Elimination Pulse Width Modulation (SHEWM) can eliminate selected low order harmonics by solving nonlinear transcendental equations to obtain the switching angles in advance and achieve precise harmonics control.
Yixin Li, Xiao-Ping Zhang, Ning Li
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Application of SHEPWM in Helicopter Transient Electromagnetic Based on the Subsection Control Approach [PDF]
Mathematical Problems in Engineering, 2021 Guaranteeing the quality of the transmitting current under low switching frequency conditions is the crucial point in the helicopter transient electromagnetic (HTEM) system which affects the efficiency and exploration accuracy. HTEM requires high efficiency and low switching loss of the inverter power supply due to the facts that HTEM uses air-launched
Lihui Gao +5 more
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EnergiesWhen inverter switching frequency is constrained, PMSM drives operating at relatively high fundamental electrical frequencies may exhibit a low switching-to-fundamental-frequency ratio (low carrier ratio), resulting in fewer voltage vector updates per ...
Yang Bai, Fengjiang Wu, Jianyong Su
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Fast SHEPWM Solution Method for Wind Power Converter Based on State Equations [PDF]
CSEE Journal of Power and Energy Systems, 2023 Selective harmonic elimination pulse width modulation (SHEPWM) is a modulation strategy widely used for three-level wind power grid-connected converters.
Ning Li +4 more
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