نتایج جستجو برای: selective harmonic elimination
تعداد نتایج: 299915 فیلتر نتایج به سال:
High-power current source inverters (CSI) usually operate at a low switching frequency to reduce loss. To suppress low-order harmonics and simplify filter design, the selective harmonic elimination pulse width modulation (SHEPWM) technique is feasible common strategy in industrial applications. This paper proposes an operational that uses H7 inverter (H7-CSI) with hybrid switches perform SHEPWM...
Considering present shortage of fossil fuels and discharges ozone harming substances, power developed from Renewable Energy Sources (RES) is identified as the excellent choice for producing electricity. The characteristic an inverter to transform dc into ac fulfill out requirements load. Despite its advantage, presence harmonics in output voltage reduces both efficiency performance inverter. Se...
This paper presents a solar-powered Partial Resonant Inverter (PRI) interfaced with an asymmetrical cascaded nine-level inverter. The DC input of the proposed system is obtained using Solar Photovoltaic (SPV) panel. sources fed to inverter are in ratio 1:3. step modulated works precalculated switching angle for fixed modulation 0.7. Compared conventional 50 Hz and multi-output transformer desig...
In this article, various modulation strategies and hysteresis-band control of a recently introduced dual-boost nine-level inverter (DB9LI) are implemented. DB9LI is switched capacitor based capable generating symmetrical nine output voltage levels by employing single DC source. The topology generates boosted bipolar at the side without applying end-side H-bridge (usually employed to generate ne...
This paper presents a modification to the dingo optimization algorithm (mDOA) solve non-linear set of equations selective harmonic elimination (SHE) control technique widely applied in multilevel inverters. In addition, said is conducted survival criteria by including local search provide better balance when replacing vectors (dingoes) with low rate. The proposed method also benchmarked some un...
We address the Selective Harmonic Modulation (SHM) problem in power electronic engineering, consisting designing a multilevel staircase control signal with some prescribed frequencies to improve performances of converter. In this work, SHM is addressed through an optimal methodology based on duality, which admissible controls are piece-wise constant functions, taking values only given finite se...
Patients with early disruptions of binocularity show cortical directional asymmetries in their steady state monocular VEP response to oscillatory motion. The VEP directional asymmetry is characterized by significant first harmonic components that show a 180 degrees difference in the response phase between the two eyes. By contrast, the normal response is dominated by even-order response harmoni...
A transplantable frequency selective metasurface element (FSMSE) for high-order harmonic suppression (HS) is presented in this paper. The proposed harmonic free FSMSE can be integrated with arbitrary frequency selective surfaces (FSSs) operating at the same frequency band. The designed HS-FSMSE is applied to two different types of FSSs for verification of harmonic suppression, respectively. One...
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