نتایج جستجو برای: selective harmonic elimination
تعداد نتایج: 299915 فیلتر نتایج به سال:
This article presents an 11-level operation of the WE (Wee)-Type inverter. The topology employs a single DC-source, has reduced number components, and exhibits boosting capability. A voltage balancing algorithm is proposed where inverter’s redundant states are employed to maintain auxiliary DC-link voltage. It shown that with control algorithm, link preserved at half primary voltage, possible f...
0142-0615/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.ijepes.2012.08.024 ⇑ Corresponding author. Tel./fax: +90 312 212 13 3 E-mail address: [email protected] (I. Colak). In this study, an enhanced SPWM modulation scheme is developed in order to minimize total harmonic ratio (THD) by eliminating the side band harmonics that are not paid attention in regular modulation sc...
A two-step methodology was used to address and improve the power quality concerns for PV-integrated microgrid system. First, partial shading included deal with real-time issues. The Improved Jelly Fish Algorithm integrated Perturb Obserb (IJFA-PO) has been proposed track Global Maximum Power Point (GMPP). Second, main unit-powered via DC–AC converter is synchronised grid. To cope wide voltage v...
Selective harmonic elimination (SHE) technique is used in power inverters to eliminate specific lower-order harmonics by determining optimum switching angles that are generate Pulse Width Modulation (PWM) signals for multilevel inverter (MLI) switches. Various optimization algorithms have been developed determine the angles. However, these techniques still trapped local optima. This study propo...
This article considers ${l}$ -level cascaded H-bridge (CHB) inverters and proposes a new modulation method based on pulse active width (PAWM), capable to minimize all harmonics with order notation="LaTeX">$n< 2l+1$ satisfy the Euro...
The operation of offshore wind power plants with respect to quality and grid code compliance must be verified for different conditions in the design phase using harmonic analysis methods. This paper addresses this verification by first considering a scenario which turbines operate typically used modulation strategy, carrier-based pulse width modulation. studies are performed at several operatin...
<p>Selective harmonic elimination technique SHE is adopted in this work to reduce the contents single phase cascaded multilevel inverter. The firing instants for electronic switches MOSFETs inverter are calculated off line five level thirteen An Arduino microcontroller programmed cope with different topologies of implemented multi-level (MLI) results compared Simulink simulation program a...
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 control. However, when equations, convergence rate solution accuracy of existing intelligent algorithms for multilevel inverter SHEPWM will decrease with increase number angles. In thi...
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