نتایج جستجو برای: unidirectional switches and harmonic elimination
تعداد نتایج: 16848886 فیلتر نتایج به سال:
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...
In this paper, a new structure of HFTI-qZS-CMI has been proposed. The proposed structure is capable of generating high-voltage for medium to high power applications. By adding a switch, a capacitor and a high-frequency transformer and also eliminating an inductor from each qZS-CMI cell, the HFTI-qZS-CMI structure will be created. Using the high-frequency transformer in the proposed structure, l...
In this paper, a new open-switch fault diagnosis method is proposed for the six-phase AC-DC converter based on the difference between the phase current and the corresponding reference using an adaptive threshold. The open-switch faults are detected without any additional equipment and complicated calculations, since the proposed fault detection method is integrated with the controller required ...
Abstract --One of the major problems in electric power quality is the harmonic contents. There are several methods of indicating the quantity of harmonic contents. As per IEEE 519 std. these parameters of power quality measurement, are four in number, of which Total Harmonic Distortion is most widely used. In electrical systems, harmonics increase business operating costs by increasing downtime...
Abstract— This paper presents Neuro-Fuzzy logic based Power Conditioner for elimination of current harmonic. In it neuro-fuzzy based technique is used for generating compensating current to eliminate/reduce the harmonics content which is generated by the system. The modelling of Fuzzy rule base on Neural Network is also mention in this paper. FFT analysis also has been done for the calculation ...
Due to serious Concerns such as air pollution, global warming, and fossil fuels shortcoming, renewable energy sources photovoltaic applications are dramatically being integrated into the power generation systems all of world. Here, a new switched-capacitor-based transformer-less grid-tied inverter has been proposed. By applying series–parallel switching technique utilized switched-capacitor mod...
This paper presents a unique voltage-raising topology for single-phase seven-level inverter with triple output voltage gain using single input source and two switched capacitors. The has been boosted up to three times the value of by configuring capacitors in series parallel combinations which eliminates use additional step-up converters transformers. selective harmonic elimination (SHE) approa...
In this paper a direct ac-ac converter with low distortion input/output waveforms is investigated. Direct ac-ac converters using self-commutated semiconductor switches, also known as matrix converters, have recently attracted the attention of researchers. However, these converters are still under development due to the problems associated with the commutation of bidirectional switches employed ...
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