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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) International Journal of Advances in Applied Sciences
Sirisha, B.
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Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Simplified Space Vector Pulse Width Modulation Based on Switching Schemes with Reduced Switching Frequency and Harmonics for Five Level Cascaded H-Bridge Inverter Sirisha, B.; Satishkumar, Dr. P.
International Journal of Advances in Applied Sciences Vol 7, No 2: June 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (668.224 KB) | DOI: 10.11591/ijaas.v7.i2.pp127-134

Abstract

This paper presents a simplified control strategy of SVPWM with a three segment switching sequence and 7 segment switch frequency for high power multilevel inverter. In the proposed method, the inverter switching sequences are optimized for minimization of device switching sequence frequency and improvement of harmonic spectrum by using the three most derived switching states and one suitable redundant state for each space vector. The proposed 3-segment sequence is compared with conventional 7-segment sequence similar for five level Cascaded H-Bridge inverter with various values of switching frequencies including very low frequency. The output spectrum of the proposed sequence design shows the reduction of device switching frequency and states current and line voltage. THD this minimizing the filter size requirement of the inverter, employed in industrial applications. Where  sinusoidal output voltage is required.
Implementation and study of switched impedance boost and KY-boost converters for electric vehicle Sreenu, Sapavath; Upendar, J.; Sirisha, B.
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 1: March 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i1.pp367-376

Abstract

A DC/DC converter based on photovoltaic (PV) grid connections is proposed here. This work focuses on the switched impedance source (S¬_ZSC) for electric vehicles. Every PV grid-connected system require step-up DC/DC converters to boost voltage range from low to high. Connecting an extra diode and a switch to the terminals of a standard quasi-impedance source DC/DC converter raises the step-up factors. In this proposed converter, this capacitor does more than just filter noise. Saturated inductors, on the other hand, can cause instability that needs not occur. In any case, the modulation index's H-bridge at its extremes is adjustable to a broader range when the circuit is used for DC-AC conversion. A larger boost factor is achieved with a shorter duty time as compared to currently available Z-source based systems. Both a buck-boost charging station and a KY-boost charging station were modeled for this investigation. PI or fuzzy logic controllers are utilized in DC-DC converters to keep the output voltage stable.
Co-Authors Satishkumar, Dr. P. Sreenu, Sapavath Upendar, J.