Project Desc :
This letter proposes a hybrid multicarrier pulse width modulation (H-MCPWM) technique to reduce leakage current in a transformerless cascaded multilevel inverter for photovoltaic (PV) systems. The transformerless PV inverter topology has the advantages of simple structure, low weight and provides higher efficiency.
Project Desc :
This letter proposes a hybrid multicarrier pulse width modulation (H-MCPWM) technique to reduce leakage current in a transformerless cascaded multilevel inverter for photovoltaic (PV) systems. The transformerless PV inverter topology has the advantages of simple structure, low weight and provides higher efficiency.
Project Desc :
In applications where the high voltage gain is required, such as photovoltaic grid-connected system, fuel-cell and high-intensity discharge lamps for automobile, high step-up dc-dc converters have been introduced to boost the low voltage to a high bus voltage.
Project Desc :
In this paper, a new cascaded multilevel inverter is proposed. For the proposed inverter, two different algorithms to determine the magnitude of dc voltage sources are proposed. Then, in order to generate maximum numbers of output voltage levels by using constant number of power switches and or dc voltage sources, several optimum structures of the proposed inverter are obtained.
Project Desc :
In this paper, a seven-level single-carrier and multi-modulation-wave sinusoidal pulse width modulation (SCMM-SPWM) strategy is proposed. In the negative half cycle of the modulation waves (MWs), dc offsets related to the amplitude of the carrier are set on the three MWs, respectively, to apply the same comparison logics of the MWs and carrier during positive and negative half cycles of the MWs.
Project Desc :
The objective of this paper is to propose a new inverter topology for multilevel voltage output. This topology is designed based on switched-capacitor technique and the number of output levels is determined by the number of switched-capacitor cells.
Project Desc :
A new prototype of a zero voltage soft-switching (ZVS) utility frequency ac (UFAC) to high-frequency ac (HFAC) resonant power converter for induction heating (IH) applications is presented in this paper.
Project Desc :
This paper describes a dimming method for hot cathode fluorescent lamp (HCFL) using a resonant inverter operating at fixed switching frequency. The proposed method is based on burst dimming and decreases the inverter output voltage during the burst-off period by changing the switching pattern of the inverter.
Project Desc :
This paper deals with a power factor correction (PFC)-based Cuk converter-fed brushless dc motor (BLDC) drive as a cost-effective solution for low-power applications. The speed of the BLDC motor is controlled by varying the dc-bus voltage of a voltage source inverter (VSI) which uses a low frequency switching of VSI (electronic commutation of the BLDCmotor) for low switching losses.
Project Desc :
This paper presents a power factor correction (PFC)-based bridgeless canonical switching cell (BL-CSC) converter-fed brushless dc (BLDC) motor drive. The proposed BL-CSC converter operating in a discontinuous inductor current mode is used to achieve a unity power factor at the ac mains using a single voltage sensor.
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