This paper presents a Hybrid Two Quasi Z-source(HTQZS) DC-DC converter for photovoltaic applications. These are mainly employed to full fill the demand of the voltage boost in photovoltaic applications from the lower value voltage. The traditional z source networks have some limitations in voltage boosting, so the modified z source means the different combination of the LC components is combine...

In this paper, a DC-DC resonant converter with high voltage gain and small size is studied. To reduce the size and weight of this converter, the operating frequency should be as high as possible. In this research, the frequency changes from 120 to 200 kHz. Due to the high operating frequency, it is necessary to reduce the switching losses using soft switching methods. Resonant converters are su...

In this paper, a DC-DC resonant converter with high voltage gain and small size is studied. To reduce the size and weight of this converter, the operating frequency should be as high as possible. In this research, the frequency changes from 120 to 200 kHz. Due to the high operating frequency, it is necessary to reduce the switching losses using soft switching methods. Resonant converters are su...

Energy shortage and environmental contamination in the present scenario has increased the use of renewable energy sources.Among the renewable energy sources the photovoltaic cells plays a significant role in meeting the energy requirements. The problem associated with the PV cells are it produces low output voltage and thus a high step-up dc dc converter is essential to boost the low voltage of...

Inductor Inductor Capacitor (LLC) resonant converter has gained attention of researchers and engineers these days High efficiency, power density and Reliability. LLC resonant converter is most suitable resonant converter for front end DC-DC applications. Integrated magnetic, ZVS and high frequency operation, make the converter more compact and efficient. In this paper brief analysis of the LLC ...

Abstract -This paper presents an optimum design for low-voltage, low-power DC-DC converter which has a controller and integrated CMOS switches using small size inductor (luH). Optimum design for single chip DC/DC converter is achieved by analyzing the amount of conduction and switching losses. Through the loss analyses, it is turned out that a constant frequency hard switching PWM converter wit...

This paper presents development of an optimal control strategy for a hybrid photovoltaic/battery energy storage (PV/BES) system. The fluctuations at the DC bus voltage due to voltage sag were mitigated by using charge/discharge capability of the BES through the DC/DC buck/boost converter. Furthermore, an optimization of system control parameters responsible for DC bus voltage regulation within ...

This paper proposes a high voltage ratio and low ripple interleaved boost DC-DC converter, which can be used to reduce the output voltage ripple. This converter transfers the low DC voltage of fuel cell to high DC voltage in DC link. The structure of the converter is parallel with two voltage-doubler boost converters by interleaving their output voltages to reduce the voltage ripple ratio. Besi...

This application note describes the LED driving system using a half-bridge LLC resonant converter for high power LED lighting applications, such as outdoor or street lighting. Due to the existence of the non-isolation DC-DC converter to control the LED current and the light intensity, the conventional PWM DC-DC converter has the problem of low-power conversion efficiency. The halfbridge LLC con...

This paper presents the functions of Series-Loaded Resonant Converter (SLRC). Series Loaded Resonant DC-DC converter is a type of soft-switching topology widely known for providing improved efficiency. Zero voltage switching (ZVS) buck converter is more preferable over hard switched buck converter for low power, high frequency DC-DC conversion applications. Zero Voltage switching techniques wil...