In this paper, a novel high step-up DC-DC converter is proposed for sustainable energy system. The proposed converter uses coupled inductor and switched-capacitor technique. The capacitors are charged in parallel and are discharged in series by the coupled-inductor to achieve high stepup voltage gain with appropriate duty ratio. Besides, the voltage stress on the main switch are reduced with a ...

In this paper, we present an analytical model to analysis the kirk effect onstatic and dynamic responses of quantum well heterojunction bipolar transistor lasers(HBTLs). Our analysis is based on solving the kirk current equation, continuityequation and rate equations of HBTL. We compare the performance (current gain,output photon number and small signal modulation bandwi...

In this Letter, we report Ge p-i-n avalanche photodetectors (APD) with low dark current (sub 1 μA below V(R)=5  V), low operating voltage (avalanche breakdown voltage=8-13  V), and high multiplication gain (440-680) by exploiting a point defect healing method (between 600°C and 650°C) and optimizing the doping concentration of the intrinsic region (p-type ~10¹⁷ cm⁻³). In addition, Raman spectro...

Due to the widespread impact of renewable energy resources on high power density grids, transmission at DC regime has been considered more useful than AC systems. The findings this study suggest application a ripple-free input current resonant DC-DC converter possessing voltage gain and efficiency as being suitable for Applying variable switching frequency control systems, proposed discussed he...

It is proved and examined in this research paper that the perturb observe (P O) technique for isolating photovoltaic array (PVA) from power structure may be used to isolate PV structure. A single specified voltage setup can remove maximum a cell because of nonlinear properties cell’s output. As result, PVA, point tracking (MPPT) algorithm utilized increase yield control range by increasing poin...

In this paper a novel high performance all current-mode fully-differential (FD) Current mode Operational Amplifier (COA) in BIPOLAR technology is presented. The unique true current mode simple structure grants the proposed COA the largest yet reported unity gain frequency while providing low voltage low power operation. Benefiting from some novel ideas, it also exhibits high gain, high common m...

this paper presents a detailed small-signal and transient analysis of a full bridge pwm dc-dc converter designed for high voltage, high power applications using an average model. the derived model is implemented in a typical system and used to produce the small-signal and transient characteristics of the converter. results obtained in the analysis of the high voltage and high power design examp...