The solar photovoltaic power has received great attention and experienced impressive progress in the countries all over the world in recent years because of more and more serious energy crisis and environmental pollution. This paper proposes a novel power management control strategy for stand-alone photovoltaic power system, which consists of a solar cell array, a […]
A Novel Single-Stage High-Power-Factor Electronic Ballast With Boost Topology for Multiple Fluorescent Lamps-Matlab-Power Electronics-2009
A novel single-stage high-power-factor (HPF) electronic ballast with boost topology for multiple fluorescent lamps is presented in this paper. HPF at the input terminal is achieved by operating the boost converter in discontinuous conduction mode.With carefully designed circuit parameters, soft switching on the power switches of the resonant inverter can be retained to attain high […]
Analysis and Implementation of a Hybrid High-Power-Factor Three-Phase Unidirectional Rectifier-Matlab-Power Electronics-2009
This paper describes the conception and analysis of a unidirectional hybrid three-phase rectifier suitable for mediumand high-power applications. The rectifier is omposed of a single-switch diode bridge boost-type rectifier in parallel with a pulsewidth modulation (PWM) three-phase unidirectional boost rectifier. The objective is to obtain a structure capable of providing sinusoidal input currents with low […]
Transformerless Single-Phase Multilevel-Based Photovoltaic Inverter-Matlab-Power Electronics-2008
The elimination of the output transformer from gridconnected photovoltaic (PV) systems not only reduces the cost,size, and weight of the conversion stage but also increases the system overall efficiency. However, if the transformer is removed,the galvanic isolation between the PV generator and the grid is lost. This may cause safety hazards in the event of […]
Multilevel Inverter For Grid-Connected PV System Employing Digital PI Controller-Matlab-Power Electronics-2008
This paper presents a single-phase five-level photovoltaic (PV) inverter topology for grid-connected PV systems with a novel pulsewidth-modulated (PWM) control scheme. Two reference signals identical to each other with an offset equivalent to the amplitude of the triangular carrier signal were used to generate PWM signals for the switches. A digital proportional–integral current control algorithm […]
Digital Average Current-Mode Control of PWM DC–DC Converters Without Current Sensors-Matlab-Power Electronics-2010
This paper introduces a digital average current-mode control technique for pulsewidth modulation dc–dc converters which only rely on voltage sampling. The proposed approach is to estimate inductor current using first-order discrete-time low-pass filter; therefore, the controller can calculate average inductor current in every switching cycle. As a novel technique of predictive average current control, it […]
Stability Analysis of a Non-Inverting Synchronous Buck-Boost Power Converter for a Solar Power Management System-Matlab-Power Electronics-2008
This paper presents the stability analysis ofa non-inverting synchronous buck-boost DC/DC power converter for a solar power management system. The system can operate in buck, buck-boost or boost mode according to the condition of the supply voltage. The variation of the supply voltage arises from the rapid changes of the atmospheric condition or sunlight incident […]
An Improved Sliding Mode Controller for Boost Converter in Solar Energy System-Matlab-Power Electronics-2009
The clean energy sources such as solar cells, fuel cells and photovoltaic are attractive in the present time as fossil energy cannot be renewed and the price is soaring in recent years. A system converting solar energy to electricity and connecting to the utility network is proposed in this paper. DC-DC converter becomes necessary in […]
Current Harmonic Compensation and Power Factor Improvement by Hybrid Shunt Active Power Filter-Matlab-Power Electronics-2010
In this paper the current harmonic can be compensated by using the Shunt Active Power Filter, Passive Power Filter and the combination of both. The system has the function of voltage stability, and harmonic suppression. The reference current can be calculated by dq transformation. An improved generalized integrator control was proposed to improve the performance […]
Design Guidelines of New Step-up DC/DC Converter for Fuel Cell Powered Distributed Generation Systems-Matlab-Power Electronics-2010
This paper presents a new step-up DC/DC converter topology to be used for distributed energy systems. The topology contains a voltage-fed quasi-Z-source inverter with continuous input current, a high-frequency step-up isolation transformer and a voltage doubler rectifier. Main operating modes of the converter are explained and steady state analysis of the voltage-fed quasi-Z-source inverter is […]
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