This paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. The hybrid DC power sources are connected to grid using power electronic converters include DC-DC converter and grid connected voltage source inverter. The power from hybrid power sources is controlled during voltage sag by designing of control strategy for DC-DC converter....

In this paper, an H-bridge inverter topology with reduced switch count technique is introduced. This technique reduces the number of controlled switches used in conventional multilevel inverter. To establish a single phase system, the proposed multilevel inverter requires one H-bridge and a multi conversion cell. A multi conversion cell consists of three equal voltage sources with three control...

In this paper, an alternative approach for performing the pre-characterization of CMOS digital gates is proposed. This method aims to eliminate the use of circuit simulators like HSPICE during the cell pre-characterization in order to accelerate it. This procedure is necessary for the operation of technology models such as CCS, NLDM and NLPM. This is achieved by employing an analytical inverter...

In this paper, analysis of cascaded H-bridge multilevel inverter in DTC-SVM (Direct Torque Control-Space Vector Modulation) based induction motor drive for FCEV (Fuel Cell Electric Vehicle) is presented. Cascaded H-bridge multilevel inverter uses multiple series units of H-bridge power cells to achieve medium-voltage operation and low harmonic distortion. In FCEV, a fuel cell stack is used as t...

In this paper, a method is introduced which reduces the harmonicdistortion of the inverter output current, connecting the fuelcell to the AC load. Using FUZZY LOGIC-PI (FLPI), the controllingmethod is engaged in optimum tuning of the PI controllercoefficients of this converter. This converter has only one DC-ACboost inverter and simultaneously has the task of increasingvoltage level and generat...

A high speed and low power CMOS inverter is designed & simulated in this paper. The critical path consists of PMOS and NMOS. The designed inverter cell offers high speed and low power consumption than the CMOS inverter. A Multi Threshold Complementary Metal Oxide Semiconductor (MTCMOS) technique is used to reduce the leakage current as well as leakage power to achieve better results. MTCMOS is ...

A modified pulse width modulation technique for Z-source inverter based BLDC motor is proposed and analyzed in this project.The Z-source inverter can be used as Buck/Boost converter with lower cost and high efficiency. BLDC motors are used in electric vehicles where portability and efficiency are required. This drive system provides advantages of both BLDC motors and Z-source inverter, and can ...

This paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. The hybrid DC power sources are connected to grid using power electronic converters include DC-DC converter and grid connected voltage source inverter. The power from hybrid power sources is controlled during voltage sag by designing of control strategy for DC-DC converter....

Multi-level inverter technology has emerged recently as a very important alternative in the area of high-power medium-voltage energy control. In this paper, the most important topologies like diode-clamped inverter (neutral-point clamped), capacitorclamped (flying capacitor), and cascaded multi cell with separate dc sources. In this paper, we proposed a new multi-level inverter topology based o...

This paper presents the designing of a low powered (25-30 watts), portable and cost effective solar micro-inverter wherein the single solar panel is able to run the AC loads along with DC loads. The system consists of a solar panel, DC-DC push-pull converter, DC-AC inverter, LC filter and the test loads. The solar cell powers DC-DC push pull converter which boosts the input DC voltage into the ...