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A structure of 13-level DC Link Multilevel H-Bridge Inverter (DCLMLHBI) is proposed for symmetrical Photo Voltaic (PV) panels. Voltage stress across the inverter switches, Power Spectral Density (PSD), voltage and current harmonics are reduced in the proposed configuration. Compared with conventional 13-level Cascaded Multilevel Inverter (CMLI) configuration, the proposed system configuration is structured...
Steadiness of power system is a significant issue in power system operation. In this article design of Neural Network tuned Fuzzy logic power system stabilizer (NNTFLPSS) for single machine infinite bus (SMIB) system is proposed to settle down low frequency swinging that improves small signal stability in power system. The speed deviance and variation in speed deviance of the rotor of synchronous...
Various control and modulation techniques such as Sine Pulse Width Modulation (SPWM), Space Vector modulation (SVM) and Selective Harmonic Elimination (SHE) have been used for multilevel inverter (MLI). The best method is SHE due to low switching losses and it suppress the specific unwanted harmonic. The various algorithms such as Genetic Algorithm (GA), bee algorithm, resultant theory and swarm intelligence...
Multilevel inverter (MLI) has various advantages such as less EMI issues, voltage stress and switching losses, it is a best choice for industrial application. In tradition inverters, Harmonics can be eliminated by using large size of filters due to the lower order harmonics. This leads to increase the overall size, volume and cost of an inverter. But in MLI, the implementation of selective harmonic...
This paper describes a single-phase five-level PV inverter topology with dual reference modulation technique. Two reference signals identical to each other with an offset equivalent to the amplitude of the triangular carrier signals were used to generate PWM signals. Maximum Power Point Tracking (MPPT) is introduced in solar array power system with direct control method. The incremental conductance...
People in underprivileged countries could benefit from the use of a solar distributed generation system. The tracking module is designed with the help of the stepper motor which does not require sensors for tracking. This can be done by knowing the step angle. Calculations of step angle and solar radiations are made by finding some of the angular positions to result in intensity and step angles.
A biogas is a modern energy source and is suitable to necessities of the future with the appropriate application of the digestion technology. The project aims at creating and establishing a fair evaluation system, capable to evaluate and compare efficiency of biogas plants by means of energetic, economical, ecological and socio-economic criteria. Thus, characteristic and objective parameters have...
A Space Vector Pulse Width Modulation (SVPWM) scheme for diode clamped multilevel inverters is proposed. The proposed Pulse Width Modulation scheme generates the inverter leg switching pulses from the sampled reference phase voltage. The SVPWM scheme, presented for diode clamped multilevel inverters, can also work in the over modulation range, using only the sampled amplitudes of reference phase voltages...
Multilevel inversion is a power conversion strategy in which the output voltage is obtained in steps. In recent years, the multilevel inverters have drawn tremendous interest in the area of high-power medium-voltage energy control. Several modulation and control strategies have been developed or adopted for multilevel inverters including the following multilevel Sinusoidal Pulse Width Modulation (SPWM),...
The application of communication and information technology in electrical utility makes consumers to be very comfortable. From the perspective of energy saving and power efficiency in Generation, Utility, Industry and homes an effective supervising of appliances is required. Now a day, smart grid conceptusing various cost effective communication technology and architecture proves electrical sector...
Boost DC-AC inverter naturally generates in a single stage an AC voltage whose peak value can be lower or greater than the DC input voltage. The main drawback of this structure deals with its control. Boost inverter consists of Boost DC-DC converters that have to be controlled in a variable-operation point condition. The sliding mode control has been proposed as an option. However, it does not directly...
Permanent magnets with high energy products are widely used in a variety of electromagnetic devices. The process of magnetization requires generation of intense magnetic fields in close proximity with the magnetic material to be magnetized. The fields however need to be produced for a short time of the order of a millisecond. The intense magnetic field is produced by passage of a very heavy current...
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