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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...
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),...
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...
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