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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...
Due to steadily increased in wind power penetration, regulatory standards for grid interconnection have evolved to require that wind generation systems ride-through disturbances such as faults and support the grid during such events. Keeping the converter online during and after short-circuit faults, and guaranteeing the actual standards of the converter connected to the grid, is becoming a very critical...
We present a decentralized, communication-less approach to the dynamic allocation of a swarm of homogeneous robots to a target distribution among multiple sites. Building on our work, we optimize stochastic control policies for the robots that cause the population to quickly redistribute among the sites while adhering to a limit on inter-site traffic at equilibrium. We propose a way to account for...
Implementations of synchronous programs on distributed hardware modules are infeasible if the totality of hardware is viewed as a single monster circuit. The zero execution time semantics that govern the interaction between the system and the environment has to be adapted to the inter module interaction. This interaction is at micro-instants and the signals exchanged are tentative at the start and...
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