With the emergence of smart grid (SG), real-time interaction is favorable for both residents and power companies in optimal load scheduling to alleviate electricity cost peaks demand. In this paper, a modular framework introduced efficient scheduling. The proposed comprised four modules: company module, forecaster home energy management controller (HEMC) resident module. module receives demand response (DR), information (real-time pricing scheme (RTPS) critical peak (CPPS)), from forecast...

Considering the aim of having low switching losses, especially in medium-voltage and high-power converters, pre-programmed pulse width modulation technique is very useful because generated harmonic content can be known advance optimized. Among different frequency techniques, Selective Harmonics Elimination (SHE) method most suitable its direct control over spectrum. This paper proposes a for obtaining multiple solutions selectively eliminating specific harmonics wide range indices by using...

Pulse width modulation (PWM) control for power converters have been vastly investigated and used in many industrial application. For medium voltage high applications, low switching frequency PWM techniques are preferred over frequency-based techniques. The preprogrammed technique known as selective harmonics elimination (SHE) gives the better quality waveform at a lower frequency. main difficulty applying SHE is solving of non-linear transcendental equations obtaining angles. Several methods...

Low switching frequency pulse width modulation (PWM) technique for and control of multilevel inverter in medium voltage high power applications is preferred order to reduce the losses. In this context, a operated with Selective harmonics minimization PWM offers better quality waveform at reduced After Fourier series analysis, system non-linear simultaneous transcendental equations obtained. These are then solved obtain angles have certain low minimum value regulation fundamental magnitude....

Few switching transition in high-power and medium-voltage application of power converters is desirable. The optimal pulse-width modulation (OPWM) at fundamental frequency offers a better quality waveform lower losses. It preprogrammed technique where certain amounts order harmonics are controlled voltage maintained. Here, set nonlinear transcendental equations obtained, which exhibits multiple, unique, or no solution different range index (MI). This paper proposes an advanced fast method to...

Sun, a free source of energy, has moved the world to consider photovoltaic (PV) system as green renewable energy since fossil fuel power plant accounts for significant share greenhouse gas (GHG) emissions across globe. The output PV is limited many factors; however, acute accuracy orientation (tilt and azimuth) angles exposes surfaces high doses solar radiations. Which increases output; in turn GHG mitigation potential. This paper draws relationship between impact on system's For reference,...

Abstract The reduced switch multilevel inverters are used in many applications specially renewable energy system. They have a smaller number of semiconductor devices, complexity and thus lower cost power losses. A reduced-switch (MLIs) with quadruple boosting capability been investigated this study by implementing an optimized harmonic pulse width modulation (OPWM) technique. As example, nine-level inverter, operating at fundamental frequency, is analysed to reduce the dominant order...

In the design of cross flow turbines, efficiency is a significant parameter. The crossflow turbine for developing nations most cost-efficient electricity generation source and often used in isolated power systems. This research work analyzes potential production using micro-cross from sewage lines. To measure hydraulic sewage’s wastewater, rate at connection point was investigated by experimentation on site micro evaluated. experimental results show that selected enough throughout year. It...

In this paper, space vector pulse width modulation (SVPWM)-based algorithms for a five-phase open-end load fed from dual matrix converter (DMC) have been proposed. the presented methods, reference output voltage is synthesized two three-to-five phase converters at both ends of load. Depending on power-sharing MCs, proposed methods are defined as equal sharing (ERS) and unequal (URS). The performance ERS URS DMC drive compared. Performance comparison based total harmonic distortion in...

For medium voltage high power application the modulation technique for converters based on pre-computed Pulse Width Modulation (PWM) switching patterns can be very useful since generated harmonic content previously known and optimize. The main challenge in applying harmonics elimination techniques at lower frequency is solving system of non-linear transcendental equations obtained by Fourier analysis. numerical offer simple procedure lesser number angles with proper initial guess. However,...

In medium voltage high power applications good quality waveform with low switching losses is more preferred. this context, frequency modulation techniques based on pre-computed PWM patterns very useful because the generated harmonic content known in advance and therefore can be optimized as much possible. Among different Pulse width (PWM) techniques, Selective harmonics elimination (SHE) method widely investigated applied of direct control over spectrum. This paper proposes a for obtaining...

The multilevel inverter (MLI) is more preferred for medium voltage high power application as it produces better quality waveforms (stepped in nature) with reduced harmonic distortion (less THD), operates at less switching frequency and impress low current stress on the devices. A modulation techniques known selective harmonics elimination (SHE) PWM based pre-computed patterns further improves operation. In this paper a level waveform Pulse width (PWM) has been proposed. output compliance...

This paper presents a low switching frequency–based pulse width modulation technique for 3 × indirect matrix converter. The nontriplen lower-order harmonics are considered minimization using differential evolution–based metaheuristic technique. mathematical equations formulated while considering of nontriplet along with control fundamental voltage. An objective function is constructed by all the constraints on feasible region and then it minimized evolution It observed that solution in...

In this paper implementation of a micro-controller based pulse width modulation for multilevel quasi Z source inverter (qZSI) is presented. First component design qZSI taken into consideration with continuous and discontinuous operation mode. low switching frequency After detailed modelling established implementing PIC microcontroller (PIC 16F877A) to generate the signals. Development ofa five-level z-source prototype done by proper adjustment shoot through (ST) state non-shoot (NST) control...

A modulation and control of grid connected quasi Z-source Inverter (qZSI) in closed loop for solar photovoltaic system is proposed this paper. The detailed average small-signal modeling obtained qZSI, derived from inverter investigated operation system. boundaries continuous conduction discontinuous modes the qZSI network are identified made to work mode only. mathematical done using state-space its control. MATLAB/SIMULINK model developed tested algorithm.

In medium voltage high power application of source inverter (VSI), low switching frequency pulse width modulation (LSPWM) techniques offer better efficiency and thermal management as the loss decreases drastically. The number transitions are very limited, hence getting a good quality output waveform is drawback in LSFPWM. To overcome this problem, selective harmonics elimination (SHE) PWM used to eliminate any desired from by turning ON OFF semiconductor switches at predefined time. However,...

For medium voltage high power applications the low switching frequency PWM techniques for converters is preferred. In preprogrammed based technique, main difficulty in solving set of non linear transcendental equations obtaining instants. Also, number harmonics eliminated from output are dependent on angles. Moreover, there no control harmonic components. this paper a new pulse width amplitude modulation technique have been proposed to eliminate multiple waveform. The mathematical modelling...

Distributed Generation (DG) has emerged as best alternative to conventional energy sources in recent times. Decentralization of power generation, improvement voltage profile and reduction system losses are some key benefits DG integration into the grid. However, introduction changes radial nature a distribution network (DN) may affect both magnitude direction fault currents. This phenomenon have severe repercussions for reliability safety DN including protection coordination failure. paper...

Energy resources and their management is one of the prime challenges to the world especially low economy developing countries like Malaysia where the majorcontribution to energy generation is based on imports setting a considerableweight on the country economy. This overwhelming is causing affliction to policymakers and researchers. Domestic energy landscape has changed significantlyover the years. From being an energy...

In this study, a high gain single controlled switch converter with continuous input current design and closed loop operation parasitic elements have been developed. compared to widely used converters like buck-boost, SEPIC, Cuk, Zeta, the under consideration provides voltage gain. The main advantage of includes its only controllable semiconductor low stress across switches. is suitable for solar photovoltaic (PV) use since large filter at not required as here. circuit analysis, design,closed...