Optimal Control of a Compact Converter in an AC Microgrid

Smadi, Issam A.; Albatran, Saher; Alsyouf, Mohammad A.

doi:10.3390/electronics7070102

Cited by 6 publications

(5 citation statements)

References 19 publications

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“…The PWM scheme uses the service cycle to regulate the inverter's output voltage [21]. The service cycle is expressed as a percentage of the total time.…”

Section: Duty Cycle Of Pwm Technologymentioning

confidence: 99%

Phase Shift APOD and POD Control Technique in Multi-Level Inverters to Mitigate Total Harmonic Distortion

Bano,

Abbas,

Hatatah

et al. 2024

Mathematics

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Multi-level inverters are widely employed to generate new energy because of their huge capacity and benefits in sound control performance. One of the critical areas of study for multi-level inverters is control strategy research. In this study, the control strategy for a multi-level inverter—which is frequently employed in HVDC and FACTS systems—is designed. An asymmetrical D.C. voltage source is supplied to create the appropriate output voltage waveform with fewer total harmonic distortions (THDs) at the output voltage and current waveforms. In this work, the pulse width modulation techniques of POD (phase opposition disposition) and APOD (alternative phase opposition disposition) MC PWM are applied to a multi-level inverter to generate the seven-level output voltage waveform. This study presents an enhanced variable carrier frequency APOD control approach that can successfully lower the overall harmonic distortion rate. The design and completion of the phase-shifting POD and APOD control strategies are followed by an analysis and comparison of the THD situation under various switching frequencies and a simulation and verification of the control strategy using MATLAB simulation. The TI DSP-based control approach has been programmed. The APOD technique increases the output voltage’s THD to 18.27%, while the output current waveform’s THD is reduced to 15.67% by utilizing the APOD PWM technique. Using the POD PWM approach increases the total harmonic distortion (THD) of the voltage waveform by 18.06% and the output current waveform’s THD by 15.45%.

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“…The PWM scheme uses the service cycle to regulate the inverter's output voltage [21]. The service cycle is expressed as a percentage of the total time.…”

Section: Duty Cycle Of Pwm Technologymentioning

confidence: 99%

Phase Shift APOD and POD Control Technique in Multi-Level Inverters to Mitigate Total Harmonic Distortion

Bano,

Abbas,

Hatatah

et al. 2024

Mathematics

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“…The modelling of the three different parts of the diesel generator was adopted from [41]. The dynamics of each diesel generator components can be given by ( 5) and (8).…”

Section: Diesel Generatormentioning

confidence: 99%

“…A new power control method, based on the artificial neural network (ANN) to control the power quality of PV-incorporated AC-MGs, was presented by Kaushal et al [7]. For controlling the VSI of a grid-tied AC-MG, Smadi et al proposed a compact control strategy based on dq CCS [8]. By cascading the voltage and current controller, a new power control scheme was proposed by Lou et al for an AC-MG VSI [9].…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Logic-Based Direct Power Control Method for PV Inverter of Grid-Tied AC Microgrid without Phase-Locked Loop

et al. 2021

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A voltage source inverter (VSI) is the key component of grid-tied AC Microgrid (MG) which requires a fast response, and stable, robust controllers to ensure efficient operation. In this paper, a fuzzy logic controller (FLC)-based direct power control (DPC) method for photovoltaic (PV) VSI was proposed, which was modelled by modulating MG’s point of common coupling (PCC) voltage. This paper also introduces a modified grid synchronization method through the direct power calculation of PCC voltage and current, instead of using a conventional phase-locked loop (PLL) system. FLC is used to minimize the errors between the calculated and reference powers to generate the required control signals for the VSI through sinusoidal pulse width modulation (SPWM). The proposed FLC-based DPC (FLDPC) method has shown better tracking performance with less computational time, compared with the conventional MG power control methods, due to the elimination of PLL and the use of a single power control loop. In addition, due to the use of FLC, the proposed FLDPC exhibited negligible steady-state oscillations in the output power of MG’s PV-VSI. The proposed FLDPC method performance was validated by conducting real-time simulations through real time digital simulator (RTDS). The results have demonstrated that the proposed FLDPC method has a better reference power tracking time of 0.03 s along with reduction in power ripples and less current total harmonic distortion (THD) of 1.59%.

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“…In [31], an artificial neural network (ANN) based power control is presented to enhance the power quality of a photovoltaic-based inverter connected to a grid-tied AC microgrid. An optimal controller is designed for power control of VSI connected in a grid-tied microgrid [32]. The controller parameters are obtained by using particle swarm optimization (PSO) to minimize a cost function.…”

Section: Introductionmentioning

confidence: 99%

Active and Reactive Power Control of the Voltage Source Inverter in an AC Microgrid

Khan

Memon²

2023

Sustainability

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This paper presents the mathematical model and control of a voltage source inverter (VSI) connected to an alternating current (AC) microgrid. The VSI considered in this paper is six switches three-phase Pulse Width Modulated (PWM) inverter, whose output active and reactive power is controlled in the dq reference frame. The control strategy presented here is state feedback control with disturbance cancellation. This disturbance signal is either provided by a voltage sensor or estimated using a presented extended high gain observer (EHGO). The control strategy without EHGO requires a current sensor and a voltage sensor, and the control strategy with EHGO requires only a current sensor. The EHGO is saving the requirement of a voltage sensor. The stability analysis of the presented control strategy is showing that the error is ultimately bounded in the presence of disturbance, formed due to Pulse Width Modulated (PWM) inverters. The microgrid is simulated using the SimPowerSystems Toolbox of MATLAB/Simulink. The simulation results are also showing the effectiveness of the proposed control strategy, that the output active and reactive power control is achieved with ultimately bounded errors. The comparison of the proposed control with the PI-based control scheme is also presented, and it is shown that better reference tracking with the desired settling time of “0.04 s” is achieved with the proposed control.

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Optimal Control of a Compact Converter in an AC Microgrid

Cited by 6 publications

References 19 publications

Phase Shift APOD and POD Control Technique in Multi-Level Inverters to Mitigate Total Harmonic Distortion

Phase Shift APOD and POD Control Technique in Multi-Level Inverters to Mitigate Total Harmonic Distortion

Fuzzy Logic-Based Direct Power Control Method for PV Inverter of Grid-Tied AC Microgrid without Phase-Locked Loop

Active and Reactive Power Control of the Voltage Source Inverter in an AC Microgrid

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