Implementation of EMD‐based control algorithm for a cascaded multilevel inverter–based shunt active filter

Dash, Ashish Ranjan; Panda, Anup Kumar; Lenka, Rajesh Kumar

doi:10.1002/2050-7038.12087

Cited by 13 publications

(15 citation statements)

References 40 publications

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“…Where V min and V max are the minimum and maximum magnitudes of the three sampled reference phase voltages in a sampling interval. In every sampling interval, the active inverter switching vectors being centred due to the addition of V offset , and which leads the SPWM technique equivalent to the space vector PWM technique presented in 18‐20 . For generate PWM for the multilevel inverters, the SPWM technique compares the reference phase voltage signals with a number of symmetrical level‐shifted carrier waves.…”

Section: Shunt Active Power Filtermentioning

confidence: 99%

Genetic algorithm based reference current control extraction based shunt active power filter

Sundaram¹,

Gunasekaran²,

Ramakrishnan³

et al. 2020

Int Trans Electr Energ Syst

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Section: Shunt Active Power Filtermentioning

confidence: 99%

Genetic algorithm based reference current control extraction based shunt active power filter

Sundaram¹,

Gunasekaran²,

Ramakrishnan³

et al. 2020

Int Trans Electr Energ Syst

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“…The inverters are classified as square‐wave inverter and multilevel inverter (MLI). The MLIs have gained more popularity because of the improved quality of the output AC waveform, reduced voltage stress on switches, and low electromagnetic interference 7,8,12‐18 . The output of MLI is a staircase waveform, which approximates the sinusoidal wave.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of switching angle calculation methods for multilevel inverters

Muthyala

Dhabale

2021

Int Trans Electr Energ Syst

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Summary A multilevel inverter produces an output to approximate a desired sine wave. The closeness of the output waveform to the sine wave depends on the logic applied for switching angle calculation, resulting in different switching angle calculation methods. In this paper, various switching angle calculation methods are compared based on of the parameters quantifying the quality of the output waveform. The main focus of this work is on the study of convergence of the output waveform to a smooth waveform as number of levels increases theoretically. The convergence is analytically proved and validated numerically by computing up to 201 levels. Also, a parameter quantifying the deviation of the output waveform from the sine wave is defined, and its closed form expression is derived. This parameter is strongly correlated to and computationally less expensive than the total harmonic distortion. Hence, the deviation is proposed as a better measure of the quality of the output wave form. The convergence and the deviation of the output waveform are also used as the basis of the comparison of different switching angle calculation methods. These two give a better insight into the switching angle calculation methods. The analysis presented in this paper provides a good understanding of various switching angle computation methods and helps in choosing an appropriate method for a given application.

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“…For instance, in [18], a cascade H-bridge (CHB) based multilevel converter was used as a static VAR compensator (STATCOM) in a wind farm. Additionally, a CHB-based SAPF using single-phase toroidal core transformers in cascaded configuration was presented in [19], which allowed the system to operate with a single DC-link capacitor. Furthermore, a detailed comparison of multilevel topologies' characteristics and their applications were presented in [20,21].…”

Section: Introductionmentioning

confidence: 99%

Control Design and Experimental Validation of a HB-NPC as a Shunt Active Power Filter

et al. 2020

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This work presents the design of a control law based on the average model of a shunt active power filter considering an H-bridge neutral point clamped topology and its experimental validation. Therefore, the proposed controller is formed by three control loops, namely current (inner), regulation (outer), and balance control loops. The current loop aims to compensate both the displacement power factor and the harmonic distortion produced by nonlinear loads connected to the point of common coupling. To deal with harmonic current distortion, the current loop involves an adaptive mechanism based on a bank of resonant filters tuned at odd harmonics of the fundamental grid frequency. The regulation and balance loops are aimed to maintain the voltage of the capacitors forming the DC-link at a desired constant level. For this, proportional-integral controllers are designed. The design of all three loops considers the average model of the system. The performance of the proposed multi-loop control law is evaluated through numerical results and real-time experimental implementation, both considering a 2 kW academic benchmark with a constant switching frequency of 7 kHz. In order to provide harmonic distortion, a nonlinear load based on an uncontrolled diode bridge rectifier is considered. Additionally, step-load changes from 0.5 kW to 1 kW are considered for the nonlinear load. As a result, a suitable current tracking, voltage regulation, and balance are observed despite parametric uncertainties, load variations, and harmonic distortion. As a consequence, in steady state, simulation results indicate that the compensated grid current THD is 1.75%; meanwhile, the nonlinear load current THD is 52.5%. Experimental results indicate that the compensated grid current THD is 2.32%; meanwhile, the nonlinear load current THD is 53.8%.

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Implementation of EMD‐based control algorithm for a cascaded multilevel inverter–based shunt active filter

Cited by 13 publications

References 40 publications

Genetic algorithm based reference current control extraction based shunt active power filter

Genetic algorithm based reference current control extraction based shunt active power filter

Comparative analysis of switching angle calculation methods for multilevel inverters

Control Design and Experimental Validation of a HB-NPC as a Shunt Active Power Filter

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