An Adaptive Differentiation Frequency Based Advanced Reference Current Generator in Grid-Tied PV Applications

Babu, P. Narendra; Peesapati, Rangababu; Panda, Gayadhar

doi:10.1109/jestpe.2019.2933140

Cited by 32 publications

(17 citation statements)

References 39 publications

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“…The calculated (

I_{ra}

I_{rb}

, and

I_{rc}

) and actual grid

I_{ga}

I_{gb}

, and

I_{gc}

currents are given input to the PWM controller to evaluate the switching signals to the grid‐forming inverter for power quality enrichment by mitigating the harmonics in REGS applications. For the dc‐link voltage controller, the fuzzy gain tuning PID controller 11,37 is considered in the proposed controller.…”

Section: Proposed Control Schemementioning

confidence: 99%

“…In Reference 10, the authors have introduced a hybrid P&O with PSO‐based MPPT technique for the dc–dc converter to extract the maximum power from the PV system. In Reference 11, the authors have been employed a fuzzy gain scheduling proportional‐integral‐derivative (PID) for dc‐link voltage with an adaptive grid‐forming inverter control scheme for power quality and fundamental weight component (FWC) extraction.…”

Section: Introductionmentioning

confidence: 99%

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Improved power quality with an adaptive grid‐forming inverter control scheme in solar PV system

Dadinaboina

Pedakota²,

Chinnathambi

et al. 2021

Int Trans Electr Energ Syst

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In this paper, an improved fractional order notch filter (IFONF)-based gridforming inverter control scheme is employed to mitigate the harmonics in photovoltaic system applications. Moreover, a fuzzy gain tuning proportionalintegral-derivative (FTPID) controller is developed for the dc-link voltage to maintain its reference value. The proposed FTPID-IFONF control scheme is executed to evaluate the active fundamental weight components (FWC) of the load currents and distorted grid voltages consequently generates the PWM pulses to the grid-forming inverter for power quality enrichment in a grid integration with photovoltaic applications. The integer order based filters have some constraints due to differentiator term and fixed integrator. For this reason, an improved design of an integer order notch filter is suggested in the proposed FTPID-IFONF controller scheme. The behavior of the proposed FTPID-IFONF control scheme is found good in-terms of elimination of dc offset, grid-synchronization, separation of fundamental components, adaptive behavior and harmonic elimination at the consumer terminals. The proposed controller is validated under several load and grid dynamic conditions such as steady-state, grid voltage sag-swell, distorted, load dynamic and removed conditions on MATLAB/Simulink platform. A prototype PV integrated with grid setup is constructed to validate the proposed system in the real-time. The FTPID-IFONF control scheme is well justified under several grid and load dynamic conditions and the harmonic distortions of the grid characteristics are found well based on the limits of IEEE-519 standards. A comparative study is also analyzed to show the effectiveness of the controller with recently published works.

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“…The calculated (

I_{ra}

I_{rb}

, and

I_{rc}

) and actual grid

I_{ga}

I_{gb}

, and

I_{gc}

Section: Proposed Control Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved power quality with an adaptive grid‐forming inverter control scheme in solar PV system

Dadinaboina

Pedakota²,

Chinnathambi

et al. 2021

Int Trans Electr Energ Syst

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show abstract

“…These feedback signals, capacitor voltage, and reference signals set as inputs to the controller. Synchronous reference frame (SRF) control method has been used for control of output voltage and capacitor voltage using two control loops, and its modified version is discussed in the study by Babu et al The outer voltage loop is used to generate reference current

I_{d}^{*}

and

I_{q}^{*}

for the inner current loop as shown in Figure B,C. The inner current loop generates the gate control signals to the HC‐MLI.…”

Section: Simulation and Experimantation Validationmentioning

confidence: 99%

“…The pulse patterns are obtained using a look‐up table depending on the values of m a . The outputs of the controller block are given to the digital output modules of DSP for generating the gate control signals (G s , G s1 , Gs 2 , Gs 3 , … and Gs n ) . The dc source ( V DC ) of the two primary H‐bridges is taken as 60 V whereas that for the capacitor voltage ( V CAP ) of the additional H‐bridge (H 3 ) shown in Figure is taken as 30 V. The capacitance is chosen as1000 μF.…”

Section: Simulation and Experimantation Validationmentioning

confidence: 99%

Selective harmonic elimination in hybrid cascaded multilevel inverter using modified whale optimization

Routray

Singh

Mahanty

2019

Int Trans Electr Energ Syst

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Summary This article presents a modified whale optimization (MWO) for harmonic mitigation in a three‐phase 11‐level hybrid cascaded multilevel inverter (HC‐MLI). The proposed MWO has improved rate of convergence as compared with conventional whale optimization (WO). This is achieved by improving the exploration‐exploitation feature of the conventional WO. Selective harmonic elimination–pulse width modulation technique is applied through MWO for generating the optimal switching angles of the HC‐MLI so as to eliminate the lower‐order harmonics such as 5th, 7th, 11th, and 13th from the output voltage. In the proposed MWO optimized HC‐MLI, capacitor voltage balance is made possible even at higher modulation indices using the available redundant switching states of HC‐MLI. The proposed work is useful where the HC‐MLI has to work at the low switching frequency and the conversion efficiency is of prime importance such as medium‐ and high‐power motor drives, static synchronous compensators, and active power filters. The performance of the proposed work is validated through simulation and experimentation on a 1.5‐kW prototype. The results obtained show that the MWO algorithm is more efficient and accurate than other reported algorithms such as genetic algorithm, particle swarm optimization, and WO in terms of performance, harmonic mitigation, and rate of convergence.

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“…They have not fully explored the parametric uncertainties present in the system. In [22][23][24][25], the authors have proposed an adaptive current control regulator for grid-connected PV solar applications. They have explored the harmonic suppressions present in the grid PV system and proposed robust fuzzy logic-based active filter to prevent malfunctioning of devices.…”

Section: Introductionmentioning

confidence: 99%

Stability assessment and robust controller design of grid interactive offshore wind farm and marine current farm with STATCOM and BFCL

2020

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An Adaptive Differentiation Frequency Based Advanced Reference Current Generator in Grid-Tied PV Applications

Cited by 32 publications

References 39 publications

Improved power quality with an adaptive grid‐forming inverter control scheme in solar PV system

Improved power quality with an adaptive grid‐forming inverter control scheme in solar PV system

Selective harmonic elimination in hybrid cascaded multilevel inverter using modified whale optimization

Stability assessment and robust controller design of grid interactive offshore wind farm and marine current farm with STATCOM and BFCL

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