Sliding Mode Controller with Integral Action for DC-Link Voltage Control of Grid-Integrated Domestic Photovoltaic Systems

Kumar, Nisha B; Urundady, Vinatha

doi:10.1007/s13369-020-04531-5

Cited by 8 publications

(4 citation statements)

References 29 publications

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“…The main functionality of the DCL capacitor is to store or supply the surplus power demand during transience and to lower the DC ripples [13]. It is designed according to [21] as, 4…”

Section: Loss Analysismentioning

confidence: 99%

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Design and Performance Evaluation of a Step-Up DC–DC Converter with Dual Loop Controllers for Two Stages Grid Connected PV Inverter

et al. 2022

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In this work, a non-isolated DC–DC converter is presented that combines a voltage doubler circuit and switch inductor cell with the single ended primary inductor converter to achieve a high voltage gain at a low duty cycle and with reduced component count. The converter utilizes a single switch that makes its control very simple. The voltage stress across the semiconductor components is less than the output voltage, which makes it possible to use the diodes with reduced voltage rating and a switch with low turn-on resistance. In particular, performance principle of the proposed converter along with the steady state analysis such as voltage gain, voltage stress on semiconductor components, and design of inductors and capacitors, etc., are carried out and discussed in detail. Moreover, to regulate a constant voltage at a DC-link capacitor, back propagation algorithm-based adaptive control schemes are designed. These adaptive schemes enhance the system performance by dynamically updating the control law parameters in case of PV intermittency. Furthermore, a proportional resonant controller based on Naslin polynomial method is designed for the current control loop. The method describes a systematic procedure to calculate proportional gain, resonant gain, and all the coefficients for the resonant path. Finally, the proposed system is simulated in MATLAB and Simulink software to validate the analytical and theoretical concepts along with the efficacy of the proposed model.

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“…The main functionality of the DCL capacitor is to store or supply the surplus power demand during transience and to lower the DC ripples [13]. It is designed according to [21] as, 4…”

Section: Loss Analysismentioning

confidence: 99%

“…This controller has a fast dynamic response but the waveforms suffer from chattering phenomena. To enhance the SMC performance and smoothen the shattering effect, the authors introduced an integral term in the SMC [13]. The performance of the PV system is enhanced to a great extent by using fuzzy PI and fuzzy SMC controllers in [14].…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Evaluation of a Step-Up DC–DC Converter with Dual Loop Controllers for Two Stages Grid Connected PV Inverter

et al. 2022

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“…Although the SMC techniques have also been introduced in [19][20][21][22][23] and adopted for control in motor drives [24][25][26][27][28], they have not been efficiently employed in the field of grid-connected inverters. Authors in [29,30] used the SMC for controlling the dc side of the single phase inverter. Authors in [31,32] introduced the 2-level single phase inverters.…”

Section: Introductionmentioning

confidence: 99%

Control of a Grid-connected Inverter using Sliding Mode Control

Tran

2024

Eng. Technol. Appl. Sci. Res.

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The rising popularity of grid-connected multilevel inverters with photovoltaic panels underscores the importance of effective modulation and control strategies for ensuring optimal power quality. The performance of these inverters hinges significantly on modulation and control approaches, specifically addressing issues like common mode voltage, harmonics, switching loss, and dynamic response. This study introduces a novel approach to mitigate current harmonics in these inverters by employing sliding mode control. Notably, this technique achieves harmonic reduction without necessitating an increase in the switching count. The presented technique eliminates phase-locked loop, current controllers, and carrier waves, thereby easing hardware computation. Beyond computational efficiency, this approach contributes to enhanced power quality and dynamic response within the inverter system. Simulation results affirm the efficacy of the proposed method when compared to the use of the phase opposite disposition modulation combined with the current controllers. In the nominal operational mode, the proposed method reduces the current Total Harmonic Distortion (THD), the highest magnitude of individual harmonics, and the switching count by 43.6%, 73.5%, and 19.6% respectively, compared with those of the method using the phase opposite disposition modulation combined with current controllers.

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“…One significant focus of that study was on increasing the performance of MFCs by the use of nonlinear control techniques and so-called advanced control strategies. Sliding mode controller (SMC) for grid-integrated PV systems was reported in [15][16][17]. SMC has the benefit of being more resistant to external disturbances and parameter uncertainties.…”

Section: Introductionmentioning

confidence: 99%

Solar Photovoltaic Fed Three-Phase Multifunctional Converter Operation Using a Nonlinear Control Strategy

Majji,

Mishra

2023

Preprint

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A nonlinear control strategy for a solar photovoltaic (SPV) integrated three-phase multifunctional converter (3PMFC) is proposed in this study. The proposed control strategy encapsulates the Lyapunov function controller (LFC) for the voltage control loop and a model predictive controller (MPC) for the current tracking control loop. The SPV source is integrated into the 3PMFC’s dc-link via a dc-dc boost converter. Aside from injecting active power generated by the SPV into the utility system at the unity power factor, the control algorithm of a 3PMFC includes multifunctional features such as current harmonic compensation, reac-tive power support, and source current balance. The dc-dc boost converter and 3PMFC reference currents are calculated using an incremental conductance-based maximum power point tracking (MPPT) algorithm and a variable conductance factor (VCF) technique, respectively. Furthermore, the MPC algorithm is used to design the current tracking controllers for the dc-dc boost converter and 3PMFC. The effectiveness of the proposed control technique was evaluated using different solar irradiation, dc-loads, and ac-loads (linear balanced, linear unbalanced , and nonlinear loads). Finally, under a dynamic operation scenario, the performance of the proposed control technique is assessed and validated using MATLAB/Simulink and real-time simulator (OPAL-RT OP4510) results.

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Sliding Mode Controller with Integral Action for DC-Link Voltage Control of Grid-Integrated Domestic Photovoltaic Systems

Cited by 8 publications

References 29 publications

Design and Performance Evaluation of a Step-Up DC–DC Converter with Dual Loop Controllers for Two Stages Grid Connected PV Inverter

Design and Performance Evaluation of a Step-Up DC–DC Converter with Dual Loop Controllers for Two Stages Grid Connected PV Inverter

Control of a Grid-connected Inverter using Sliding Mode Control

Solar Photovoltaic Fed Three-Phase Multifunctional Converter Operation Using a Nonlinear Control Strategy

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