Study of multi-objective photovoltaic grid connected system using SOGI-FLL and NL-SOGI-FLL-APF based DQ hysteresis method

Shah, Prashant K; Kotwal, Chetan; Giri, Ashutosh; Babu, B. Chitti

doi:10.1007/s00202-023-01817-3

Cited by 5 publications

(1 citation statement)

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“…According to the literature, the MFCs' control schemes include a reference current generation stage, voltage and current control loops, and a pulse width modulation (PWM) stage for switching signal generation. Classical techniques such as instantaneous pq-theory [8], synchronous reference frame (SRF) theory [9], conservative power theory (CPT), positive fundamental component estimation (PFCE), and other optimization-based techniques are typically used to generate the requisite reference current. In instantaneous pq-theory, SRF-theory, CPT, and other classical reference generation techniques, phase-locked loops (PLLs) for grid synchronization and lowpass filters (LPFs) are crucial components.…”

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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Section: Introductionmentioning

confidence: 99%