研究目的
Investigating the application of LQR control for a multifunctional grid integrated residential solar systems with APF capabilities.
研究成果
The paper demonstrates the effectiveness of the LQRI controller in managing the active power generated by solar panels and compensating for harmonic currents in a single-phase AC distribution system. The controller shows good performance in both steady state and dynamic response, with low THD of grid current and small settling time and overshoot.
研究不足
The study focuses on single-phase systems, and the proposed control scheme's performance in three-phase systems or under more complex grid conditions is not explored.
1：Experimental Design and Method Selection:
The study employs a Linear Quadratic Regulator with added Integral action (LQRI) for optimal multi-functionality operation of the residential power supply. The perturb and observe (P&O) algorithm is used for MPPT.
2：Sample Selection and Data Sources:
The system consists of SPV panel, a VSI, an LCL filter feeding linear and nonlinear residential loads.
3：List of Experimental Equipment and Materials:
Includes a single phase power converter connected to the grid through an LCL filter, SPV array, and Cdc as the dc bus capacitor.
4：Experimental Procedures and Operational Workflow:
The system is tested under linear and nonlinear load conditions, including load power variation, insolation variation, load switching on/off and off/on, and SPV-APF to APF transition mode.
5：Data Analysis Methods:
Simulation and experimental results are analyzed to confirm the performance of the proposed controller.
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