研究目的
Investigating the effectiveness of a speed sensorless vector controlled induction motor drive fed from a solar PV array for water pumping applications, with a focus on decoupling control through an additional feedforward loop.
研究成果
The proposed two-stage solar PV fed drive system with a decoupling feedforward term in the vector control loop demonstrates improved performance in terms of speed control and phase current profiles. The system is validated through simulation and experimental setup, showing suitability for wide range speed control in water pumping applications.
研究不足
The study is limited to the specific configuration of a solar PV array fed induction motor drive for water pumping. The performance is climate-dependent, and the system's efficiency may vary with changes in solar irradiance.
1：Experimental Design and Method Selection:
The study employs a stator flux oriented sensorless technique in a stationary reference frame for vector control of an induction motor drive. A feedforward loop is added to the existing vector control loop to achieve decoupling.
2：Sample Selection and Data Sources:
A 3-phase induction motor drive (IMD) of
3：2kW (3HP), 4 poles, 230V is used, powered by a solar PV array. List of Experimental Equipment and Materials:
Includes a photovoltaic simulator (ETS600x17DPVF TerraSAS), hall-effect voltage sensor (LV-25P), current sensors (LA-55P), VSI (SEMIKRON MD B6CI 600/415–35F), and a real-time DSP controller (dSPACE 1104).
4：4). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The system is simulated in MATLAB/Simulink and validated on a laboratory test setup. Performance is evaluated under variable irradiance conditions.
5：Data Analysis Methods:
Performance indices such as PV voltage (Vpv), PV current (Ipv), motor current (ia), and motor speed (ωm) are analyzed to validate the system's effectiveness.
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