MATLAB Implementation of Solar PV Battery Powered Electric Vehicle
System Overview
Electric Vehicle Loads: The vehicle features local loads like lamp and AC loads, and a BLDC motor drive responsible for vehicle propulsion.
Control Mechanism: The speed of the BLDC motor is controlled through a PA controller, which compares actual speed with a drive cycle command to generate the necessary duty cycle for operation.
Solar Panel and Power Generation
Solar Panel Setup: The system utilizes eight 250W solar panels arranged in series, producing a total of 2,000W. The panels are designed to operate at a maximum power point voltage of 30.7V and current of 8.15A.
Boost Converter: A boost converter elevates the voltage from 245V to the required 400V, controlled by an MPPT (Maximum Power Point Tracking) algorithm to adapt to varying irradiation conditions.
Battery Storage and Power Management
Battery Integration: The battery system acts both as a source and load. It charges when solar power exceeds demand and discharges to supply power when solar generation is insufficient.
Voltage Control: A voltage control method maintains a constant DC bus voltage by adjusting the current flow direction based on the power balance in the system.
Simulation and Results
Drive Cycle Simulation: The simulation includes a drive cycle where the BLDC motor accelerates from 0 to 2,000 RPM, maintains speed, and then decelerates.
Performance Monitoring: The model tracks various parameters, including PV voltage, current, battery status, and electric vehicle power input. It demonstrates effective speed control and efficient power management.
Conclusion
This simulation highlights the feasibility of solar PV-powered electric vehicles, showcasing efficient energy management through integrated battery systems.
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