Solar PV Battery Driven Electric Vehicle in MATLAB
Introduction:
We delve into the assembly and functionality of a Solar PV Battery Driven Electric Vehicle utilizing a Transformerless Buck Boost Converter. This advanced system integrates solar power with battery storage to drive an electric vehicle efficiently.
System Components
1. Solar PV Panel
Rating: 1830 watts at 25°C and 1000 watts per square meter.
Configuration: Two series strings and three parallel strings.
2. Transformerless Buck Boost Converter
Function: Extracts maximum power from the PV panel using MPPT (Maximum Power Point Tracking) algorithm.
Operation: Switches between buck and boost modes as per load requirements.
3. Battery and Control
Type: Four 40 Ah batteries.
Control: Bi-directional DC-DC converter manages battery charging and discharging based on DC bus voltage.
4. Electric Motor
Type: PMDC Motor.
Function: Powers the electric vehicle continuously using power from PV panels and batteries.
5. Measurement System
Parameters Measured: PV voltage, current, and power; Battery voltage, current, State of Charge (SoC); DC bus voltage; Motor speed, torque, and current.
Simulink Model Explanation
1. Solar PV and MPPT
Function: The PV panel generates power based on irradiation levels (modeled at 2000, 1000, and 1500 watts per square meter).
MPPT Control: Ensures the buck boost converter operates optimally to track and extract maximum power under varying environmental conditions.
2. Battery Management
Charge Control: Bi-directional DC-DC converter manages battery charging when PV power exceeds demand.
Discharge Control: Ensures the battery supplies power during low irradiation periods or high motor demand.
3. Electric Motor Drive
Continuous Power: PMDC motor receives power from both PV panels and batteries, maintaining vehicle operation.
Stable Operation: Motor speed and torque are monitored to ensure consistent performance under changing power conditions.
Simulation Results and Discussion
1. Power Generation and Distribution
PV Output: Initially peaks at 1860 watts and adjusts with irradiation changes (e.g., drops to 950 watts with reduced sunlight).
Battery Operation: Charges when excess PV power is available and discharges during low irradiation, maintaining vehicle power.
2. Motor Performance
Steady Operation: Motor speed and torque remain stable around 1700 RPM and maintain a constant current, adapting to varying power inputs.
Conclusion The integration of a Transformerless Buck Boost Converter in a Solar PV Battery Driven Electric Vehicle demonstrates efficient power management and utilization. This system ensures continuous operation of the electric vehicle by harnessing solar energy and effectively managing battery storage.
Comments