High Gain DC-DC Converter with ASLC Network for PV Application in MATLAB
 
This MATLAB/Simulink model presents a high-gain DC-DC converter using an Active Switched LC network for PV application. The converter is connected with a PV array and tested under variable irradiance conditions to analyze voltage, current, and power performance.
 
The model compares four MPPT techniques:
 
Perturb and Observe MPPT
Modified Perturb and Observe MPPT
Incremental Conductance MPPT
Modified Incremental Conductance MPPT
 
The converter is designed to boost the PV voltage from around 30.7 V to nearly 300 V with a high voltage gain ratio. The simulation helps to understand how different MPPT algorithms track maximum power under changing irradiance conditions.
 
Specification:
 
Software: MATLAB/Simulink
System Type: PV-fed high-gain DC-DC converter
Converter Type: High-gain DC-DC converter with Active Switched LC network
PV Array Rating: 250 W
PV Maximum Power Voltage: 30.7 V
PV Maximum Power Current: 8.15 A
Designed Voltage Gain: Approximately 1:10
Converter Output Voltage: Around 300 V at standard irradiance condition
Maximum Gain Capability: Up to 12 times
Irradiance Conditions: 1000 W/m², 800 W/m², 600 W/m², and 400 W/m²
Temperature Condition: 25°C
MPPT Methods Used: P&O, Modified P&O, Incremental Conductance, and Modified Incremental Conductance
Control Output: Duty cycle generation
Switching Control: PWM-based switching control
Output Results: PV voltage, PV current, PV power, converter voltage, converter current, and converter power
 
Operation:
 
The PV array generates DC power based on the available irradiance. The PV voltage and current are measured and given to the MPPT controller. Based on the selected MPPT algorithm, the controller calculates the duty cycle required to extract maximum power from the PV array.
 
The duty cycle is then processed through the PWM generator. The PWM pulses control the switches of the high-gain DC-DC converter. The converter boosts the low PV voltage to a higher DC output voltage.
 
During simulation, the irradiance is changed from 1000 W/m² to 800 W/m², 600 W/m², and 400 W/m². Under each irradiance condition, the PV current and power vary according to solar input, while the converter maintains boosted output voltage operation.
 
The modified P&O and modified Incremental Conductance methods use an additional power-change factor to improve the tracking response. These modified methods reach the maximum power point faster than the conventional methods.
 
Use Cases:
 
Suitable for PV-based high-gain DC-DC converter analysis
Useful for comparing conventional and modified MPPT techniques
Suitable for renewable energy MATLAB/Simulink project work
Helpful for understanding PV voltage boosting from low voltage to high DC voltage
Useful for solar PV power conversion studies
Suitable for research on Active Switched LC converter topology
Helpful for EV-related DC power conversion studies using PV source
Useful for analyzing PV power tracking under variable irradiance
Suitable for academic projects, research demonstrations, and simulation-based product development
Helpful for studying converter output voltage, current, and power response under different MPPT methods