Standalone Solar PV fed induction motor for Water Pumping Application in MATLAB 
 
This advanced MATLAB/Simulink model demonstrates the complete operation of a Standalone Solar PV–Fed Induction Motor Water Pumping System powered by the Incremental Conductance (INC) MPPT technique. The system is designed to show how solar energy can reliably drive a centrifugal water pump under varying irradiance conditions while maintaining high efficiency and stable motor performance.
 
The model integrates:
 
High-capacity PV array modeled using real module parameters
Boost converter with INC MPPT for optimal power extraction
Three-level NPC inverter for superior AC quality
PID-based V/f speed control for the induction motor
Dynamic analysis under constant, reduced, and step-changing irradiance
This setup is ideal for M.Tech/PhD students, renewable energy engineers, irrigation system designers, and researchers working on solar-powered drives or standalone microgrid applications.
 
🔧 Key Features
 
✔️ Complete Solar Water Pumping Architecture
 
5.8 kW PV array (7S × 2P configuration)
Boost converter raising PV voltage to 1000 V
INC MPPT controller for real-time MPP tracking
5 kW three-phase induction motor
Centrifugal pump torque modeling
 
✔️ High-Efficiency Inverter & Motor Drive
 
Three-level NPC inverter with reduced THD
LC output filter + transformer
PID-based V/f control for stable motor speed
Accurate representation of pump torque ∝ ω²
 
✔️ MPPT & Power Control Features
 
INC MPPT compares dI/dV and –I/V for precise tracking
Fast tracking under rising/falling irradiance
Smooth duty-cycle control of the boost converter
Stable DC-link voltage during dynamic conditions
 
✔️ Dynamic Irradiance Simulation
 
Includes three irradiance scenarios:
 
Scenario A – Full Sun (1000 W/m²)
PV power ≈ 5.5 kW
Motor reaches ≈ 1500 rpm
Pump operates at maximum discharge
 
Scenario B – Reduced Sunlight (800 W/m²)
PV power ≈ 4.0 kW
Motor drops to ≈ 1200 rpm
System remains stable and efficient
 
Scenario C – Step Change (1000 → 800 W/m² at t = 3 s)
Quick torque adaptation
Smooth speed transition
Minimal overshoot with PID control
 
📊 What’s Included in the Simulation
PV array with real module specifications
Boost converter + INC MPPT block
NPC inverter with harmonic filter
Induction motor + centrifugal pump load
PID-based V/f control subsystem
Dynamic irradiance profile
Waveforms for:
PV voltage/current/power
Duty cycle
DC link voltage
Motor speed & torque
Inverter frequency
Pumping performance
🎯 Performance Highlights
 
🔹 PV & MPPT Performance
INC MPPT ensures precise MPP tracking
Stable voltage and current even during transitions
No oscillatory behavior, high tracking efficiency
 
🔹 Motor & Pump Performance
Motor smoothly follows reference frequency
Load torque rises proportionally to speed²
Stable operation across all irradiance levels
 
🔹 Inverter Quality
NPC inverter reduces harmonic distortion
Clean sinusoidal output via filter
Balanced three-phase AC for motor drive
 
🔹 Dynamic Stability
Quick stabilization during irradiance drop
PID controller minimizes overshoot
DC-link voltage remains well regulated
 
📁 What You Get
✔️ Complete MATLAB/Simulink model (.slx)
✔️ Fully built PV, MPPT, inverter, and motor subsystems
✔️ INC MPPT + PID-based V/f controller
 
▶️ Video Demonstration
Watch the complete simulation demo:
🔗 https://www.youtube.com/watch?v=CwsaFhvYOLI