PV Powered EV Charging with Grid Integration in MATLAB | MPPT + Bidirectional Converter + NPC Inverter
 
This MATLAB/Simulink model demonstrates a complete PV-based EV charging system with grid integration, featuring MPPT-controlled PV generation, a bidirectional EV battery converter, and a three-level NPC grid interface. The system intelligently switches between battery charging, idle, and grid export modes based on the EV battery SOC and PV availability.
 
 
☀️🔌 Product Description
 
This premium simulation model presents an advanced PV-driven EV charging station capable of operating in:
 
Mode 1 – Battery Charging: PV → EV battery (when SOC < 90–95%)
Mode 2 – Grid Export: PV → Grid (when SOC > 95%)
Grid-to-Vehicle (G2V): Grid → EV battery when PV is unavailable
 
The system is designed using:
 
24.94 kW solar array
Boost converter with P&O MPPT
Bidirectional EV battery converter
Three-level NPC inverter for grid interface
dq0 feed-forward decoupled current control
 
This model is ideal for researchers working on EV charging, grid-tied PV systems, smart energy management projects.
 
🔧 Key Features
 
✔️ Complete PV–EV–Grid Architecture
24.94 kW PV array
DC bus regulated at 470 V
EV battery subsystem rated for 25 kW
Three-level NPC inverter + PCC transformer
Harmonic filter for grid-compliant current injection
 
✔️ Advanced Control Strategy
 
P&O MPPT for maximizing PV power
PI-based DC bus voltage controller for bidirectional EV converter
dq0-based inverter current control for grid synchronization
Feed-forward decoupling for fast dynamic response
Stateflow mode selection based on SOC and PV availability
 
✔️ Two Main Operating Modes
 
1. PV → Battery (SOC < 90–95%)
Entire PV output charges the EV battery
Grid remains idle
Stable DC bus at 470 V
2. PV → Grid (SOC > 95%)
PV power delivered to grid
Battery disconnected (idle mode)
Sinusoidal PCC voltage & current (in-phase)
 
📊 System Ratings (Summary)
 
Component
Rating / Value
Control Strategy
PV Array
24.94 kW (445 W × 56 modules)
P&O MPPT + Boost Converter
EV Battery
25 kW
Bidirectional Converter + PI
DC Bus
470 V
PI Voltage Control
Grid
154 MW @ 34.5 kV → 400 V PCC
NPC Inverter (dq0 control)
Irradiance
1000 W/m²
Constant (baseline test)
Temperature
25 °C
Constant
 
🧪 Simulation Results
 
Case 1 – Battery Charging (SOC = 50%)
PV produces ~20 kW
Battery absorbs full 20 kW (negative battery power)
Grid power = 0 kW (no export/import)
DC bus maintains 470 V with tight regulation
PCC current = zero (no grid involvement)
 
Case 2 – Grid Export (SOC = 98%)
PV power exported entirely to the grid (~20 kW)
Battery idle (no current)
Grid current perfectly sinusoidal and in-phase with voltage
Confirms active power injection to utility grid
 
Performance Summary
 
Case
SOC
PV Power
Battery Power
Grid Power
Mode
1
50%
20 kW
–20 kW (charging)
0 kW
PV → Battery
2
98%
20 kW
0 kW
+20 kW
PV → Grid
 
🎯 Key Advantages
 
Ensures maximum PV utilization via MPPT
Maintains perfect voltage stability on DC bus
Seamless SOC-based mode switching with no overshoot
High power quality: sinusoidal grid waveform
Ideal reference model for EV smart-charging research
 
📁 What You Get
✔️ Complete MATLAB/Simulink model (.slx)
✔️ All controllers (MPPT, PI, dq0 current control)
✔️ Stateflow-based mode switching logic
 
▶️ Demo Video
Watch the full simulation:
🔗 https://www.youtube.com/watch?v=hc-KtMG-PAc