Three-Phase AC/DC Boost PFC (DQ control & DSOGI PLL) Hardware-in-the-Loop (DiY) with STM32F7 & Spartan-7 (Cmod S7)

⚡ Three-Phase Boost PFC (DQ control & DSOGI PLL)

The MIL (Model in the loop) simulation pfc_desktop.slx contains both a linear model of the FETs (FPGA/HIL implementation which could be use upto 8Arms AC) and a nonlinear model for more fidelity. The Simulink model HDL_pfc_gold_fi_og.slx is for the VHDL code gen that is produce for a CLK of 98MHz. The Vivado Project contains all IPs (PFC, DAC driver etc.) The Model pfc_control.slx is use for MIL & PIL & code generated directly to the SMT32F7 which is also one thing I was always looking to find on the internet but never could.

Hope you enjoy.

• Blue: VDC
• Green: IAC1

• Starting the controller VDC increases and the amplitud of IAC

- Load dump from IDC = 8A to 0A - Load increase from IDC = 0A to 8A

📦 Project Structure

HIL-3Phase-PFC
├── stf7
│   ├── stf7
│      ├── main.c (All code and binaries)
│      └── 3ph.elf
│   ├── matlab
│        ├──*.slx (All Simulink & Matlab files for the STM32F7)
│       
├── matlab
│    ├── sim
│        ├── *.slx (All Simulink files for the Spartan7)
├── vivado_lite
│    ├── All vivado files for the project
├── ips
│    ├── All vivado IPs for the project
└── README.md

---

⚙️ System Overview

• Application: Digital control of a 3-phase PFC converter in real time using PLL Dsogi.
• Controller: STM32F767ZI (ARM Cortex-M7 @ 216MHz)
• FPGA: Xilinx Spartan-7
• Mode: Hardware-in-the-Loop with real-time plant emulation in FPGA

---

🔌 Key Features

• Real-time HIL simulation of a 3-phase AC/DC PFC stage DACs MCP4922.
• FPGA-based fast plant model (fixed-step solver at 110MHz rate), FETs were linearize.
• Digital control loop implementation on STM32F7 @8Khz (which is ok for a S7) (PID, PLL Dsogi).
• MATLAB/Simulink/Simscape model for validation using PiL, MiL.
• Scalable for DSP or other FPGA platforms.

---

🧠 Technical Highlights

Component	Function
Spartan-7 FPGA	Emulates PFC power stage dynamics in real time
STM32F7 MCU	Executes control algorithms (current, voltage regulation)
MATLAB/Simulink	Design, test, and compare control loops and plant models

---

---

🚀 Getting Started

✅ Prerequisites

• STM32CubeIDE 1.15+
• Vivado 2022.1 or later
• MATLAB R2022b
• STM32F767ZI Nucleo or custom board
• Spartan-7 FPGA board (e.g., Digilent Cmod S7 or custom design)

🧪 Quick Test

1. Flash the STM32 with pfc3van.elf/
2. Load bitstream to FPGA from design_1_wrapper.bin/
3. Run host-side script or GUI to initiate control loop test
4. Observe performance via scope

---

🧰 Tools Used

• STM32CubeMX / STM32CubeIDE – Microcontroller development
• Xilinx Vivado – FPGA synthesis and implementation
• MATLAB/Simulink/Simscape – Plant and control modeling

---

📈 Future Work

• CAN/EtherCAT interface for industrial integration
• Adaptive control algorithms
• Integration with real-time OS (FreeRTOS)
• PWM jitter analysis and suppression
• Fully parameterized VHDL generator from Simulink

---

🤝 Contributions

Contributions, bug reports, and feature requests are welcome.
Please open an Issue or submit a Pull Request.

---

📄 License

This project is licensed under the MIT License. See the LICENSE file for details.

---

📫 Contact

• Lead Developer: Angel Rodriguez
• Email: [email protected] Subject: HIL PFC 3PH

---

⚠️ This project is for research and development purposes. Not certified for use in safety-critical or production energy systems.