All projects
05 / May 2023/ Research project with Akshitha, University of New Haven
EV Powertrain Boost Converter with Adaptive Sliding Mode Control
A fuel cell's output voltage swings with load and temperature, but a fuel cell hybrid vehicle's bus needs a steady 36 V.
- Role
- Converter design, controller design and stability proof, with Akshitha. Design and simulation study, not a built converter.
- Stack
- MATLAB, Simulink, Stateflow, Control theory
- Context
- Research project with Akshitha, University of New Haven
01
What I built
- 01A nonlinear DC-DC boost converter for a fuel cell hybrid electric vehicle powertrain.
- 02An Adaptive Sliding Mode Controller with a Lyapunov stability proof for zero steady-state error.
- 03Supervisory logic as Stateflow state machines with automatic code generation.
02
Hardware
- 01Boost topology, simulated
- 02L = 383 uH, C = 257 uF, R = 13 ohm
03
Software
- 01MATLAB / Simulink
- 02Stateflow with autocode
- 03Small-signal and Bode analysis
04
Validation
- 01Lyapunov candidate V = s^2 / 2 with negative-definite derivative, proving convergence to the sliding surface.
- 02Verification campaign across the full 1 to 100 W load range, confirmed by Bode analysis.
05
Results
- 01Stable 36 V regulation across the load range in simulation.
- 02Co-authored research paper.
06
Characteristics
| Parameter | Value |
|---|---|
| Input voltage | 12 to 18 V |
| Output voltage | 36 V |
| Power range | 1 to 100 W |
| Switching frequency | 30 kHz |
| Inductor / capacitor | 383 uH / 257 uF |
| Phase margin | 45 deg |
| Gain crossover | 10 kHz |
| Current ripple | < 5% |
| Voltage ripple | < 0.5% |
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