Abstract — Cuk Converter Design MATLAB
Cuk Converter Design Matlab: Power Electronics, MATLAB/Simulink & Circuit Modeling Integrated Analysis: MATLAB/Simulink · MOSFET/IGBT Gate Drivers · SPWM/SVPWM · THD Spectrum · ~4122 Words Chapter 1: Power Electronics Overview, System Specifications & Topology Modeling The project focused on the design, simulation, and experimental implementation of a DC–DC Iuk converter to investigate its performance under varying input and load conditions. The main goal was to study the behavior of inductor and capacitor currents, evaluate overall efficiency, and measure the Total Harmonic Distortion (THD) of the output. Initially, the converter was modeled and simulated in MATLAB/Simulink and PLECS to understand its dynamic response, voltage inversion characteristics, and energy transfer between components. The open-loop simulation provided insights into switching waveforms, voltage ripples, and current stresses, helping to optimize component values before hardware realization. For the hardware setup, MOSFET gate signals were generated using a Wavect controller interfaced with a custom-designed driver board, fabricated on a PCB using Altium Designer. A Chroma programmable power supply provided a variable input (0–48 V), and an electronic load was employed to test different loading conditions. Input and output voltages and currents were measured using a power analyzer, while switching signals were monitored on an oscilloscope. During testing, minor inconsistencies were observed in the gate pulse pattern, which were corrected by adjusting the controller parameters. After resolving these issues, the system was operated in closed-loop mode to achieve stable, regulated output voltage. The hardware was analyzed for voltage and current waveforms, efficiency under different operating conditions, and THD to evaluate power quality. The experimental results closely aligned with simulation data, confirming the accurate performance of the Iuk converter and demonstrating its suitability for energy conversion applications.
Analytical & State-Space Control Methodology
The project focuses on designing, simulating, and implementing a DC–DC Iuk converter, analyzing waveform characteristics, efficiency, and THD using MATLAB/PLECS simulations, a custom driver board, Wavect pulse generation, power analyzer, and oscilloscope.
Simulink Waveforms & Power Quality Findings
The project focused on the design, simulation, and experimental implementation of a DC–DC Iuk converter to investigate its performance under varying input and load conditions. The main goal was to study the behavior of inductor and capacitor currents, evaluate overall efficiency, and measure the Total Harmonic Distortion (THD) of the output. Initially, the converter was modeled and simulated in MATLAB/Simulink and PLECS to understand its dynamic response, voltage inversion characteristics, and energy transfer between components. The open-loop simulation provided insights into switching waveforms, voltage ripples, and current stresses, helping to optimize component values before hardware realization. For the hardware setup, MOSFET gate signals were generated using a Wavect controller interfaced with a custom-designed driver board, fabricated on a PCB using Altium Designer. A Chroma programmable power supply provided a variable input (0–48 V), and an electronic load was employed to test different loading conditions. Input and output voltages and currents were measured using a power analyzer, while switching signals were monitored on an oscilloscope. During testing, minor inconsistencies were observed in the gate pulse pattern, which were corrected by adjusting the controller parameters. After resolving these issues, the system was operated in closed-loop mode to achieve stable, regulated output voltage. The hardware was analyzed for voltage and current waveforms, efficiency under different operating conditions, and THD to evaluate power quality. The experimental results closely aligned with simulation data, confirming the accurate performance of the Iuk converter and demonstrating its suitability for energy conversion applications.
Scope & Practical Applications
- High-efficiency DC-DC converters and isolated resonant topologies (LLC / DAB)
- Sinusoidal and Space Vector PWM inverters for grid integration & industrial motor drives
- MOSFET / IGBT gate driver optimization with active Miller-clamp shoot-through protection
- Power quality conditioning with Total Harmonic Distortion (THD) strictly compliant with IEEE 519
- Complete Simscape .SLX model files, parameter calculation scripts, and IEEE dissertation reports
Simscape Modeling
Simulink power stage & discrete PWM solver
Semiconductor Loss
SiC MOSFET & IGBT thermal dissipation
SVPWM Control
Vector control, FOC & digital PI loops
IEEE 519 Quality
FFT harmonic spectrum & THD < 5% verification
Gate Driver Protection
Isolated bootstrap & Miller clamp circuits
HIL Prototyping
Ready for dSPACE, OPAL-RT & TI C2000 DSP
Engineering Software & Simulation Toolchains
Modeled using industry-standard power electronics simulation platforms, discrete numerical solvers, and HIL testbeds.
| Software Platform | Analytical Function & Role | Simulation Tier |
|---|---|---|
| MATLAB R2024b | Small-signal state-space averaging, bode stability margins, LC filter design, FFT analysis | Analytical Core |
| Simulink / Simscape | Time-domain switching models, non-linear semiconductor models, discrete PI controllers | System Simulator |
| PLECS / PSIM | High-speed thermal loss estimation (conduction and switching Eon/Eoff), snubber design | Thermal & Losses |
| Altium Designer | High-voltage isolation layout, creepage/clearance, power loop parasitic inductance minimization | Hardware PCB |
| TI C2000 / dSPACE | Embedded C codegen from Simulink, high-resolution ePWM registers, Hardware-in-the-Loop test | HIL Deployment |
Power Conversion & Control Topology Workflow
Systematic integration from DC input energy source and high-frequency gate drive to digital control loops and load delivery.
Renewable Bus
MOSFET/IGBT Bridge
& SVPWM Loop
Filter Stage
& FFT Analyzer
Motor Load
Verified Simulink Block Diagrams & Converter Waveforms
Advantages of the Cuk Converter Design MATLAB Project
Why this project delivers superior academic grades and provides high technical evaluation standing.
High-Fidelity Simscape Modeling
Provides precise numerical simulation of switching events using ODE variable-step solvers without numerical divergence.
Rigorous IEEE 519 Grid Compliance
Guarantees total harmonic distortion (THD) below 5% through optimized LCL filter attenuation and synchronous control loops.
Wide-Bandgap Semiconductor Sizing
Models modern SiC MOSFETs and GaN switches to achieve power conversion efficiencies exceeding 97.5% across full-load regimes.
Advanced Digital Modulation
Implements Space Vector PWM (SVPWM) and sinusoidal modulation maximizing DC-bus utilization by 15.5% over carrier methods.
Dynamic Small-Signal Stability
Custom MATLAB scripts compute control-to-output transfer functions Gvd(s), phase margins (> 50°), and gain margins.
Gate Driver Protection Mechanics
Incorporates active Miller clamps, negative turn-off bias, and isolated bootstrap circuitry to eliminate shoot-through faults.
Hardware-in-the-Loop (HIL) Ready
Directly exportable to embedded C for execution on Texas Instruments C2000 DSPs, dSPACE, and OPAL-RT real-time platforms.
Detailed Magnetic Core Sizing
Features rigorous inductor and high-frequency transformer calculations ensuring core saturation flux margins remain safe.
Direct Electric Vehicle & Grid Value
Builds technical competencies demanded by top automotive EV powertrain developers, solar EPCs, and power electronics consultancies.
Complete Turnkey Package
Delivered with full Simulink .SLX models, MATLAB initialization scripts, calculation sheets, IEEE-format report, and viva defense slides.
Sample MATLAB Code, Scope Waveforms & Harmonic Schedules
Representative excerpts illustrating the state-space analytical derivations, command solver output, and power quality distortion schedules.
[*] Compiling Simscape Electrical Switching Topology Engine... [✓] SiC MOSFET / GaN Switching Semiconductor Characteristics Loaded ──────────────────────────────────────────────────────────────────────── [OUTPUT REGULATION] Steady-State DC Voltage: 24.01 V (Ripple: 0.18 V p-p) [TRANSIENT STEP] 50% to 100% Load Recovery: 0.82 ms (Overshoot: < 1.4%) [SEMICONDUCTOR] Total Switching Loss (Psw): Psw = 4.82 W at 100 kHz [CONVERSION η] Full-Load Power Efficiency: η = 97.42% (Optimal Operating Band) ──────────────────────────────────────────────────────────────────────── [✓] Small-Signal Compensator Verified: Phase Margin = 54.8° (Robust Loop Stability)
[*] Simulating converter steady-state operating envelope across switching cycles...
| Electrical Parameter | Design Objective | Simulink Simulated Metric | Performance Variance | Status |
|---|---|---|---|---|
| Regulated Output Voltage | 24.00 V | 24.01 V | +0.04% | REGULATED |
| Inductor Current Ripple | < 25.0% | 18.4% | -26.4% | OPTIMAL |
| Voltage Peak Ripple | < 240 mV | 180 mV | -25.0% | OPTIMAL |
| Power Conversion Efficiency | > 95.0% | 97.42% | +2.42% | HIGH EFFICIENCY |
[✓] Power Quality Verification Complete: Injected harmonic components conform strictly to IEEE 519 standards.
Frequently Asked Questions
Project Deliverables & Support
Everything needed from project inception to final viva defense — delivered with expert technical support.
.SLX Files
.M Files
Schematics
Report
Slides
Recordings
Sheets
Q&A
Support
Extension