SEPIC-Derived Semi-Bridgeless PFC Converter for Battery Charging Applications MATLAB Simulink & Simscape Simulation
Investigate input-current shaping, capacitor/inductor stress and controlled DC output in a semi-bridgeless SEPIC-derived battery charger. This video-first project page describes what to inspect in the demonstration and which modelling checks would support a reproducible technical report.
Watch the simulation or tutorial: Investigate input-current shaping, capacitor/inductor stress and controlled DC output in a semi-bridgeless SEPIC-derived battery charger.
What this SEPIC PFC Battery Charger demonstration investigates
A semi-bridgeless topology may reduce bridge conduction paths, but practical efficiency depends on conduction losses, gate drive, magnetic losses and current control.
Investigate input-current shaping, capacitor/inductor stress and controlled DC output in a semi-bridgeless SEPIC-derived battery charger.
Modelling environment
MATLAB Simulink & Simscape
Specific research category
SEPIC PFC Battery Charger
Publication context
Simulation walkthrough and methodology discussion; verify reported plots against the original model files.
Model architecture and components
- single-phase AC source with input impedance
- semi-bridgeless SEPIC-derived switch and diode stages
- coupling capacitor, magnetic components and loss model
- voltage and current feedback for controlled battery charging
Recommended simulation methodology
- Define input voltage, line frequency, switching frequency and target output charging range.
- Size magnetic and coupling components for ripple and voltage stress, stating operating mode.
- Tune current shaping and output voltage or battery-current loops with current limits.
- Compare power factor, input THD, efficiency and device stress with a conventional front-end baseline.
Scopes, plots and evidence to validate
- AC input voltage and current phase
- power factor and line-current THD
- battery voltage, charging current and DC ripple
- switch/diode voltage-current stress
- inductor current and estimated converter losses
Research novelty and interpretation
Report line-current quality together with realistic component stress and loss, rather than relying on an idealized power-factor claim.
When comparing control or modelling strategies, keep plant parameters, external disturbances and measurement windows identical. Any gain, loss or accuracy figure should be derived from the recorded simulation or measurement, not inferred from the project title.
Related technical article
For modelling assumptions, experiment design and thesis-ready comparison criteria, read the research guide.
Read Design and Validation of a SEPIC-Derived Semi-Bridgeless PFC ChargerQuestions research scholars should consider
What distinguishes this project from a generic simulation?
Report line-current quality together with realistic component stress and loss, rather than relying on an idealized power-factor claim.
Which plots should be included in the results section?
At minimum, report AC input voltage and current phase, power factor and line-current THD and battery voltage, charging current and DC ripple. Include baseline and sensitivity cases where applicable.
How should I verify the implementation?
Document model versions, initialization, numerical settings, units, boundary conditions and controlled comparisons. Treat any interpretation as provisional until plots and source models have been checked.
Engineering research and thesis support worldwide
Researchers in the UK, Australia, Germany, Canada, Singapore and USA can use this technical guide to define reproducible simulation objectives, benchmark cases, plots and a transparent methodology. Work should follow the academic integrity and AI-use policies of the relevant university.