Term 3-1 · Electrical Engineering Coursework
Electrical Machines — 900 W Transformer Design
DU, EI, and UI cores were compared for a 220/110 V, 900 W, 300 Hz transformer, leading to the UI-100 calculation case.
900 W transformer requirements
DU, EI, and UI cores were compared for a 220/110 V, 900 W, 300 Hz transformer, leading to the UI-100 calculation case.
- Status
- Independent recalculation
- Evidence
- Source-Derived · Workbook Snapshot · Independent Recalculation
- Contribution
- Team Project · Individual contribution unconfirmed
UI, EI, and DU core calculations
The work sizes turns and conductors from the rating, evaluates copper/core loss, efficiency, regulation, and window utilization, then compares core geometries as a trade study rather than selecting a single best number.
- The fixed brief is 220/110 V, 900 W, 300 Hz, silicon steel, and 1.5 T maximum flux density.
- DU-75, two EI-112 iterations, and UI-100 are compared on common decision axes.
- The final UI-100 case records 180/93 turns, 96.360% efficiency, and 1.136% regulation.
- Workbook cases with different inputs or formula errors are kept separate from the final design evidence.
Winding, loss, and efficiency calculations
Independent recalculation
Candidate calculations
Fabrication, thermal, and insulation tests
No evidence of fabrication, temperature-rise, dielectric, open-circuit, or short-circuit hardware tests was found. This is a calculation-based design. Workbook visuals are rendered cell snapshots, not live Excel screenshots.
Workbook audit and calculation code
Links point to publishable sources, calculations, logs, and detailed provenance.