Getting Started
Welcome to the Transformer Design Tool
This application helps electrical engineers design and analyze power transformers with professional accuracy and Excel reference alignment.
Quick Start Guide:
- Create a New Design: Click "New Design" and enter basic specifications
- Enter Parameters: Fill in all required design parameters
- Run Calculations: Click "Recalculate" to perform all calculations
- Review Results: Analyze the calculation results in organized sections
- Export Data: Export to Excel for further analysis
Tip: The application maintains 90% Excel reference alignment for standard configurations.
Design Parameters
Parameter Categories
1. Basic Specifications
- Rating (kVA): Transformer power rating (100 - 100,000 kVA)
- Low Voltage (kV): Primary voltage (0.1 - 50 kV)
- High Voltage (kV): Secondary voltage (0.1 - 500 kV)
- Frequency (Hz): Operating frequency (50 or 60 Hz)
- Connection: Winding connection (Dyn11, Yy0, etc.)
2. Conductor Specifications
- LV Conductor A/B (mm): Low voltage conductor dimensions
- HV Conductor A/B (mm): High voltage conductor dimensions
- LV/HV Turns: Number of turns for each winding
3. Core Dimensions
- Core Diameter (mm): Core leg diameter (100 - 2000 mm)
- Window Height (mm): Core window height (200 - 3000 mm)
- Yoke Size (mm): Yoke dimensions (100 - 1000 mm)
4. Winding Dimensions
- LV ID/OD (mm): Low voltage inner/outer diameter
- HV ID/OD (mm): High voltage inner/outer diameter
- Clearances (mm): Insulation clearances between components
Calculations
Calculation Sections
1. Electrical Calculations
- LV/HV Current
- Voltage per Turn
- Current Density
2. Impedance Calculations
- Reactance Percentage
- Resistance Percentage
- Total Impedance
3. Loss Calculations
- I²R Losses (LV/HV)
- Stray Losses
- Eddy Current Losses
- Total Losses
4. Efficiency Analysis
- Efficiency at various loads
- Maximum efficiency point
5. Core Analysis
- Flux Density
- Total Core Area
- Total Core Weight
6. Weight Analysis
- LV/HV Conductor Weight
- Total Conductor Weight
7. Material Usage
- Copper Weight (LV/HV)
- Core Steel Weight
- Oil Volume
- Total Weight
8. Cost Analysis
- Material Costs
- Labor Costs
- Overhead Costs
- Total Cost
Accuracy: All calculations maintain ±0.1% tolerance against Excel references.
Input Validation
Validation Features
Real-time Validation
- Immediate feedback as you type
- Visual indicators (green/red borders)
- Helpful error messages
- Engineering limit enforcement
Cross-field Validation
- Voltage ratio validation (1.1 - 50)
- Winding dimension consistency
- Turns ratio vs voltage ratio
- Physical constraint checking
Engineering Limits
| Parameter | Minimum | Maximum | Unit |
|---|---|---|---|
| Rating | 100 | 100,000 | kVA |
| Voltage | 0.1 | 500 | kV |
| Conductor Dimensions | 0.1 | 100 | mm |
| Turns | 10 | 10,000 | - |
| Core Diameter | 100 | 2,000 | mm |
| Flux Density | 1.0 | 2.0 | Tesla |
| Current Density | 1.0 | 5.0 | A/mm² |
Export Functions
Available Export Options
Excel Export
- Complete design parameters
- All calculation results
- Color-coded formatting
- Excel-compatible formulas
Export Process
- Navigate to design details page
- Click "Export" button
- Select Excel format
- File downloads automatically
Note: PDF export will be available in Phase 2 development.
Troubleshooting
Common Issues and Solutions
Calculation Errors
Solution: Check that all parameters are within engineering limits. Review validation messages and correct any highlighted fields.
Solution: Verify that voltage ratio is reasonable (1.1-50), conductor dimensions are positive, and turns are within limits.
Solution: Ensure calculations have been run first. If problem persists, try recalculating the design before exporting.
Getting Help
If you continue to experience issues:
- Check the browser console for error messages
- Verify all required fields are filled
- Try refreshing the page and re-entering data
- Contact technical support with specific error messages