Ⅰ. Core Challenges and Innovation Approach
Traditional transformers are constrained by structural redundancy, material performance bottlenecks, and insufficient process precision, failing to meet demands in specialized scenarios (e.g., space-constrained, high short-circuit risk, harsh environments). This solution achieves performance leaps and scenario adaptability through 3D structural optimization, cutting-edge material upgrades, and precision process innovations.
II. Key Solution Highlights
(1) Structural Innovation: Modularity and Enhanced Functionality
1. Shell-Type Structure
Applications: Urban underground substations, offshore wind power step-up transformers, compact data centers
Advantages:
Uniform magnetic flux distribution, short-circuit withstand capacity ↑30%–40%
20% smaller volume than core-type structures, ideal for height-limited spaces
2. Foil Winding Technology
Applicable Types: Distribution transformers, rectifier transformers, mining-specific transformers
Innovative Value:
Axial heat dissipation area ↑50%, temperature rise ↓15–20K
Evenly distributed short-circuit electrodynamic forces, withstand capacity ↑25%
3. Split Winding/Phase-Shifting Winding
Core Functions:
18-pulse/24-pulse phase-shifting design suppresses 5/7/11th harmonics, THD <3%
Multi-channel isolated output (e.g., electroplating power supplies), voltage deviation ≤0.5%
4. Compact Modular Design
Process Integration:
Split tank + on-site argon arc welding sealing
Transport unit weight <80 tons, suitable for mountainous/island terrains
(2) Material Innovation: Performance and Sustainability Breakthroughs
Material Category
Innovative Application
Performance Advantages
New Insulation
Nomex® paper + DDP film composite system
Class H heat resistance (180°C) · Dielectric strength ↑20%
Eco-Cooling Medium
Natural ester (FR3™)/Fluorinated fluid (Novec™)
Ignition point >300°C · Biodegradability >98%
Lightweight Structure
High-strength Al alloy (Series 6) for tanks
Weight ↓30% · Corrosion-resistant lifespan +15 years
Typical Scenarios:
• Fluorinated fluid cooling: Data center immersion transformers (Fire Class F0)
• Natural ester oil: Subway tunnel transformers (zero toxic leakage risk)
(3) Process Innovation: Precision Manufacturing and Lifecycle Assurance
1. Vacuum Pressure Impregnation (VPI)
Deep epoxy resin penetration (vacuum level <50Pa)
Insulation layer porosity ≈0, partial discharge <5pC
2. Step-Lap Core Stacking
45° mitered joints laser-aligned, gap <0.1mm
Results: No-load loss ↓10%–15%, noise ≤55dB(A)
3. High-Precision Welding
Laser/robotic automated welding
Weld strength consistency >99% Leakage rate <0.1%
4. Digital Pre-Integration
Built-in fiber-optic temperature (DGA) + vibration sensor interfaces
Enables real-time health assessment via digital twin systems
III. Target Achievements
Dimension
Traditional Solution
This Solution
Space Efficiency
Bulky volume
Footprint ↓25%–40%
Short-Circuit Withstand
25kA/2s
35kA/3s withstand
Eco-Friendliness
Mineral oil (pollution risk)
100% biodegradable · Carbon footprint ↓60%
Lifecycle Cost
High maintenance
Predictive maintenance · Failure rate↓45%
Extreme Environment
-40℃~+40℃
Stable operation at -50℃~+65℃
IV. Application Scenario Validation
Renewable Energy Plants: Shell-type + split winding design → Resolves harmonic disturbances and frequent short-circuit impacts.
Underground Smart Substations: Fluorinated fluid cooling + compact modularity → Zero fire risk · Maintenance-free for >10 years.
Offshore Wind Platforms: Lightweight Al alloy + step-lap stacking → Salt mist corrosion resistance · No-load loss <0.15%.
