Optimal Design of High-Power Density Medium-Voltage Direct Current Bipolar Power Cables for Lunar Power Transmission
Abstract
:1. Introduction
2. Challenges Related to the Lunar Environment
2.1. The Lunar Environment
2.2. Specifications of Power Lines
3. Model and Design
3.1. Coupled Electrothermal Model
3.2. Proposed Insulation Designs
4. Simulation Results
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Parameter | (K) | (mm/kV) | (S/m) |
---|---|---|---|
ETFE | 4061 | 0.03097 | 2.027 × 10−10 |
PI | 3319 | 0.05558 | 1.677 × 10−9 |
Material | Density (kg·m−3) | Thermal Conductivity (W·m−1·K−1) | Dielectric Constant | Dielectric Strength (V·m−1) |
---|---|---|---|---|
Aluminum | 2705 | 237 | - | - |
Copper | 8960 | 400 | - | - |
Kapton® MT+ (500 MT+) | 1420 | 0.75 | 4.2 | 114.173 × 106 |
Teflon® PFA | 2150 | 0.195 | 2 | 256 × 106 |
XLPE | 930 | 0.46 | 2.5 | - |
NL-EPR | 860 | 0.3 | 2.5 | - |
Semiconducting layer | 1055 | 10 | - | - |
PVC | 1350 | 0.19 | - | - |
Moon’s Soil | - | 0.010 | - | - |
Power Level (kW) | Core Conductor Material | Radius of the Core Conductor (mm) | Thickness of the Inner Insulator (mm) | Thickness of the Outer Conductor (mm) | Thickness of the Outer Insulator (mm) | Overall Radius of the Cable (mm) |
---|---|---|---|---|---|---|
200 | Al | 1.68 | 0.48 | 0.5764 | 0.225 | 6.38 |
Cu | 1.32 | 0.50 | 0.4283 | 0.225 | 5.40 | |
1000 | Al | 6.95 | 0.46 | 2.7495 | 0.225 | 10.61 |
Cu | 5.52 | 0.46 | 2.158 | 0.225 | 8.59 | |
2000 | Al | 12.5 | 0.45 | 5.0485 | 0.225 | 18.45 |
Cu | 9.96 | 0.45 | 3.9975 | 0.225 | 14.86 |
Power Level (kW) | Core Conductor Material | Radius of the Core Conductor (mm) | Thickness of the Inner Insulator (mm) | Thickness of the Outer Conductor (mm) | Thickness of the Outer Insulator (mm) | Overall Radius of the Cable (mm) |
---|---|---|---|---|---|---|
200 | Al | 0.86 | 1.14 | 0.1771 | 0.48 | 2.89 |
Cu | 0.66 | 1.2 | 0.1137 | 0.48 | 2.68 | |
1000 | Al | 3.76 | 0.94 | 1.319 | 0.45 | 6.70 |
Cu | 2.96 | 0.94 | 0.9961 | 0.45 | 5.57 | |
2000 | Al | 6.91 | 0.93 | 2.6105 | 0.45 | 11.13 |
Cu | 5.46 | 0.93 | 2.015 | 0.45 | 9.08 |
Cable Type | Core Conductor Material | Radius of the Core Conductor (mm) | Overall Radius of the Cable (mm) | Weight per Unit Length for 2 Poles (kg/m) | Total Cross-Sectional Area (mm2) |
---|---|---|---|---|---|
NL-EPR 5 kV Cable | Cu | 10.65 | 16.6825 | 7.7157 | 1748.6 |
Designed Coaxial Cable | Cu | 9.96 | 14.861 | 5.7802 | 693.81 |
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Saha, A.; Ghassemi, M. Optimal Design of High-Power Density Medium-Voltage Direct Current Bipolar Power Cables for Lunar Power Transmission. Aerospace 2024, 11, 685. https://doi.org/10.3390/aerospace11080685
Saha A, Ghassemi M. Optimal Design of High-Power Density Medium-Voltage Direct Current Bipolar Power Cables for Lunar Power Transmission. Aerospace. 2024; 11(8):685. https://doi.org/10.3390/aerospace11080685
Chicago/Turabian StyleSaha, Anoy, and Mona Ghassemi. 2024. "Optimal Design of High-Power Density Medium-Voltage Direct Current Bipolar Power Cables for Lunar Power Transmission" Aerospace 11, no. 8: 685. https://doi.org/10.3390/aerospace11080685