Two-dimensional effects in power take-off region
Abstract
A two-dimensional analytical model of the power take-off (PTO) region of a diagonal conducting wall MHD generator is presented and compared with experimental results. Reasonable agreement was found in both voltage and current distributions from the two-dimensional analysis, while similar comparison of experimental data with one-dimensional calculations with experiments was not satisfactory. Power take-off from mid-channel was also investigated. It was found that larger current was carried by these electrodes. In addition, large circulating current was found in the sidewalls resulting from diagonalization. Therefore ballast resistors are required to equalize the current. A general PTO resistor design was proposed. Trade-off considerations between power output and protection of over-current were made.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1981
- Bibcode:
- 1981STIN...8213367I
- Keywords:
-
- Electric Current;
- Magnetohydrodynamic Generators;
- Mathematical Models;
- Resistors;
- Electric Potential;
- Energy Conversion Efficiency;
- Power Conditioning;
- Two Dimensional Models;
- Electronics and Electrical Engineering