Shaft-generator available electrical power given main-engine load and PTO design capacity - enables one-generator-at-sea config on slow-steaming.
Formula
$$ P_{PTO} = \min(P_{rated},\ P_{ME} \cdot r_{res}) \cdot \eta_{PTO} $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $P_{rated}$ | PTO rated capacity | MW | maker data |
| $P_{ME}$ | Main-engine output | MW | engine performance |
| $r_{res}$ | Propulsion reserve factor | - | operating policy |
| $\eta_{PTO}$ | PTO efficiency | - | maker curve |
Sources
- MAN ES PTO/PTH/PTI Project Guide.