@article{ZahoranskyGeimerDengler,
  author    = {Richard A. Zahoransky and Marcus Geimer and Peter Dengler},
  title     = {Variable Speed Generators with High Fuel Savings},
  series = {Beitr{\"a}ge aus Forschung \& Technik},
  volume    = {2012},
  issn      = {1866-9352},
  url       = {https://nbn-resolving.org/urn:nbn:de:bsz:ofb1-opus-1650},
  pages     = {72 -- 76},
  abstract  = {Auxiliary power units (APUs) are used in mobile applications to supply electrical power in the range of 3 to 10 kW. The state of the art generators are driven by a diesel engine at constant speed. They have a low efficiency (high fuel consumption) as they operate mostly in partial load conditions. A higher efficiency for partial loads is feasible by adjusting the speed of the diesel engine to its optimum efficiency. A frequency converter provides a constant electric frequency at variable speed of the generator. The resulting higher investments for such a variable speed generator (VSG) need a proof of economics, which is demonstrated by this investigation.},
  language  = {en}
}