An auxiliary power unit (APU) generator system for an APU can include a doubly-fed induction generator (DFIG) configured to be operatively connected to an APU to be turned by an APU and to have an output frequency that is a function of an excitation frequency and an APU speed. The system can include a generator control module configured to control the excitation frequency to the DFIG to output a substantially constant frequency with changing APU speed to supply the substantially constant frequency to a load.
AUXILIARY POWER UNIT GENERATOR SYSTEMS
2021-11-11
Patent
Elektronische Ressource
Englisch
Auxiliary power unit with combined cooling of generator
Europäisches Patentamt | 2019
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