Patent ID: 7327113
Filing Date: 2008-02-05
Classification: H02M

Abstract:
1. An electric starter generator (ESG) system configured to supply mechanical power to a turbine during a starting operation and configured to transform mechanical power from the turbine to electrical power during a generating operation, said ESG system comprising: a synchronous starter generator mechanically coupled to the turbine and configured to supply an alternating current (AC) voltage; an inverter/rectifier electrically connected to said synchronous starter generator and configured to convert the AC voltage to a DC voltage; and a bidirectional buck-boost power converter configured to perform each of a plurality of operations: step up the output voltage during transient operations, step down the output voltage during transient operations, step up the output voltage during steady state operations, and step down the output voltage during steady state operations, such that a DC bus voltage is maintained substantially constant during both steady state and transient operations solely via the bidirectional buck-boost power converter and one or more DC bus link filters.