Patent ID: 8957539
Filing Date: 2015-02-17
Classification: F01D,F02C,F05D

Abstract:
1. A method of operating a hybrid turbogenerator including a gas turbine engine coupled to an electric motor-generator, the method comprising: alternating between a standby mode and a charging mode, wherein during operation in the standby mode, the method further comprises: at least partially closing one or more inlet guide vanes to limit air flow through a compressor and to a turbine of the gas turbine engine; and providing electric power to both a power bus and the electric motor-generator from an energy storage device; and wherein during operation in the charging mode, the method further comprises: at least partially opening the one or more inlet guide vanes to increase air flow through the compressor and to the turbine of the gas turbine engine relative to the standby mode; and providing electric power from the electric motor-generator to both the power bus and the energy storage device.