Patent ID: 6882060
Filing Date: 2005-04-19
Classification: H02P

Abstract:
1. A turbine generating apparatus comprising: (a) a turbine generator including a gas turbine capable of controlling an output thereof by a fuel flow rate and a permanent magnet type synchronous generator connected to said gas turbine, (b) a converter connected to said turbine generator, (c) an inverter connected between said converter and an AC connection system, and (d) a control unit for controlling said turbine generating apparatus so that, during a system connection running mode, a fuel is fed to said gas turbine at a fuel flow rate corresponding to a preset load, said converter prepares a pseudo-system in which a frequency conforms to a set rotational speed of said gas turbine at said preset load, and converts an output of said generator to a direct current in a state that a number of revolutions of said gas turbine is specified by operating said generator synchronously with said pseudo-system, a power to be taken out is controlled depending on a magnitude of a turbine output, and said inverter converts a DC voltage output from said converter to an AC voltage by a pulse width modulation at a system voltage and a system frequency so as to keep said DC voltage output from said converter at a predetermined voltage.