Aurelia Turbines Oy

Lapeenrannan-Lahden Teknillinen Yliopisto Lut

Lappeenrannan Teknillinen Yliopisto

Jari Backman

Juha Honkatukia

Ahti Jaatinen-Värri

Matti Malkamäki

Juha Pyrhönen

Jaakko Larjola

Ahti Jaatinen-VÄRRI

The present invention is a system, method and computer program for operating a land-or marine-based multi-spool gas turbine system for generating electrical power to supply a load, wherein the system comprises a multi-spool gas turbine engine, and the method comprises controlling the rotational speeds of the at least two generators independently of each other so as to directly control the rotational speeds of the shafts of the spools, the at last two generators being operable to generate electrical current to supply the load, and regulating the amount of heat generated the first heat generating equipment. A computer program to perform the method is also disclosed.

System, method and computer program for operating a land- or marine-based multi-spool gas turbine

The invention concerns land-based gas turbine plants with a two-spool gas turbine arrangement for generating electrical power. The invention comprises two spools. The first spool comprises a first shaft, a first compressor and a first turbine. The second spool comprises at least a second shaft and a second turbine. The shafts of the first and the second spools are independently rotatable of each other. The invention further comprises the first generator and the second generator having nominally substantially equal power ratings, and the rotating parts of the first generator and the second generator have nominally substantially equal rotational speed ratings, and at least 60 percent of a total output power supplied to said load in a form of electrical and rotational power is generated by the two electrical generators.

Controllable two-spool gas turbine arrangement

The invention concerns land-based gas turbine plants with a multi-spool gas turbine arrangement for generating electrical power to supply a load (). The invention comprises at least three spools (-). Each of the at least three spools (-) comprises a shaft (-), a compressor (C-C) and a turbine (T-T). Each one of the shafts (-) of the at least three spools (-) are independently rotatable with respect to each other. The invention further comprises electrical generators (G-G) mounted on each of the shafts (-) of the at least three spools (-), the output power of the generators being independently controllable and at least 60 percent of a total output power supplied to said load () in a form of electrical and rotational power is generated by the at least three generators (G-G) in the form of electrical energy.

Controllable multi-spool gas turbine plant with independent generator speed control and hollow turbine-compressor separator

An electrical turbo-machine includes a stator (), a rotor (), and a turbine section () driven with a working flow containing vaporizable material, for example water, in vaporized form. The rotor includes cooling channels (-) for conducting, through the rotor, a cooling flow containing the vaporizable material in liquid form. The rotor is arranged to conduct the cooling flow through an area where an impeller or impellers (-) of the turbine section are directly connected to the rotor and conduct the cooling flow to a same room to which the working flow comes out from the turbine section. The above-presented cooling system facilitates constructing the electrical turbo-machine as a hermetic structure in a power plant where bearings of the electrical turbo-machine are lubricated by the vaporizable material, a supply pump is directly connected to the rotor, and the vaporizable material in gaseous form fills the gas spaces of the stator.

Growing community of inventors

Lappeenranta, Finland

Jari Backman