Electric turbo compound configuration for an engine/electric generator system

Claim 2

An engine/electric generator system, comprising: an internal combustion engine; a primary electric generator driven by an output shaft of the engine and providing electrical power; a turbocharger having a first turbine driven by exhaust gasses from the engine and a compressor driven by the first turbine and providing inlet air to the engine; a secondary turbine; an exhaust line communicating exhaust gas from the first turbine to an input of the secondary turbine; a secondary electric generator driven by the secondary turbine; and electric power combining circuit for combining electric power from the primary electric generator and the secondary electric generator, and delivering combined electric power to a transmission line; and an exhaust gas recirculation line communicating an output of the first turbine to an input of the compressor.

Claim 3

The engine/electric generator system of claim 1 , further comprising: a valve in the exhaust gas recirculation line controlling flow of gasses therethrough.

Claim 4

An engine/electric generator system, comprising: an internal combustion engine; a primary electric generator driven by an output shaft of the engine and providing electrical power; a turbocharger having a first turbine driven by exhaust gasses from the engine and a compressor driven by the first turbine and providing inlet air to the engine; a secondary turbine; an exhaust line communicating exhaust gas from the first turbine to an input of the secondary turbine; a secondary electric generator driven by the secondary turbine; and electric power combining circuit for combining electric power from the primary electric generator and the secondary electric generator, and delivering combined electric power to a transmission line; and a waste gate line communicating the exhaust line to an output of the secondary turbine.

Claim 5

An engine/electric generator system, comprising: an internal combustion engine; a primary electric generator driven by an output shaft of the engine and providing electrical power; a turbocharger having a first turbine driven by exhaust gasses from the engine and a compressor driven by the first turbine and providing inlet air to the engine; a secondary turbine; an exhaust line communicating exhaust gas from the first turbine to an input of the secondary turbine; a secondary electric generator driven by the secondary turbine; and electric power combining circuit for combining electric power from the primary electric generator and the secondary electric generator, and delivering combined electric power to a transmission line; and a waste gate line communicating the exhaust line to an output of the secondary turbine.

Claim 6

The engine/electric generator system of claim 3 , further comprising: a valve in the waste gate line for controlling flow of gasses therethrough.

Claim 7

An engine/electric generator system, comprising: an internal combustion engine; a primary electric generator driven by an output shaft of the engine and providing electrical power; a turbocharger having a first turbine driven by exhaust gasses from the engine and a compressor driven by the first turbine and providing inlet air to the engine; a secondary turbine; an exhaust line communicating exhaust gas from the first turbine to an input of the secondary turbine; a secondary electric generator driven by the secondary turbine, the secondary generator comprising a high speed alternator which generates AC electrical power; and electric power combining circuit for combining electric power from the primary electric generator and the secondary electric generator, and delivering combined electric power to a transmission line, the electric power combining circuit comprising a primary rectifier which receives AC electric power from the primary generator, a secondary rectifier which receives AC electric power from the alternator, a DC bus which receives DC power from the primary and secondary rectifiers, and an AC inverter which receives DC electrical power from the DC bus and which provides AC electric power to the transmission line.

Claim 8

An engine/electric generator system, comprising: an internal combustion engine; a primary electric generator driven by an output shaft of the engine and providing electrical power; a turbocharger having a first turbine driven by exhaust gasses from the engine and a compressor driven by the first turbine and providing inlet air to the engine; a secondary turbine; an exhaust line communicating exhaust gas from the first turbine to an input of the secondary turbine; a secondary electric generator driven by the secondary turbine, the secondary generator comprising a high speed alternator which generates AC electrical power; and electric power combining circuit for combining electric power from the primary electric generator and the secondary electric generator, and delivering combined electric power to a transmission line, the electric power combining circuit comprising a primary rectifier which receives AC electric power from the primary generator, a secondary rectifier which receives AC electric power from the alternator, a DC bus which receives DC power from the primary and secondary rectifiers, and an AC inverter which receives DC electrical power from the DC bus and which provides AC electric power to the transmission line.

Claim 9

The engine/electric generator system of claim 5 , wherein: the primary electric generator provides electrical power to the transmission line; and the electric power combining circuit comprises a rectifier/AC inverter receiving electric power from the secondary electric generator, and delivering electric power to the transmission line.

Claim 10

The engine/electric generator system of claim 5 , wherein: the secondary electric generator comprises a high speed alternator.

Claim 11

An engine/electric generator system, comprising: an internal combustion engine; a primary electric generator driven by an output shaft of the engine and providing electrical power; a primary rectifier receiving AC electric power from the primary generator; a turbocharger having a first turbine driven by exhaust gasses from the engine and a compressor driven by the first turbine and providing inlet air to the engine; a secondary turbine; an exhaust line communicating exhaust gas from the first turbine to an input of the secondary turbine; a high speed alternator driven by the secondary turbine, the alternator generating AC electrical power; a secondary rectifier receiving AC electric power from the alternator; a DC bus receiving and combining DC power from the primary and secondary rectifiers; and an AC inverter receiving DC electrical power from the DC bus and providing AC electric power to a transmission line.

Claim 12

An engine/electric generator system, comprising: an internal combustion engine; a primary electric generator driven by an output shaft of the engine and providing electrical power; a primary rectifier receiving AC electric power from the primary generator; a turbocharger having a first turbine driven by exhaust gasses from the engine and a compressor driven by the first turbine and providing inlet air to the engine; a secondary turbine; an exhaust line communicating exhaust gas from the first turbine to an input of the secondary turbine; a high speed alternator driven by the secondary turbine, the alternator generating AC electrical power; a secondary rectifier receiving AC electric power from the alternator; a DC bus receiving and combining DC power from the primary and secondary rectifiers; and an AC inverter receiving DC electrical power from the DC bus and providing AC electric power to a transmission line.