Systems and methods are described for a power aggregation system. In one implementation, a service establishes individual Internet connections to numerous electric resources intermittently connected to the power grid, such as electric vehicles. The Internet connection may be made over the same wire that connects the resource to the power grid. The service optimizes power flows to suit the needs of each resource and each resource owner, while aggregating flows across numerous resources to suit the needs of the power grid. The service can bring vast numbers of electric vehicle batteries online as a new, dynamically aggregated power resource for the power grid. Electric vehicle owners can participate in an electricity trading economy regardless of where they plug into the power grid.

Power aggregation system for distributed electric resources

A turbofan gas turbine propulsion engine includes a multi-speed transmission between the high pressure and low pressure turbines and associated high pressure and low pressure starter-generators. The multi-speed transmission reduces the operating speed range from the low pressure turbine to its associated starter-generator, and is configurable to allow the starter-generator associated with the low pressure turbine to supply starting torque to the engine.

More electric aircraft starter-generator multi-speed transmission system

The placement of fully available prime movers having a DC output at a location inside or adjacent to an inverter-based intermittently available renewable energy site is disclosed. The fully available prime movers add reliability to an unreliable energy asset that is reaching its maximum penetration within the grid due to its unpredictability and the requirement for additional spinning reserves in other parts of the grid. The present invention can provide a portion or all of the power to an intermittently available renewable power generating facility so that the power output to the power grid is dispatchable power. In particular, a method and means are disclosed to utilize high-efficiency engines operated on various fuels some of which may be non-fossil fuels to maintain a constant power output from an otherwise intermittent power generating facility.

Dispatchable power from a renewable energy facility

A method of producing substitute natural gas (SNG) includes providing at least one steam turbine engine. The method also includes providing a gasification system that includes at least one gas shift reactor configured to receive a boiler feedwater stream and a synthesis gas (syngas) stream. The at least one gas shift reactor is further configured to produce a high pressure steam stream. The method further includes producing a steam stream within the at least one gas shift reactor and channeling at least a portion of the steam stream to the at least one steam turbine engine.

Method and apparatus to facilitate substitute natural gas production

A method and apparatus are disclosed for a gas turbine power plant with a variable area turbine nozzle and an integrated motor/alternator device for starting the gas turbine and power extraction after starting.

Multi-spool intercooled recuperated gas turbine

An electrical power generating system is driven by a multi-spool gas turbine engine including at least first and second spools The first spool comprises a turbine and a compressor mounted on a first shaft; the second spool has at least a turbine mounted on a second shaft that is not mechanically coupled to the first shaft A main generator is coupled with one of the spools, and an auxiliary generator/motor is also coupled with one of the spools Speed control of each of the generators is employed for controlling operation of the engine The auxiliary generator/motor can operate in either a generation mode to extract power from its spool or a motor mode to inject power into its spool

Multi-spool turbogenerator system and control method

An electrical power generating system (10) and method wherein a generator (30) is driven by an air-breathing engine (20). At any operating condition, for a given power output the engine efficiency is substantially optimized by controlling the rate of air flow through the engine in such a manner that the fuel/air ratio is controlled to maintain a high peak temperature imparted to the working fluid in the engine. The method and system of the invention eliminate the need for variable-geometry mechanisms in the engine, and also eliminate the need for variable-geometry combustors and pre-burners. The invention is applicable to various types of air-­breathing engines that operate at low fuel/air ratios.

Electrical power generation system and method

FIELD: engines and pumps ^ SUBSTANCE: invention is related to power engineering System is suggested for generation of electric energy with drive from multi-circuit gas turbine engine, which includes at least the first and second cascades The first cascade comprises turbine and compressor installed on the first shaft, the second cascade has at least turbine, which is installed on the second shaft and is not mechanically connected to the first shaft The main generator is connected to one of cascades, and auxiliary generator-engine is also connected to one of cascades In order to control operation of engine, every generator frequency control is applied Auxiliary generator-engine may work either in generation mode, bleeding energy from its cascade, or in engine mode, sending energy to its cascade ^ EFFECT: provides for optimisation of engine efficiency factor by means of air control via engine so that air mixture components ratio is controlled, which helps to maintain high peak temperature sent to working fluid medium in engine ^ 29 cl, 10 dwg

Multi-cascade turbogenerator system and method for its control

FIELD: motors and pumps. ^ SUBSTANCE: system and method for generation of electric power, at that generator is actuated by engine, oxidant of which is air. Under any operational conditions for this output power, engine efficiency is optimised by adjustment of air flow at engine, at that ratio of fuel and air is adjusted to maintain high peak temperature of engine working substance. Invention is applicable to different types of engines, in which oxidant is air, and which operate at low ratio of fuel and air. ^ EFFECT: higher reliability. ^ 20 cl, 3 dwg

Mikhail V. Senkevich

Papers

Multi-spool turbogenerator system and control method

Electrical power generation system and method

Multi-cascade turbogenerator system and method for its control

System and method of electric power generation