Abstract: A microturbine power generation system includes an electric generator, a rectifier for rectifying an output of the electric generator, and an inverter for up-chopping an output of the rectifier. The inverter can also be controlled to provide an excitation current to windings of the electric generator. The excitation current causes the electric generator to operate as a motor. The electric generator can be operated as a starter motor for the system.

Abstract: An auxiliary motor drive system including a driving device and an auxiliary motor. The driving device is powered by the engine of a motor vehicle and in turn drives the auxiliary motor. The auxiliary motor in turn drives the drive shaft of the motor vehicle, thus allowing the engine power output to be applied to the vehicle drive shaft while bypassing the vehicle's transmission. The driving device can be a hydraulic pump, a compressor, or an electric generator, while the auxiliary motor is a hydraulic motor, a pneumatic motor, or an electric motor respectively.

Abstract: A system and controller for providing emergency power to an electrical load when a usual source of power for the load has failed, includes an electrical dynamo, an engine of controllable speed connectable by clutch to drive by a fixed speed ratio the dynamo, a continuously spinning flywheel to provide power while the engine is coming up to speed and during transient loads thereafter, and a control system. The flywheel is also connected with the dynamo, through a variable-speed transmission. When the engine is driving the dynamo, the speed of the engine is controlled by a loop, which involves sensing the torque of the flywheel, comparing the flywheel's speed with a first reference, and adjusting the throttle according to the difference.

Abstract: An auxiliary power system comprises two turbogenerators sharing a single combustor for delivery of elevated pressure and temperature gas to both the turbogenerators, a single fuel system for supplying elevated pressure fuel to the single combustor, and a single electronic unit for conditioning the electrical power input and output. The auxiliary power system also comprises first and second recuperator means operating in association with the dual turbogenerators for transferring heat from turbine exhaust to air entering the single combustor. The entire recuperator volume is used in both the single and dual turbogenerator operating modes.

Abstract: An electricity generating unit having a combined cycle, and comprising, mounted in succession along a common line of shafts via rigid couplings (28, 29, 31), a gas turbine (6), a steam turbine having a plurality of modules (1, 2), and an electricity generator (11), the gas turbine (6) being mounted to move in axial translation, and fixed to a moving abutment (27), said electricity generating unit being characterized in that the stator portions of the gas turbine (6) and of the first module (1) of the steam turbine are connected together via at least two links (32), in that said links (32) and the ends of the rotors of the gas turbine (6), and of the first module (1) of the steam turbine are enclosed in an enclosure (33) filled with a heat-conducting fluid, and in that each of the facing ends of the stator portions of the last two modules (1, 2) of the steam turbine is connected to a respective fixed point (34, 35).

Abstract: An electric power generating system employing a gas turbine (1) and a steam turbine (5) and a gasifier (9) supplying fuel-gas to the gas turbine (1) and to a steam generating fluidized bed combustor (37), the latter providing steam for the steam turbine (5). An auxiliary steam turbine (21), driving an electric generator (22), is also supplied by the circulating fluidized bed combustor steam generator (37). Since the gasifier (9) cannot be reversibly turned down easily, on a fall in load on the main steam turbine (5), the excess steam generated is diverted to the auxiliary steam generator (21) and the gasifier (9) kept running efficiently.

Abstract: An apparatus for the conversion of pressure fluctuations prevailing in fluid systems into electrical energy includes in a casing (1) a first chamber (4) which may be connected to a fluid system and is limited on one side by a movable wall, for example a membrane (3). The movable wall is mechanically linked to an apparatus (6), e.g. a piezoelectric converter, which converts the mechanical energy made available by the motion of the movable wall (3) into electrical energy (FIG. 1).

Abstract: The system ensures electric feed for which purpose it has an alternating current motor (1) coupled to an alternator (2) which is coupled to a hydraulic motor (8) which in turn is coupled to a diesel engine (7.)The alternating current motor is coupled by means of a clutch (6) to a high pressure pump (5.)All the elements are governed by a control circuit (4) so that in the absence of network, it simultaneously drives the diesel engine (7) and the hydraulic motor (8) the latter initially maintaining the angular speed of the alternator, until the diesel engine (7) attains its normal working conditions; as of when it is mechanically coupled to the alternator (2), the hydraulic motor (8) remaining turned off.The high pressure pump is capable of being directly coupled to the diesel engine (7) with which the hydraulic motor (8) is the one which maintains the angular speed of the alternator (2) at all times.

Abstract: A system for air conditioning and generating electrical power including a fuel-fired internal combustion engine, an electrical motor/generator, and a vapor compressor/expander all interconnected. The vapor compressor/expander driven by the engine operates in one mode with an evaporator and a condenser in a generally conventional refrigeration cycle. In an alternative mode, the vapor compressor/expander is operated in reverse by refrigerant boiled in the evaporator by the rejected heat of the engine and condensed in the condenser and contributes mechanical power to that of the engine to drive the motor/generator. The motor/generator can be supplied external electrical energy to operate as a motor to drive the compressor/expander during periods of non-operation of the engine.

Abstract: A power supply system for generating at least one of heat and electricity which includes a number of statically and functionally independent units adapted to generate at least one of heat and electricity which enable a maximum utilization of primary energy. For decentralized power supply over short and low loss supply lines the individual units are constructed as stackable modules. By exchanging or adding one or more modules, it is possible to adapt the flexibility of the power supply system to changes in demand for the energy thereby providing a practical approach to the utilization of waste heat for energy conservation purposes.

Abstract: The plant described resolves the problem of recovering the energy generated by heat engines under test, acceptance trials or experimental tests by the generation of alternating electrical current for which the alternator is always connected to the supply network even in the absence of mechanical energy produced by said engines under test, there being provided hydraulic pumping dynamometric units which act upon said generator through an accumulation and regulation unit which provides for smoothing out the liquid delivery rate by the action of a differential piston group adapted for exposing and closing discharge or supply apertures for the hydraulic circuit in response to the variations of power which take place during the test or acceptance cycles of said heat engines and which manifest themselves in variations in output rate of said dynamometric pumping units.

Abstract: A hydraulic process and apparatus recover energy generated by the testing of a motor in the form of electrical energy. The process includes utilizing a hydraulic pump and an asynchronous electric generator and coupling the shaft of the motor being tested to the hydraulic pump, feeding a plurality of hydraulic motors by the pump in accordance with the feed from the hydraulic pump and coupling the hydraulic motors to the asynchronous generator so that the motors will be capable of operating both as pumps and motors. The device for recovering energy includes a hydraulic volumetric pump, an asynchronous electric generator, and a pressurized oil reservoir connected to the hydraulic pump. The motor being tested is attached to the pump. A plurality of hydraulic motors are connected in parallel with the hydraulic pump and in series with the asynchronous electric generator so that the motors can act both as pumps by feeding themselves and as motors to furnish energy to the asynchronous generator.

Abstract: A method for controlling operations of hydraulic machines, in which two or more hydraulic machines are positioned in water conduits separated or branched upstream thereof with the branch water conduits downstream therefrom being joined together or maintained separate. Thus, these hydraulic machines are communicated with each other through the branch water conduits. In this method, the lower limit of a closing operational speed of guide vanes in one hydraulic machine is preferentially or overridingly controlled in the transient phase of operation, by detecting the closing operational speed of guide vanes of the other hydraulic machines. As a result, an abnormal condition in hydraulic pressure in upstream or downstream water conduits may be prevented, which condition would be caused in the event that the operational conditions of respective hydraulic machines are abruptly changed one after another.