Abstract: Devices and methods of use for brush holder assemblies are disclosed. Brush holder assemblies including a mounting block and a brush holder are disclosed. Also illustrated is a brush holder assembly including a first portion in sliding engagement with a second portion. In some embodiments the brush holder includes a channel, such that at least a portion of the mounting block is disposed within the channel of the brush holder.

Abstract: A miniature hydro-power generation system includes an outer housing and an inner housing. The outer housing may receive a flow of liquid flowing in a first direction at a predetermined range of pressure. The flow of liquid may be decreased by a predetermined amount of pressure and increased by a predetermined amount of velocity and channeled to a hydro-generator included in the inner housing with an inlet nozzle. The flow of liquid may be channeled with the inlet nozzle to flow in a second direction that is substantially perpendicular to the first direction. Upon transfer of kinetic energy in the flow of liquid to the hydro-generator, the inner housing may rotate in the second direction. The flow of liquid may then be channeled back to the first direction and out of the housing with an outlet nozzle. The outlet nozzle configured to increase the pressure and decrease the velocity of the flow of liquid to minimized non-laminar flow characteristics.

Abstract: A power generator includes a magnetic pole rotor in which a plurality of N magnetic pole cores and S magnetic pole cores are arranged alternately at regular intervals and that is rotatably supported, stator coils that oppose the magnetic pole rotor and are wound round pole portions of poles of stator poles so as to generate AC power, full-wave rectifying circuits 18 for respective stator coils, and smoothing circuits that are connected to the output sides of the respective full-wave rectifying circuits. The power generator is so structured as to convert multiphase AC generated electric power into DC electric power. Further, line ends of positive (+) poles at the output side of the smoothing circuits are connected to the input side of rectifiers that make only current in the forward direction pass through, and the output side (+) line ends of the rectifiers are connected to a (+) combination line.

Abstract: Hydraulic system for driving an auxiliary power source is provided, which is specifically adapted for use with a system for controlling hydraulically driven AC generator. The system includes a hydraulic pump and hydraulic motor that are connected by a fluid circuit. The hydraulic motor drivably connected to an AC generator and is operated in a manner to generate a stable AC power output. The system may include a valve which bypasses fluid around the motor or a variable displacement pump so that the fluid flow rate through the hydraulic motor is controlled in a manner to maintain the desired AC generator output level. Sensors are further provided measuring operating parameters of the system so that the controller can maintain desired operating condition limits.

Abstract: Device for absorption of wave energy, comprising a floating body (2) adapted to move as a result of influence from waves, and energy transmission means transmitting movement of the floating body to a generator, characterized by that it further comprises an immersed vessel (32), the upper part thereof containing gas and lower part thereof containing water, where the interior of the vessel (32) has pressure communication with the surrounding water, so that the volume of the gas in the vessel (32) depends on the pressure surrounding the vessel and thus affects the weight of the vessel (32) and its contents, the vessel (32) having such a connection to the rest of the device that it moves mainly vertically and in anti-phase in relation to the vertical movement of the floating body (2) when waves moves past the device, where the vessel (32) is connected to energy transmitting means for transmitting its movement to a generator.

Abstract: The present invention provides a power converter that can be used to interface a generator (4) that provides variable voltage at variable frequency to a supply network operating at nominally fixed voltage and nominally fixed frequency and including features that allow the power converter to remain connected to the supply network and retain control during supply network fault and transient conditions. The power converter includes a generator bridge (10) electrically connected to the stator of the generator (4) and a network bridge (14). A dc link (12) is connected between the generator bridge (10) and the network bridge (14). A filter (16) having network terminals is connected between the network bridge (14) and the supply network. A first controller (18) is provided for controlling the operation of the semiconductor power switching devices of the generator bridge (14).

Abstract: The target regulation voltage setting apparatus for a vehicle on which a vehicle alternator is mounted includes a first function of calculating a large first-order delay and a small first-order delay of a rotational speed of the vehicle alternator at regular time intervals, a second function of making a judgment on a running state of the vehicle by determining whether or not the vehicle is in one of an accelerating state and a decelerating state on the basis of a variation of the large first-order delay supplied from the first function, and determining whether or not the vehicle is in a normal state on the basis of a variation of the small first-order delay supplied from the first function, and a third function of determining a target regulation voltage of the vehicle alternator in accordance with a judgment result of the second function.

Abstract: A linear wind powered electric generator (LWPEG), which is particularly adapted for installation at geographical sites subject to lower wind intensities. More specifically, there are provided design concepts for an LWPEG, possessing reasonable economic parameters for utilization at the lower-intensity wind sites. Moreover, the linear wind powered electric generator is based on a track based wind power generator, incorporating aerodynamic designs, which are adapted to reduce mechanical complexities presently encountered in this technology, while being cost-effective both in construction and in connection with the operation thereof.

Abstract: The fluid power generator is provided. The fluid power generator includes: a first member that has multiple coils; a second member that is rotatable relative to the first member and that has multiple permanent magnets; a rotating member that is mechanically linked with either one of the first member and the second member to rotate by fluid force; and a clearance controller that moves at least one of the first member and the second member to thereby change a clearance between the first member and the second member, wherein the clearance controller changes the clearance in such a manner as to make the clearance smaller after a start of rotation of the rotating member than before the start of rotation of the rotating member.

Abstract: An electrical power source including a free-piston Stirling engine driving an alternator to supply power through a bus to a user load and controlled by an engine/alternator controller. A bidirectional DC/DC converter is connected between a battery and the bus. The stroke of the engine piston is modulated between a maximum and a minimum stroke to maintain the bus voltage at a design nominal bus voltage (V1), and charge the battery if it is not charged, when and so long as the bus voltage does not fall below a design nominal bus voltage (V1). The Stirling engine is operated at its maximum piston stroke, and the battery is charged if it is not charged, when the bus voltage is in the range between the design nominal bus voltage (V1) and a design minimum battery charging bus voltage (V2).

Abstract: A hydro-generation system includes housing having a passageway, a turbine nozzle, a rotor and a stator. The rotor includes a plurality of turbine blades and a permanent magnet. A flow of liquid may enter the passageway and be directed by the turbine nozzle to the turbine blades to induce rotation. The stator is position within the permanent magnet such that rotation of the permanent magnet induces the production of the electrical energy in the stator. The flow of liquid may flow through the housing and out of the hydro-generation system.

Abstract: During operation of a power generating plant, which essentially comprises a gas turbogroup, a compressed air accumulator, an air turbine which is equipped with at least one generator, the compressed air which is extracted from the compressed air accumulator is directed through a heat exchanger, which acts on the outflow side of the gas turbogroup, and is thermally conditioned there. This compressed air then charges the air turbine, wherein during a “black out” or other shutdown of the power generating plant, the electric current energy which can be obtained by means of the thermally conditioned compressed air in the air turbine, via a power line is used directly for start-up of the gas turbogroup.

Abstract: In a wind power generation system, an AC input of a unit for coping with system faults is connected to an excitation converter and a DC port of the unit for coping with system faults is connected to a DC port of a converter through resistors. A plurality of energy consumptive circuits each constructed of a resistor and switching units are provided for the DC port of the unit for coping with system faults.

Abstract: The present invention provides a power converter that can be used to interface a generator (4) that provides variable voltage at variable frequency to a supply network operating at nominally fixed voltage and nominally fixed frequency and including features that allow the power converter to remain connected to the supply network and retain control during supply network fault and transient conditions. The power converter includes a generator bridge (10) electrically connected to the stator of the generator (4) and a network bridge (14). A dc link (12) is connected between the generator bridge (10) and the network bridge (14). A filter (16) having network terminals is connected between the network bridge (14) and the supply network. A first controller (18) is provided for controlling the operation of the semiconductor power switching devices of the generator bridge (14).

Abstract: A turbomachinery electric generator arrangement includes a rotary compressor, a generator having a rotary armature and a stator, a combustion chamber to which compressed gas is directed from the compressor, a rotary turbine to which combustion product is directed from the combustion chamber and a bearing arrangement supporting in rotation the rotary compressor, rotary armature and rotary turbine. Compressed gas for cooling components of the arrangement is directed from the rotary compressor, typically being tapped off from a subsidiary gas output upstream of a primary gas outlet. Bearing thermal shielding and modular construction of components are also features of the arrangement.

Abstract: Described is a system for generating electrical power, which system includes a turbine that is mechanically connected to a generator, which in turn is connected via a multiphase transformer to a load. In at least one embodiment, at least two counter-connected switching devices of the converter are assigned to each phase of the transformer. The transformer is provided on the side facing the converter with two winding arrangements in a star connection. Each of the windings of the first winding arrangement is connected to the switching devices belonging to one phase and switched in one direction. Each of the windings of the second winding arrangement is connected to the switching devices belonging to one phase and switched in the opposite direction. The star points of the two winding arrangements are connected via a direct current choke.

Abstract: A miniature hydro-power generation system includes an outer housing and an inner housing. The outer housing may receive a flow of liquid flowing in a first direction at a predetermined range of pressure. The flow of liquid may be decreased by a predetermined amount of pressure and increased by a predetermined amount of velocity and channeled to a hydro-generator included in the inner housing with an inlet nozzle. The flow of liquid may be channeled with the inlet nozzle to flow in a second direction that is substantially perpendicular to the first direction. Upon transfer of kinetic energy in the flow of liquid to the hydro-generator, the inner housing may rotate in the second direction. The flow of liquid may then be channeled back to the first direction and out of the housing with an outlet nozzle. The outlet nozzle configured to increase the pressure and decrease the velocity of the flow of liquid to minimized non-laminar flow characteristics.

Abstract: A power converter arrangement for connecting an induction generator to an electric power network comprises a first path provided for transferring electric power from the induction generator to the electric power network during a first operation condition, and a second path provided for transferring electric power from the induction generator to the electric power network during a second operation condition, where the first path includes an AC-AC converter and the second path includes a switch. A capacitor arrangement is interconnected between the induction generator and the first and second paths and a first AC reactor device is interconnected between the capacitor arrangement and the first and second paths, where the capacitor arrangement is provided for compensating for a magnetization current of the induction generator.

Abstract: A miniature hydro-power generation system may include a hydro-generator, a control circuit and an energy storage device. A flow of liquid may be used to rotate the hydro-generator to generate electric power. The control circuit may switch the electric power to charge the energy storage device and/or to supply the electric power to an electrical load. The control circuit may also selectively switch the energy storage device to supply electric power to the electrical load. Further, the control circuit may disable both the hydro-generator and the energy storage device from supplying electric power to the load.

Abstract: A liquid treatment system that may be self-powered includes a hydro-generator. A flow of liquid may be used to rotate the hydro-generator to generate electric power. The hydro-generator may include an outer housing and an inner housing. The inner housing may include a first hub removably engaged with a second hub. A plurality of paddles may be replaceably engaged between the first hub and the second hub. An electrical generator may be disposed in the inner housing. A flow of liquid may strike the paddles causing the inner housing to rotate. During rotation of the housing, the electrical generator may produce electrical power.