Device for stable underwater electric power transmission to drive high-speed engines or other underwater loads

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering. Device for stable underwater electric power transmission to drive high-speed engines or other underwater loads, e.g. pumps, compressors and control systems, represents rotary stepped frequency change device, more precisely, frequency increase or decrease rotary device; it comprises engine and generator functionally connected so, that engine drives generator; at least, one vessel filled with gas and/or liquid, in which, at least, one of engine and generator is arranged, wherein cable length is long, which means long enough, to cause problems due to Ferranti effect at frequencies and power levels, suitable for underwater pumps and compressors engines. Through lengthy cable device gets power supply at input at sufficiently low frequency to have stable transmission. Functionally connected to engine device, at output outputs electric current frequency, current and voltage, suitable for connected engines operation. Hydrocarbon fluid medium underwater pressure increase system or other fluid medium comprises said device.

EFFECT: invention can be used in equipment for electric power transmission to underwater loads, located far from platform surface parts or from shore, requiring transmission of high power.

15 cl, 7 dwg, 4 tbl

 



 

Same patents:

FIELD: electricity.

SUBSTANCE: in electromechanical insert for connecting power systems the double supply machines (5 and 6) are connected to different energy systems (1 and 2) and coupled by rotors to converters (9 and 10) through five rings 11 instead of a standard number of six rings.

EFFECT: improved reliability and simplified design.

1 dwg

Dc link // 2546638

FIELD: electricity.

SUBSTANCE: power supply system link is fitted with the polar short-circuiting switches allowing to use thyristor bridges as reactive power regulators in case of link failure.

EFFECT: improved use of DC power supply system link.

5 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention offers the electric power transmission and distribution system suitable for power supply of underwater electrical loads. The system contains a primary DC transmitting cable (8), which can be hooked up to onshore AC/DC conversion module (2). The underwater cable end (8) is hooked up to the primary underwater power distribution unit (10), which contains DC/DC conversion module (14), having modular topology with groups of interdependent DC/DC conversion units, and a primary DC distribution mains (16). Secondary DC transmitting cables (24) and connected with them automatic switches (26) ensure hooking up of the primary underwater power distribution unit (10) to the secondary underwater power distribution units (18a, 18b). Each underwater power distribution unit (18a, 18b) contains the DC/DC conversion module (20a), having modular topology with groups of interdependent DC/DC conversion units. The respective secondary DC distribution mains (22a, 22b) are used for power supply of one or several underwater electrical loads.

EFFECT: possibility to decrease the size of onshore components.

12 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention relates to converter equipment. In order to provide a device for electric parameter conversion (1) in the area of electric energy transmission and distribution with the converter (2) switched between the alternating-current network (11) and direct-voltage loop (7) having power semiconductor valves (3) which are placed between the alternating-voltage output (4) and direct-voltage output (5, 6), at that each power semiconductor valve (3) includes a series circuit of bipolar modules (8), which comprise respectively an energy storage and power semiconductor circuit coupled in parallel to the above energy storage, and with network connection unit (9) coupled to the alternating-voltage output (4) for connection with alternating-voltage network (11), which ensures simple, effective and economical balancing of voltage in the direct-voltage loop in regard to the earth potential, the invention suggests a zero-point reactor (14) coupled to the potential point (13) between the network connection unit (9) and converter (2) having choke coils (15) coupled to the grounded zero point (16), at that the choke coils (15) are made so that for alternating current with the main oscillating frequency of the alternating-voltage network (11) it represents the pathway for current with high impedance in regard to the earth potential and for direct current the pathway for current with low impedance in regard to the earth potential.

EFFECT: balancing of voltages in the direct current loop in regard to the earth potential.

11 cl, 1 dwg

Dc link // 2520312

FIELD: electricity.

SUBSTANCE: device exchanges electric energy between power systems (1) and (2). Voltage inverters at each side are formed by diode bridges (7) and (8) and bridges (11, 12) of back-to-back closing gates. The controlled bridges (11) or (12) can be switched off for the periods of unidirectional energy transmission to perform routine maintenance or to reduce losses of electric energy.

EFFECT: improvement of reliability, carrying capacity and increase of efficiency factor.

2 cl, 1 dwg

FIELD: electricity.

SUBSTANCE: invention is related to the field of electric engineering and may be used for reactive power control in power supply systems for such devices as digging machines of different type, which are used for mining operations. The approximate defined embodiments can provide an adapted system, a device, manufacture, a scheme and/or a user interface and/or a method and/or a machine-readable medium containing instructions for activities that can contain by means of the preset data device for the preset digging machine consisting of a variety of active input cascades, at that each active input cascade is coupled electrically to the AC power mains of the above digging machine, each active input cascade is adapted to supply DC power to the DC bus, the above DC bus is coupled electrically to a variety of inverters and each inverter is adapted to supply AC power to at least one operating motor, an active power control is formed by each active input cascade in an independent way.

EFFECT: reduction of weight and dimensions, increase of power factor and electric energy quality.

15 cl, 14 dwg

FIELD: electricity.

SUBSTANCE: invention is related to the field of eclectic engineering and may be used in power supply systems supplying power to current collectors located far from the shore and under sea. The submerged power system (10) consists of a set of building blocks (12), (13) for modular power converters which are installed both at the side of power supply source (20) and the side of submerged current collector (30); they are united and interconnected in order to meet requirements to expansion of the operation area and configuration of the current collectors. The above power system (10) includes a transmission line/bus (14) which may transfer direct-current electric energy of high or medium voltage from the onshore facilities or upward side of the power supply source (20) to the set of submerged modules (18) of the current collector. The configuration of the multi-level modular power converter at the undersea side of the submerged power system (10) is symmetric to the configuration of the multi-level modular power converter at the onshore/upward side of the above system (10).

EFFECT: improving efficiency of power supply, reliability/fabricability, efficiency factor and specific power rating.

10 cl, 10 dwg

FIELD: electrical engineering.

SUBSTANCE: installation for electric power transmission contains a DC voltage network (100) and at least one three-phase AC voltage network (101) connected to it through a station (102). The station contains a voltage source transducer (103). The unit (104) is configured for the transducer control in accordance with the PWM principle for generation of AC voltage having a voltage component of the third harmonic added to the main voltage component. A transformer is absent between the transducer phase leads (106) and the AC voltage network (101). The layout (107) is configured for blocking the third harmonic voltage component and prevention of the component penetration into the AC voltage network.

EFFECT: power losses reduction.

10 cl, 9 dwg

FIELD: electricity.

SUBSTANCE: high-voltage direct current device includes the first converter unit (1) and the second converter unit (4), which are connected to main line (11, 21) and to return line (12, 22) respectively. Each converter unit (1, 4) is connected to an individual return line (12, 22). Return lines (12, 22) are connected to each other through pole line (31); at that, pole line (31) can be interrupted by means of pole line interruption unit (32).

EFFECT: providing high variability of the device in operating conditions, and namely for compensation of deactivations determined by the operation.

8 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: control device for transformer substations (5, 6) in high-voltage installation (1) of DC transfer comprises a unit (12) of rectifier control and a unit (13) of inverter control to control transformer substations that operate accordingly as a rectifier (5) and an inverter (6). Firing angles of accordingly the rectifier (5) and the inverter (6) are set and adjusted with the help of the units (12, 13). Between the units (12, 13) there is a delay link (20), with the help of which the start-up torque for adjustment of the inverter (6) firing angle is delayed relative to the start-up torque for adjustment of the rectifier (5) firing angle for the specified delay time (Δt).

EFFECT: provision of relatively quick transition from initial operating condition into new established operating condition.

3 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: invention is related to the field of electric engineering and may be used for reactive power control in power supply systems for such devices as digging machines of different type, which are used for mining operations. The approximate defined embodiments can provide an adapted system, a device, manufacture, a scheme and/or a user interface and/or a method and/or a machine-readable medium containing instructions for activities that can contain by means of the preset data device for the preset digging machine consisting of a variety of active input cascades, at that each active input cascade is coupled electrically to the AC power mains of the above digging machine, each active input cascade is adapted to supply DC power to the DC bus, the above DC bus is coupled electrically to a variety of inverters and each inverter is adapted to supply AC power to at least one operating motor, an active power control is formed by each active input cascade in an independent way.

EFFECT: reduction of weight and dimensions, increase of power factor and electric energy quality.

15 cl, 14 dwg

FIELD: electricity.

SUBSTANCE: invention relates to a generator for energy generation. Generator (100) includes floating platform (1) adapted for partial submersion into fluid medium, mast (2) located on platform (1) and containing at least one wind generator (3), at least one first energy storage device and one converter. Generator (1) also includes at least one system for storage and conversion of mechanical energy. At least one system for storage and conversion of mechanical energy includes at least one rechargeable mechanical storage battery (14), at least one balance arm (12) with a flywheel, which is connected to storage battery (14), and a device for conversion of mechanical energy to electrical energy. Wave motion or flow of fluid medium, into which platform (1) is submerged, determines oscillating movement of platform (1), mast (2) and at least one balance arm (12) for charging of storage battery (14), which in its turn outputs the energy generated by its movement to the mechanical energy conversion device.

EFFECT: invention is aimed at improvement of energy generation efficiency.

16 cl, 10 dwg

FIELD: electricity.

SUBSTANCE: installation for conversion of roll and pitch energy of the going vessel comprises a body of anticorrosive material with ratchet mechanisms arranged in parallel to its sides, one end of the mechanisms is placed in the rear part of the installation while the second is in the front part and is fixed to the cylinder-shaped shaft. Both ends are interconnected by a circuit connected to side outputs of a rectangular tank placed inside the installation. On the top of the tank there are a front and rear handles. Wheels of the tank are placed at the rails fixed to the installation bottom. Between rails in the front and rear part of the installation there are spring-type brake systems consisting of a heel and a spring. At the installation top part, from inwards, at both sides there are gripping mechanisms, which consist of a latch hook, a lock and spring.

EFFECT: simplification of the installation design, reduction of manufacturing costs.

5 dwg

Hydraulic unit // 2534642

FIELD: power industry.

SUBSTANCE: invention relates to hydraulic unit for removal of energy from wave movement. Automatic adjustable hydraulic unit 200 for conversion of wave energy includes pump 201 intended for fluid medium pumping through hydraulic unit 200. Pump 201 has housing 202 forming chamber 203 and piston 207 allowing separation of chamber 203 into working compartment 208 and blind compartment 209. A provision is made for an activating element that is connected to piston 207. The inlet hole is interconnected with working compartment 208 of chamber 203 so that a provision of fluid medium flowing from the inlet hole to working compartment 208 of chamber 203 is provided. The outlet hole is interconnected with working compartment 208 of chamber 203 so that a possibility of fluid medium flowing from working compartment 208 of chamber 203 to the outlet hole is provided. A provision is made for a hydraulic control device having a possibility of control of pump 201 by controlling the fluid medium pressure at the inlet hole and the outlet hole so that optimisation of pump 201 output power as a response to tidal variations and/or sea state is provided. Control of the fluid medium pressure at the inlet hole and the outlet hole is performed in compliance with a control algorithm.

EFFECT: invention is aimed at achievement of higher volumes of production at lower costs.

21 cl, 12 dwg

FIELD: power industry.

SUBSTANCE: hydrojet device includes a water passage with nozzles formed with vertical side walls and flat plates. The water passage is divided at least into two cascades. Each successive cascade has bigger height. Cascades are connected to each other by means of connection planks. Each cascade of the water passage has upper and lower outside channels, at least one upper inner nozzle, one lower inner nozzle and one central nozzle. An inlet water intake hole of the central nozzle is located vertically and perpendicular to the longitudinal axis of the water passage. Connection planks are inclined to the longitudinal axis of the water passage in a vertical plane. The water passage diverges along the longitudinal axis of the water passage in a horizontal plane. Flat plates are bent symmetrically and in a convex manner relative to the longitudinal axis of the water passage in a horizontal plane so that a blunt angle is formed. Water flow turbulisers formed with spiral-shaped vertical strips are installed on the outer side of the side walls of the water passage.

EFFECT: improving use efficiency of a hydrojet device at conversion of oscillating motion energy of a ship to hydrojet energy.

3 dwg

Wave power plant // 2482325

FIELD: electrical engineering.

SUBSTANCE: wave power plant contains at least one float 1 or several interconnected floats. The float 1 is shaped asymmetrically relative to the waves propagation direction; alternatively, the interconnected floats are positioned asymmetrical relative to the waves propagation direction. The said asymmetrical shape or the said asymmetrical position results in a circular motion of the float 1 or the element linking the interconnected floats in response to the pushing action of a series of waves propagating in the said direction. The power plant additionally contains elements for converting circular movement into rotation for extraction of energy.

EFFECT: conversion of waves reciprocating movement immediately into continuous rotation.

18 cl, 10 dwg

FIELD: machine building.

SUBSTANCE: transmission (10) is supported by turbine (5) housing and includes inlet (12), outlet (20) and gear train (14, 16) between inlet and outlet, which is intended to increase the rotation speed at the outlet in comparison to the inlet. Gear train includes many gear wheels for transmission of torque from inlet to outlet. Transmission also includes static carrier (44) of stage of planetary transmission (14), which is elastically connected to housing (50) of turbine to receive reactive torque of a single elastic gear train. Transmission also includes elastic support that includes extended torsional element (60) designed for elastic twisting around torsional axis (C).

EFFECT: improvement of turbine transmission design.

11 cl, 12 dwg

Hydrojet unit // 2447316

FIELD: power industry.

SUBSTANCE: hydrojet unit contains water conduit as system of channels with input water intake holes, vertical side walls and horizontal curved walls in channels cross-section. Water conduit is divided into two or more cascades and in each cascade there are systems getting narrower along flow direction of channels. Each further cascade has bigger height. Side walls of each conduit cascade are made with front and rear edges bevelled along the flow direction. Each conduit cascade has upper and lower outside channels, at least one upper inner channel, one lower inner channel and one central channel. At each side wall of cascades there vertical chambers formed by concave plates along rear edge of vertical side walls.

EFFECT: invention allows improvement of hydrojet unit efficiency at conversion of roll and pitch energy of a ship into hydraulic-jet energy.

3 dwg

FIELD: information technology.

SUBSTANCE: device for data transmission over water surface - marine notification column (MNC) - contains mast with equipment to receive and transmit communication signals, pivotally connected via rods with at least three floats connected with device for electric power generation made capable to convert work executed during relative movement of the floats and the mast into electric power as well as mooring device located in the lower part of the mast. MNC is also equipped with solar battery installed on the mast and being capable to be folded and deployed. The system of data transmission over water surface contains MNCs spaced-apart on marine and/or ocean water surface in at least one chain or network so that robust communication is ensured, and fixed in their locations using mooring devices. It is easy to estimate that to cover with complete square grid of MNCs with square side of 40 km providing robust communication in all directions of various water surfaces of seas and oceans it would be enough and to spare to have 200000 such masts.

EFFECT: obtaining information from remote regions, communication over marine space, placement of data transmission device directly on sea surface and providing robust communications within World ocean.

7 cl, 4 dwg

FIELD: power industry.

SUBSTANCE: hydraulic jet device includes water conduit made in the form of system of channels with inlet water intake holes, which is located symmetrically relative to its longitudinal axis, vertical side walls common for all channels and horizontal curved walls in cross section of the channels, which form nozzles converging in the flow direction, which are meant for conversion of mechanical energy of the ship's pitching to hydraulic jet energy. At that, on each side wall of channels on outer side of water conduit there is vertical chamber with inlet hole on the side of front side of water conduit; vertical side walls have front and rear edges which are chamfered in the flow direction, each of which forms an angle respectively on the inlet side, to water conduit and on outlet side from it with vertex of an angle, which is located on longitudinal axis of water conduit; water conduit has upper and lower external channels, at least two internal upper and two internal lower channels and one central channel; at that, inlet water intake hole of central channel is located vertically, perpendicular to water conduit longitudinal axes; external walls of upper and lower external channels are concave relative to water conduit longitudinal axes; upper and lower walls of upper and lower internal channels respectively, which are common with channels adjacent to them of upper and lower external and internal channels, as well as upper and lower walls of central channel consist of straight plates with concave inlet section relative to water conduit longitudinal axis; at inlet of central channel in the middle between its horizontal curved walls there installed with possibility of being bent relative to its inlet edge is horizontal flat plate the inlet edge of which protrudes forward and is located in front of inlet water intake hole of central channel; at the inlet of external and internal channels there installed are flow turbulators made in the form of the rods located in middle section between curved walls across the flow entering the channels, and vertical chambers are formed with concave plates located along rear edge of vertical side walls so that concave plates form together with side walls of water conduit the convergent-divergent nozzles.

EFFECT: increasing use efficiency of hydraulic jet device at conversion of pitching energy of ship to hydraulic jet energy.

3 dwg

FIELD: power industry.

SUBSTANCE: store of energy created with wind force includes sufficient amount of energy to meet the demands of the whole mankind. The invention represents effective device supplying this energy store for practical use. On rotating drive shaft 3 there installed is a pair of shaped parts 1, 2 of convex and concave profile, open V-shaped profile with rounded top, which reverses its orientation through 180 degrees, i.e. it is rotated from convex state to concave state. Drive shaft is rotated through 180 degrees. Circular movement of water, which takes place in the wave, effectively brings into operation such turbine, while the wave dies away. Pair of concave and convex shaped parts 1, 2 is spirally spread about drive shaft 3, by means of which the streams in all directions, which come into contact with pair of shaped parts, create the torque moment.

EFFECT: improving the use efficiency of streams and multidirectional oscillatory movements occurring in waves.

25 cl, 20 dwg

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