Autonomous wind-driven station
FIELD: power engineering.
SUBSTANCE: wind-driven station comprises several wind-driven plants with AC generators and an electromechanical converter with an AC motor, comprising a number of pole pairs equal to a number of wind-driven plants of the station. The winding of one pair of motor stator poles is connected with a stator winding of the generator of only one of wind-driven plants. The stator winding of the AC generator of the electromechanical converter is connected to the AC buses of the station. The motor of the electromechanical converter is made with additional poles, windings of pairs of which form the specified stator winding of the AC generator.
EFFECT: simplified design of a wind-driven station with the possibility to use it both with synchronous and asynchronous generators.
The invention relates to the field of wind energy, specifically to a stand-alone wind power stations, containing several wind turbines with AC generators.
The wind power station is constructed so that the distance between wind power installations accounted for approximately 6-18 diameter propeller. This allows you to minimize the mutual influence of wind turbines, eliminating the decrease in wind speed from standing in the second echelons of the units for wind direction. But the wind is random. Therefore, the wind speed before the wind wheel is always different, and therefore different and capacity of wind turbines. For example, with increasing wind speed before the first wind power installation of its capacity will increase in the cubic dependence, and speed before the subsequent wind power installations have the old value, while the front of the indicated increase in wind speed will not overcome the specified distances between wind power plants. In turn, this causes the mutual influence of wind turbines and electrical parts in the form of power fluctuations tire wind power station. In the wind these power fluctuations are particularly obvious and often drive the t to the violation of stability of synchronous work station, since the resistance between the synchronous generators is provided by mutual corner.
Known wind power station (similar), containing several wind turbines with synchronous generators AC and the Electromechanical transducer of the two electric machines. The stator winding of the alternator Electromechanical transducer connected to the tires AC station (Dyakov A.F., Pernow AM, Chachacn YG Wind power in Russia. The state and prospects of development. - M.: MPEI Publishing house, 1996, see p.81-84). The motor of the Electromechanical transducer, designed as a DC machine, connected to the DC bus stations. To the same DC buses station is connected, each through its semiconductor rectifier synchronous generators of all wind turbines in parallel. This scheme preserves the mutual influence of wind turbines on the DC bus, but solves the problem of stability of synchronous station operation and reduces power fluctuations on the tires of the total load station through a shared centrifugal mass of the rotors of the Electromechanical Converter.
Device-analog has the following disadvantages. First, the scheme of the station contains a DC machine. Od is ako known (Electrical engineering Handbook. 4 ed., vol. 1, book 1, M, 1971)that the presence of the collector and brush device complicates its design, leads to high cost and relatively low reliability. Secondly, the scheme of the station contains a semiconductor rectifier according to the number of wind turbines. These moments generally complicate the scheme of wind power stations.
A device prototype (IPC F03D 7/02, Patent No. 2422674). Wind power station, containing several wind turbines with AC generators and Electromechanical Converter of the two electric machines, the stator winding of the alternator which is connected to the tires AC station, according to the invention, the motor of the Electromechanical Converter is implemented as an electric alternating current machine with the number of pole pairs equal to the number of wind turbines station, and the stator windings of the motor of the Electromechanical transducer connected to the stator windings of generators of wind turbines, and the winding of one pair of stator poles of the motor are connected with the stator winding of the generator is only one of the wind turbines.
The drawback of the prototype - design complexity due to the presence of two different types of electrical machines per the term of the current Assembly.
The technical problem to be solved by the proposed device consists in the simplification of the wind power station. The technical effect that solved the technical problem is the location of the generator windings on additional pairs of poles of the motor. This simplification is achieved by vetroenergeticheskoj station.
The problem is solved in that in a wind power station with several wind power plants with alternating current generators and Electromechanical Converter with AC motor that contains the number of pole pairs equal to the number of wind turbines station, and the winding of one pair of stator poles of the motor are connected with the stator winding of the generator is only one of the wind turbines and stator winding of the alternator Electromechanical transducer connected to the tires AC station, the motor of the Electromechanical Converter is implemented with additional poles, winding pairs which form specified stator winding of an AC generator.
The drawing shows a General view of the proposed Autonomous wind power station with three wind power plants.
In Autonomous wind power station according to the drawing, the first wind energy is the installation of the wind wheel 1 through the multiplier 2 is connected to the AC generator 3, and the second and third power plants that make up the relevant items 4, 5, 6 and 7, 8, 9. The drawing shows that when connecting to the local power system Electromechanical transducer 10, the rotor 11 of the motor is connected by means of shaft 12 through the clutch 13 and the gear 14 to the engine 15. The windings 16, 17 and 18 are wound respectively first, second and third pairs of stator poles 19 of the motor of the Electromechanical transducer 10. The coil 16 through the circuit 20 is connected with the stator winding of the generator 3 of the first wind power installation. The coil 17 through the circuit 21 is connected with the stator winding of the generator 6 of the second wind power installation. Winding 18 through the circuit 22 is connected with the stator winding of the generator 9 of the third wind energy plant. Additionally located on the stator 19, for example, three windings 23, 24, 25 form a generating coil of the Electromechanical transducer 10. They through the circuit 26 is connected to the tire AC 27 local energy systems.
At the same Autonomous wind power station has two types of performance. The first Electromechanical transducer 10 is designed as a multi-pole synchronous machine with AC power, the generators 3, 6 and 9 wind turbines made in the form of asynchronous AC machines. Second - elec is romanichesky Converter 10 is made in the form of a multi-pole asynchronous machine AC the generators 3, 6 and 9 wind turbines made in the form of a synchronous AC machines, and bus AC 27 must be the tyres powerful power systems for reactive power compensation.
The winding of each pair of poles of the Electromechanical transducer 10 may be performed, for example, according to the scheme of three-phase concentric winding for a split stator (Waldek A.I. of the Electric machine. 2 ed., revised and expanded, publishing house "Energy", Leningrad branch, 1974, see str-419).
Autonomous wind power station in the execution of the Electromechanical transducer 10 in the form of a multi-pole synchronous AC machine and generators 3, 6, 9 wind turbines made in the form of asynchronous AC machines, works as follows. As mentioned, the wind speed U1U2U3specified on the drawing, always different, and therefore different and capacity of wind turbines. When this wind turbine 1, 4 and 7 rotate with different speeds. Therefore, the rotor asynchronous generators 3, 6, 9 also rotate with different speeds with the slides, not exceeding a critical value. Since the electrical connection between the circuits of the windings 16, 17 and 18 pairs of stator poles 19 of the synchronous machine and the stator about the Otok asynchronous generators respectively 3, 6 and 9 no, the threads of the active capacity of the latter is directed to the Electromechanical transducer 10 and added them into mechanical power to the rotor 11 of the Electromechanical transducer 10. The total flight weight of the rotor 11, the gear 14 and diesel 15 reduces power fluctuations on the tires 27 total load station. Flows of reactive power required for normal operation asynchronous generators 3, 6 and 9 wind turbines, are generated synchronous Electromechanical transducer 10 and is directed from its windings 16, 17 and 18 to the generator 3, 6 and 9, i.e. directed against the flow of active power.
Autonomous wind power station in the execution of the Electromechanical transducer 10 in the form of an asynchronous machine AC and generators 3, 6, 9 wind turbines in the form of a synchronous AC machine works on the active power in the same way as in the previous case. I.e. threads active powers are directed from the generator 3, 6 and 9 to the inverter 10. But since each pair of poles of the Converter 10 operates in the single mode asynchronous machines, the reactive power necessary for their operation, are generated by synchronous generators 3, 6 and 9. Thus, streams of reactive power is directed from the generator 3, 6 and 9 to the engine 12. Gene is attornye winding 23, 24, 25 of the Electromechanical transducer 10 is operating in the mode of induction generator for normal operation which reactive power is consumed from the powerful energy system. This is the critical difference from the previous case.
The problem is solved by the proposed device. Autonomous wind power station is simplified, as there is no machine Electromechanical transducer. In addition, it can be used in wind power plants with synchronous generators and induction generators, which expands the area of its application. The proposed device can be applied to work in parallel with a powerful grid connection to her Shin AC station.
Wind power station with several wind power plants with alternating current generators and Electromechanical Converter with AC motor that contains the number of pole pairs equal to the number of wind turbines station, and the winding of one pair of stator poles of the motor are connected with the stator winding of the generator is only one of the wind turbines and stator winding of the alternator Electromechanical transducer connected to the tires AC station, characterized in that the motor of the Electromechanical Converter is implemented with additional poles, winding pairs which form specified stator winding of the alternator.
FIELD: power industry.
SUBSTANCE: wind-driven heat generator includes a wind engine with a power shaft, which is connected through a coupling to the heat generator shaft having blades and a barrel-shaped housing attached with its lower part to a fixed disc. In the centre of the housing there arranged is a cylinder having from above a cover plate and blades attached to its inner wall and alternating with the shaft blades. In lower part of the cylinder there fixed is a ring contacting a movable disc, stiffly with gusset plates attached to the heat generator shaft. A tubular coil is installed along inner generatrix of the housing, which has inlet and outlet branch pipes connected to hot water supply or heating systems. Cells made in the form of rectangles and cylinders and filled with heat accumulating substance are installed on the coil.
EFFECT: invention ensures operating reliability and reduction of external heat losses at simple design.
FIELD: power industry.
SUBSTANCE: friction heater includes a heated medium tank, in which there installed are fixed friction elements and turning friction elements connected to a drive shaft and installed with a gap between them, side walls and the bottom of the tank. Upper turning friction element is made in the form of a disc, and lower turning friction element is made in the form of a ring. Fixed friction elements are made in the form of shoes installed with possibility of their interaction with the turning friction disc and the ring. Mixing blades are installed between the disc and the ring. The tank is provided with holes in lower and side parts. Lower turning friction element can be made in the form of a ring with the width equal to width of lower friction shoe. Distance between the turning friction disc and the ring is more than their total thickness. Friction shoes can be pressed to the disc and the ring by means of stiff springs.
EFFECT: invention ensures simple design and enlargement of functional capabilities at reduction of cost.
4 cl, 1 dwg
SUBSTANCE: invention relates to ship building, more specifically - to floating power generation facilities. Sea floating power plant (SFPP) includes body in the form in plane of isosceles triangle at corners of which pillars with wind power plants (WPP) at their top ends are located; control house and anchor positioning system. In submerged parts of its body, through cuts are made, and freeboard height constitutes at least 0.01 of outer length of its board. WPP pillars are made as masts and are installed on upper deck. The height of WPP location on masts is not less than sum of its blade length and the greatest height of wave possible in corresponding aquatic area. Also, SFPP is fitted with equipment for electric power generation using wave energy, sea current energy, solar energy.
EFFECT: invention allows for lowering weight of structures and SFPP positioning system while increasing electric energy output and improving operation safety due to higher initial stability.
7 cl, 3 dwg
FIELD: power industry.
SUBSTANCE: conversion method and system of wind energy involves a closed circulating element located horizontally above the ground, on which at least one lifting body (6) is fixed by means of a retaining rope or a chain; at that, in the section of closed circulation trajectory (U), in which traction force directed in the circulation direction acts on lifting body (6) through the flow acting on the cross section subject to influence, distance between the circulating element and the lifting body is set to a larger value in comparison to the value in the section of closed circulation trajectory (U), in which no traction force directed in the circulation direction acts on lifting body (6) by means of the flow acting on the cross section subject to influence. Lifting body (6) during circulation relative to the flow is installed so that it undergoes the force component acting in the circulation direction even at the flow acting across instantaneous circulation direction of the circulating element and transmits the above force component through the retaining rope to circulating element (1), thus increasing the angular range of the circulation trajectory, inside which flow net energy can be used.
EFFECT: effective conversion of energy even of weak winds prevailing above the ground level.
15 cl, 7 dwg
FIELD: power industry.
SUBSTANCE: rotation conversion mechanism of the wind-driven power plant equipped with a shaft performing the revolutions caused with periodic vibrations of a cross tie rod of the plant by switching over turning vanes, a flywheel and an electric generator, is made in the form of an input gear put on the shaft, the first and the second drive gears which are related to it through external engagement, the first and the second ratchet clutches which are related with their input shafts to their shafts, the first and the second intermediate gears put on their output shafts respectively, and a driven gear related to them through internal and external engagement. In addition, the mechanism includes a ratchet clutch, the input shaft of which is connected to the driven gear shaft, and its output shaft is connected in series to the flywheel and the rotor of the electric generator.
EFFECT: continuous rotation of the electric generator rotor during the whole period of vibrations.
FIELD: power engineering.
SUBSTANCE: tunnel power plant comprises an air turbine with a power generator communicated with an air intake located along the perimeter of the upper part of the diametrical cut of the tunnel following the shape of its upper part and a discharge air duct with a system of air valves. Passing-by vehicles are used as a piston. At the left and right side of the tunnel there is a system of rotor wind-powered generators with a vertical axis of rotation, connected to a load via a control system that accumulates and redistributes the received energy.
EFFECT: development of a device for production of energy by means of artificial creation of air pressure difference in an air tunnel and its efficient conversion by different methods into energy.
SUBSTANCE: airship exploiting lift of bearing gas comprises rigid airframe, wings, sectional channel windmill and storage batteries arranged in through conical wind channel with safety screen, and drive electric motors. Said wind channel comprises channel used to convert air energy into electric power by windmill and separate sealed sections to house electric station equipment. Said equipment includes generators, storage batteries, windmill with horizontal shaft, idler pulleys to increase generator rpm. Service pass is arranged along wind channel and sealed sections.
EFFECT: higher safety, power savings.
SUBSTANCE: invention relates to automotive industry. Proposed cowl consists of cylindrical body with ribbed surface and is secured on rod and two ball bearings. Said cowl serves to reduce drag by rotation and to convert said rotation into electro power.
EFFECT: decreased drag.
FIELD: power engineering.
SUBSTANCE: stator of a wind-driven power generator of synchronous type comprising a base, fastening elements, magnetic conductors and coils, is arranged in the form of two parallel T-shaped magnetic conductors, to the ends of which a "Ш"-shaped magnetic conductor is fixed so that edges of its horizontal link are joined with ends of vertical stands of T-shaped magnetic conductors, and vertical stands of the "Ш"-shaped magnetic conductor are covered with additional coils.
EFFECT: improved manufacturability, higher reliability by usage of windings of coil type, and also the fact that widely spread T-shaped and "Ш"-shaped magnetic conductors are used.
FIELD: power engineering.
SUBSTANCE: wind-driven power generator stator comprising a base, fastening elements, U-shaped magnetic conductors and coils, is equipped with strip magnetic conductors placed above ends of U-shaped magnetic conductors, at the same time thickness of strip magnetic conductors is equal to height of coil extension above ends of U-shaped magnetic conductors.
EFFECT: higher reliability and improved manufacturability based on using coil-type windings and widely spread U-shaped magnetic conductors.
FIELD: blowers united with wind turbine, possibly used in different branches of industry and in objects of social and living designation.
SUBSTANCE: blower includes drum impeller with vanes mounted in horizontal shaft. Impeller is arranged in cylindrical casing having air intake opening and diffuser. Novelty is wind turbine built-in to structure of blower system. Wind turbine includes wind wheel with vanes on horizontal shaft. Wind wheel is arranged in cylindrical casing with air intake opening and diffuser. Diffuser of blower is connected with air intake of wind turbine. Carrying structure of blower is joined with carrying structure of wind turbine.
EFFECT: improved design, enhanced efficiency.
3 cl, 6 dwg
FIELD: power engineering; small power stations with open turbine hall.
SUBSTANCE: proposed emf source has open turbine hall; foundation; electrical machine provided with rotor, stator, and current-collection unit and connected to drive; self-contained starting motors connected to power supplies; as well as control unit and output module. Novelty is that open turbine hall floor of emf source is provided with circular race, surface part of foundation is equipped with anchor straps, slabs, locking brackets and rollers, aligning brackets and rollers; rotor is installed in journal bearing on annular support of foundation rotor; shaft of the latter has axial hole with service lines; source has supporting and aligning slab incorporated in frame built of hold-down beams, thrust columns, frame and foundation; it also has capital, rotor and stator drive mechanism, pods, aerodynamic compensator, distribution board, jet thrust matching device, thrust electric circuit switch, and auxiliary equipment power supply unit.
EFFECT: simplified design, facilitated maintenance of unit incorporating emf source; enhanced efficiency.
1 cl, 16 dwg
FIELD: wind-power engineering; electrical energy generation.
SUBSTANCE: proposed wind-powered generator has tower with adjustable windwheels, windward positioning device, wound rotors and stators; rotors are made in the form of concavo-concave aerodynamic disks mounted on ends of blades; stator has pole shoes whose ends are coupled with rotors. Windwheels are mounted on shafts of convertible electrical machines incorporating stator excitation system and rotor inductor; inductor coils are connected to rectifiers mounted on windwheel blades; rectifier outputs are connected to field coils installed in rotor disks.
EFFECT: enhanced specific load, reduced starting torque, facilitated acceleration to rated speed.
1 cl, 3 dwg
FIELD: wind-power engineering; wind power generators.
SUBSTANCE: proposed windmill-electric generating unit has electric generators; novelty is that this unit is made in the form of flow-through piping network with sealed valves and pressure transducers, generating unit ends being disposed in areas held at different atmospheric pressures; piping length and diameter meet following expression: D/L = ρλv
EFFECT: provision for continuous operation of windmill-electric generating unit.
1 cl, 1 tbl
FIELD: wind-power engineering; generation of electric power.
SUBSTANCE: proposed wind-power electric generator has tower with swivel cross-member and wind wheel, wind setting unit, rotors and stators with windings; rotors are made in form of aerodynamic washers having shape of concavo-concave disks secured on ends of blades and stator is provided with pole pieces whose ends are magnetically connected with rotors which are magnetically connected with additional stators; blades are provided with additional rotors magnetically connected with additional stators; additional rotors are electrically interconnected.
EFFECT: reduction of starting torque.
FIELD: wind power engineering.
SUBSTANCE: invention relates to plants generating electric energy to produce hot water for industrial use. Proposed combination wind power plant containing energy generating unit in form of windmill, air flow booster connected with windmill and energy generating and transforming unit in form of air turbine and generator connected to turbine, generator being butt-joined with gas-turbine turbine engine is furnished, according to invention, with heat recovery unit and processing unit, for instance, sea water freshening and cleaning unit made in form of thermal distiller and reverse osmosis device connected with heat recovery unit. Blades of windmill are made divided into sections for turning relative to each other with possibility of turning relative to longitudinal axis. Energy generating and transforming unit is provided with additional self-contained internal combustion engine and electric generator connected with said engine which is coupled with generator of gas-turbine unit to form common power unit. Control system includes device which, together with computer, provides electric parameters similar to network parameters. Energy generating unit is provided with device to divide air flow, said device being connected by flexible air line with air flow booster made programmable, for instance, pneumatic and multistage, whose low-pressure stage is connected with air turbine and with each member of processing unit, and high-pressure stage, with device to evaporate water of thermal distiller and reverse osmosis device which are connected with heat recovery unit. Point of connection of air line and power supply line is common, and torsion shafts coupled with vane engine and turbine are connected to said point.
EFFECT: increased efficiency owing to recovery of exhaust (hot) gases of engine and dissipation heat, enlarged sphere of industrial application of plant.
34 cl, 1 dwg
FIELD: power and heat supply.
SUBSTANCE: invention relates to self-contained power, heat and hot-water supply systems of dwelling houses and industrial buildings. Proposed system contains wind power generating plant for generating electric power and connected with power consumers; energy accumulator connected with wind power generating plant and power consumers; plant for converting solar energy into heat energy and heat accumulator, both connected with heat energy consumers. System includes heat pump driven by wind power generating plant and connected with heat energy consumers; inverter through which electric energy accumulator is connected with electric energy consumers; sewage water heat recoverer; Earth heat collector and automatic control system connected through heat and electric load transmitters with actuating mechanisms. Plant for converting solar energy into heat energy contains gang of solar collectors connected by heat carrier lines with at least two heat exchangers, one of which is arranged in heat accumulator and the other in heat exchange device connected by heat carrier line with Earth heat collector. Heat pump contains compressor driven by wind power generating plant, at least two extension evaporators and at least two extension condensers. Extension evaporator is built into heat exchange device connected by heat carrier line with Earth heat collector. Extension evaporator is built into sewage heat recoverer. Extension condenser is built into hot-water tank, and second extension condenser is built into heat exchange device connected by heat carrier lines with heat energy consumers.
EFFECT: improved reliability and economy of self contained power and heat supply systems.
10 cl, 5 dwg
FIELD: wind power engineering.
SUBSTANCE: invention can be used for converting energy of air flows into electric energy. Proposed method includes passing of first on-coming air flow between two conversing and diverging aerodynamic surfaces in direction of flow to form zone of reduced pressure and transmitting of second air flow along pipeline from surrounding space into zone of reduced pressure. Converter is installed on way of second air flow. Space is made in zone of reduced pressure in, at least, one of aerodynamic surfaces to provide swirling of second air flow by wall of said space. Swirling of second air flow is formed tangentially in direction of passing of first on-coming air flow. Device contains two plates. Pipeline is designed to transmit second air flow. One end of pipeline is made open and it is connected with surrounding space, and other end is connected to outer surface of one of plates. Converter is installed in pipeline. AT least one of plates is provided with space to swirl second air flow. Space communicates with pipeline. Space is made orthogonally relative to direction of first on-coming air flow tangentially in direction of first on-coming air flow.
EFFECT: improved efficiency of energy conversion.
23 cl, 14 dwg
FIELD: heat power engineering.
SUBSTANCE: invention can be used for heating and hot water supply of different buildings. Proposed wind-heat generator contains water heat accumulator, windmill, bevel gear train (transmission), mechanical heater in form of agitator with movable blades each pair of which is made to centrifugal governor scheme (Watt governor). Wind heat generator is furnished additionally with second bevel gear train (transmission) rotating in opposite direction relative to first bevel gear train, each train being provided with equal number of agitators with movable blades.
EFFECT: increased efficiency of utilization of wind energy in wider range of wind velocities, improved reliability of heat generator and reduced cost of thermal energy.
FIELD: wind power engineering.
SUBSTANCE: invention relates to wind plants for direct conversion of wind energy into thermal energy. Proposed wind thermal plant contains windwheel with rotary blades and friction heat generator with heat exchanger. Novelty is that heat generator is made in form of conical drum with ribbed surface and rotor is provided with friction lining being installed on shaft of windwheel. Pressure of lining onto drum surface depends on wind head. Heat exchanger is provided with air intake. Windwheel is provided with speed and vibration protective device.
EFFECT: simplified design, improved reliability in operation within wide range of wind loads with provision of ventilation of heat rooms.
2 cl;, 4 dwg