CN105406668A - Disk type generator capable of changing power - Google Patents
Disk type generator capable of changing power Download PDFInfo
- Publication number
- CN105406668A CN105406668A CN201510980229.0A CN201510980229A CN105406668A CN 105406668 A CN105406668 A CN 105406668A CN 201510980229 A CN201510980229 A CN 201510980229A CN 105406668 A CN105406668 A CN 105406668A
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- Prior art keywords
- stator
- power
- electric machine
- type electric
- output
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Control Of Eletrric Generators (AREA)
- Wind Motors (AREA)
Abstract
A disk type generator capable of changing power is disclosed. The disk type generator comprises a generator shaft; one end of the generator shaft is connected with a power input apparatus; the disk type generator also comprises disk type motors, a control signal collection and feedback unit and a control unit; the number of the disk type motors is at least two; each disk type motor comprises a stator and a rotor; the stators and the rotors are alternatively arranged on the generator shaft in a sleeving manner; the disk type motors are arranged on the generator shaft in a sleeving manner; the stators of the disk type motors are provided with electric power output ends; the electric power output ends are connected with output cables and externally connected with a power grid through the output cables; a control switch is arranged between the disk type motors and the output cables; the input end of the control signal collection and feedback unit is connected with the output ends of the disk type motors; the output end of the control signal collection and feedback unit is connected with the input end of the control unit; and the output end of the control unit is connected with the control switch. The disk type generator is simple in structure, and capable of stably outputting voltage and automatically changing the output power according to changes of external conditions at the right moment.
Description
Technical field
The present invention relates to electrical generator fields, espespecially a kind of Variable power disk generator.
Background technology
The energy is the material base of survival and development of mankind, is key factor and the strategic resource of supporting development of world economy.History and the energy development of human social development and utilize level closely related.The exploitation of each novel energy all makes the development of human economy produce qualitative leap.In 21 century, energy resource structure is also just breeding great transformation.Twice worldwide oil crisis in 20th century, people being recognized seek and develop can the importance of other energy of substitute fossil fuels and urgency, and the development of World Economics also proposes the requirement of stable sustainable growth to energy supply.
Along with the develop rapidly of modern industry, on the earth, available conventional energy resource is increasingly deficient.In order to realize the sustainable development of the energy, countries in the world are all at Devoting Major Efforts To Developing new and renewable sources of energy.The water flow energy of rivers,lakes and seas, ubiquitous wind energy, as a kind ofly can regenerating, pollution-free, the inexhaustible energy, be called " green energy resource " by people, be day by day subject to the attention of world many countries.Compare other conventional energy resources, water flow energy and wind energy have that energy density is low but total reserves are large, localized, renewable, storage capacity can not reduce along with the conversion of energy and use, energy is with region time variations, one-time investment is large, but it is free from environmental pollution, do not take good farmland, environmental friendliness, the whole world is feasible, the feature that can fully utilize.Large-scale utilization stream energy and wind power generation become minimizing air pollution, alleviate the effective measures of energy shortage problem.The use of new forms of energy, especially the use of convection current energy (water flow energy and wind energy), is about to become the maximum new energy technology of development potentiality, because it is different from fossil energy, be a kind of local resource of permanent a large amount of existence, energy supply steady in a long-term can be provided for us; There is no fuel risk simultaneously, more there is no fuel price risk, do not produce carbon emission.
To flow the tidal current generator of energy generator, in the middle of tidal current energy generating system, the flow velocity of trend is in constantly change.As shown in Figure 1, under each flow velocity, there is a maximum power point (mpp), obtain maximum at this capacitation coefficient, under different in flow rate power maximum line we be called maximum power curve.Like this we by regulate rotational speed of water turbine, just can make under water unit operation on Maximum Power Output curve.
How to regulate rotational speed of water turbine to make it mate with ocean current flow velocity, to make unit Maximum Power Output under water, mainly contain two kinds of methods at present: mechanical adjustment and load regulation.
Mechanical adjustment is mainly hydrodynamically set out, when flow velocity is too high, the rotating speed of the hydraulic turbine also can increase thereupon, we can change propeller pitch angle by mechanical adjustment, thus change ocean current to the angle of attack of blade, thus rotational speed of water turbine is mated with ocean current flow velocity, make hydraulic turbine Maximum Power Output.
Load regulation is mainly from power electronic technology angle, and when ocean current flow velocity is too high, the rotating speed of the hydraulic turbine can increase thereupon, if want to make system cloud gray model on maximum power curve, can carry out load regulation.In power electronics load regulation, we can by the input of regulating load, thus rotational speed of water turbine is reached with ocean current flow velocity mate, and make underwater power generator operate on maximum power curve, we just can obtain marine tidal-current energy to greatest extent like this.
As the restriction that wind-driven generator output voltage is subject to wind speed: when wind speed hour, blade rotating speed is slack-off, and generator output voltage also declines (even lower than rated value) thereupon; When wind speed is large, blade rotating speed accelerates, and generator output voltage and power also rise with it, when wind speed overrate, if do not taked step-down and the measure of limit power, will damage generator, blade, controller etc.Roughly take following measure at present: 1. variable pitch mode, when wind speed increases, blade rotates along self direction of principal axis, changes the angle of attack windward of blade, reaches the effect reducing and absorb wind energy; 2. become empennage mode, change the angle between empennage and paddle when wind speed increases, to reduce the front face area of paddle, reach the effect reducing and absorb wind energy; 3. limit power mode, by controller or other electronic installation, make generator discontinuous, reach regulated output voltage and the object limiting power output.All this kind, its object is exactly go to cater to limited " rated power " value of generator by limited way, consequently increases a lot of control unit out of the void, drastically increases development cost, also increase the unreliable factor of system, the operating mode that generator can be run promotes to some extent.
Summary of the invention
For solving the problem, the invention provides a kind of structure simple, having regulated output voltage and can change according to external condition the Variable power disk generator in good time automatically changing power output.
For achieving the above object, the technical solution used in the present invention is: a kind of Variable power disk generator, comprise generator shaft, one end of described generator shaft is connected with power input device, also comprise disc type electric machine, for collecting control signal collection and the feedback unit of disc type electric machine output current, for controlling the control unit of disc type electric machine access electrical network, described disc type electric machine is at least two, described disc type electric machine comprises stator, rotor, described stator, rotor is alternately socketed on generator shaft, described disc type electric machine is set on generator shaft, disk type electric machine stator is provided with power output end, power output end is connected with output cable and by output cable outside electric power network, control switch is provided with between described disc type electric machine and output cable, described control signal collection is connected with the power output end of disc type electric machine with the input of feedback unit, control signal collection is connected with the input of control unit with the output of feedback unit, the output of described control unit is connected with control switch.
Particularly, described stator comprises stator rotary disc, the surface uniform of the both sides of stator rotary disc is provided with coil, the center of stator rotary disc is provided with stator shaft hole, bearing is provided with in stator shaft hole, described stator is arranged on generator shaft by bearing, described rotor comprises rotor rotating disk, rotor disc surfaces is evenly provided with permanent magnet, described permanent magnet is through on rotor rotating disk, two magnetic levels of permanent magnet are exposed to the two ends of rotor rotating disk respectively, and the magnetic pole being positioned at the permanent magnet of rotor rotating disk the same side is arranged alternately, rotor disc surfaces is provided with axis hole, rotor is fixedly installed on motor shaft by axis hole.
Particularly, in each stator, the output of each coil is connected and is connected to power output end, or in each stator each coil output-parallel and be connected to power output end.
Particularly, the quantity of described permanent magnet is corresponding identical with the quantity of coil.
Particularly, described power input device is water wheels or wind wheel.
Particularly, in described stator, the shape between coil is identical or not identical.
Particularly, the power of described disc type electric machine is identical or not identical.
Beneficial effect of the present invention is: the present invention by arranging at least two disc type electric machines on generator shaft, according to extraneous flow rate of water flow or wind speed, the output current of each disc type electric machine is collected by control signal collection and feedback unit, and feed back to control unit, control unit controls the opening and closing of corresponding control switch according to calculating current output variable, thus the number that increase or minimizing disc type electric machine are incorporated to, by increasing or reduce the disk generator being incorporated to one or more equal-wattage or different capacity, thus obtain the way of different output power, generator is made to become variable power generator, generator is allowed to go to go to meet the requirement of system to power output according to actual conditions, thus eliminate the monitoring and controlling unit of system complex, make generator system safety and reliability, moment is in optimum Working, there is staring torque little, from the generator power required for motion tracking adaptive system, rated power operation scope is large, truly achieve full working scope to run, greatly improve wind energy utilization, it is the hardware technology basis greatly developing distributed energy, it will be future source of energy exploitation widening roadbed, open new situation.
Accompanying drawing explanation
Fig. 1 is generator power of the assembling unit output characteristics figure under different rotating speeds;
Fig. 2 is structural representation of the present invention;
Fig. 3 stator rotary disc structural representation;
Fig. 4 is rotor turntable structure schematic diagram.
Drawing reference numeral illustrates: 1-generator shaft; 2-power input device; 3-control signal gathers and feedback unit; 4-control unit; 5-control switch; 6-stator; 61-stator rotary disc; 62-coil; 63-stator shaft hole; 64-bearing; 7-rotor; 71-rotor rotating disk; 72-permanent magnet; 73-rotor shaft hatch; 8-output cable; 9-electrical network; A, B, N-disc type electric machine.
Embodiment
Refer to shown in Fig. 2-4, the present invention is about a kind of Variable power disk generator, comprise generator shaft 1, one end of described generator shaft 1 is connected with power input device 2, also comprise disc type electric machine, for collecting control signal collection and the feedback unit 3 of disc type electric machine output current, for controlling the control unit 4 of disc type electric machine access electrical network, described disc type electric machine is at least two, described disc type electric machine comprises stator 6, rotor 7, described stator 6, rotor 7 is alternately socketed on generator shaft 1, disk type electric machine stator 6 is provided with power output end, power output end is connected with output cable 8 and by output cable 8 outside electric power network 9, control switch 5 is provided with between described disc type electric machine and output cable 8, described control signal collection is connected with the power output end of disc type electric machine with the input of feedback unit 3, control signal collection is connected with the input of control unit 5 with the output of feedback unit 3, the output of described control unit 5 is connected with control switch 5.
Compared to existing technology, the present invention by arranging at least two disc type electric machines on generator shaft 1, according to extraneous flow rate of water flow or wind speed, the output current of each disc type electric machine is collected by control signal collection and feedback unit 3, and feed back to control unit 4, control unit 4 controls the opening and closing of corresponding control switch 5 according to calculating current output variable, thus the number that increase or minimizing disc type electric machine are incorporated to, by increasing or reduce the disc type electric machine being incorporated to one or more equal-wattage or different capacity, thus obtain the way of different output power, generator is made to become variable power generator, generator is allowed to go to go to meet the requirement of system to power output according to actual conditions, thus eliminate the monitoring and controlling unit of system complex, make generator system safety and reliability, moment is in optimum Working, there is staring torque little, from the generator power required for motion tracking adaptive system, rated power operation scope is large, truly achieve full working scope to run, greatly improve wind energy utilization, it is the hardware technology basis greatly developing distributed energy, it will be future source of energy exploitation widening roadbed, open new situation.
Particularly, described stator 6 comprises stator rotary disc 61, the surface uniform of the both sides of stator rotary disc 61 is provided with coil 62, the center of stator rotary disc 61 is provided with stator shaft hole 63, bearing 64 is provided with in stator shaft hole 63, described stator 6 is arranged on generator shaft 1 by bearing 64, described rotor 7 comprises rotor rotating disk 71, rotor rotating disk 71 surface uniform is provided with permanent magnet 72, described permanent magnet 72 is through on rotor rotating disk 71, two magnetic levels of permanent magnet 72 are exposed to the two ends of rotor rotating disk 71 respectively, and the magnetic pole being positioned at the permanent magnet 72 of rotor rotating disk 71 the same side is arranged alternately, rotor rotating disk 71 surface is provided with rotor shaft hatch 73, rotor 7 is fixedly installed on motor shaft by rotor shaft hatch 73.
Adopt such scheme, because stator 6 coil 62 is separately positioned on the surface of stator rotary disc 61 both sides, in rotor 7, permanent magnet 72 is through on rotor rotating disk 71, a rotor rotating disk 71 can be shared in the disc type electric machine be then disposed adjacent, do not need yoke and take full advantage of rotor 7 magnetic, thus making of the present invention simple and compact for structure, volume is little and lightweight, and efficiency is high.
Particularly, in each stator 6, the output of each coil 62 is connected and is connected to power output end, or in each stator 6 each coil 62 output-parallel and be connected to power output end.
Particularly, the quantity of described permanent magnet 72 is corresponding identical with the quantity of coil 62.
Particularly, described power input device 2 is water wheels or wind wheel.
Particularly, in described stator 6, the shape between coil 62 is identical or not identical.
Particularly, the power of described disc type electric machine is identical or not identical.
Below by wind power generation, as specific embodiment, the invention will be further described.
When wind speed is at a certain rated value Va, system need realize maximal wind-power tracking and control, now, maximum power Pa and just met the rated value of disc type electric machine A by the rotational speed omega 0 that power input device 2 wind wheel passes to generator shaft 1, if Va continues constant, namely wind speed is constant, then ω 0 continues constant, the external power output of disc type electric machine A will be Pa, i.e. P=Pa always, disc type electric machine A rated speed ω=ω 0; When wind speed is at the above Vb of rated value, Pa and ω 0 will be increased to actual value Pb and ω 1 gradually under the effect of wind speed, now, and Pb>Pa, ω 1> ω 0.If the output current of the disc type electric machine A that control signal collection and feedback unit 3 record larger than the output-current rating of disc type electric machine A more than 40%, now control unit 4 action, the control switch 5 controlling disc type electric machine B is closed makes disc type electric machine B be incorporated to, due to being incorporated to of disc type electric machine B, the former numerical value reverting to ω 0 of ω 1 under strong magnetic damping effect, when extraneous wind speed is VB, gross output P=Pa+Pb, by increasing the way of rated power, serve the wind energy absorbing and increase, thus the single disc type electric machine A unit power output in this group of motors is maintained rated value, when wind speed rated value at Vn time, same condition and mechanism, be incorporated to disc type electric machine N, total output is P=Pa+Pb++Pn, so the rest may be inferred ... otherwise, if extraneous wind speed reduces, the real work rotating speed that wind wheel imports generator shaft into will be less than the rated speed of disc type electric machine A, i.e. ω 1< ω 0.If it is low by about 70% that control signal collection and feedback unit 3 record real work current ratio rated current, then control unit 4 action, opens the control switch 5 of the disc type electric machine of correspondence, until the operating mode of ω=ω 0.The rest may be inferred, and generator system achieves the way by changing rated power, absorbs whole wind energies, under also making generating set always work in rated condition.
Above execution mode is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that the common engineers and technicians in this area make technical scheme of the present invention and improvement, all should fall in protection range that claims of the present invention determine.
Claims (7)
1. a Variable power disk generator, comprise generator shaft, one end of described generator shaft is connected with power input device, it is characterized in that, also comprise disc type electric machine, for collecting control signal collection and the feedback unit of disc type electric machine output current, for controlling the control unit of disc type electric machine access electrical network, described disc type electric machine is at least two, described disc type electric machine comprises stator, rotor, described stator, rotor is alternately socketed on generator shaft, described disc type electric machine is set on generator shaft, disk type electric machine stator is provided with power output end, power output end is connected with output cable and by output cable outside electric power network, control switch is provided with between described disc type electric machine and output cable, described control signal collection is connected with the power output end of disc type electric machine with the input of feedback unit, control signal collection is connected with the input of control unit with the output of feedback unit, the output of described control unit is connected with control switch.
2. Variable power disk generator according to claim 1, it is characterized in that, described stator comprises stator rotary disc, the surface uniform of the both sides of stator rotary disc is provided with coil, the center of stator rotary disc is provided with stator shaft hole, bearing is provided with in stator shaft hole, described stator is arranged on generator shaft by bearing, described rotor comprises rotor rotating disk, rotor disc surfaces is evenly provided with permanent magnet, described permanent magnet is through on rotor rotating disk, two magnetic levels of permanent magnet are exposed to the two ends of rotor rotating disk respectively, and the magnetic pole being positioned at the permanent magnet of rotor rotating disk the same side is arranged alternately, rotor disc surfaces is provided with axis hole, rotor is fixedly installed on motor shaft by axis hole.
3. Variable power disk generator according to claim 2, is characterized in that, in each stator, the output of each coil is connected and is connected to power output end, or in each stator each coil output-parallel and be connected to power output end.
4. Variable power disk generator according to claim 2, is characterized in that, the quantity of described permanent magnet is corresponding identical with the quantity of coil.
5. Variable power disk generator according to claim 1, is characterized in that, described power input device is water wheels or wind wheel.
6. Variable power disk generator according to claim 1, is characterized in that, in described stator, the shape between coil is identical or not identical.
7. Variable power disk generator according to claim 1, is characterized in that, the power of described disc type electric machine is identical or not identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980229.0A CN105406668A (en) | 2015-12-24 | 2015-12-24 | Disk type generator capable of changing power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980229.0A CN105406668A (en) | 2015-12-24 | 2015-12-24 | Disk type generator capable of changing power |
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| Publication Number | Publication Date |
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| CN105406668A true CN105406668A (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510980229.0A Pending CN105406668A (en) | 2015-12-24 | 2015-12-24 | Disk type generator capable of changing power |
Country Status (1)
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| CN (1) | CN105406668A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190292A1 (en) * | 2016-05-04 | 2017-11-09 | 余仁伟 | Efficient laminated coreless generator and manufacturing method therefor |
| CN109450313A (en) * | 2018-07-27 | 2019-03-08 | 浙江瑞枫新能源科技有限公司 | Modular motor with Split type casing |
| CN110739824A (en) * | 2018-07-20 | 2020-01-31 | 黄思伦 | Outer rotor generator with ox horn type iron core |
| CN111835171A (en) * | 2019-04-19 | 2020-10-27 | 黄思伦 | Motor/motor-generator with multiple permanent magnet pairs consequent outer rotor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10389218B2 (en) | 2016-05-04 | 2019-08-20 | Renwei YU | Efficient laminated coreless generator and manufacturing method thereof |
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| CN110739824A (en) * | 2018-07-20 | 2020-01-31 | 黄思伦 | Outer rotor generator with ox horn type iron core |
| CN109495034A (en) * | 2018-07-27 | 2019-03-19 | 浙江瑞枫新能源科技有限公司 | Generator and its progress control method with multiple generator units |
| CN109495037A (en) * | 2018-07-27 | 2019-03-19 | 浙江瑞枫新能源科技有限公司 | Motor and its progress control method with multiple driving units |
| CN109495035A (en) * | 2018-07-27 | 2019-03-19 | 浙江瑞枫新能源科技有限公司 | Generator and its progress control method with multiple generator units |
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| CN109450313A (en) * | 2018-07-27 | 2019-03-08 | 浙江瑞枫新能源科技有限公司 | Modular motor with Split type casing |
| CN109495034B (en) * | 2018-07-27 | 2020-12-29 | 浙江瑞枫新能源科技有限公司 | Generator having a plurality of power generating units and operation control method thereof |
| CN109450312B (en) * | 2018-07-27 | 2021-04-06 | 浙江瑞枫新能源科技有限公司 | Generator with multiple power generating units |
| CN111835171A (en) * | 2019-04-19 | 2020-10-27 | 黄思伦 | Motor/motor-generator with multiple permanent magnet pairs consequent outer rotor |
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Application publication date: 20160316 |