CN102710200B - Directly-drive wind power generation system composed of high temperature superconductive excitation magnetic flux switchover motor - Google Patents
Directly-drive wind power generation system composed of high temperature superconductive excitation magnetic flux switchover motor Download PDFInfo
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- CN102710200B CN102710200B CN201210160986.XA CN201210160986A CN102710200B CN 102710200 B CN102710200 B CN 102710200B CN 201210160986 A CN201210160986 A CN 201210160986A CN 102710200 B CN102710200 B CN 102710200B
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Abstract
The invention provides a directly-drive wind power generation system composed of a high temperature superconductive excitation magnetic flux switchover motor. The directly-drive wind power generation system comprises a wind turbine, a high temperature superconductive excitation magnetic flux switchover motor, an uncontrollable rectifier module, a battery pack module, a direct current converter module, an inverter module, a grid-connected transformer, an operation mode control module and a central control unit. The directly-drive wind power generation system is small in volume, light in weight, high in efficiency, multiple in operation mode and good in an adaptability; as the high temperature superconductive excitation magnetic flux switchover motor is adopted as a generator, the characteristics that a high temperature superconductive winding is adaptive to a direct current is brought into play, and the rotational connection necessary for a conventional rotor excitation type high temperature superconductive motor is avoided; the directly-drive wind power generation system is simple in structure; a generator stator adopts a modularization structure, thereby being convenient for transportation and on-site installation; as the directly-drive wind power generation system can run in a switch magnetic reluctance motor generation mode, the phenomenon of quench of the high temperature superconductive material is prevented effectively; and the reliability of the system is improved effectively.
Description
Technical field
The invention belongs to technical field of wind power generation, is the direct-driving type wind power generation system that a kind of high-temperature superconducting motor is formed.
Background technology
Along with the whole society's giving more sustained attention the energy and environmental problem, the exploitation of regenerative resource are just presenting the trend of accelerated development.One of regenerative resource that the Application and Development technology grasped as the current mankind of wind energy is the most ripe, the advantages such as, distributed areas wide, safety and environmental protection large by means of its exploitable deposit, play an important role in Sustainable Socioeconomic Development.Take a broad view of the wind generator system having put into operation at present and researched and developed both at home and abroad, substantially can be classified as two large classes.The high speed winds electric system that the first kind is is intermediate link with mechanical speed-increasing gear box.Usually, the wind energy conversion system driven by wind energy is operated in lower rotating speed (tens revs/min), and traditional synchronous or asynchronous generator limits due to number of poles, rotating speed is all higher, therefore the type system must adopt multistage gear case to carry out speedup to wind energy conversion system rotating speed, makes it the rated speed close to asynchronous machine.But step-up gear not only volume is large, heavy, and failure rate is higher, needing often to safeguard, is link the weakest in wind generator system; Equations of The Second Kind is the directly-driving wind power generation system in recent years occurred, eliminates speed increasing gear, therefore has the advantages such as efficiency is high, dynamic response is fast, maintenance cost is low.But, directly drive generator usually to work under the low speed of tens turns per minute, for ensureing that its output voltage and frequency are in normal scope, generator needs to adopt larger rotor diameter and more number of pole-pairs, volume is large, quality weight, adds difficulty to the design of generator, manufacture, transport and installation etc.
Visible, high-speed wind power electricity generation system and directly-driving wind power generation system have respective pluses and minuses: the advantages such as maturation, current transformer control capability are less, variable-speed operation wider range that the former possesses skills, but the use of gear box and rotor ring adds the probability that mechanical breakdown occurs; The latter has that efficiency is high, without advantages such as step-up gears, but large-scale direct wind-driven generator is bulky and heavy, makes the transport of unit, installs difficulty.And the air-gap field directly driving generator regulates difficulty, its output voltage is very large with the fluctuation of wind speed, add the two-way PWM grid-connected converter of total power control difficulty and adopt the cost of device for high-power power electronic.Therefore, by combining without step-up gear of the output voltage stabilization of high speed winds electric system and directly driven wind-powered system, the advantage of both collection, exploitation is little, lightweight without step-up gear, volume, and output voltage amplitude substantially remains unchanged with the fluctuation of wind speed and maybe can stablize within the specific limits, thus make to control simple direct-driving type wind power generation system, become the study hotspot of current high-power wind power generation system.
Summary of the invention
The technical problem to be solved in the present invention is: existing large directly driven permanent magnet wind generating is bulky, heavy, makes the transport of unit, installs difficulty; And the air-gap field of permanent magnet direct-drive generator regulates difficulty, its output voltage is very large with the fluctuation of wind speed, add the two-way PWM grid-connected converter of total power control difficulty and adopt the cost of device for high-power power electronic; One is needed to overcome existing permanent magnet direct-drive wind generator system drawback, can high power density, high efficiency, control convenience, stable direct-driving type wind power generation system.
Technical scheme of the present invention is: the direct-driving type wind power generation system that a kind of high-temperature superconductor magnetic flux switching motor is formed, comprise wind energy conversion system, uncontrollable rectifier module, battery module, DC converting module, inverter module, grid-connected transformer, also comprise high-temperature superconductor magnetic flux switching motor, operational mode control module and central control unit; Wind energy conversion system connects high-temperature superconductor magnetic flux switching motor, uncontrollable rectifier module, battery module, inverter module, be connected between high-temperature superconductor magnetic flux switching motor and grid-connected transformer, DC converting module is connected across battery module two ends, operational mode control module is connected between high-temperature superconductor magnetic flux switching motor and battery module, and central control unit connects battery module, inverter module, wind energy conversion system, operational mode control module and DC converting module respectively; Operational mode control module is composed in parallel by switching magnetic-resistance generator operation control module, high-temperature superconductor excitation generator operation control module, armature winding is connected with switching magnetic-resistance generator operation control module, high-temperature superconductor excitation winding is connected with high-temperature superconductor excitation generator operation control module, battery module connecting valve magnetic resistance generator operation control module and high-temperature superconductor excitation generator operation control module, and electric energy is provided.
High-temperature superconductor magnetic flux switching motor is made up of armature winding, high-temperature superconductor excitation winding, field spider and modular stator, and armature winding, high-temperature superconductor excitation winding are all positioned at static stator side.
The armature winding of high-temperature superconductor magnetic flux switching motor of the present invention can be conventional armature winding or high-temperature superconductor winding.
The present invention possesses high-temperature superconductor excitation generator operation and switching magnetic-resistance generator operation two kinds of operational modes:
(1), during the work of high-temperature superconductor excitation generating operating mode, the rotor speed omega of high-temperature superconductor magnetic flux switching motor is between lower rotation speed limit value ω
minwith rotating speed higher limit ω
maxbetween, central control unit shutdown switch magnetic resistance generator operation control module, open high-temperature superconductor excitation generator operation control module, wind energy conversion system drives the rotor of high-temperature superconductor magnetic flux switching motor to rotate with angular velocity omega, by electromagnetic coupled effect, be electric energy by wind energy transformation, the electric energy that high-temperature superconductor magnetic flux switching motor sends, uncontrollable rectifier module is transferred to by stator armature winding, AC energy is converted to direct current energy, under the control of central control unit, AC energy is converted to again through battery module and inverter module, through grid-connected transformer by delivery of electrical energy to electrical network.In the process, central control unit detects the rotor velocity ω of high-temperature superconductor magnetic flux switching motor in real time, when ω is lower than the rated angular velocity ω of high-temperature superconductor magnetic flux switching motor
e(ω
min< ω
e< ω
max) time, the terminal voltage U of grid-connected transformer is lower than its rated voltage U
e, under the control of central control unit, high-temperature superconductor excitation generator operation control module increases exciting current I
f, make the terminal voltage U of grid-connected transformer reach its rated voltage U
e; When ω is higher than the rated angular velocity ω of high-temperature superconductor magnetic flux switching motor
etime, the terminal voltage U of grid-connected transformer is greater than its rated voltage U
e, under the control of central control unit, high-temperature superconductor excitation generator operation control module reduces exciting current I
f, make the terminal voltage U of grid-connected transformer reach its rated voltage U
e.Therefore, system can keep the terminal voltage amplitude stability of grid-connected transformer, can reduce the control difficulty of inverter module, and due to excitation winding be high-temperature superconductor winding, its excitation loss, close to zero loss, improves the efficiency of system.
(2), during the work of switching magnetic-resistance generating operating mode, central control unit turns off high-temperature superconductor excitation generator operation control module, and opens switching magnetic-resistance generator operation control module, and battery module provides rated exciting current I for it
fe.Because high-temperature superconductor excitation winding is now disconnected, the structure of generator is also corresponding becomes switched reluctance machines structure from high-temperature superconductor magnetic flux switching motor structure.Now, the rotor speed omega of motor is lower than its lower rotation speed limit value ω
minthe rotor of wind energy conversion system driving switch reluctance motor rotates with angular velocity omega, by electromagnetic coupled effect, be electric energy by wind energy transformation, the electric energy that switched reluctance machines sends, is transferred to uncontrollable rectifier module by stator armature winding, AC energy is converted to direct current energy, under the control of central control unit, then be converted to the specified terminal voltage U reaching grid-connected transformer through DC converting module and inverter module
eaC energy, through grid-connected transformer by delivery of electrical energy to electrical network.Under switching magnetic-resistance generating operating mode mainly runs on breeze conditions, wind field wind speed is now lower, makes the rotor velocity ω of high-temperature superconductor magnetic flux switching motor lower than its design lower limit ω
min, thus the terminal voltage U of grid-connected transformer is far below its rated value U
e, the amplitude that therefore must increase substantially exciting current could keep the terminal voltage of grid-connected transformer to be stabilized in its rated value U
e, and excessive exciting current very easily causes high-temperature superconductor excitation winding generation quench phenomenon, has a strong impact on the performance of high temperature superconducting materia, systematic evaluation, to switching magnetic-resistance generating operating mode, effectively can avoid the generation of quench phenomenon.
High temperature superconducting materia is introduced flux switch motor as excitation winding by the present invention, both the characteristic that high-temperature superconductor winding is applicable to direct current had been played, turn avoid necessary in conventional rotors excitation type high-temperature superconducting motor being rotationally connected, and then it is simple to propose a kind of structure, volume is little, lightweight, the direct-driving type wind power generation system of high efficiency high-temperature superconductor magnetic flux switching motor and formation thereof, effectively can reduce the volume and weight of direct-driving type wind power system, and output voltage can be made to keep stable, reduce the control difficulty of system, the present invention simultaneously can run on high-temperature superconductor excitation generator operation and switching magnetic-resistance generator operation two kinds of operational modes, improve system reliability.
Accompanying drawing explanation
Fig. 1 is present system structural representation.
Fig. 2 is high-temperature superconductor magnetic flux switching motor structural representation of the present invention.
Embodiment
As Fig. 1, the present invention includes wind energy conversion system 1, high-temperature superconductor magnetic flux switching motor 2, uncontrollable rectifier module 3, battery module 4, DC converting module 11, inverter module 5, grid-connected transformer 6, operational mode control module 10 and central control unit 9, wind energy conversion system 1 connects high-temperature superconductor magnetic flux switching motor 2, uncontrollable rectifier module 3, battery module 4, inverter module 5, be connected between high-temperature superconductor magnetic flux switching motor 2 and grid-connected transformer 6, DC converting module 11 is connected across battery module 4 two ends, operational mode control module 10 is connected between high-temperature superconductor magnetic flux switching motor 2 and battery module 4, central control unit 9 connects battery module 4 respectively, inverter module 5, wind energy conversion system 1, operational mode control module 10 and DC converting module 11, wherein high-temperature superconductor magnetic flux switching motor 2 is made up of armature winding 2.1, high-temperature superconductor excitation winding 2.2, field spider 2.3 and modular stator 2.4, high-temperature superconductor excitation winding 2.2 connects high-temperature superconductor excitation generator operation control module 8, and armature winding 2.1 connects switching magnetic-resistance generator operation control module 7, operational mode control module 10 is composed in parallel by switching magnetic-resistance generator operation control module 7, high-temperature superconductor excitation generator operation control module 8, armature winding 2.1 is connected with switching magnetic-resistance generator operation control module 7, high-temperature superconductor excitation winding 2.2 is connected with high-temperature superconductor excitation generator operation control module 8, battery module 4 connecting valve magnetic resistance generator operation control module 7 and high-temperature superconductor excitation generator operation control module 8, and electric energy is provided.
For a set of direct-driving type wind power generation system based on high-temperature superconductor magnetic flux switching motor, wind energy conversion system 1 is connected with high-temperature superconductor magnetic flux switching motor 2, rectifier module 3 adopts three-phase diode uncontrollable rectifier bridge, inverter module 5 adopts IGBT to be power component, and central control unit 9 adopts DSP microprocessor.
Operational mode of the present invention comprises:
1). high-temperature superconductor excitation generating operating mode:
The rotor speed omega of high-temperature superconductor magnetic flux switching motor is between lower rotation speed limit value ω
minwith rotating speed higher limit ω
maxbetween time, the circulation path of the electrical power that wind energy is changed is: the grid-connected transformer 6 of high-temperature superconductor magnetic flux switching motor 2-uncontrollable rectifier module 3-battery module 4-inverter module 5-, by delivery of electrical energy to electrical network.
2). switching magnetic-resistance generating operating mode:
The rotor speed omega of switched reluctance machines is lower than lower rotation speed limit value ω
min, the circulation path of the electrical power that wind energy is changed is: the grid-connected transformer 6 of switched reluctance machines 2-uncontrollable rectifier module 3-DC converting module 11-inverter module 5-, by delivery of electrical energy to electrical network.
Feature of the present invention eliminates the necessary rotation of general wind power generation high-temperature superconducting motor to connect, adopt high-temperature superconductor magnetic flux switching motor as generator, its advantage is mainly reflected in two aspects, on the one hand, high-temperature superconductor excitation winding and armature winding are all placed in stator side, both the characteristic that high-temperature superconductor winding is applicable to direct current had been played, turn avoid necessary in conventional rotors excitation type high-temperature superconducting motor being rotationally connected, and, the high-intensity magnetic field characteristic of high temperature superconducting materia effectively can improve the power density of generator, thus reduce the weight of whole wind power system, simultaneously, its modular stator structure is also convenient to the transport of unit and the Installation and Debugging at scene, on the other hand, because stator side has high-temperature superconductor excitation winding and armature winding double winding, therefore switched reluctance machines power generation mode can be run on when gentle breeze, effectively can prevent the generation of high temperature superconducting materia quench phenomenon, improve the reliability of system.
Claims (3)
1. the direct-driving type wind power generation system of high-temperature superconductor magnetic flux switching motor formation, comprise wind energy conversion system (1), uncontrollable rectifier module (3), battery module (4), DC converting module (11), inverter module (5), grid-connected transformer (6), it is characterized in that also comprising high-temperature superconductor magnetic flux switching motor (2), operational mode control module (10) and central control unit (9), wind energy conversion system (1) connects high-temperature superconductor magnetic flux switching motor (2), uncontrollable rectifier module (3), battery module (4), inverter module (5), be connected between high-temperature superconductor magnetic flux switching motor (2) and grid-connected transformer (6), DC converting module (11) is connected across battery module (4) two ends, operational mode control module (10) is connected between high-temperature superconductor magnetic flux switching motor (2) and battery module (4), central control unit (9) connects battery module (4) respectively, inverter module (5), wind energy conversion system (1), operational mode control module (10) and DC converting module (11), operational mode control module (10) is composed in parallel by switching magnetic-resistance generator operation control module (7), high-temperature superconductor excitation generator operation control module (8), armature winding (2.1) is connected with switching magnetic-resistance generator operation control module (7), high-temperature superconductor excitation winding (2.2) is connected with high-temperature superconductor excitation generator operation control module (8), battery module (4) connecting valve magnetic resistance generator operation control module (7) and high-temperature superconductor excitation generator operation control module (8), and electric energy is provided.
2. the direct-driving type wind power generation system of high-temperature superconductor magnetic flux switching motor formation according to claim 1, it is characterized in that high-temperature superconductor magnetic flux switching motor (2) is made up of armature winding (2.1), high-temperature superconductor excitation winding (2.2), field spider (2.3) and modular stator (2.4), armature winding (2.1), high-temperature superconductor excitation winding (2.2) are all positioned at static stator side.
3. the direct-driving type wind power generation system of high-temperature superconductor magnetic flux switching motor formation according to claim 2, is characterized in that armature winding (2.1) is for conventional armature winding or high-temperature superconductor winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210160986.XA CN102710200B (en) | 2012-05-17 | 2012-05-17 | Directly-drive wind power generation system composed of high temperature superconductive excitation magnetic flux switchover motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210160986.XA CN102710200B (en) | 2012-05-17 | 2012-05-17 | Directly-drive wind power generation system composed of high temperature superconductive excitation magnetic flux switchover motor |
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| Publication Number | Publication Date |
|---|---|
| CN102710200A CN102710200A (en) | 2012-10-03 |
| CN102710200B true CN102710200B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210160986.XA Expired - Fee Related CN102710200B (en) | 2012-05-17 | 2012-05-17 | Directly-drive wind power generation system composed of high temperature superconductive excitation magnetic flux switchover motor |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825387B (en) * | 2013-10-09 | 2016-05-11 | 中国石油大学(华东) | High-temperature superconductor magnetic flux switching motor low-temperature cooling system |
| CN104113251B (en) * | 2014-06-17 | 2017-05-03 | 曲阜师范大学 | Wind power generation-used modular electro-magnetic flux switching power generator |
| CN105356679B (en) * | 2015-11-09 | 2017-11-17 | 江苏大学 | The design method of magnetic flux switching external rotor electric machine based on electric heating bidirectional couple |
| CN105634247A (en) * | 2016-01-26 | 2016-06-01 | 中国石油大学(华东) | Six-phase static sealing high-temperature superconducting motor |
| CN111863374A (en) * | 2019-04-24 | 2020-10-30 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | High-temperature superconducting uninsulated magnet |
| CN110765640B (en) * | 2019-11-05 | 2022-05-10 | 中国船舶重工集团海装风电股份有限公司 | Method, system and equipment for calculating effective wind speed of rotor |
| CN113048010B (en) * | 2021-03-25 | 2022-03-22 | 南方电网电力科技股份有限公司 | Control method of superconducting fan |
| CN114938087B (en) * | 2022-06-06 | 2024-04-23 | 河北工业大学 | High-frequency transformer integrated two-module magnetic flux switching motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997047878A1 (en) * | 1996-06-08 | 1997-12-18 | Industrial Research Limited | Wind turbines |
| US7233079B1 (en) * | 2005-10-18 | 2007-06-19 | Willard Cooper | Renewable energy electric power generating system |
| CN101527498A (en) * | 2008-03-06 | 2009-09-09 | 通用电气公司 | Systems involving superconducting direct drive generators for wind power applications |
| CN101532472A (en) * | 2008-03-13 | 2009-09-16 | 通用电气公司 | Superconducting homopolar alternator for wind power applications |
-
2012
- 2012-05-17 CN CN201210160986.XA patent/CN102710200B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997047878A1 (en) * | 1996-06-08 | 1997-12-18 | Industrial Research Limited | Wind turbines |
| US7233079B1 (en) * | 2005-10-18 | 2007-06-19 | Willard Cooper | Renewable energy electric power generating system |
| CN101527498A (en) * | 2008-03-06 | 2009-09-09 | 通用电气公司 | Systems involving superconducting direct drive generators for wind power applications |
| CN101532472A (en) * | 2008-03-13 | 2009-09-16 | 通用电气公司 | Superconducting homopolar alternator for wind power applications |
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