CN114542366B - Wave energy generator output switching circuit - Google Patents
Wave energy generator output switching circuit Download PDFInfo
- Publication number
- CN114542366B CN114542366B CN202210023359.5A CN202210023359A CN114542366B CN 114542366 B CN114542366 B CN 114542366B CN 202210023359 A CN202210023359 A CN 202210023359A CN 114542366 B CN114542366 B CN 114542366B
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- CN
- China
- Prior art keywords
- contactor
- wave energy
- energy generator
- generator
- thyristor assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010248 power generation Methods 0.000 claims abstract description 8
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 20
- 230000005611 electricity Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses an output switching circuit of a wave energy generator, which comprises a contactor with auxiliary contacts, a thyristor assembly and a power supply module on the basis of the wave energy generator, an electric energy converter and an energy consumption resistor. In the invention, the output switching circuit of the wave energy generator is realized by selecting a standard contactor and a thyristor assembly, and the component parts are standard products, so that a large number of manufacturers and mature model products are selected; the energy consumption resistance branch circuit adopts thyristor switching, and compared with a contactor, the no-mechanical contact switching mode has better reliability and service life, and is beneficial to the safe operation of the wave energy power generation system.
Description
Technical Field
The invention belongs to the technical field of new energy power generation, and particularly relates to an output switching circuit of a wave energy generator.
Background
In order to realize the switching of the output of the wave energy generator on the electric energy converter and the energy dissipation resistor, the output circuit of the traditional wave energy generator is usually realized by a set of three-pole double-throw contactor, as shown in fig. 1, when the control coil of the contactor is powered on, the contactor is connected with the wave energy generator and the electric energy converter, and the wave energy generator is disconnected with the energy dissipation resistor; when the contactor control coil loses power, the contactor is connected with the wave energy generator and the energy dissipation resistor, and the wave energy generator is disconnected with the energy dissipation resistor. In the design, once the power converter or the system control power supply fails, the wave power generator can be switched to be connected with the energy consumption resistor, and energy is consumed to the energy consumption resistor.
Because the energy of the energy accumulator in the wave energy power generation system is mainly discharged through the wave energy power generator, the wave energy power generator needs to be loaded no matter whether power is externally supplied or not. When the wave energy generator supplies power to the outside, the electric energy is transmitted to an external power grid through the electric energy converter; when external power supply is not needed, the energy of the wave energy generator is generally dissipated on the energy dissipation resistor. In order to ensure a safe discharge of the accumulator pressure, the wave energy generator should be connectable to an energy consuming resistor in case of failure of an external system, such as an electrical energy converter or a control power supply.
The design relies on the fixed three-pole double-throw contactor, is a customized product, has a complex structure, can be selected by a manufacturer and a model, and has a high failure rate in actual engineering projects.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an output switching circuit of a wave energy generator.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a wave energy generator output switching circuit, includes the contactor of being connected with the wave energy generator and electric energy converter and the power consumption resistance of connecting the contactor respectively, and the contactor passes through main contact input and is connected with wave energy generator three-phase AC output, and the contactor passes through main contact output and is connected with electric energy converter three-phase AC input, its characterized in that: the contactor is connected with a switch control signal interface of the thyristor assembly through an auxiliary contact, a three-phase alternating current input end of the thyristor assembly is connected with a three-phase alternating current output end of the wave energy generator, a three-phase alternating current output end of the thyristor assembly is connected with a three-phase alternating current input end of the energy dissipation resistor, the three-phase alternating current output end of the wave energy generator is also connected with an alternating current three-phase input end of a power supply module, and a direct current output end of the power supply module is connected with a driving power interface of the thyristor assembly; when the wave energy generator supplies power normally, the main contact of the contactor is switched on to connect the wave energy generator and the electric energy converter; when the main contact of the contactor is switched on, the auxiliary contact of the contactor is opened, and the thyristor assembly is switched off to disconnect the wave energy generator from the energy dissipation resistor; when the wave energy generator stops supplying power, the main contact of the contactor is disconnected to disconnect the wave energy generator and the electric energy converter; when the main contact of the contactor is disconnected, the auxiliary contact of the contactor is opened, and the thyristor assembly is opened to connect the wave energy generator with the energy dissipation resistor; when the electric energy converter fails, the main contact of the contactor is disconnected, and the wave energy generator is disconnected with the electric energy converter; when the main contact of the contactor is disconnected, the auxiliary contact of the contactor is opened, and the thyristor assembly is opened to connect the wave energy generator with the energy dissipation resistor; when the control power supply fails, the contactor controls the power supply to lose electricity, the main contact automatically opens, and the wave energy generator is disconnected with the electric energy converter; when the main contact of the contactor is disconnected, the auxiliary contact of the contactor is opened, and the thyristor assembly is opened to connect the wave energy generator with the energy dissipation resistor.
The output switching circuit of the wave energy generator is characterized in that when the wave energy generator normally outputs and the running rotating speed is higher than the minimum generating rotating speed, the input of the power supply module is derived from the wave energy generator, a stable direct-current working voltage is provided for the thyristor assembly, the stable direct-current working voltage is used as a driving power supply, and when the contactor is in a closing/opening state, the auxiliary contact controls the thyristor assembly to be in an opening/closing state; when the rotation speed of the wave energy generator is lower than the minimum power generation rotation speed of the system, the power supply module does not work, and the thyristor assembly does not drive the power supply to automatically switch off.
The wave energy generator output switching circuit is a permanent magnet generator.
The invention selects the standard contactor and the thyristor assembly to realize the output switching circuit of the wave energy generator, and the achieved beneficial effects are that:
1, the component parts are standard products, and a large number of manufacturers and mature model products are selected;
And 2, the energy consumption resistor branch circuit adopts thyristor switching, and compared with a contactor, the no-mechanical contact switching mode has better reliability and service life, thereby being beneficial to the safe operation of the wave energy power generation system.
Drawings
Fig. 1 is a schematic diagram of an output switching circuit of a wave power generator in the prior art;
fig. 2 is a circuit schematic of the present invention.
Detailed Description
In order to facilitate understanding of technical means, creation characteristics, achievement of purposes and effectiveness of solving problems achieved by the present invention, the technical scheme of the present invention is further described with reference to the accompanying drawings.
Referring to fig. 2, the wave energy generator output switching circuit disclosed by the invention comprises a contactor with auxiliary contacts, a thyristor assembly and a power module on the basis of a wave energy generator, an electric energy converter and an energy consumption resistor.
When the circuit is connected, the input end of the main contact of the contactor with the auxiliary contact is connected with the three-phase alternating current output end of the wave energy generator, the output end of the contactor with the auxiliary contact is connected with the three-phase alternating current input end of the electric energy converter, and the auxiliary contact of the contactor is connected with the switch control signal interface of the thyristor assembly; the three-phase alternating current input end of the thyristor assembly is connected with the three-phase alternating current output end of the wave energy generator, and the three-phase alternating current output end of the thyristor assembly is connected with the three-phase alternating current input end of the energy dissipation resistor; the alternating current three-phase input end of the power supply module is connected with the three-phase alternating current output end of the wave energy generator, and the direct current output end of the power supply module is connected with the driving power interface of the thyristor assembly.
The specific implementation steps are as follows:
1) When the wave energy generator is required to normally supply power to the outside, an external system gives a contactor closing control instruction, and a main contact of the contactor is closed to connect the wave energy generator and the electric energy converter, so that the wave energy generator supplies power to the outside through the electric energy converter; when the main contact of the contactor is switched on, an auxiliary contact of the contactor is opened, and the state of the auxiliary contact controls the thyristor assembly to be switched off so as to disconnect the wave energy generator from the energy dissipation resistor;
2) When the wave energy generator is required to stop supplying power to the outside, an external system gives a contactor opening control command, and a main contact of the contactor opens to disconnect the wave energy generator and the electric energy converter and stop supplying power to the outside; when the main contact of the contactor is disconnected, an auxiliary contact of the contactor is opened, and the state of the auxiliary contact controls the thyristor assembly to be opened so as to connect the wave energy generator with the energy dissipation resistor;
3) When the system fails, such as the failure of the electric energy converter, the external system gives a contactor opening control instruction to open the main contact of the contactor so as to ensure the safety of the wave energy generator, and the wave energy generator is disconnected from the electric energy converter to stop externally supplying power; when the main contact of the contactor is disconnected, an auxiliary contact of the contactor is opened, and the state of the auxiliary contact controls the thyristor assembly to be opened so as to connect the wave energy generator with the energy dissipation resistor;
4) When the system fails, such as a control power failure, the contactor controls the power supply to lose electricity, the main contact is automatically switched off, and the wave energy generator is disconnected from the electric energy converter to stop external power supply; when the main contact of the contactor is disconnected, an auxiliary contact of the contactor is opened, and the state of the auxiliary contact controls the thyristor assembly to be opened so as to connect the wave energy generator with the energy dissipation resistor.
The driving power supply of the thyristor assembly is provided by the wave energy generator, and the wave energy generator supplies power to the thyristor assembly through the power supply module. The working principle of the power supply module is as follows:
when the rotating speed of the wave energy generator is higher than the minimum generating rotating speed of the system, the power supply module works, the thyristor assembly obtains a driving power supply, and at the moment, the thyristor is turned on or off and controlled by the auxiliary contact state of the contactor; when the rotation speed of the wave energy generator is lower than the minimum power generation rotation speed of the system, the power supply module does not work, the thyristor assembly does not drive the power supply, and the thyristor is in a turn-off state.
The present application is not limited to the above-described preferred embodiments, and any person skilled in the art may, in light of the present application, obtain other modified and improved products, but any changes in shape or structure of the modified and improved products fall within the scope of the present application, regardless of the technical solutions which are the same as or similar to the present application.
Claims (3)
1. The utility model provides a wave energy generator output switching circuit, includes the contactor of being connected with the wave energy generator and electric energy converter and the power consumption resistance of connecting the contactor respectively, and the contactor passes through main contact input and is connected with wave energy generator three-phase AC output, and the contactor passes through main contact output and is connected with electric energy converter three-phase AC input, its characterized in that: the contactor is connected with a switch control signal interface of the thyristor assembly through an auxiliary contact, a three-phase alternating current input end of the thyristor assembly is connected with a three-phase alternating current output end of the wave energy generator, a three-phase alternating current output end of the thyristor assembly is connected with a three-phase alternating current input end of the energy dissipation resistor, the three-phase alternating current output end of the wave energy generator is also connected with an alternating current three-phase input end of a power supply module, and a direct current output end of the power supply module is connected with a driving power interface of the thyristor assembly;
when the wave energy generator supplies power normally, the main contact of the contactor is switched on to connect the wave energy generator and the electric energy converter; when the main contact of the contactor is switched on, the auxiliary contact of the contactor is opened, and the thyristor assembly is switched off to disconnect the wave energy generator from the energy dissipation resistor;
When the wave energy generator stops supplying power, the main contact of the contactor is disconnected to disconnect the wave energy generator and the electric energy converter; when the main contact of the contactor is disconnected, the auxiliary contact of the contactor is opened, and the thyristor assembly is opened to connect the wave energy generator with the energy dissipation resistor;
When the electric energy converter fails, the main contact of the contactor is disconnected, and the wave energy generator is disconnected with the electric energy converter; when the main contact of the contactor is disconnected, the auxiliary contact of the contactor is opened, and the thyristor assembly is opened to connect the wave energy generator with the energy dissipation resistor;
When the control power supply fails, the contactor controls the power supply to lose electricity, the main contact automatically opens, and the wave energy generator is disconnected with the electric energy converter; when the main contact of the contactor is disconnected, the auxiliary contact of the contactor is opened, and the thyristor assembly is opened to connect the wave energy generator with the energy dissipation resistor.
2. The wave energy generator output switching circuit according to claim 1, wherein the power module provides a stable direct current operating voltage for the thyristor assembly when the running rotational speed of the wave energy generator is higher than the minimum power generation rotational speed, and the auxiliary contact controls the thyristor assembly to be in an off/on state when the contactor is in a closing/opening state; when the rotation speed of the wave energy generator is lower than the minimum power generation rotation speed of the system, the power supply module does not work, and the thyristor assembly is automatically opened.
3. The wave power generator output switching circuit according to claim 1 or 2, wherein the wave power generator is a permanent magnet generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210023359.5A CN114542366B (en) | 2022-01-10 | 2022-01-10 | Wave energy generator output switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210023359.5A CN114542366B (en) | 2022-01-10 | 2022-01-10 | Wave energy generator output switching circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114542366A CN114542366A (en) | 2022-05-27 |
| CN114542366B true CN114542366B (en) | 2024-07-16 |
Family
ID=81669794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210023359.5A Active CN114542366B (en) | 2022-01-10 | 2022-01-10 | Wave energy generator output switching circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN114542366B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485966A (en) * | 2013-09-06 | 2014-01-01 | 中国能源建设集团广东省电力设计研究院 | Wave power generation unit |
| CN111561416A (en) * | 2020-04-29 | 2020-08-21 | 国网山东省电力公司电力科学研究院 | A grid-friendly wave energy generation collection system and its operation control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE0301106L (en) * | 2003-04-14 | 2004-04-20 | Swedish Seabased Energy Ab | wave power generator comprising an electric linear generator provided with electromechanical damping means |
| JP2005348562A (en) * | 2004-06-04 | 2005-12-15 | Sanken Electric Co Ltd | Ac power supply apparatus |
| JP4864620B2 (en) * | 2006-09-26 | 2012-02-01 | 三菱電機株式会社 | Three-phase load operation device |
| CN209671131U (en) * | 2019-04-15 | 2019-11-22 | 华能新能源股份有限公司河北分公司 | A kind of umbrella shape float type wave-power device |
-
2022
- 2022-01-10 CN CN202210023359.5A patent/CN114542366B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485966A (en) * | 2013-09-06 | 2014-01-01 | 中国能源建设集团广东省电力设计研究院 | Wave power generation unit |
| CN111561416A (en) * | 2020-04-29 | 2020-08-21 | 国网山东省电力公司电力科学研究院 | A grid-friendly wave energy generation collection system and its operation control method |
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| Publication number | Publication date |
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| CN114542366A (en) | 2022-05-27 |
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