CN207753462U - Bank side power adjusting device for offshore floating type solar power generation system - Google Patents
Bank side power adjusting device for offshore floating type solar power generation system Download PDFInfo
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- CN207753462U CN207753462U CN201721707462.2U CN201721707462U CN207753462U CN 207753462 U CN207753462 U CN 207753462U CN 201721707462 U CN201721707462 U CN 201721707462U CN 207753462 U CN207753462 U CN 207753462U
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- Prior art keywords
- power
- floating type
- mppt
- ultracapacitor
- bank side
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- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract 1
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- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model discloses a bank side power adjusting device for marine floating solar electric system, include DC-DC converter based on MPPT, ultracapacitor system, two-way charger, battery system and grid-connected inverter, the output and the ultracapacitor system of DC-DC converter based on MPPT, two-way charger and grid-connected inverter are connected, two-way charger still is connected with battery system, DC-DC converter based on MPPT is used for tracking the variable voltage and the power that come from marine floating solar electric system, ultracapacitor system is used for stabilizing input voltage. The utility model discloses optimized marine floating solar electric system's power conditioning, can improve marine floating solar electric efficiency, promoted the solar energy power generation benefit, do benefit to the electric power output who supports solar power supply to be connected to electric wire netting and user, do benefit to the application and the popularization of marine solar electric technology.
Description
Technical field
The utility model is related to field of solar thermal power generation more particularly to a kind of for offshore floating type solar power system
Bank side PCU Power Conditioning Unit.
Background technology
There are coal, the burning of natural gas and nuclear energy in common energy source, but greenhouse gas emission and security problems by
Gradually highlight.Turn to regenerative resource develops into preferable direction in a short time.Floating solar panel across the sea is unstable,
And its electric energy output power is seriously influenced by season, wave and the sun, so that unstable power of the output to bank side.And
Although the problems such as PCU Power Conditioning Unit for being installed on bank side is not in direct contact brine, it still suffers from seawater corrosion, more main
If since floating marine formula solar panel is influenced by waterpower, wind-force etc., the direct current generated is highly unstable, at present
PCU Power Conditioning Unit be poorly suited for use in offshore floating type solar power system, limit offshore floating type solar power generation
Benefit promoted.Therefore, it is necessary to be further improved to the PCU Power Conditioning Unit for being set to bank side.
Invention content
To overcome deficiencies of the prior art, the utility model to provide a kind of for offshore floating type solar power generation
The solar power generation effect of offshore floating type can or can be improved in the bank side PCU Power Conditioning Unit of system at least to a certain extent
Rate promotes solar power generation benefit.It is achieved through the following technical solutions：It is a kind of for offshore floating type solar power system
Bank side PCU Power Conditioning Unit, include DC-DC converter based on MPPT, ultracapacitor, two-way charger, battery system and
Gird-connected inverter, the input terminal of the DC-DC converter based on MPPT is for connecting offshore floating type device of solar generating
Output end, the output end of the DC-DC converter based on MPPT and the ultracapacitor, the two-way charger and
The gird-connected inverter connection, the two-way charger are also connect with the battery system, the DC-DC based on MPPT
Converter is used for tracking variable voltage and power from the offshore floating type device of solar generating, the ultracapacitor
In stablizing input voltage.
Further, the topological structure of the DC-DC converter based on MPPT includes H bridge power converters, an institute
It includes 4 transistors, a high frequency transformer, bridge rectifier and a L-C filter to state H bridge power converters.
Further, the DC-DC converter based on MPPT can be eliminated, i.e., directly with the ultracapacitor
Connection.
Further, the ultracapacitor is ultracapacitor network, includes multiple super capacitors of serial or parallel connection
Device.
Further, further include balancing circuitry, the balancing circuitry is used to balance the voltage of each ultracapacitor.
Further, the two-way charger, including a H bridge converter carry all bilateral power devices.
Further, the gird-connected inverter is handled power supply for alternating current, including 3 by pulse width modulation
Inverter leg exports for 3 phases, and there are one filters for output end.
The beneficial effects of the utility model are, pass through DC-DC converter, ultracapacitor and accumulator based on MPPT
System optimizes the power regulation of offshore floating type solar power system, and the solar energy generating efficiency of offshore floating type can be improved, carry
Solar power generation benefit is risen, conducive to supporting sun-generated electric power to be connected to power grid and the electric power output of user, is conducive to the marine sun
The application and popularization of energy generation technology.
Description of the drawings
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Fig. 1 is the functional block diagram of the utility model embodiment；
Fig. 2 is the DC-DC converter circuit schematic diagram based on MPPT of the utility model embodiment；
Fig. 3 is the typical MPPT schematic diagrames of the DC-DC converter based on MPPT of the utility model embodiment；
Fig. 4 is the two-way charger circuit diagram of the utility model embodiment；
Fig. 5 is the gird-connected inverter circuit diagram of the utility model embodiment.
Specific implementation mode
Below in conjunction with the accompanying drawings and the utility model is further described in embodiment：
A kind of bank side PCU Power Conditioning Unit for offshore floating type solar power system, as shown in Figure 1, including being based on
DC-DC converter, ultracapacitor, two-way charger, battery system and the gird-connected inverter of MPPT, the DC- based on MPPT
The input terminal of DC converters is used to connect the output end of offshore floating type device of solar generating, the DC-DC converter based on MPPT
Output end connect with ultracapacitor, two-way charger and gird-connected inverter, two-way charger is also connect with battery system,
DC-DC converter based on MPPT is super for tracking variable voltage and power from offshore floating type device of solar generating
Capacitor is for stablizing input voltage.When it is implemented, ultracapacitor is preferably ultracapacitor network, including series connection or simultaneously
Multiple ultracapacitors of connection.It is preferred that further including balancing circuitry, balancing circuitry is used to balance the voltage of each ultracapacitor.
The present embodiment concentrates on high power electric adjustment.When it is implemented, can be by one group of direct current power of 800V-1000V
Ashore, this power is unconditional to the electric energy transfer of cable transmission, needs a first order DC-DC converter, that is, is based on
The DC-DC converter of MPPT.Then super capacitor network, battery system are connected to by two-way charger.Charger is double
To, it is then attached to next stage gird-connected inverter and carries out exchange output.Exchange the power grid connection being ability to or simple friendship
Stream output.All metal shells or ground connection must be correctly completed, with thunder-lightning.The crucial composition of whole system includes being based on MPPT
DC-DC converter, ultracapacitor network, two-way charger and charging circuit, battery system, gird-connected inverter and protection
System.Last exchange output is connected to the substation for being connected to Utilities Electric Co..
The topological structure for being preferably based on the DC-DC converter of MPPT includes H bridge power converters, a H bridge power converters
Including 4 transistors, a high frequency transformer, bridge rectifier and a L-C filter.As shown in Fig. 2, based on MPPT's
DC-DC converter is used to handle the unstable direct current high power DC power supply generated from solar panel.From solar energy
The direct current of power generation will adjust and change with seawater ripple or ripples, wind, sun angle, sun time and other environment, and
And change greatly, it is therefore desirable to power regulation.The circuit is made of two phase inverter branches, each phase inverter branch routing branch A
(T1AAnd T2A) and branch b (T1BAnd T2B) composition.MPPT (MPPT maximum power point tracking) is generated compared with Gao Gong under given sunlight intensity
The typical method of rate.This method needs to adjust power from input terminal to search for maximum power by voltage conversion ratio：
Vo/Vin=φ/π
Wherein φ is the phase angle between arm A and arm B.Maximum voltage is exported, φ is equal to π.
The system power of usual solar panel is the total of the several solar cells connected or solar panel
With.Detection method is when voltage increases, as shown in figure 3, if power curve SpSlope from positive to negative, then examined
It surveys.MPPT provides the optimization electrical power conversion from solar panel to DC systems.The output of optimization is a DC link, by electricity
Cell system is made up of two-way charger and gird-connected inverter.When the DC-DC converter based on MPPT is unavailable or unused,
DC-DC converter shown in FIG. 1 based on MPPT can be eliminated, and directly flow to ultracapacitor network from direct-flow input end.
Ultracapacitor network is the key component of voltage stabilization.When input terminal has any unstable or variation, it is carried
The stabilization of voltage supplied filter, noise filter and input terminal, this is usually to be inputted with ripples, solar energy angle by solar energy
Change and cause with other environmental conditions and weather.It is the connection of multiple capacitors of serial or parallel connection.Usual super capacitor
The rated voltage of device is 2.7V.For 1000V rated values, need to connect multiple capacitors.It is preferred that further including a super capacitor
Device balance system.It can use there are two typical balancer, one is passive, i.e., undertake any overvoltage using a resistance
Capacitance；One is active, and overcharge or piezoelectric capsule excessively are transferred to other secondary capacitors using power electronic circuit.
As shown in figure 4, two-way charger will provide electrical power conversion from direct current to battery, thus it must be it is two-way,
Including all power equipments be all two-way.4 transistors beside lc circuit are a bridge-type two-way rectifiers, special to use
In the charge and discharge of battery pack.
As shown in figure 5, the direct current of battery charger is converted to exchange electricity output by power inverter.It also has grid-connected
Ability.Output end is there are one filter, for filtering out the ripple for being connected to AC network, harmonic wave and other unexpected make an uproar
Sound, or as user or the AC power of equipment.Two-way inverter is by 3 phase compositions, such as 3 inverter leg institutes in Fig. 5 circuits
Show, it is alternating current to be handled power supply by pulse width modulation.It is important to note that output electric energy can be by charging side
Formula and be stored in battery truck, electric power can be supplied to the user in anywhere by battery truck, this power supply mode
It is referred to as PMA (Power MobilityAnywhere), PMA is a kind of alternative of cable connection.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of the appended claims for the utility model.
Illustrative description has been carried out to the utility model patent above, it is clear that the realization of the utility model patent not by
The limitation of aforesaid way, if the various improvement of the methodology and technical solution progress of the utility model patent are used, or
It is not improved that the design of the utility model patent and technical solution are directly applied into other occasions, in the utility model
In protection domain.
Claims (7)
1. a kind of bank side PCU Power Conditioning Unit for offshore floating type solar power system, which is characterized in that including being based on
DC-DC converter, ultracapacitor, two-way charger, battery system and the gird-connected inverter of MPPT, it is described based on MPPT
The input terminal of DC-DC converter be used to connect the output end of offshore floating type device of solar generating, it is described based on MPPT's
The output end of DC-DC converter is connect with the ultracapacitor, the two-way charger and the gird-connected inverter, described double
It is also connect to charger with the battery system, the DC-DC converter based on MPPT comes from the sea for tracking
The variable voltage and power of floating type device of solar generating, the ultracapacitor is for stablizing input voltage.
2. a kind of bank side PCU Power Conditioning Unit for offshore floating type solar power system as described in claim 1, special
Sign is that the topological structure of the DC-DC converter based on MPPT includes H bridge power converters, and the H bridges power turns
Parallel operation includes 4 transistors, a high frequency transformer, bridge rectifier and a L-C filter.
3. a kind of bank side PCU Power Conditioning Unit for offshore floating type solar power system as described in claim 1, special
Sign is that the ultracapacitor is ultracapacitor network, includes multiple ultracapacitors of serial or parallel connection.
4. a kind of bank side PCU Power Conditioning Unit for offshore floating type solar power system as described in claim 1, special
Sign is, further includes balancing circuitry, and the balancing circuitry is used to balance the voltage of each ultracapacitor.
5. a kind of bank side PCU Power Conditioning Unit for offshore floating type solar power system as described in claim 1, special
Sign is, the two-way charger, including a H bridge converter, carries all bilateral power devices.
6. a kind of bank side PCU Power Conditioning Unit for offshore floating type solar power system as described in claim 1, special
Sign is, the gird-connected inverter, by power supply processing is alternating current, including 3 inverter legs by pulse width modulation,
It is exported for 3 phases, there are one filters for output end.
7. a kind of bank side PCU Power Conditioning Unit for offshore floating type solar power system as described in claim 1, special
Sign is that bank side PCU Power Conditioning Unit may be coupled to a battery truck, and the battery truck can be driven to arbitrarily
Place provides electric power to provide electric power to the user only by cable connection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK17112458.1 | 2017-11-27 | ||
| HK17112458 | 2017-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207753462U true CN207753462U (en) | 2018-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721707462.2U Expired - Fee Related CN207753462U (en) | 2017-11-27 | 2017-12-11 | Bank side power adjusting device for offshore floating type solar power generation system |
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| CN (1) | CN207753462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740459A (en) * | 2020-06-25 | 2020-10-02 | 中车永济电机有限公司 | Power supply device of mobile flash rail welding machine |
-
2017
- 2017-12-11 CN CN201721707462.2U patent/CN207753462U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740459A (en) * | 2020-06-25 | 2020-10-02 | 中车永济电机有限公司 | Power supply device of mobile flash rail welding machine |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180821 |