CN203135438U - Multiple-power source hybrid power supply circuit of photovoltaic water pump - Google Patents
Multiple-power source hybrid power supply circuit of photovoltaic water pump Download PDFInfo
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- CN203135438U CN203135438U CN 201320116121 CN201320116121U CN203135438U CN 203135438 U CN203135438 U CN 203135438U CN 201320116121 CN201320116121 CN 201320116121 CN 201320116121 U CN201320116121 U CN 201320116121U CN 203135438 U CN203135438 U CN 203135438U
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- water pump
- photovoltaic
- electric energy
- supply circuit
- power supply
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Abstract
The utility model relates to a multiple-power source hybrid power supply circuit of a photovoltaic water pump. With the multiple-power source hybrid power supply circuit adopted, when photovoltaic power generation is underpower, a photovoltaic water pump system does not need to be disengaged with a photovoltaic power generation array; based on the power generated by the photovoltaic array, underpower portions can be complementally powered by mains electricity or diesel power generation; and therefore, the water pump can operate in a full-load manner, and water demands can be satisfied, and the power generation capacity of the photovoltaic array can be fully utilized. The multiple-power source hybrid power supply circuit is characterized in that an output wire of photovoltaic array electric energy is isolated by a diode, and then, is connected in parallel with a direct current bus; an output wire of mains electricity or generator electric energy is rectified by a rectifier bridge, and then, is also connected in parallel with the direct current bus; and the direct current bus is connected with a water pump controller so as to provide electric energy for the water pump. When the electric energy of the photovoltaic array which drives the water pump is insufficient, and the water pump is in full-speed operation, the insufficient portions are complementally powered by the mains electricity or diesel power generation; and therefore, total electric energy required by the operation of the water pump can be satisfied, and at the same time, the output capability of the photovoltaic array can be given to full play and be fully used, and thus, energy waste can be avoided.
Description
Technical field
This patent relates to the circuit that one or more power supplys in the power supplys such as a kind of solar energy of photovoltaic water pumping system and electrical network, generator are mixed together power supply.
Background technology
Solar energy is the green energy resource of cleanliness without any pollution, also is the reproducible energy simultaneously, more is conducive to the sustainable development of countries and regions.In the application of solar energy, photovoltaic water lift (drawing water) is an important branch field.In use, because of the lack of uniformity of actual used water demand and the uncertainty of illumination condition, the discharge of pump that more weak intensity of illumination correspondence often occurs does not conform to active user's actual used water demand, and water yield can not satisfy the current water demand of user.Design by present photovoltaic water pump, this moment, the user needed the temporary transient photovoltaic power generation array of throwing off, and power supply is switched on civil power or the diesel engine generator, made the running at full capacity of water pump energy, satisfied water requirements.And the energy output of photovoltaic array has just been wasted at this moment.
The utility model content
The purpose of this utility model is to provide a kind of and can makes under the under powered situation of photovoltaic generation, photovoltaic water pump system need not to throw off photovoltaic power generation array, send at photovoltaic array on the basis of electric weight, the circuit that insufficient section is supplied by civil power or diesel generation, so that water pump can be operated at full capacity, solve water demand, and take full advantage of the generating capacity of photovoltaic array.
In order to reach above-mentioned specification requirement, the utility model is achieved through the following technical solutions: the output lead that it is characterized in that the photovoltaic array electric energy is in parallel with dc bus after diode-isolated; The output lead of civil power or generator electric energy is also in parallel with dc bus after the rectifier bridge rectification, and dc bus is connected with water pump controller, for water pump provides electric energy.
Many power supplys hybrid power supply circuit according to the photovoltaic water pump of such scheme design, when the photovoltaic array electric energy that drives water pump is not enough, when the water pump full speed running, its insufficient section is supplied by civil power or diesel generation, required total electric energy when both satisfying water pump operation, the fan-out capability of photovoltaic array has also obtained fully playing and utilizing, and has avoided the waste of the energy.
Description of drawings
Fig. 1 is many power supplys hybrid power supply circuit diagram of photovoltaic water pump;
Fig. 2 is P-V and the I-V characteristic curve of photovoltaic array when powering separately;
P-V when Fig. 3 is hybrid power supply and I-V characteristic curve.
Embodiment
Also the utility model will be further described by reference to the accompanying drawings below by embodiment.
Fig. 1 is many power supplys hybrid power supply circuit diagram of photovoltaic water pump.As seen from the figure, the output lead of photovoltaic array electric energy is in parallel with dc bus after diode-isolated; The output lead of civil power or generator electric energy is also in parallel with dc bus after the rectifier bridge rectification, and dc bus is connected with water pump controller, can provide electric energy for water pump simultaneously.
Because of the self character of photovoltaic module, when output was unloaded, the open circuit output voltage (Uoc) of assembly was higher than quiescent potential (Umpp).Along with the increasing of output current, output voltage reduces gradually, and the assembly power output reaches after the maximum power point, and output current strengthens as continuing, and then output voltage begins to reduce as shown in Figure 2 rapidly.And civil power or generator output voltage are comparatively stable, and the direct voltage that obtains after the rectification is also comparatively constant.Output voltage when making the photovoltaic array operate as normal during system configuration (Umpp) is the voltage after rectification a little more than civil power or generator.When water pump controller started, pump power progressively increased, because the photovoltaic array configuration voltages is higher, this moment, the solar array output current progressively increased, and output voltage progressively reduces from open circuit voltage (Uoc).When voltage dropped to quiescent potential, this moment, solar array reached maximum power point.This moment, then the photovoltaic array output current continued to increase if continue to improve pump rotary speed, and output voltage descends fast, and reaches the voltage behind the commercial power rectification.After this, civil power or generator begin because the bigger fan-out capability of civil power or generator has stoped the further reduction of DC bus-bar voltage, and to make water pump be able to full speed running as shown in Figure 3 to the water pump controller power supply.
Therefore, during the water pump full speed running, the fan-out capability of photovoltaic array has also obtained fully playing, and photovoltaic energy is fully used, and has avoided the waste of the energy.
Claims (1)
1. many power supplys of photovoltaic water pump hybrid power supply circuit is characterized in that the output lead of photovoltaic array electric energy is in parallel with dc bus after diode-isolated; The output lead of civil power or generator electric energy is also in parallel with dc bus after the rectifier bridge rectification, and dc bus is connected with water pump controller, for water pump provides electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320116121 CN203135438U (en) | 2013-03-14 | 2013-03-14 | Multiple-power source hybrid power supply circuit of photovoltaic water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320116121 CN203135438U (en) | 2013-03-14 | 2013-03-14 | Multiple-power source hybrid power supply circuit of photovoltaic water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203135438U true CN203135438U (en) | 2013-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320116121 Expired - Lifetime CN203135438U (en) | 2013-03-14 | 2013-03-14 | Multiple-power source hybrid power supply circuit of photovoltaic water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203135438U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501020A (en) * | 2013-10-12 | 2014-01-08 | 电子科技大学 | Hybrid power supply system consisting of mains supply network and photovoltaic assembly and control method thereof |
| PT107720A (en) * | 2014-06-17 | 2015-12-17 | Pedro Miguel Da Silva Cunha | HYBRID CONTROL DEVICE FOR THREE-PHASE ENGINE POWER SUPPLY FOR WATER PUMP, WITH RESOURCE TO THREE SOURCES OF ENERGY. |
-
2013
- 2013-03-14 CN CN 201320116121 patent/CN203135438U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501020A (en) * | 2013-10-12 | 2014-01-08 | 电子科技大学 | Hybrid power supply system consisting of mains supply network and photovoltaic assembly and control method thereof |
| PT107720A (en) * | 2014-06-17 | 2015-12-17 | Pedro Miguel Da Silva Cunha | HYBRID CONTROL DEVICE FOR THREE-PHASE ENGINE POWER SUPPLY FOR WATER PUMP, WITH RESOURCE TO THREE SOURCES OF ENERGY. |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |