CN102904327A - Method for tracking output voltage of master direct-current power supply with complementary type solar controller - Google Patents
Method for tracking output voltage of master direct-current power supply with complementary type solar controller Download PDFInfo
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- CN102904327A CN102904327A CN2012103883869A CN201210388386A CN102904327A CN 102904327 A CN102904327 A CN 102904327A CN 2012103883869 A CN2012103883869 A CN 2012103883869A CN 201210388386 A CN201210388386 A CN 201210388386A CN 102904327 A CN102904327 A CN 102904327A
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Abstract
The invention provides a method for tracking an output voltage of a master direct-current power supply with a complementary type solar controller; the method comprises the steps of reducing an output current or the output voltage of the solar controller in a periodic or nonperiodic manner; when the output voltage is monitored to be less than a lower limit threshold of the preset output voltage of the solar controller or the output current is equal to 0A, stopping the output of the solar controller; at this time, measuring the output voltage of the master direct-current power supply and judging whether a fluctuation of the measured output voltage is less than 0.1V within 1 second; and if so, recording the measured output voltage as a tracking voltage for tracking the output voltage of the master direct-current power supply. According to the method, the output voltage of the solar controller can be adjusted based on the tracking voltage conveniently so that the solar controller can output the electric energy as much as possible, thereby achieving the effects of energy conservation and consumption reduction; and meanwhile, new components are not needed by the method, so the cost is low.
Description
Technical field
The present invention relates to a kind of complementary type field of solar thermal power generation, particularly relate to the method that a kind of complementary type controller for solar is followed the tracks of primary DC power output voltage.
Background technology
The complementary type solar power system is to have added the as a supplement controller for solar of energy use in primary DC power system, when solar irradiation is sufficient, powered by controller for solar, when solar irradiation is not enough, power by solar energy and primary DC power supply parallel operation or by primary DC power supply, to reach the energy-saving consumption-reducing purpose.The output of controller for solar is with the output-parallel of primary DC power supply in the complementary type solar power system, and, only have when the output voltage of controller for solar is higher than the output voltage of primary DC power supply, controller for solar just can provide electric energy, thereby reach the energy-saving consumption-reducing effect, so controller for solar must have the function of the primary DC power output voltage of dynamic tracking.
The present in the industry cycle interior function that mainly realizes following the tracks of primary DC power output voltage with two kinds of methods, a kind of method is that controller for solar and primary DC power supply are carried out real-time communication, obtains the output voltage of primary DC power supply, thereby follows the tracks of.But, this kind method needs primary DC power supply to provide one to be used for and communication port that controller for solar communicates, most primary DC power supply only provide a communication port, this communication port has been that centralized monitor is shared in actual applications, so, then need serial ports of primary DC power supply expansion as and the communication port that communicates of controller for solar, cost is higher like this, in addition, even unnecessary serial ports has been arranged, the mode by communication gathers, and efficient is lower, and the communications protocol of every kind of DC power supply all needs to resolve, and development cost is higher.
Another kind method is that controller for solar passes through the output that the control switch device cuts off controller for solar, make primary DC power supply independently-powered, this moment, controller for solar obtained floating voltage by the output voltage of detecting primary DC power supply, thereby realized following the tracks of the function of primary DC power output voltage.But this method need to be used the switching device be used to the output that cuts off controller for solar, has increased hardware cost, has reduced system reliability.
Therefore, how the method that a kind of complementary type controller for solar that solves the disadvantages of prior art is followed the tracks of primary DC power output voltage is proposed, additionally not increase under the prerequisite of device, reach controller for solar and dynamically follow the tracks of the purpose of the output voltage of primary DC power supply, and then the reduction cost, real is present problem anxious to be resolved.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of complementary type controller for solar to follow the tracks of the method for primary DC power output voltage, additionally not increase under the prerequisite of device, reach controller for solar and dynamically follow the tracks of the purpose of the output voltage of primary DC power supply, and then reduce cost.
Reach for achieving the above object other relevant purposes, the invention provides the method that a kind of complementary type controller for solar is followed the tracks of primary DC power output voltage, it is applied in the controller for solar end, wherein, the output of described controller for solar and the output of primary DC power supply are to be connected in parallel, it is characterized in that the method that described complementary type controller for solar is followed the tracks of primary DC power output voltage comprises: the timing cycle that 1) presets a timer; 2) begin timing according to the timing cycle that sets, and monitor described timer and whether arrive described timing cycle, if then proceed to step 3); 3) with described timer zero clearing; 4) output voltage or the output current of reduction controller for solar; 5) measure the output current of controller for solar, and judge whether measured output current is zero, if then proceed to step 6); 6) measure the output voltage of described primary DC power supply, and whether judge the fluctuation of measured output voltage in 1 second less than 0.1V, and less than 0.1V the time, recording measured output voltage is the floating voltage of the output voltage of primary DC power supply.
Preferably, in above-mentioned steps 3) in further comprise: after described timer zero clearing, adjust the timing cycle of described timer, then, return execution in step 2).
In addition, the complementary type controller for solar of the present invention method of following the tracks of primary DC power output voltage also comprises: the lower threshold that presets the output voltage of described controller for solar; And when the output current of described controller for solar is non-vanishing, measure the output voltage of described controller for solar, and whether the output voltage of judging described controller for solar is during less than described lower threshold, if, then enter step 6), if not, then return step 4).Particularly, the lower threshold of the output voltage of this controller for solar is set according to the standard that is lower than the output voltage of primary DC power supply.And, after step 6), the method that complementary type controller for solar of the present invention is followed the tracks of primary DC power output voltage also comprises step: adjust the output voltage of described controller for solar according to described floating voltage, to increase the output electric energy of described controller for solar.
As mentioned above, the method that complementary type controller for solar of the present invention is followed the tracks of primary DC power output voltage mainly is to reduce output current or the voltage of controller for solar with periodicity or aperiodicity, make primary DC power supply independently-powered, this moment, controller for solar obtained floating voltage by the output voltage of monitoring primary DC power supply, thereby realize dynamically following the tracks of the function of primary DC power output voltage, and then adjust the output voltage of controller for solar according to floating voltage, make controller for solar output electric energy as much as possible, reach the effect of energy-saving consumption-reducing.In addition, use the method that complementary type controller for solar of the present invention is followed the tracks of primary DC power output voltage, need not increase device newly, cost is low.
Description of drawings
Fig. 1 is shown as the operating process schematic diagram of the first embodiment in single cycle that complementary type controller for solar of the present invention is followed the tracks of the method for primary DC power output voltage.
Fig. 2 is shown as the operating process schematic diagram of the second embodiment in single cycle that complementary type controller for solar of the present invention is followed the tracks of the method for primary DC power output voltage.
The element numbers explanation
S100 ~ S109, S100 ' ~ S105 ', S1051 ', S106 ' ~ S109 ' step
Embodiment
Below by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification.The present invention can also be implemented or be used by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change under the spirit of the present invention not deviating from.
The first embodiment
See also Fig. 1, that demonstration complementary type controller for solar of the present invention is followed the tracks of the operational flowchart of the first embodiment in single cycle of the method for primary DC power output voltage, wherein, the method that complementary type controller for solar of the present invention is followed the tracks of primary DC power output voltage is to be applied in the controller for solar end, in addition, the output of the output of controller for solar and primary DC power supply is connected in parallel.The operating procedure that the method for below namely complementary type controller for solar of the present invention being followed the tracks of primary DC power output voltage is carried out single cycle is elaborated.
Execution in step S100 at first presets the timing cycle of a timer.Then, carry out step S101.
In step S101, begin timing according to the timing cycle that sets, and monitor this timer and whether arrive this timing cycle, if, then proceed to step S102, if not, then repeat this step, continue monitoring.
In step S102, with this timer zero clearing.Then, carry out step S103.
In step S103, reduce the output voltage of controller for solar, particularly, namely utilize controller for solar to send the pressure regulation instruction to solar DC-DC circuit, to reduce the output voltage of controller for solar.But not as limit, in other embodiments, also can be by send the current limliting instruction to solar DC-DC circuit, to reduce the output current of controller for solar, perhaps, by sending pressure regulation and current limliting instruction to solar DC-DC circuit simultaneously, with output voltage and the output current that reduces simultaneously controller for solar.Then, carry out step S104.
In step S104, measure the output current of controller for solar.Then, carry out step S105.
In step S105, judge whether measured output current is zero, if, then proceed to step S106, if not, then be back to step S103.
In step S106, measure the output voltage of this primary DC power supply.Then, carry out step S107.
In step S107, whether judge the fluctuation of measured output voltage in 1 second less than 0.1V, if, show that then the output voltage of primary DC power supply this moment is stable, and proceed to step S108, if not, then be back to step S106.
In step S108, recording measured output voltage is the floating voltage of this primary DC power output voltage.Then, carry out step S109.
In step S109, adjust the output voltage of this controller for solar according to this floating voltage, to increase the output electric energy of this controller for solar.
Preferably, in above-mentioned steps S102, further comprise: after this timer zero clearing, adjust the timing cycle of described timer, then, return execution in step S101, and, the timing cycle of adjusting can be the value same with timing cycle before, i.e. fixing parameter also can be the different value of timing cycle before with it, for example Varying parameters according to certain rules.So, can be by timing cycle with periodicity (each timing cycle homogeneous phase simultaneously) or aperiodicity (each timing cycle is not all not simultaneously) repetitive cycling operation step as shown in Figure 1, the purpose of dynamically following the tracks of the output voltage of primary DC power supply to reach controller for solar.
The second embodiment
See also Fig. 2, it is the operating process schematic diagram of the second embodiment of the complementary type controller for solar that the shows the present invention method of following the tracks of primary DC power output voltage, wherein, following the tracks of the identical or approximate assembly of the method (as shown in Figure 1) of primary DC power output voltage with the complementary type controller for solar of previous embodiment is to represent with identical or approximate element numbers, and omit detailed narration, so that the explanation of this case is clearer understandable.
The maximum difference of method that the complementary type controller for solar that the complementary type controller for solar of the second embodiment is followed the tracks of the method for primary DC power output voltage and the first embodiment is followed the tracks of primary DC power output voltage is, the complementary type controller for solar of the first embodiment is followed the tracks of the method for primary DC power output voltage and is judged that the method whether output of controller for solar is ended is by measuring the mode of electric current, that is, follow the tracks of in the method (as shown in Figure 1) of primary DC power output voltage in the complementary type controller for solar of this first embodiment, reduce the output voltage of controller for solar at step S103() afterwards, measure the output current of controller for solar, and judge whether measured output current is zero, if, the output that then shows controller for solar is ended, if not, then return execution in step S103; And the complementary type controller for solar of the second embodiment to follow the tracks of the method (as shown in Figure 2) of primary DC power output voltage be in step S100 ', except setting the timing cycle with the timer of the step S100 of the first embodiment, also set the lower threshold of the output voltage of controller for solar, wherein, the lower threshold of the output voltage of this controller for solar is set according to the standard that is lower than the output voltage of primary DC power supply, and the step S105(of execution and the first embodiment as shown in Figure 1, namely judge when measured output current is non-vanishing) after the identical processing mode, increased the execution of step S1051 ', namely further measure the output voltage of controller for solar, and judge that whether measured output voltage is less than this lower threshold, if not, then return step S103 ', if, then enter step S106 ', follow-up then the employing with the complementary type controller for solar of the first embodiment followed the tracks of the identical processing mode of the method (as shown in Figure 1) of primary DC power output voltage with the floating voltage of the output voltage that obtains primary DC power supply.
In sum, the method that complementary type controller for solar of the present invention is followed the tracks of primary DC power output voltage mainly is to reduce output current or the voltage of controller for solar with periodicity or aperiodicity, to be monitored when equaling 0A to output voltage less than the lower threshold of the output voltage of default controller for solar or output current, namely end the output of controller for solar, at this moment, measure again the output voltage of primary DC power supply, and judge that whether the fluctuation of measured output voltage in 1 second be less than 0.1V, if, then record the floating voltage that measured output voltage is primary DC power output voltage, so, then be convenient to adjust according to floating voltage the output voltage of controller for solar, make controller for solar output electric energy as much as possible, reach the effect of energy-saving consumption-reducing, in addition, use the method that complementary type controller for solar of the present invention is followed the tracks of primary DC power output voltage, need not increase device newly, cost is low, has good economic benefit.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not is used for restriction the present invention.Any person skilled in the art scholar all can be under spirit of the present invention and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under disclosed spirit and the technological thought, must be contained by claim of the present invention.
Claims (5)
1. method that the complementary type controller for solar is followed the tracks of primary DC power output voltage, be applied in the controller for solar end, wherein, the output of described controller for solar and the output of described primary DC power supply are connected in parallel, it is characterized in that the method that described complementary type controller for solar is followed the tracks of primary DC power output voltage comprises:
1) presets the timing cycle of a timer;
2) begin timing according to the timing cycle that sets, and monitor described timer and whether arrive described timing cycle, if then proceed to step 3);
3) with described timer zero clearing;
4) output voltage or the output current of reduction controller for solar;
5) measure the output current of controller for solar, and judge whether measured output current is zero, if then enter step 6);
6) measure the output voltage of described primary DC power supply, and whether judge the fluctuation of measured output voltage in 1 second less than 0.1V, and less than 0.1V the time, recording measured output voltage is the floating voltage of described primary DC power output voltage.
2. the complementary type controller for solar according to claim 1 method of following the tracks of primary DC power output voltage, it is characterized in that: in above-mentioned steps 3) in further comprise: after described timer zero clearing, adjust the timing cycle of described timer, then, return execution in step 2).
3. the complementary type controller for solar according to claim 1 method of following the tracks of primary DC power output voltage is characterized in that the method also comprises step:
Preset the lower threshold of the output voltage of described controller for solar; And
When the output current of described controller for solar is non-vanishing, measure the output voltage of described controller for solar, and the output voltage of judging described controller for solar is during whether less than described lower threshold, if, then enter step 6), if not, then return step 4).
4. the complementary type controller for solar according to claim 3 method of following the tracks of primary DC power output voltage, it is characterized in that the lower threshold of the output voltage of described controller for solar is set according to the standard that is lower than the output voltage of primary DC power supply.
5. the complementary type controller for solar according to claim 1 method of following the tracks of primary DC power output voltage is characterized in that after step 6), the method is further comprising the steps of:
Adjust the output voltage of described controller for solar according to described floating voltage, to increase the output electric energy of described controller for solar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210388386.9A CN102904327B (en) | 2012-10-12 | 2012-10-12 | Complementary type controller for solar follows the tracks of the method for primary DC power output voltage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210388386.9A CN102904327B (en) | 2012-10-12 | 2012-10-12 | Complementary type controller for solar follows the tracks of the method for primary DC power output voltage |
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| CN102904327A true CN102904327A (en) | 2013-01-30 |
| CN102904327B CN102904327B (en) | 2015-09-02 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201557307U (en) * | 2009-11-20 | 2010-08-18 | 四川新力光源有限公司 | solar controller |
| WO2010146470A2 (en) * | 2009-06-16 | 2010-12-23 | Agence Spatiale Europeenne | Solar array regulator based on step-up and down conversion and solar power system comprising the same |
| CN201758372U (en) * | 2010-06-30 | 2011-03-09 | 田方共 | Solar energy power source with power converter |
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2012
- 2012-10-12 CN CN201210388386.9A patent/CN102904327B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010146470A2 (en) * | 2009-06-16 | 2010-12-23 | Agence Spatiale Europeenne | Solar array regulator based on step-up and down conversion and solar power system comprising the same |
| CN201557307U (en) * | 2009-11-20 | 2010-08-18 | 四川新力光源有限公司 | solar controller |
| CN201758372U (en) * | 2010-06-30 | 2011-03-09 | 田方共 | Solar energy power source with power converter |
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