CN103197688A - Flat single-axis tracker of solar photovoltaic power generation system - Google Patents
Flat single-axis tracker of solar photovoltaic power generation system Download PDFInfo
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- CN103197688A CN103197688A CN2013100884332A CN201310088433A CN103197688A CN 103197688 A CN103197688 A CN 103197688A CN 2013100884332 A CN2013100884332 A CN 2013100884332A CN 201310088433 A CN201310088433 A CN 201310088433A CN 103197688 A CN103197688 A CN 103197688A
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Abstract
The invention discloses a flat single-axis tracker of a solar photovoltaic power generation system. The flat single-axis tracker of the solar photovoltaic power generation system comprises a flat single-axis tracking bracket and a linkage mechanism, and further comprises a redundancy control part. The redundancy control part comprises a main control system A, a standby system B, an inclination sensor A and an inclination sensor B. The inclination sensor A and the inclination sensor B are respectively installed on an inclined surface of the tracker or the tracking bracket, and directing directions of the inclination sensor A and the inclination sensor B are perpendicular to a solar cell panel. The inclination sensor A is further connected on the main control system A, the inclination sensor B is further connected on the standby system B, and the main control system A and the standby system B are mutually connected and conduct double-directional communication. Due to the fact that the redundancy control part is added, and the main control system A and the standby system B are mutually connected and conduct the double-direction communication, reliability of the flat single-axis tracker of the solar photovoltaic power generation system is improved.
Description
Technical field
The present invention relates to a kind of flat uniaxiality tracking device of solar photovoltaic generation system, specifically, relate to the flat uniaxiality tracking device of a kind of sun power.
Background technology
The flat uniaxiality tracking utensil of sun power has with fixed sun power installs the same floor area and cost, but it can significantly improve generated energy along with the difference of solar azimuth is adjusted.
Existing flat uniaxiality tracking device all adopts single driving and control, and reliability is not high enough, and any link breaks down and all can cause system not work, and has increased the maintenance cost of system on the contrary.
Summary of the invention
The present invention provides a kind of redundant flat uniaxiality tracking device that has in order to solve the not high enough problem of flat uniaxiality tracking device reliability of the prior art, and it can guarantee that system moves stably in a long term, reduces maintenance cost greatly.
It is as follows that the present invention solves the problems of the technologies described above the technical scheme of taking:
A kind of flat uniaxiality tracking device of solar photovoltaic generation system, comprise flat uniaxiality tracking support and link gear, also comprise the Redundant Control part, described Redundant Control partly comprises: master control system A, standby system B, obliquity sensor A, obliquity sensor B, wherein, described obliquity sensor A and obliquity sensor B are installed in the dip plane of described tracker respectively or follow the tracks of on the support, and pointing direction is perpendicular to solar panel, described obliquity sensor A is connected to master control system A again, described obliquity sensor B is connected to standby system B again, and described master control system A and standby system B are connected to each other and two-way communicating.
Wherein, preferred construction is that described master control system A and standby system B are connected to long distance control system by external bus jointly.
The present invention has taked after the such scheme, owing to increased described Redundant Control part, and described master control system A and standby system B is connected to each other and two-way communicating, thus, it has improved the reliability of the flat uniaxiality tracking device of described solar photovoltaic generation system, and has reduced maintenance cost.
In order to increase reliability further, preferably, also comprise the redundant drive part, described redundant drive partly comprises: motor drive module A, motor drive module B, selector switch, double generator redundancy module and limit switch, wherein, described motor drive module A and motor drive module B are connected to described selector switch simultaneously, described selector switch is connected to described double generator redundancy module, described double generator redundancy module output shaft is connected to limit switch, limit switch is controlled described normally closed switch, described normally closed switch connects the input power supply of motor drive module A and motor drive module B, and described motor drive module A and motor drive module B are connected respectively to master control system A and standby system B again, and described master control system A is connected respectively with standby system B and controls described motor drive module A and motor drive module B.
Further, preferably, described double generator redundancy module comprises: main drive motor, standby motor and engagement output module, main drive motor is two identical motors of model with standby motor, wherein, described main drive motor and standby motor output to power on the universal driving shaft of link gear of tracker by described engagement output module respectively.
Further, preferably, also be provided with artificial/automatic transfer switch, described engagement output module by described automatically/the manual switching switch controls by described main drive motor or described standby motor outputting power.
Further, preferably, described selector switch is the combination of single relay or relay.
Further, preferably, the main drive motor in the described double generator redundancy module and standby motor are turning motor or electric pushrod or lifting motor.
Further, preferably, the engagement output module in the described double generator redundancy module is the engagement system of spiral gear engagement or conical gear engagement or spur gear engagement.
Further, preferably, also comprise the redundant power part, wherein, described redundant power partly comprises: power module A, power module B, AC/DC converter A, AC/DC converter B, wherein, described power module A and power module B parallel connection, described AC/DC converter A and AC/DC converter B parallel connection, and the input termination alternating current of the power module A of described parallel connection and power module B, output terminal divides two-way, one the tunnel directly gives motor drive module A and motor drive module B power supply, another road meets AC/DC converter A and the AC/DC converter B of described parallel connection, and the direct current of the output of described AC/DC converter A and AC/DC converter B is connected to described master control system A, standby system B and obliquity sensor A and obliquity sensor B.
The present invention has improved the reliability of the flat uniaxiality tracking device of described solar photovoltaic generation system further, and has reduced maintenance cost.
Other features and advantages of the present invention will be set forth in the following description, and, partly from instructions, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the instructions of writing, claims and accompanying drawing.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in detail, so that above-mentioned advantage of the present invention is clearer and more definite.Wherein,
Fig. 1 is the module diagram of the flat uniaxiality tracking device of solar photovoltaic generation system of the present invention;
Fig. 2 is the operational flow diagram of the flat uniaxiality tracking device of solar photovoltaic generation system of the present invention.
Wherein, 1, power module A, 2, power module B, 3, AC/DC converter A, 4, AC/DC converter B, 5, motor drive module A, 6, motor drive module B, 7, selector switch, 8, the redundant machine module of two electricity, 9, limit switch, 10, normally closed switch, 11, master control system A, 12, standby system B, 13, obliquity sensor A, 14, obliquity sensor B, 15, the alternating current input, 16, main drive motor, 17, standby motor, 18, the engagement output module.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the application technology means solve technical matters to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.Need to prove that only otherwise constitute conflict, each embodiment among the present invention and each feature among each embodiment can mutually combine, formed technical scheme is all within protection scope of the present invention.
Specifically, the present invention is primarily aimed at the not high enough problem of flat uniaxiality tracking device reliability of the prior art, and a kind of redundant flat uniaxiality tracking device that has is provided, and it can guarantee that system moves stably in a long term, reduces maintenance cost greatly.
Wherein, specifically, as shown in Figure 2, the flat uniaxiality tracking device of solar photovoltaic generation system of the present invention, mainly comprise common flat uniaxiality tracking device support and link gear, in a preferred embodiment, it has also comprised redundant drive part, Redundant Control part and redundant power supply part, certainly, above-mentioned three redundant drive part, Redundant Control part and redundant power supply part can be respectively as the improvement of this system, can be than the functional reliability height of existing common flat uniaxiality tracking device.
Specifically, in a preferred embodiment, the Redundant Control part of the flat uniaxiality tracking device of described solar photovoltaic generation system, comprise: master control system A11, standby system B12, obliquity sensor A13, obliquity sensor B14, wherein, described obliquity sensor A13 and obliquity sensor B14 are installed in the dip plane of described tracker respectively or follow the tracks of on the support, and pointing direction is perpendicular to solar panel, and, described obliquity sensor A is connected to master control system A again, described obliquity sensor B is connected to standby system B again, and described master control system A and standby system B are connected to each other and two-way communicating.
Wherein, its working method simply is described below:
When described master control system A detects obliquity sensor A fault, the master control system A data that communication obtains obliquity sensor B with standby system B are used, and master control system A sends obliquity sensor A failure alarm signal to external bus simultaneously.
A breaks down when master control system, standby system B can detect when being master control system A communication, standby system B namely obtains control, utilizes the data of Backup Data and the obliquity sensor B of master control system A, and the control selector switch switches to motor drive module B and carries out work.
Wherein, among embodiment, obliquity sensor A breaks down, this fault refer to master control system A can not from obliquity sensor obtain angle-data difference that angle-data that inclination data or master control system A obtain from obliquity sensor A and standby system B obtain from obliquity sensor B reach 1 spend more than.
In this embodiment, owing to increased described Redundant Control part, and described master control system A and standby system B is connected to each other and two-way communicating, thus, it has improved the reliability of the flat uniaxiality tracking device of described solar photovoltaic generation system, and has reduced maintenance cost.
Specifically be described in detail, in an embodiment, described master control system A and standby system B are two designs and the duplicate circuit board of interface, wherein, described circuit board adopts microprogram control unit MCU or programmable logic controller (PLC) PLC as main control chip, and critical piece can be identical with master control system of the prior art, and, the realization logic of MCU or PLC inside belongs to that those skilled in the art can implement, and specific design logic and the structure of inside is not elaborated at this.
Wherein, in order to increase reliability further, in the preferred embodiment, also increase the redundant drive part is arranged, wherein, described redundant drive partly comprises: motor drive module A5, motor drive module B6, selector switch 7, double generator redundancy module 8 and limit switch 9, wherein, described motor drive module A and motor drive module B are connected to described selector switch simultaneously, described selector switch is connected to described double generator redundancy module, described double generator redundancy module output shaft is connected to limit switch 9, limit switch is controlled described normally closed switch 10, described normally closed switch connects the input power supply of motor drive module A5 and motor drive module B6, and described motor drive module A and motor drive module B are connected respectively to master control system A and standby system B again, and described master control system A is connected respectively with standby system B and controls described motor drive module A and motor drive module B.
Further, preferably, described double generator redundancy module comprises: main drive motor 16, standby motor 17 and engagement output module 18, wherein, described main drive motor is two identical motors of model with standby motor, wherein, described main drive motor and standby motor output to power on the universal driving shaft of link gear of tracker by described engagement output module respectively.
Further, preferably, also be provided with artificial/automatic transfer switch, described engagement output module by described automatically/the manual switching switch controls by described main drive motor or described standby motor outputting power.
Further, preferably, described selector switch is the combination of single relay or relay.
Further, preferably, the main drive motor in the described double generator redundancy module and standby motor are turning motor or electric pushrod or lifting motor.
Further, preferably, the engagement output module in the described double generator redundancy module is the engagement system of spiral gear engagement or conical gear engagement or spur gear engagement.
Wherein, when described motor drive module A breaks down, after detecting, master control system A namely notifies standby system B, standby system B obtains control, the Backup Data that utilization obtains from master control system A, switch to motor drive module B by the control selector switch and carry out work, master control system A sends motor drive module A failure alarm signal to external bus simultaneously.
In addition, in the described redundant drive part, when described motor A breaks down, switch on the interface of motor B correspondence by automatically/manually motor A being gone up all power supply and control interfaces, and by automatically/manually the engagement output module being switched on the motor B by motor A.
In addition, when one of them motor drive module breaks down, switch to the normal motor drive module in another road by the control section command selector and carry out work.
Motor drive module A and motor drive module B are connected to described selector switch simultaneously, described selector switch is connected to described double generator redundancy module, described double generator redundancy module output shaft is connected to limit switch, limit switch is controlled described normally closed switch, described normally closed switch connects the input power supply of motor drive module A and motor drive module B, and described motor drive module A and motor drive module B are connected respectively to master control system again
In addition, in a preferred embodiment, also increased the redundant power part, wherein, described redundant power partly comprises: power module A1, power module B2, AC/DC converter A4, AC/DC converter B5, and described power module A and power module B parallel connection, described AC/DC converter A and AC/DC converter B parallel connection, and the input termination alternating current 15 of the power module A of described parallel connection and power module B, output terminal divides two-way, one the tunnel directly gives motor drive module A and motor drive module B power supply, another road meets AC/DC converter A and the AC/DC converter B of described parallel connection, and the direct current of the output of described AC/DC converter A and AC/DC converter B is connected to described master control system A, standby system B and obliquity sensor A and obliquity sensor B.
Wherein, each power module and each AC/DC converter can be supported the operation of total system separately.Therefore when occurring a power module damage or an AC/DC converter damage in the power pack, system can also normally move.
In specific embodiment, when system initially powered on, selector switch switched to motor drive module A, drove main drive motor by motor drive module A and carried out work.
In addition, in specific embodiment, described power module A is the same supply unit of specifications parameter with power module B, and satisfies any one tunnel energy consumption that just can satisfy total system.It generally comprises functions such as lightning protection device, uninterrupted power supply (ups) Unity.
And, described AC/DC converter A is the same AC/DC converter of specifications parameter with AC/DC converter B, and the output rating of any one tunnel AC/DC converter is all greater than the required galvanic consumed power of total system, by above-mentioned design, satisfy the requirement of the power supply reliability of flat uniaxiality tracking device, had good effect.
Specifically, the implementation of described redundant power supply part is as follows:
The input/output terminal of power module A and B is direct parallel connection, when one of them breaks down, be equivalent to open circuit, then electric current can be directly from another road by not influencing operate as normal, the information that is out of order is given on that road of lightning protection device fault simultaneously.
The input end of AC/DC converter is in parallel, and output terminal is provided with anti-backflow device, when one of them AC/DC converter damages when disconnecting, also has another road AC/DC converter can operate as normal; When one of them AC/DC converter damaged short circuit, because prevent backflow device, another AC/DC converter equally can operate as normal.
In addition, above-mentioned master control system (control system) is elaborated, namely works as motor drive module A and break down, the control selector switch switched after control system obtained this information, carried out work by motor drive module B; When main drive motor breaks down, control system can be controlled switching mechanism and automatically corresponding electrical interface and mechanical interface be switched on the standby motor, perhaps send prompting by control system, by manually switching, and when drive motor moved the restriction position, limit switch is had an effect, the input power supply of motor drive module is cut off in control, and drive system is out of service.
And when motor runs to the ultralimit position, limit switch makes the input power supply be cut off, and motor quits work, and master control system A obtains the signal that limit switch is had an effect simultaneously, and master control system A sends the limit switch failure alarm signal to external bus.
In certain concrete enforcement scene, wherein, be provided with control box, wherein, the core that comprises in the control box has: motor drive module A, motor drive module B, master control system A, standby system B, and main drive motor is installed in system middle part, connecting flat single shaft driving shaft, standby drive motor is arranged on the main drive motor next door as backup, and control box is arranged on the below of drive motor.
Some other necessary parts that two driver modules, two power modules, master control system and standby systems arranged in the control box and connect between them.In the enforcement scene of this example, obliquity sensor A and obliquity sensor B are installed in respectively on the panel of diagonal positions of system.
As shown in Figure 2, the redundant implementation of whole tracker is as follows:
Shown in the process flow diagram of Fig. 2, starter system powers on, and acquiescence master control system A drives closed, and standby system B is suspended.
Master control system A and standby system B obtain inclination data from separately obliquity sensor.
Master control system A and standby system B utilize astronomical algorithm to carry out the calculating of solar angle separately.
Master control system A and standby system B carry out the self check task run separately.
Master control system A and standby system B communicate information such as exchange inclination angle, clock, solar angle, self check fault.
Master control system A and standby system B judge in the information of exchange whether failure message is arranged, and failure message described herein comprises: both inclination data, clock data, solar angle data differ surpass 5% or one of them system receive the other side's system prompt fault.
When master control system A detects the fault of various data errors, then master control system A sends fault and is prompted to the maintainer, and system still moves according to master control system A.
When standby system B detects the master control A system failure, switch to motor drive module B at the B of system control selector switch and carry out work, serve as master control system by standby system B and carry out work this moment, and while standby system B sends the failure message of master control system A and notifies the maintainer.
A breaks down when motor drive module, and master control system A sends instructions to standby system B, and by standby system B control selector switch, power supply switches to motor drive module B work, and master control system A sends the failure message prompting of motor drive module A simultaneously.After the fault of motor drive module A is got rid of, switch to motor drive module A again and carry out work.
A breaks down when obliquity sensor, and then master control system A is by obtaining the obliquity information of obliquity sensor B with the information interchange of standby system B.Master control system A sends the fault information of obliquity sensor A simultaneously.
When master control system A intercoms mutually with standby system B, when detecting master control system A, standby system B breaks down, then standby system B acquire the right of control, and standby system B control selector switch switches to motor drive module B and carries out work.
When main drive motor breaks down, master control system is sent the fault prompting in this example, by the maintainer electrical interface of main drive motor is switched on the standby drive motor, again motor and flat single shaft driving shaft being connected to part switches on the standby drive motor from main drive motor, system gets final product operate as normal, and then carries out replacing or the maintenance of main drive motor.
In some other example, main drive motor breaks down, and also can be controlled electrical interface and the mechanical interface of automatic switchover main drive motor and backup drive motor by control system.
The present invention has realized redundancy backup from many aspects such as power supply, driving, controls, has improved the reliability of common flat uniaxiality tracking device greatly, and the cost increase is compared the maintenance cost of minimizing and can be ignored, and has extraordinary technique effect thus.
Wherein, need to prove that the master control system A in this enforcement or standby system B can adopt closed-loop control, for example, master control system A calculates solar angle according to algorithm, and the output control signal is given motor drive module A, and drive motor is adjusted the inclination angle of flat one-axis system.Obtain data from obliquity sensor A simultaneously, feed back to master control system A and carry out closed-loop control.
And also can adopt open loop control: master control system A calculates solar angle according to algorithm, and the output control signal is given motor drive module A, and drive motor is adjusted the inclination angle of flat one-axis system.This moment, system did not comprise obliquity sensor.
Wherein, master control system A and standby system B intercom at regular intervals mutually, the motor drive module state of switching clock data, obliquity sensor data, connection separately etc., and when master control system A and standby system B detect standby system B when intercoming mutually fault is arranged, then send alerting signal to external bus, notify the maintainer to check.
And, when master control system A and standby system B when intercoming mutually, standby system B detects master control system A fault, then standby system B intervention obtains system's control, the normal operation of assurance system is sent alerting signal to external bus simultaneously, notifies the maintainer to check.
In addition, after the maintainer gets rid of the system failure, system is carried out electrification reset again, this moment, master control system A obtained the control of system again, and standby system B continues to serve as standby role.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the flat uniaxiality tracking device of a solar photovoltaic generation system, comprise flat uniaxiality tracking support and link gear, it is characterized in that, also comprise the Redundant Control part, described Redundant Control partly comprises: master control system A, standby system B, obliquity sensor A, obliquity sensor B, wherein, described obliquity sensor A and obliquity sensor B are installed in the dip plane of described tracker respectively or follow the tracks of on the support, and pointing direction is perpendicular to solar panel, described obliquity sensor A is connected to master control system A again, described obliquity sensor B is connected to standby system B again, and described master control system A and standby system B are connected to each other and two-way communicating.
2. according to the flat uniaxiality tracking device of the described solar photovoltaic generation system of claim 1, it is characterized in that described master control system A and standby system B are connected to long distance control system by external bus.
3. the flat uniaxiality tracking device of solar photovoltaic generation system according to claim 1 and 2, it is characterized in that, wherein said master control system A and standby system B are two designs and the duplicate circuit board of interface, wherein, described circuit board adopts microprogram control unit MCU or programmable logic controller (PLC) PLC as main control chip.
4. the flat uniaxiality tracking device of solar photovoltaic generation system according to claim 1 and 2, it is characterized in that, also comprise the redundant drive part, described redundant drive partly comprises: motor drive module A, motor drive module B, selector switch, double generator redundancy module and limit switch, wherein, described motor drive module A and motor drive module B are connected to described selector switch simultaneously, described selector switch is connected to described double generator redundancy module, described double generator redundancy module output shaft is connected to limit switch, limit switch is controlled described normally closed switch, described normally closed switch connects the input power supply of motor drive module A and motor drive module B, and described motor drive module A and motor drive module B are connected respectively to master control system A and standby system B again, and described master control system A is connected respectively with standby system B and controls described motor drive module A and motor drive module B.
5. the flat uniaxiality tracking device of solar photovoltaic generation system according to claim 4, it is characterized in that, described double generator redundancy module comprises: main drive motor, standby motor and engagement output module, main drive motor is two identical motors of model with standby motor, wherein, described main drive motor and standby motor output to power on the universal driving shaft of link gear of tracker by described engagement output module respectively.
6. the flat uniaxiality tracking device of solar photovoltaic generation system according to claim 5, it is characterized in that, also be provided with artificial/automatic transfer switch, described engagement output module by described automatically/the manual switching switch controls by described main drive motor or described standby motor outputting power.
7. the flat uniaxiality tracking device of solar photovoltaic generation system according to claim 4 is characterized in that, described selector switch is the combination of single relay or relay.
8. the flat uniaxiality tracking device of solar photovoltaic generation system according to claim 5 is characterized in that, the main drive motor in the described double generator redundancy module and standby motor are turning motor or electric pushrod or lifting motor.
9. the flat uniaxiality tracking device of solar photovoltaic generation system according to claim 5 is characterized in that, the engagement output module in the described double generator redundancy module is the engagement system of spiral gear engagement or conical gear engagement or spur gear engagement.
10. the flat uniaxiality tracking device of solar photovoltaic generation system according to claim 1 and 2 is characterized in that, also comprises the redundant power part, wherein, described redundant power partly comprises: power module A, power module B, AC/DC converter A, AC/DC converter B, wherein
Described power module A and power module B parallel connection, described AC/DC converter A and AC/DC converter B parallel connection, and the input termination alternating current of the power module A of described parallel connection and power module B, output terminal divides two-way, one the tunnel directly gives motor drive module A and motor drive module B power supply, another road meets AC/DC converter A and the AC/DC converter B of described parallel connection, and the direct current of the output of described AC/DC converter A and AC/DC converter B is connected to described master control system A, standby system B and obliquity sensor A and obliquity sensor B.
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| CN104579114A (en) * | 2014-12-26 | 2015-04-29 | 青岛歌尔声学科技有限公司 | Motor drive protection circuit and electrical products with same |
| CN104579114B (en) * | 2014-12-26 | 2018-01-30 | 青岛歌尔声学科技有限公司 | A kind of motor driven protective circuit and the electric equipment products with the circuit |
| CN104656685A (en) * | 2015-02-04 | 2015-05-27 | 上海津信变频器有限公司 | Array type solar oblique-axis tracking device |
| CN107085439A (en) * | 2017-03-01 | 2017-08-22 | 江苏国电铁塔有限公司 | Photovoltaic tracking support array redundancy control method and control device |
| CN108803674A (en) * | 2018-06-11 | 2018-11-13 | 太原科技大学 | A kind of polar axis photovoltaic array power generation single shaft tracking apparatus and its control method |
| CN108803674B (en) * | 2018-06-11 | 2021-03-09 | 太原科技大学 | Polar axis photovoltaic array power generation single-axis tracking device and control method thereof |
| CN110737286A (en) * | 2019-08-23 | 2020-01-31 | 中国电建集团华东勘测设计研究院有限公司 | flat single-axis tracking support with adjustable inclination angle in north-south direction of photovoltaic module |
| CN110737286B (en) * | 2019-08-23 | 2022-09-27 | 中国电建集团华东勘测设计研究院有限公司 | Flat single-axis tracking support with adjustable inclination angle in north-south direction of photovoltaic module |
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