CN201946989U - Display and communication controller for photovoltaic grid-connected inverter - Google Patents

Display and communication controller for photovoltaic grid-connected inverter Download PDF

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Publication number
CN201946989U
CN201946989U CN2010206443744U CN201020644374U CN201946989U CN 201946989 U CN201946989 U CN 201946989U CN 2010206443744 U CN2010206443744 U CN 2010206443744U CN 201020644374 U CN201020644374 U CN 201020644374U CN 201946989 U CN201946989 U CN 201946989U
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central processing
processing unit
inverter
bus
letter
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CN2010206443744U
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Inventor
张美娟
徐志武
孙丽娜
冯异
周权生
潘佳南
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Shanghai Dianke Electrical Technology Co Ltd
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Shanghai Dianke Electrical Technology Co Ltd
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    • 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
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The utility model discloses a display and communication controller for a photovoltaic grid-connected inverter, comprising a central processing unit (CPU), an inversion controller, a data acquisition unit, a memory, an extended real-time clock and a real-time clock back-up power supply, a group of indicator lights, a liquid crystal display and a display driver, a buzzer, and a group of keys, wherein the CPU is provided with a group of bus interfaces, the inversion controller is used for converting direct-current electric energy of a solar photovoltaic cell module into alternating-current electric energy with frequency and phase the same as those of a power grid, the data acquisition unit communicates with the CPU through an RS485 bus or a CAN bus, the memory is used for storing parameter settings, the group of indicator lights is used for indicating the working state, the liquid crystal display is used for displaying information related to the running of the inverter, the buzzer is used for giving an alarm by buzzing, and the group of keys is used for receiving external input control. The display and communication controller adopts the 32-bit high-speed CPU as a main chip for control, thus being high in data transmission speed, safe and reliable in periphery, and diversified in communication modes, and a display screen can display characters, patterns and the like, and provide a vivid man-machine communication interface, so as to be convenient for users and staff to understand the running conditions of the inverter in real time.

Description

The demonstration of photovoltaic combining inverter and communication controler
Technical field
The utility model relates to the control technology field of photovoltaic combining inverter, more particularly, relates to a kind of demonstration and communication controler of photovoltaic combining inverter.
Background technology
Nowadays world energy sources shortage, problem of environmental pollution are serious day by day, and in order to alleviate the energy and environmental problem, the research grid-connected photovoltaic system is of great immediate significance.In order well to monitor the ruuning situation of photovoltaic combining inverter, the demonstration and the communication controler of a photovoltaic combining inverter are necessary.
The demonstration of the photovoltaic combining inverter that uses in the prior art and communication controler have following shortcoming:
1) generally adopt 8 low speed single-chip microcomputers as master chip, transmitted data amount is few and speed is slow.
2) generally adopt the single mode of master-slave mode to communicate, the communication mode underaction also can't be realized high-speed communication.
3) can not provide a close friend's man-machine display interface.General display interface content is few, only can show some simple parameters and fault message; Can not come video data information with the figure of image; Screen is less, needs page turning continually when making Query Information; Memory capacity is limited, can not the query history record.
The utility model content
At the deficiencies in the prior art, the utility model is intended to propose a kind of high-speed chip that has, and the demonstration and the communication controler of the photovoltaic combining inverter of friendly display interface can be provided.
According to the utility model, a kind of demonstration and communication controler of photovoltaic combining inverter proposed, comprising:
Central processing unit, central processing unit have one group of bus interface, by the demonstration of bus and photovoltaic combining inverter and each components communicate in the communication controler;
Inverter controller is connected to central processing unit, and inverter controller is converted into the direct current energy of solar photovoltaic battery component and electrical network same frequency, synchronous alternating current, and inverter controller is communicated by letter with central processing unit;
Data acquisition unit is communicated by letter with central processing unit by RS485 bus or CAN bus, and data acquisition unit is gathered the information of inverter;
Memory is connected to central processing unit and communicates by letter the setting of memory stores parameter with central processing unit;
Extend out real-time clock and real-time clock back-up source, be connected to central processing unit, extend out real-time clock and power by the real-time clock back-up source;
One group of indicator light is connected indicating operating status with central processing unit;
LCD and display driver are connected to central processing unit and communicate by letter with central processing unit, the information that liquid crystal display displays is relevant with invertor operation;
Buzzer is connected with central processing unit and communicates by letter with central processing unit, and buzzer carries out buzzing and reports to the police;
One group of button is connected to central processing unit and communicates by letter with central processing unit, and button is accepted outside input control.
This central processing unit is 32 high speed central processing units.
Data acquisition unit is connected to the RS485 bus interface of central processing unit by the RS485 bus, communicates by letter with central processing unit with the master-slave mode communication mode.Perhaps, data acquisition unit is connected to the CAN bus interface of central processing unit by the CAN bus, communicates by letter with central processing unit with how main formula communication mode.The information that data acquisition unit is gathered inverter comprises: version number, operation information, accumulative total operation information, current fault message and running status, the higher limit that protection parameter and write protection parameter are set and lower limit, switching on and shutting down setting, language setting, password setting etc.
Memory is E 2PROM passes through I 2The C bus is connected to the I of central processing unit 2The C bus interface is communicated by letter with central processing unit.
One group of indicator light comprises 4 LED light, and the operating state of indication comprises operation, standby, shutdown, fault etc.
LCD has 128 * 128 display dot.
One group of button comprises 6 buttons: UP button, DOWN button, ADD button, DEC button, CANCEL button and ENTER button.
The demonstration of photovoltaic combining inverter of the present utility model and communication controler adopt 32 high-speed CPUs to control as master chip, data transmission bauds is fast, peripheral safe and reliable, diversity communication mode, display screen energy character display and pattern etc., the man-machine communication's of image interface is provided, is convenient to the ruuning situation that user and staff can understand inverter in real time.
Description of drawings
The above and other feature of the utility model, character and advantage will become more obvious by the description below in conjunction with drawings and Examples.Wherein:
Fig. 1 has disclosed according to the demonstration of the photovoltaic combining inverter of an embodiment of the present utility model and the circuit block diagram of communication controler.
Embodiment
The utility model is intended to propose a kind of demonstration and communication controler of photovoltaic combining inverter, comprises following parts: central processing unit, inverter controller, data acquisition unit, memory, extend out real-time clock and real-time clock back-up source, one group of indicator light, LCD and display driver, buzzer and one group of button.
Central processing unit has one group of bus interface, by the demonstration of bus and photovoltaic combining inverter and each components communicate in the communication controler.Central processing unit can have such as RS485, CAN, I 2The polytype bus interface of C or the like.In the utility model, central processing unit adopts 32 high-speed CPUs to realize.
Inverter controller is connected to central processing unit, and inverter controller is converted into the direct current energy of solar photovoltaic battery component and electrical network same frequency, synchronous AC energy, and inverter controller is communicated by letter with central processing unit.
Data acquisition unit is communicated by letter with central processing unit by RS485 bus or CAN bus, and data acquisition unit is gathered the information of inverter.Data acquisition unit can be communicated by letter with central processing unit with different communication modes, for example, can adopt the master-slave mode communication mode, and at this moment, data acquisition unit is connected to the RS485 bus interface of central processing unit by the RS485 bus.Data acquisition unit also can adopt how main formula communication mode to communicate by letter with central processing unit, and at this moment, data acquisition unit is connected to the CAN bus interface of central processing unit by the CAN bus.The information that data acquisition unit is gathered inverter comprises: version number, operation information, accumulative total operation information, current fault message and running status, the higher limit that protection parameter and write protection parameter are set and lower limit, switching on and shutting down setting, language setting, password setting etc.
Memory is connected to central processing unit and communicates by letter with central processing unit, and the memory stores parameter is provided with.Memory is E 2PROM passes through I 2The C bus is connected to the I of central processing unit 2The C bus interface is communicated by letter with central processing unit.
Extend out real-time clock and real-time clock back-up source, be connected to central processing unit, extend out real-time clock and power by the real-time clock back-up source.
One group of indicator light is connected indicating operating status with central processing unit.This group of indicator light comprises 4 LED light, and the operating state of indication comprises operation, standby, shutdown, fault etc.
LCD and display driver are connected to central processing unit and communicate by letter with central processing unit, the information that liquid crystal display displays is relevant with invertor operation.This LCD is a large screen display, has 128 * 128 display dot.
Buzzer is connected with central processing unit and communicates by letter with central processing unit, and buzzer carries out buzzing and reports to the police;
One group of button is connected to central processing unit and communicates by letter with central processing unit, and button is accepted outside input control.This group of button comprises 6 buttons: UP button, DOWN button, ADD button, DEC button, CANCEL button and ENTER button.
Fig. 1 has disclosed according to the demonstration of the photovoltaic combining inverter of an embodiment of the present utility model and the circuit block diagram of communication controler, and shown in the embodiment of Fig. 1, the demonstration and the communication controler of this photovoltaic combining inverter comprise:
Central processing unit 101, central processing unit 101 are 32 high-speed CPUs, and central processing unit 101 is the demonstration of whole photovoltaic combining inverter and the core of communication controler.Central processing unit 101 provides a series of bus interface, comprises being used for the RS485 bus interface and the CAN bus interface of communicating by letter with control inverter 102, the I that communicates by letter with memory 103 2The C bus interface.Central processing unit 101 also provides and has connected interface that extends out real-time clock and clock back-up source and the interface that connects indicator light, LCDs, buzzer and button.
Inverter controller 102 is inversion control devices of photovoltaic generating system, is used for the direct current energy of solar photovoltaic battery component is converted into and electrical network same frequency, synchronous AC energy, and a part is given local electric, dump power feed-in electrical network.Inverter controller 102 is connected communication with central processing unit 101, and its operational factor shows in LCD by display driver, is convenient to the ruuning situation that user and staff monitor inverter.
Memory 103 is used to write down every parameter that is provided with, and memory 103 is E 2Prom memory passes through I 2The C bus is connected to central processing unit.
Data acquisition unit (Datalogger) 104 is gathered the operational factor of inverter and is communicated by letter with central processing unit 101.Data acquisition unit 104 can be the master-slave mode communication mode with the communication mode of central processing unit 101, also can be how main formula communication mode.Adopting the master-slave mode communication mode is by the RS485 bus inverter to be carried out group-net communication, has that the high communication quality, speed are fast, the advantage of long transmission distance.Adopting how main formula communication mode is by the CAN bus inverter to be carried out group-net communication, the communication mode of many main formulas make any one inverter on the bus all can be at any time initiatively the data acquisition unit on network send information, and be regardless of the principal and subordinate, carry out in can also netting point-to-point, a bit to multiple spot and the multiple communication mode of overall situation broadcasting, realized inverter group-net communication more flexibly.104 pairs of inverters of data acquisition unit have carried out following transfer of data: version number, operation information, accumulative total operation information, current fault message and running status, the higher limit that protection parameter and write protection parameter are set and lower limit, switching on and shutting down setting, language setting, password setting etc.
Real-time clock 105 that extends out and real-time clock back-up source 106 are connected with central processing unit 101, and real-time clock back-up source 106 is to real-time clock 105 power supplies that extend out, and clock continues operation after the assurance power down, has power-down protection.
4 LED light 108, be connected with central processing unit 101, LED light 108 is used for the operating state of indicating module operation, comprise: operation (inverter is normally in service), standby (inverter is in holding state), shutdown (inverter quits work), fault (fault has appearred in inverter module).
Driving governor 109 and LCD 110, LCD 110 have 128 * 128 display dot, and display screen is big, do not need frequent page turning and clear display, have character and pattern Presentation Function.When inverter was worked, display screen showed the dynamic operation parameter of inverter in real time, also can show the cumulant of invertor operation situation simultaneously with the form of block diagram; The content of storage comprises every operation information of current inverter module, concrete fault message or failure code in the running; The Control Parameter of inverter also can be set by display screen.Have very friendly man-machine display interface, interactivity is good, and is easy to use, stable performance.The communication data of the inner demonstration of inverter and Control on Communication and inverter controller has: operation information, alarm signal.
Buzzer 111 is connected with central processing unit 101, is used for fault alarm.When error message occurring, buzzer will carry out buzzing reports to the police, and reminds user and staff to have fault to occur at this moment, also has the prompting of fault message simultaneously on display screen.
Independent button 112 is outside input control sections of this module, comprises 6 buttons: UP button, DOWN button, ADD button, DEC button, CANCEL button, ENTER button.
The demonstration of photovoltaic combining inverter of the present utility model and communication controler adopt 32 high-speed CPUs, have that data processing speed is fast, extensibility is strong, it is simple to realize, characteristics such as stable performance, low in energy consumption, long service life.The demonstration of this photovoltaic combining inverter and communication controler provide two kinds of external communication interfaces for inverter: RS485 bus interface and CAN bus interface have that data transmission bauds is fast, the characteristics of diversity communication mode.And controller has very friendly man-machine display interface, and interactivity is good, and is easy to use.
Sum up, the demonstration and the communication controler of this photovoltaic combining inverter have the following advantages:
1) adopts 32 high speed C PU controls to realize the display communication function of photovoltaic DC-to-AC converters, have that data processing speed is fast, extensibility is strong, it is simple to realize, characteristics such as stable performance, low in energy consumption, long service life.
2) diversity communication mode, and speed is fast.In photovoltaic combining inverter inside, show with communication controler it is to set up with inverter controller by high-speed internal bus (SPI) to communicate by letter.Show with communication controler and provide two kinds of external communication interfaces: RS485 bus interface and CAN bus interface for inverter.Data acquisition unit (Datalogger) can be taked the master-slave mode communication mode, promptly by the RS485 bus inverter is carried out group-net communication, has that the high communication quality, speed are fast, the advantage of long transmission distance; Data acquisition unit (Datalogger) also can be taked how main formula communication mode, promptly inverter is carried out group-net communication by the CAN bus, the communication mode of many main formulas make any one inverter on the bus all can be at any time initiatively the data acquisition unit on network send information, and be regardless of the principal and subordinate, carry out in can also netting point-to-point, a bit to multiple spot and the multiple communication mode of overall situation broadcasting, realized inverter group-net communication more flexibly.
3) have very friendly man-machine display interface, interactivity is good, and is easy to use.Display screen adopts the lattice liquid crystal display screen, and it is big to have a display screen, does not need the characteristics of frequent page turning and clear display; The dynamic operation parameter that can show inverter in real time, and show the ruuning situation of inverter with the form of block diagram, be convenient to observation analysis, deal with data; Show with communication controler to have memory function, can write down operation information and the fault message of inverter in setting-up time; Operating personnel can operate accordingly according to button, and operating process and operating result can both show in display screen clearly.
The demonstration of photovoltaic combining inverter of the present utility model and communication controler can make the demonstration of inverter and communication control unit branch obtain very big change under the few situation of infusion of financial resources, more help the use to inverter.

Claims (8)

1. the demonstration of a photovoltaic combining inverter and communication controler is characterized in that, comprising:
Central processing unit, central processing unit have one group of bus interface, by the demonstration of bus and photovoltaic combining inverter and each components communicate in the communication controler;
Inverter controller is connected to central processing unit, and inverter controller is converted into the direct current energy of solar photovoltaic battery component and electrical network same frequency, synchronous AC energy, and inverter controller is communicated by letter with central processing unit;
Data acquisition unit is communicated by letter with central processing unit by RS485 bus or CAN bus, and data acquisition unit is gathered the information of inverter;
Memory is connected to central processing unit and communicates by letter the setting of memory stores parameter with central processing unit;
Extend out real-time clock and real-time clock back-up source, be connected to central processing unit, extend out real-time clock and power by the real-time clock back-up source;
One group of indicator light is connected indicating operating status with central processing unit;
LCD and display driver are connected to central processing unit and communicate by letter with central processing unit, the information that liquid crystal display displays is relevant with invertor operation;
Buzzer is connected with central processing unit and communicates by letter with central processing unit, and buzzer carries out buzzing and reports to the police;
One group of button is connected to central processing unit and communicates by letter with central processing unit, and button is accepted outside input control.
2. the demonstration of photovoltaic combining inverter as claimed in claim 1 and communication controler is characterized in that,
Described central processing unit is 32 high speed central processing units.
3. the demonstration of photovoltaic combining inverter as claimed in claim 1 and communication controler is characterized in that,
Described data acquisition unit is connected to the RS485 bus interface of central processing unit by the RS485 bus, communicates by letter with central processing unit with the master-slave mode communication mode.
4. the demonstration of photovoltaic combining inverter as claimed in claim 1 and communication controler is characterized in that,
Described data acquisition unit is connected to the CAN bus interface of central processing unit by the CAN bus, communicates by letter with central processing unit with how main formula communication mode.
5. the demonstration of photovoltaic combining inverter as claimed in claim 1 and communication controler is characterized in that,
Described memory is E 2PROM passes through I 2The C bus is connected to the I of central processing unit 2The C bus interface is communicated by letter with central processing unit.
6. the demonstration of photovoltaic combining inverter as claimed in claim 1 and communication controler is characterized in that,
Described one group of indicator light comprises 4 LED light, and the operating state of indication comprises operation, standby, shutdown, fault etc.
7. the demonstration of photovoltaic combining inverter as claimed in claim 1 and communication controler is characterized in that,
Described LCD has 128 * 128 display dot.
8. the demonstration of photovoltaic combining inverter as claimed in claim 1 and communication controler is characterized in that,
Described one group of button comprises 6 buttons: UP button, DOWN button, ADD button, DEC button, CANCEL button and ENTER button.
CN2010206443744U 2010-12-07 2010-12-07 Display and communication controller for photovoltaic grid-connected inverter Expired - Lifetime CN201946989U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102735978A (en) * 2012-07-13 2012-10-17 云南北方光电仪器有限公司 Computer on-line debugging method for grid-connected inverter
CN102983769A (en) * 2012-12-07 2013-03-20 云南储光科技有限公司 Distributed naturally-cooling photovoltaic inverter system
CN103178542A (en) * 2013-03-12 2013-06-26 南京南瑞太阳能科技有限公司 Distributed power grid-connection interface system and control method thereof
CN103308089A (en) * 2012-03-06 2013-09-18 艾默生过程控制流量技术有限公司 Transducer with aural prompting device
CN104021325A (en) * 2014-05-30 2014-09-03 江苏兆伏新能源有限公司 Locking and unlocking method for inverter
CN106873730A (en) * 2017-03-20 2017-06-20 江苏师范大学 A kind of photovoltaic data collection process device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308089A (en) * 2012-03-06 2013-09-18 艾默生过程控制流量技术有限公司 Transducer with aural prompting device
CN102735978A (en) * 2012-07-13 2012-10-17 云南北方光电仪器有限公司 Computer on-line debugging method for grid-connected inverter
CN102735978B (en) * 2012-07-13 2014-10-29 云南北方光电仪器有限公司 Computer on-line debugging method for grid-connected inverter
CN102983769A (en) * 2012-12-07 2013-03-20 云南储光科技有限公司 Distributed naturally-cooling photovoltaic inverter system
CN102983769B (en) * 2012-12-07 2016-03-30 云南储光科技有限公司 One is distributed cools photovoltaic inverter system naturally
CN103178542A (en) * 2013-03-12 2013-06-26 南京南瑞太阳能科技有限公司 Distributed power grid-connection interface system and control method thereof
CN103178542B (en) * 2013-03-12 2015-05-13 南京南瑞太阳能科技有限公司 Control method of distributed power grid-connection interface system
CN104021325A (en) * 2014-05-30 2014-09-03 江苏兆伏新能源有限公司 Locking and unlocking method for inverter
CN106873730A (en) * 2017-03-20 2017-06-20 江苏师范大学 A kind of photovoltaic data collection process device

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Granted publication date: 20110824