CN203301167U - Photovoltaic power generation controller based on multi-core processor - Google Patents
Photovoltaic power generation controller based on multi-core processor Download PDFInfo
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- CN203301167U CN203301167U CN2013203090759U CN201320309075U CN203301167U CN 203301167 U CN203301167 U CN 203301167U CN 2013203090759 U CN2013203090759 U CN 2013203090759U CN 201320309075 U CN201320309075 U CN 201320309075U CN 203301167 U CN203301167 U CN 203301167U
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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
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- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model discloses a photovoltaic power generation controller based on a multi-core processor. The photovoltaic power generation controller is mainly composed of a photovoltaic array voltage sampling module, a photovoltaic array reference voltage module, a bus voltage sampling module, a bus reference voltage module, a grid-connection voltage and current sampling module, a grid-connection reference voltage module, a DC-DC driving circuit, a DC-AC driving circuit, a DC-DC converter, a DC-AC converter and a multi-core processing module. The photovoltaic power generation controller disclosed by the utility model has the characteristics of high processing efficiency, stable system and capability of enabling a photovoltaic power generation system to obtain a better grid connection effect.
Description
Technical field
The utility model belongs to photovoltaic inversion device field, is specifically related to a kind of photovoltaic electricity generation controller based on polycaryon processor.
Background technology
Since the industrial revolution, along with industrialization degree improves constantly, people constantly increase the demand of the energy, cause the non-renewable resources such as coal, oil day by day exhausted, and solar energy, as a kind of regenerative resource, more and more is subject to people's attention.And photovoltaic generation is the main direction that following solar energy utilizes, and therefore develops a excellent performance, reliable and stable, the real-time habit of data grid-connected inverting system good, that conversion efficiency is high is significant.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of photovoltaic electricity generation controller based on polycaryon processor, and it has, and treatment effeciency is high, system stability, and can make photovoltaic generating system obtain the characteristics of better grid-connected effect.
For addressing the above problem, a kind of photovoltaic electricity generation controller based on polycaryon processor that the utility model is designed, mainly consist of photovoltaic array voltage sample module, photovoltaic array reference voltage module, busbar voltage sampling module, bus reference voltage module, grid-connected electric current and voltage sampling module, grid-connected reference voltage module, DC-DC drive circuit, DC-AC drive circuit, DC-DC converter, DC-AC converter and multinuclear processing module; The input of DC-DC converter connects photovoltaic array, and the output of DC-DC converter is connected by the DC bus with the input of DC-AC converter, and the output of DC-AC converter connects electrical network; The input of DC-DC converter also is connected with an input of multinuclear processing module through photovoltaic array voltage sample module; DC bus between DC-DC converter and DC-AC converter is connected with another input of multinuclear processing module through the busbar voltage sampling module; The input of DC-AC converter also is connected with the another input of multinuclear processing module through grid-connected electric current and voltage sampling module; The output of photovoltaic array reference voltage module, bus reference voltage module and grid-connected reference voltage module is connected on 3 different inputs of multinuclear processing module; One output of multinuclear processing module is connected with the control end of DC-DC converter through the DC-DC drive circuit; Another output of multinuclear processing module is connected with the control end of DC-AC converter through the DC-AC drive circuit.
In such scheme, described multinuclear processing module reaches by a FPGA main control chip reset circuit and the crystal oscillating circuit that with this FPGA main control chip, are connected and forms.
In such scheme, described photovoltaic array voltage sample module comprises photovoltaic array Hall voltage transducer, photovoltaic array operational amplifier, photovoltaic array voltage filter and photovoltaic array A/D converter; Wherein the input of photovoltaic array Hall voltage transducer is connected on the input of DC-DC converter; The output of photovoltaic array Hall voltage transducer is connected the input of photovoltaic array A/D converter successively with the photovoltaic array voltage filter through the photovoltaic array operational amplifier; The output of photovoltaic array A/D converter connects the input of multinuclear processing module.
In such scheme, described busbar voltage sampling module comprises bus Hall voltage transducer, bus operational amplifier, busbar voltage filter and bus A/D converter; The input of its median generatrix Hall voltage transducer is connected on the input of DC-DC converter; The output of bus Hall voltage transducer is successively through the input of bus operational amplifier and busbar voltage filter connection bus A/D converter; The output of bus A/D converter connects the input of multinuclear processing module.
In such scheme, described grid-connected electric current and voltage sampling module comprises grid-connected Hall current sensor, grid-connected current operational amplifier, grid-connected current filter, grid-connected current A/D converter, grid-connected Hall voltage transducer, grid-connected voltage operational amplifier, grid-connected voltage filter and grid-connected voltage A/D converter; Wherein the input of grid-connected Hall current sensor is connected on the input of DC-AC converter; The output of grid-connected Hall current sensor is connected the input of grid-connected current A/D converter successively with the grid-connected current filter through the grid-connected current operational amplifier; The output of grid-connected current A/D converter connects the input of multinuclear processing module; The input of grid-connected Hall voltage transducer is connected on the input of DC-AC converter; The output of grid-connected Hall voltage transducer is connected the input of grid-connected voltage A/D converter successively with grid-connected voltage filter through grid-connected voltage operational amplifier; The output of grid-connected voltage A/D converter connects the input of multinuclear processing module.
In such scheme, described DC-DC drive circuit and DC-AC drive circuit are respectively an optical couple isolation drive circuit.
Compared with prior art, the utility model builds polycaryon processor based on FPGA, and cooperation current/voltage sampling module, voltage/current base modules and drive circuit, thereby make the processors sharing hardware resource, the treatment effeciency of data and the stability of system have been improved, adopt simultaneously the stagnant ring of DC/DC voltage feedforward control and DC/AC SVPWM to control and improve light power generating system direct voltage utilance, make photovoltaic generating system obtain better grid-connected effect.
The accompanying drawing explanation
Fig. 1 is general structure block diagram of the present utility model.
Fig. 2 is the utility model DC/DC voltage feedforward control block diagram.
Fig. 3 is the stagnant ring of the utility model DC/AC SVPWM control block diagram.
Fig. 4 is the system construction drawing of the inner polycaryon processor of the utility model fpga chip.
Embodiment
A kind of photovoltaic electricity generation controller based on polycaryon processor, as shown in Figure 1, mainly by photovoltaic array voltage sample module, photovoltaic array reference voltage module, busbar voltage sampling module, bus reference voltage module, grid-connected electric current and voltage sampling module, grid-connected reference voltage module, DC-DC drive circuit, DC-AC drive circuit, DC-DC converter, DC-AC converter and multinuclear processing module, formed.The input of DC-DC converter connects photovoltaic array, and the output of DC-DC converter is connected by the DC bus with the input of DC-AC converter, and the output of DC-AC converter connects electrical network.The input of DC-DC converter also is connected with an input of multinuclear processing module through photovoltaic array voltage sample module.DC bus between DC-DC converter and DC-AC converter is connected with another input of multinuclear processing module through the busbar voltage sampling module.The input of DC-AC converter also is connected with the another input of multinuclear processing module through grid-connected electric current and voltage sampling module.The output of photovoltaic array reference voltage module, bus reference voltage module and grid-connected reference voltage module is connected on 3 different inputs of multinuclear processing module.One output of multinuclear processing module is connected with the control end of DC-DC converter through the DC-DC drive circuit.Another output of multinuclear processing module is connected with the control end of DC-AC converter through the DC-AC drive circuit.
Photovoltaic array: according to the output voltage requirement, tandem energy meets the photovoltaic cell group of output voltage demand.
Photovoltaic array voltage sample module: comprise photovoltaic array Hall voltage transducer, photovoltaic array operational amplifier, photovoltaic array voltage filter and photovoltaic array A/D converter; Wherein the input of photovoltaic array Hall voltage transducer is connected on the input of DC-DC converter; The output of photovoltaic array Hall voltage transducer is connected the input of photovoltaic array A/D converter successively with the photovoltaic array voltage filter through the photovoltaic array operational amplifier; The output of photovoltaic array A/D converter connects the input of multinuclear processing module.Photovoltaic array Hall voltage sensor sensing goes out the photovoltaic array output voltage, after amplification filtering, outputs to the photovoltaic array A/D converter, after A/D conversion as the photovoltaic array input voltage parameter of DC-DC control algolithm.The concrete model of described photovoltaic array Hall voltage transducer is selected VSM050D.
Photovoltaic array reference voltage module: output voltage, electric current to photovoltaic array carry out maximal power tracing control, operating voltage by the photovoltaic array maximum power point that traces into, by the Hall voltage sensor sensing, go out reference voltage, through the A/D conversion, as the photovoltaic array input reference voltage parameter of DC/DC control algolithm.The concrete model of described Hall voltage transducer is selected VSM050D.
Busbar voltage sampling module: comprise bus Hall voltage transducer, bus operational amplifier, busbar voltage filter and bus A/D converter; The input of its median generatrix Hall voltage transducer is connected on the input of DC-DC converter; The output of bus Hall voltage transducer is successively through the input of bus operational amplifier and busbar voltage filter connection bus A/D converter; The output of bus A/D converter connects the input of multinuclear processing module.Bus Hall voltage sensor sensing goes out the DC bus output voltage, after amplification filtering, outputs to bus A/D modular converter, after A/D conversion as the bus output voltage parameter of DC-DC control algolithm.The concrete model of described bus Hall voltage transducer is selected VSM400D.
Bus reference voltage module: for the reference voltage of busbar voltage, the concrete model of described reference voltage chip is NCV1009D.
Grid-connected electric current and voltage sampling module: comprise grid-connected Hall current sensor, grid-connected current operational amplifier, grid-connected current filter, grid-connected current A/D converter, grid-connected Hall voltage transducer, grid-connected voltage operational amplifier, grid-connected voltage filter and grid-connected voltage A/D converter; Wherein the input of grid-connected Hall current sensor is connected on the input of DC-AC converter; The output of grid-connected Hall current sensor is connected the input of grid-connected current A/D converter successively with the grid-connected current filter through the grid-connected current operational amplifier; The output of grid-connected current A/D converter connects the input of multinuclear processing module; The input of grid-connected Hall voltage transducer is connected on the input of DC-AC converter; The output of grid-connected Hall voltage transducer is connected the input of grid-connected voltage A/D converter successively with grid-connected voltage filter through grid-connected voltage operational amplifier; The output of grid-connected voltage A/D converter connects the input of multinuclear processing module.Grid-connected output three-phase voltage and electric current are sampled, by Hall voltage transducer and Hall current sensor, induce grid-connected output three-phase voltage and output three-phase current, after amplification filtering, output to the A/D modular converter, after the A/D conversion, as output three-phase voltage parameter and the output three-phase current parameter of DC/AC control algolithm, the concrete model of described Hall voltage transducer is selected VSM200D.The concrete model of described Hall current sensor is selected TBC50DS.
Grid-connected reference voltage module: standard civil power three-phase voltage goes out three-phase voltage by the Hall voltage sensor sensing, after amplification filtering, output to the A/D modular converter, after the A/D conversion, as the reference voltage that space vector SVPWM controls, the concrete model of described Hall voltage transducer is selected VSM200D.
DC-DC converter: adopt Boost boosting inverter structure, control the IGBT device by the DC/DC drive circuit, realize that the DC low-voltage of photovoltaic array output boosts to stable DC bus-bar voltage 400V.The concrete model of described IGBT device is selected the IGBT of the K40T120 that Infineon company model is.
DC-DC drive circuit: adopt optical couple isolation drive circuit, multinuclear controller module DC/DC processor output pwm signal is after the isolation of high speed photo coupling chip, by the driving chip, removed to control the on off state of IGBT, the concrete model of described high speed photo coupling isolating chip is selected the HCPL2631 of Hewlett-Packard, described driving chip adopts the special chip IR2113 of IR company, to realize the driving to the IGBT device.
DC-AC converter: adopt three-phase three bridge wall inverter topologies, control 6 IGBT devices, the 220V three-phase alternating current of stable output by the DC/AC drive circuit.The concrete model of the IGBT device of described three-phase three bridge wall inverters is the same.
The DC-AC drive circuit: adopt 6 road optical couple isolation drive circuits, the SVPWM signal of multinuclear controller module DC/AC processor output, after 6 road high speed photo coupling chips isolation, removes to control the on off state of 6 IGBT devices of three-phase three-leg inverter.Described 6 concrete models of high speed photo coupling isolating chip are the same, and described 6 drive the special chip that chip adopts IR company, and concrete model is the same.:
The multinuclear processing module: the multinuclear processing module comprises a slice FPGA main control chip, also comprise peripheral circuit, in FPGA, build two NIOS II soft-core processors, be respectively DC/DC processor and DC/AC processor, two processors connect by the Avalon bus, make two processors sharing peripheral hardwares and memory.Described fpga chip adopts the Collo II family chip of ATLERA company, and the utility model adopts EP2C8Q208C.the fpga chip that is placed in the multinuclear processing module is the EP2C8Q208C chip of ALTERA company, the Hall voltage transducer that is placed in photovoltaic array voltage sample module and photovoltaic array reference voltage module is VSM050D Hall voltage transducer, the reference voltage chip that is placed in bus reference voltage module is NCV1009D reference voltage chip, the Hall voltage transducer that is placed in the busbar voltage sampling module is VSM400D Hall voltage transducer, the Hall voltage transducer that is placed in grid-connected electric current and voltage sampling module and grid-connected reference voltage module is VSM200D Hall voltage transducer, the Hall current sensor that is placed in grid-connected electric current and voltage sampling module is the TBC50DS Hall current sensor, the optocoupler driving chip that is placed in DC-DC drive circuit and DC-AC drive circuit is HCPL2631 high speed photo coupling isolating chip, the driving chip that is placed in DC-DC drive circuit and DC-AC drive circuit is the special chip IR2113 of IR company, IGBT device used is the IGBT device of the Infineon company model K40T120 that is, photovoltaic array is in series by the polylith solar panel.
As shown in Figure 2, the control block diagram of the utility model DC/DC electric voltage feed forward.Wherein V is the photovoltaic array input voltage, and V* is photovoltaic array input reference reference voltage, and U is the bus output voltage, and U* is bus output reference reference voltage; G
1For feedforward network transfer function, G
2For interior ring delivery function, PWM is for driving signal generator module, G
3For output-transfer function, G
4For output sampling network function, G
5For the feedback network transfer function.When photovoltaic array input voltage V equals photovoltaic array input reference voltage V*, feedforward network is not worked, system is only by the comparison of bus output voltage and bus output reference reference voltage, feedback network is regulated, when photovoltaic array input voltage V was not equal to photovoltaic array input reference reference voltage V*, system was regulated jointly by feedforward network and feedback network.
As shown in Figure 3, the block diagram of the stagnant ring of the utility model DC/AC SVPWM control.U is the DC bus output voltage, and U* is DC bus output reference reference voltage, and PI is adjuster, U
aU
bU
cFor grid-connected output three-phase voltage, I
aI
bI
cFor grid-connected output three-phase current, I
q* be zero, DC bus output reference reference voltage level U* and DC bus output voltage U actual sample value are compared, obtain the busbar voltage deviation, through pi regulator, obtain the output reference current I of inverter
d*, the grid-connected output three-phase voltage U that reality is detected
aU
bU
cWith grid-connected output three-phase current three-phase current I
aI
bI
cTo the two-phase coordinate transform, being transformed to the two-phase static coordinate is U by three phase coordinates
qU
d, I
qI
d, by I
d* with reality, detect I
dBy stagnant chain rate, control the output current instruction, by electric current and svpwm, control output pwm signal.When the voltage of DC bus raises, this moment the DC/AC converter the output order circuit, the stable of busbar voltage remained in the energy increase that makes inverter deliver to electrical network, when the power output of photovoltaic array is delivered to the energy of electrical network less than inverter, the energy that inverter will extract bus capacitor supplements, therefore busbar voltage can descend, and should reduce the output current instruction and carry out the holding power balance this moment, thereby it is stable to remain busbar voltage.
As shown in Figure 4, the system construction drawing of the inner polycaryon processor of utility model fpga chip.CPU1 processes for realizing DC/DC, CPU2 realizes that DC/AC processes, wherein CPU1 is used for controlling and the scheduling whole system, RAM1 is the private memory of CPU1, RAM2 is the private memory of CPU2, SRAM is the shared access device, MUTEX is the mutual exclusion stone, the mutual exclusion stone makes two processors in system can only have one to visit shared storage simultaneously, the I/O interface is for sharing Parallel I/O interface, TIME is timer, make bus and system component realize synchronous working, Avalon is the parametrization interface bus of polycaryon processor, the Avalon bus is CPU automatically, internal memory, the I/O interface, timer distributes address space.
Claims (6)
1. the photovoltaic electricity generation controller based on polycaryon processor, is characterized in that: mainly photovoltaic array voltage sample module, photovoltaic array reference voltage module, busbar voltage sampling module, bus reference voltage module, grid-connected electric current and voltage sampling module, grid-connected reference voltage module, DC-DC drive circuit, DC-AC drive circuit, DC-DC converter, DC-AC converter and multinuclear processing module, consist of;
The input of DC-DC converter connects photovoltaic array, and the output of DC-DC converter is connected by the DC bus with the input of DC-AC converter, and the output of DC-AC converter connects electrical network; The input of DC-DC converter also is connected with an input of multinuclear processing module through photovoltaic array voltage sample module; DC bus between DC-DC converter and DC-AC converter is connected with another input of multinuclear processing module through the busbar voltage sampling module; The input of DC-AC converter also is connected with the another input of multinuclear processing module through grid-connected electric current and voltage sampling module; The output of photovoltaic array reference voltage module, bus reference voltage module and grid-connected reference voltage module is connected on 3 different inputs of multinuclear processing module; One output of multinuclear processing module is connected with the control end of DC-DC converter through the DC-DC drive circuit; Another output of multinuclear processing module is connected with the control end of DC-AC converter through the DC-AC drive circuit.
2. a kind of photovoltaic electricity generation controller based on polycaryon processor according to claim 1 is characterized in that: described multinuclear processing module is comprised of a FPGA main control chip and the reset circuit and the crystal oscillating circuit that with this FPGA main control chip, are connected.
3. a kind of photovoltaic electricity generation controller based on polycaryon processor according to claim 1 and 2, it is characterized in that: described photovoltaic array voltage sample module comprises photovoltaic array Hall voltage transducer, photovoltaic array operational amplifier, photovoltaic array voltage filter and photovoltaic array A/D converter; Wherein the input of photovoltaic array Hall voltage transducer is connected on the input of DC-DC converter; The output of photovoltaic array Hall voltage transducer is connected the input of photovoltaic array A/D converter successively with the photovoltaic array voltage filter through the photovoltaic array operational amplifier; The output of photovoltaic array A/D converter connects the input of multinuclear processing module.
4. a kind of photovoltaic electricity generation controller based on polycaryon processor according to claim 1 and 2, it is characterized in that: described busbar voltage sampling module comprises bus Hall voltage transducer, bus operational amplifier, busbar voltage filter and bus A/D converter; The input of its median generatrix Hall voltage transducer is connected on the input of DC-DC converter; The output of bus Hall voltage transducer is successively through the input of bus operational amplifier and busbar voltage filter connection bus A/D converter; The output of bus A/D converter connects the input of multinuclear processing module.
5. a kind of photovoltaic electricity generation controller based on polycaryon processor according to claim 1 and 2, it is characterized in that: described grid-connected electric current and voltage sampling module comprises grid-connected Hall current sensor, grid-connected current operational amplifier, grid-connected current filter, grid-connected current A/D converter, grid-connected Hall voltage transducer, grid-connected voltage operational amplifier, grid-connected voltage filter and grid-connected voltage A/D converter; Wherein the input of grid-connected Hall current sensor is connected on the input of DC-AC converter; The output of grid-connected Hall current sensor is connected the input of grid-connected current A/D converter successively with the grid-connected current filter through the grid-connected current operational amplifier; The output of grid-connected current A/D converter connects the input of multinuclear processing module; The input of grid-connected Hall voltage transducer is connected on the input of DC-AC converter; The output of grid-connected Hall voltage transducer is connected the input of grid-connected voltage A/D converter successively with grid-connected voltage filter through grid-connected voltage operational amplifier; The output of grid-connected voltage A/D converter connects the input of multinuclear processing module.
6. a kind of photovoltaic electricity generation controller based on polycaryon processor according to claim 1 and 2, it is characterized in that: described DC-DC drive circuit and DC-AC drive circuit are respectively an optical couple isolation drive circuit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487238A (en) * | 2015-08-25 | 2017-03-08 | 深圳市科创力源电子有限公司 | A kind of converter |
| CN106686458A (en) * | 2017-01-05 | 2017-05-17 | 北京星云互连科技有限公司 | Network video live broadcast processing system and method |
| CN111293912A (en) * | 2020-02-28 | 2020-06-16 | 厦门理工学院 | Multi-level inverter, system and control method |
-
2013
- 2013-05-31 CN CN2013203090759U patent/CN203301167U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487238A (en) * | 2015-08-25 | 2017-03-08 | 深圳市科创力源电子有限公司 | A kind of converter |
| CN106686458A (en) * | 2017-01-05 | 2017-05-17 | 北京星云互连科技有限公司 | Network video live broadcast processing system and method |
| CN111293912A (en) * | 2020-02-28 | 2020-06-16 | 厦门理工学院 | Multi-level inverter, system and control method |
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Granted publication date: 20131120 Termination date: 20140531 |