Photovoltaic inverter, method and system for cadmium telluride glass power generation in BIPV

Abstract

The present invention discloses a photovoltaic inverter, method, and system for generating electricity from cadmium telluride glass in a BIPV system. The system relates to the technical field of cadmium telluride photovoltaic power generation and includes a stabilization circuit and a conversion circuit. The present invention provides a photovoltaic inverter for each cadmium telluride glass. By collecting the real-time operating status of the cadmium telluride glass and utilizing the photovoltaic inverter to perform perturbation adjustment on the photoelectric conversion efficiency of the cadmium telluride glass based on the photoelectric conversion efficiency of the cadmium telluride glass, the photovoltaic inverter is used to adjust the photoelectric conversion efficiency of the cadmium telluride glass, thereby enabling the maximum photoelectric conversion output of the cadmium telluride glass to be achieved. This, in turn, meets the power generation and energy storage requirements of building photovoltaic integration, effectively improving the photoelectric conversion efficiency of the cadmium telluride glass. This effectively addresses the existing shortcomings of conventional high-power photovoltaic inverters, which cannot accurately lock onto the maximum power point of all cadmium telluride glass power generation.

Description

Technical Field

[0001] The present invention relates to the technical field of cadmium telluride photovoltaic power generation, and in particular to a photovoltaic inverter, method and system for cadmium telluride glass power generation in BIPV. Background Art

[0002] The power generation system in Building Integrated Photovoltaics (BIPV) must output standard AC power for local offline use or grid-connected output. It also needs to be directly connected to a battery storage system to achieve energy load balancing and all-weather application. This requires a high degree of integration between photovoltaic power generation, energy storage, and grid applications. Existing traditional high-power PV inverters cannot directly connect to both a DC energy storage system and a standard AC grid simultaneously, requiring the integration of more equipment, reducing efficiency and increasing costs.

[0003] At present, the existing same-plane photovoltaic power generation system adopts the scheme of connecting N-way multi-series parallel photovoltaic modules with traditional high-power photovoltaic inverters, where N≥5. Figure 1 Due to factors such as the differences in light intensity generated by the CdTe glass in the integrated building photovoltaic power generation system, the power generation of each CdTe glass channel varies greatly. Traditional high-power photovoltaic inverters cannot accurately lock the maximum power point of all CdTe glass channels. The larger the N value, the more serious this problem becomes, significantly reducing the power generation efficiency and economic benefits of the power generation system. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that traditional high-power photovoltaic inverters cannot accurately lock the maximum power point of all cadmium telluride glass power generation, and to propose a photovoltaic inverter, method and system for cadmium telluride glass power generation in BIPV.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A first aspect of the present invention provides a photovoltaic inverter for power generation using cadmium telluride glass in a BIPV, comprising:

[0007] a stabilization circuit, wherein an input end of the stabilization circuit is electrically connected to an output end of the cadmium telluride glass, and the stabilization circuit is used to stabilize the current and voltage outputted from the output end of the cadmium telluride glass;

[0008] a conversion circuit, wherein an input end of the conversion circuit is electrically connected to an output end of the stabilization circuit, and the conversion circuit is used to convert the current and voltage passing through the stabilization circuit into alternating current;

[0009] The stabilization circuit is a BUCK mode DCDC circuit, and the conversion circuit is a back-end full-bridge DCAC circuit.

[0010] In one feasible embodiment, the stabilization circuit includes:

[0011] A device Q, which is a low-resistance NMOS transistor, is electrically connected to the output end of the cadmium telluride glass and controls the current output from the output end of the cadmium telluride glass to achieve voltage reduction;

[0012] Device D, wherein the device D is a low-resistance Schottky diode, the device D is electrically connected to the device Q, and the device D forms a freewheeling loop;

[0013] Device L1, which is a high-frequency, low-resistance inductor, is electrically connected to device Q and device D, and is used to store and release energy;

[0014] Device C, the device C is a high-frequency low-resistance capacitor, the device C is electrically connected to the device L, and the device C is used for filtering.

[0015] In one feasible embodiment, the conversion circuit includes:

[0016] A first conducting circuit, wherein the first conducting circuit comprises:

[0017] Device S1 and device S4, wherein the devices S1 and S4 are electrically connected to each other;

[0018] A second conducting circuit, wherein the second conducting circuit comprises:

[0019] Device S2 and device S3, wherein the devices S2 and S3 are electrically connected to each other;

[0020] Wherein, the device S1, device S2, device S3 and device S4 are all NMOS transistors;

[0021] The device L2 is a low-resistance inductor and is used for low-pass filtering.

[0022] In a second aspect, the present invention provides a method for generating electricity using cadmium telluride glass in a BIPV, which uses a photovoltaic inverter for generating electricity using cadmium telluride glass in a BIPV as described in any one of the first aspects. The method further comprises:

[0023] Obtain the model and specifications of the cadmium telluride glass, collect the real-time working status of the cadmium telluride glass, and determine the working status information of the cadmium telluride glass;

[0024] Determining sampling working information of the cadmium telluride glass according to working status information of the cadmium telluride glass;

[0025] According to the model specifications of the cadmium telluride glass and the working status information of the cadmium telluride glass, the sampled working information of the cadmium telluride glass is filtered to determine the real-time working information of the cadmium telluride glass;

[0026] determining real-time working efficiency information of the cadmium telluride glass according to the real-time working information of the cadmium telluride glass;

[0027] Determining information to be adjusted for the cadmium telluride glass based on the real-time working efficiency information of the cadmium telluride glass and in combination with the working status information of the cadmium telluride glass;

[0028] According to the information to be adjusted of the cadmium telluride glass, the output voltage and / or current of the cadmium telluride glass is disturbed, and a stable voltage and current is output to store energy.

[0029] In one feasible embodiment, the method for determining real-time operating information of cadmium telluride glass includes:

[0030] collecting voltage or current values ​​of the cadmium telluride glass in real time to obtain multiple voltage sampling values ​​or current sampling values;

[0031] Determining a sampling effective value of the cadmium telluride glass according to a plurality of voltage sampling values ​​or current sampling values ​​and in combination with a sampling period;

[0032] According to the sampling effective value of the cadmium telluride glass, the real-time working information of the cadmium telluride glass is determined.

[0033] In a feasible embodiment, the method for determining real-time operating information of cadmium telluride glass further includes:

[0034] Obtain multiple voltage sampling values ​​X or multiple current sampling values ​​Y;

[0035] According to the acquisition calculation cycle, the average value of multiple voltage sampling values ​​X or multiple current sampling values ​​Y is calculated to determine the acquisition calculation average value;

[0036] According to the model and specifications of cadmium telluride glass and combined with the collected and calculated average values, set the filtering information;

[0037] According to the filtering and screening information, the sampling effective value of the cadmium telluride glass is determined by comparing it with the voltage sampling value X or multiple current sampling values ​​Y in the same subsequent sampling period.

[0038] In a feasible embodiment, the method for determining the information to be adjusted of the cadmium telluride glass includes:

[0039] Determine the real-time working efficiency information of the cadmium telluride glass according to the sampling effective value of the cadmium telluride glass;

[0040] At least two disturbance factor information is determined based on the real-time working efficiency information of the cadmium telluride glass and in combination with the model specifications of the cadmium telluride glass;

[0041] According to information of multiple disturbance factors and collecting effective sampling values ​​of cadmium telluride glass, real-time working efficiency information of cadmium telluride glass is determined in real time;

[0042] Determine the optimal disturbance factor of the cadmium telluride glass based on the real-time working efficiency information of the cadmium telluride glass;

[0043] According to the optimal disturbance factor of the cadmium telluride glass, information to be adjusted of the cadmium telluride glass is determined.

[0044] In a feasible manner, the disturbance factor information includes:

[0045] According to the model specifications of the cadmium telluride glass and the photovoltaic inverter, the duty cycle of the NMOS switch tube is set to achieve disturbance interference on the output voltage of the cadmium telluride glass.

[0046] In a third aspect, the present invention further provides a cadmium telluride glass power generation system in a BIPV, which adopts a photovoltaic inverter for power generation of cadmium telluride glass in a BIPV as described in any one of the first aspects or a cadmium telluride glass power generation method in a BIPV as described in any one of the second aspects.

[0047] In one feasible embodiment, the power generation system further includes:

[0048] A plurality of cadmium telluride glasses, wherein the plurality of cadmium telluride glasses are used for photovoltaic power generation;

[0049] A plurality of photovoltaic inverters, each of the plurality of photovoltaic inverters being connected to each of the plurality of cadmium telluride glasses in a one-to-one correspondence, and each photovoltaic inverter being used to process power generation of each cadmium telluride glass;

[0050] A sampling module, the sampling module is used to collect the working conditions of the cadmium telluride glass;

[0051] A control and adjustment module, the control and adjustment module being used to make adjustments according to the working conditions of the cadmium telluride glass;

[0052] a disturbance interference module, the disturbance interference module being electrically connected to the control adjustment module, and the disturbance interference module performing disturbance interference adjustment according to the control adjustment module;

[0053] An energy storage module is used to generate electricity and store energy for cadmium telluride glass.

[0054] The beneficial effects of the present invention are:

[0055] The present invention installs a photovoltaic inverter on each CdTe glass. Simultaneously, by collecting the real-time operating status of the CdTe glass and using the photovoltaic inverter to adjust the CdTe glass's photoelectric conversion efficiency based on the CdTe glass's photoelectric conversion efficiency, the photovoltaic inverter is used to adjust the CdTe glass's photoelectric conversion efficiency to meet the CdTe glass's maximum photoelectric conversion output. This, in turn, meets the power generation and energy storage requirements of the building's photovoltaic integration, effectively improving the CdTe glass's photoelectric conversion efficiency. This effectively addresses the prior art shortcoming that conventional high-power photovoltaic inverters cannot accurately lock onto the maximum power point of all CdTe glass panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 A connection solution for traditional high-power photovoltaic inverters;

[0057] Figure 2 This is a schematic diagram of the overall installation structure of a photovoltaic inverter for cadmium telluride glass power generation in a BIPV provided in an embodiment of the present invention;

[0058] Figure 3 This is a schematic diagram of the overall structure of a photovoltaic inverter for power generation using cadmium telluride glass in a BIPV provided in an embodiment of the present invention;

[0059] Figure 4 This is a schematic diagram of the conversion circuit structure of a photovoltaic inverter for cadmium telluride glass power generation in a BIPV provided in an embodiment of the present invention;

[0060] Figure 5 This is a schematic diagram of the stable circuit structure of a photovoltaic inverter for cadmium telluride glass power generation in a BIPV provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0062] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0063] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0064] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0065] Reference Figures 1 to 5The purpose of the present invention is to solve the shortcomings of the prior art that traditional high-power photovoltaic inverters cannot accurately lock the maximum power point of all cadmium telluride glass power generation, and to propose a photovoltaic inverter, method and system for cadmium telluride glass power generation in BIPV. The present invention provides a method for generating power using cadmium telluride glass in BIPV, and the power generation method also includes: obtaining the model specifications of the cadmium telluride glass (such as the number of glass blocks laid out, the laying area, etc.), and collecting the real-time working status of the cadmium telluride glass (such as the laying direction, the laying irradiation intensity, etc.), and determining the working status information of the cadmium telluride glass; determining the sampling working information of the cadmium telluride glass according to the working status information of the cadmium telluride glass; and sampling the cadmium telluride glass according to the model specifications of the cadmium telluride glass and the working status information of the cadmium telluride glass. The sampled working information is filtered to determine the real-time working information of the CdTe glass, thereby filtering out unstable or chaotic currents. The real-time working efficiency information of the CdTe glass is determined based on the real-time working information of the CdTe glass. The information to be adjusted for the CdTe glass is determined based on the real-time working efficiency information of the CdTe glass and in combination with the working status information of the CdTe glass. Based on the information to be adjusted for the CdTe glass, the output voltage and / or current of the CdTe glass is disturbed to output a stable voltage and current for energy storage. In this embodiment of the present invention, a photovoltaic inverter is provided on each CdTe glass. By collecting the real-time working status of the CdTe glass and adjusting the photoelectric conversion efficiency of the CdTe glass based on the photoelectric conversion efficiency of the CdTe glass, the photovoltaic inverter is used to disturb and adjust the photoelectric conversion efficiency of the CdTe glass to meet the maximum photoelectric conversion output of the CdTe glass, thereby meeting the power generation and energy storage requirements of the building photovoltaic integration, thereby effectively improving the photoelectric conversion efficiency of the CdTe glass. That is, it effectively solves the shortcoming in the existing technology that traditional high-power photovoltaic inverters cannot accurately lock the maximum power point of all cadmium telluride glass power generation.

[0066] In this embodiment, in order to facilitate understanding of how to determine the real-time working information of cadmium telluride glass, the method for determining the real-time working information of cadmium telluride glass includes: by collecting the voltage or current value of cadmium telluride glass in real time, a plurality of voltage sampling values ​​or current sampling values ​​can be obtained; then, based on the plurality of voltage sampling values ​​or current sampling values, and in combination with the sampling period, the sampling effective value of cadmium telluride glass can be determined; and then, based on the sampling effective value of cadmium telluride glass, the real-time working information of cadmium telluride glass can be determined. Here, the voltage or current in the plurality of cadmium telluride glasses collected in real time can be digitally filtered by an n-order time series array sliding window observation and averaging method. That is, on the one hand, the voltage fluctuation amplitude during operation can be solved, and on the other hand, the high-frequency noise caused by the switching power supply can be solved. Specifically, the method for determining the real-time working information of cadmium telluride glass also includes: a plurality of voltage sampling values ​​X or a plurality of current sampling values ​​Y can be obtained;

[0067] Then, based on the acquisition and calculation cycle, the average value of multiple voltage sampling values ​​X or multiple current sampling values ​​Y is calculated to determine the acquisition and calculation average value; at the same time, based on the model and specifications of the cadmium telluride glass and combined with the acquisition and calculation average value, filtering and screening information is set; then, based on the filtering and screening information, the voltage sampling value X or multiple current sampling values ​​Y of the same subsequent sampling cycle can be compared to determine the sampling effective value of the cadmium telluride glass.

[0068] To facilitate understanding of how to determine the effective sampling value of cadmium telluride glass, the following example is provided to illustrate that, in a feasible implementation, voltage filtering and current filtering are independently performed by respective arrays. That is, independent filtering can be performed as follows.

[0069] Specifically, ① the voltage sampling value X or the current sampling value Y is entered into the n-order array An in each calculation cycle, and is shifted right from 1 to n. When running for the first time, the following filtering operation is started after n calculation cycles;

[0070] ②In each calculation cycle, the average value is calculated. The calculation formula of the average value W is as follows:

[0071] ;

[0072] ③ In each calculation cycle, the new sample value X or Y is compared with the average value W. If it is greater than or less than m times the average value, it is considered a bad value and does not enter the array An. An remains the last value; among them, n and m are natural numbers, selected according to the debugging situation.

[0073] In this embodiment, to facilitate understanding of how to determine the information to be adjusted of the cadmium telluride glass based on the sampled effective values ​​of the cadmium telluride glass after the aforementioned screening, the following description is provided. The method for determining the information to be adjusted of the cadmium telluride glass includes: determining the real-time working efficiency information of the cadmium telluride glass based on the sampled effective values ​​of the cadmium telluride glass; that is, determining the power generation value of the cadmium telluride glass based on the current and voltage in the sampled effective values ​​of the cadmium telluride glass, and then determining the real-time working efficiency information of the cadmium telluride glass. Based on the real-time operating efficiency information of the CdTe glass and its model and specifications, a perturbation scheme can be developed to adjust the real-time operating efficiency information of the CdTe glass (e.g., adjusting the duty cycle, the irradiation direction of the CdTe glass, etc.). At least two perturbation factors are then determined based on the perturbation scheme. Based on these multiple perturbation factors and the sampled effective values ​​of the CdTe glass, the real-time operating efficiency information of the CdTe glass is determined in real time. Based on the real-time operating efficiency information of the CdTe glass, the optimal perturbation factor for the CdTe glass is determined. Based on the optimal perturbation factor for the CdTe glass, the information to be adjusted for the CdTe glass is determined. Specifically, by perturbing the output voltage U of the CdTe glass multiple times with increasing step sizes based on the power generation characteristics of the CdTe glass, the direction of change in the output power value P of the CdTe glass can be comprehensively determined. This allows identification of nonlinear sections of voltage instability, avoids false locks, and increases both optimization speed and accuracy. In order to understand how to determine the optimal disturbance factor, the following example is given. Specifically,

[0074] First, the power value P of the cadmium telluride glass can be calculated from the current Iw and voltage Uw in the filtered sampled effective value of the cadmium telluride glass, using the following formula:

[0075] ,

[0076] ① At this time, the first disturbance can be set according to the model specifications of the cadmium telluride glass, using the minimum step size ∆U1, and observing whether the change direction of P is increasing or decreasing;

[0077] ② Then set the second disturbance, take the intermediate step size ∆U2, and observe whether the direction of P change is increasing or decreasing;

[0078] ③ Continue to set the third disturbance, use the maximum step size ∆U3, and observe whether the power change direction is increasing or decreasing;

[0079] ④ If the power change direction is the same in the three results, the minimum step size is taken as the locking step size. If the three results are not all the same, the power change direction is taken as the direction of the two same directions, and the maximum step size is taken as the locking step size.

[0080] It should be noted that the minimum step size ∆U1 < the intermediate step size ∆U2 < the maximum step size ∆U3. In one feasible embodiment, the preset minimum step size ∆U1 can be 1% of the standard voltage Voc of the CdTe glass, the preset intermediate step size ∆U2 can be 2% of the standard voltage Voc of the CdTe glass, and the preset maximum step size ∆U3 can be 3% of the standard voltage Voc of the CdTe glass. The optimal value can be selected based on the actual operating conditions of the CdTe glass, balancing optimization speed and accuracy. In this embodiment, the disturbance factor information includes: Based on the model and specifications of the CdTe glass and the photovoltaic inverter, the duty cycle of the NMOS switch in the CdTe glass can be set to achieve disturbance interference on the output voltage of the CdTe glass.

[0081] Reference Figures 3 to 5In this embodiment, the present invention further provides a photovoltaic inverter for power generation using cadmium telluride glass in BIPV. The photovoltaic inverter used in the power generation method includes: a stabilization circuit, wherein the input end of the stabilization circuit is electrically connected to the output end of the cadmium telluride glass, and the stabilization circuit is used to stabilize the current and voltage output from the output end of the cadmium telluride glass; a conversion circuit, wherein the input end of the conversion circuit is electrically connected to the output end of the stabilization circuit, and the conversion circuit is used to convert the current and voltage passing through the stabilization circuit into DC to AC; wherein the stabilization circuit is a BUCK mode DCDC circuit, and the conversion circuit is a back-end full-bridge DCAC circuit. In particular, the stabilization circuit includes: device Q, which is a low-resistance NMOS tube, electrically connected to the output end of the cadmium telluride glass, and controls the current output from the output end of the cadmium telluride glass to achieve voltage reduction; device D, which is a low-resistance Schottky diode, electrically connected to device Q, and forming a freewheeling loop; device L1, which is a high-frequency low-resistance inductor, electrically connected to device Q and device D, and used to store and release energy; device C, which is a high-frequency low-resistance capacitor, electrically connected to device L, and used for filtering. In one feasible embodiment, the conversion circuit includes: a first conduction circuit, comprising devices S1 and S4, which are electrically conductive to each other; a second conduction circuit, comprising devices S2 and S3, which are electrically conductive to each other; wherein devices S1, S2, S3, and S4 are all NMOS transistors; and device L2, which is a low-resistance inductor and functions as a low-pass filter. Specifically, the circuit design comprises a front-end buck (DC-to-DC) module and a back-end full-bridge DC-to-AC (DC-to-AC) module. The unstable voltage Vin and current Iin generated by the CdTe glass generator first pass through a stabilization circuit (a buck-mode DC-DC circuit). This circuit stabilizes the current generated by the CdTe glass through a voltage-stabilizing circuit consisting of devices Q (a low-resistance NMOS transistor), D (a low-resistance Schottky diode), L1 (a high-frequency, low-resistance inductor), and C (a high-frequency, low-resistance capacitor). The PWM waveform controls the current flowing through device Q by switching it on and off, thereby reducing the voltage and outputting a stable DC voltage Vdc and current Idc. This forms a DC source DC that can supply a building with DC power or be directly connected to a local battery. The basic operating principle of the conversion circuit is to switch devices S1, S2, S3, and S4 on and off using high and low voltage levels during the positive half-cycle t1 and negative half-cycle t2, generating an alternating output voltage based on the direction of the current. The specific implementation is as follows:

[0082] 1) Positive half cycle t1: Devices S1 and S4 are turned on, devices S2 and S3 are turned off, and the current flows from the positive pole of the DC power supply through device S1, the load, and device S4 back to the negative pole of the DC power supply. The voltage on the load is positive.

[0083] 2) Negative half-cycle t2: Devices S2 and S3 are on, while devices S1 and S4 are off. Current flows from the positive terminal of the DC power supply through device S3, the load, and device S2, returning to the negative terminal of the DC power supply. The voltage across the load is negative. This current then undergoes low-pass filtering by device L2 (a low-resistance inductor) to output standard AC voltages Vac and Iac, forming an AC source that can be connected to the local power grid or connected to the public grid.

[0084] In a third aspect, the present invention further provides a cadmium telluride glass power generation system in a BIPV, which utilizes a photovoltaic inverter for cadmium telluride glass power generation in a BIPV as described in any one of the first aspects or a cadmium telluride glass power generation method in a BIPV as described in any one of the second aspects. The power generation system further comprises: a plurality of cadmium telluride glasses, the plurality of cadmium telluride glasses being used for photovoltaic power generation; a plurality of photovoltaic inverters, the plurality of photovoltaic inverters being connected to the plurality of cadmium telluride glasses in a one-to-one correspondence, the photovoltaic inverters being used to process the power generation status of each cadmium telluride glass; a sampling module, the sampling module being used to collect the working status of the cadmium telluride glass; a control and adjustment module, the control and adjustment module being used to make adjustments based on the working status of the cadmium telluride glass; a disturbance interference module, the disturbance interference module being electrically connected to the control and adjustment module, the disturbance interference module performing disturbance interference adjustments based on the control and adjustment module; and an energy storage module, the energy storage module being used to store energy generated by the cadmium telluride glass.

[0085] In some embodiments, the power generation system can communicate using any currently known or later developed network protocol, such as HTTP (Hypertext Transfer Protocol), and can interconnect with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), an internet (e.g., the Internet), and a peer-to-peer network (e.g., an ad hoc peer-to-peer network), as well as any currently known or later developed network.

[0086] The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, and without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0087] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or a part of code, and the module, program segment, or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of the boxes in the block diagram and / or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0088] In particular, according to some embodiments of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, some embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program including program code for executing the methods shown in the flowcharts.

[0089] The above descriptions are merely some preferred embodiments of the present disclosure and illustrate the underlying technical principles. Those skilled in the art should understand that the scope of the invention encompassed by the embodiments of the present disclosure is not limited to technical solutions formed by specific combinations of the aforementioned technical features. It also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents, without departing from the aforementioned inventive concept. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A method for generating electricity using cadmium telluride glass in a BIPV system, comprising: The photovoltaic inverter comprises: a stabilization circuit, wherein an input end of the stabilization circuit is electrically connected to an output end of the cadmium telluride glass, and the stabilization circuit is used to stabilize the current and voltage outputted from the output end of the cadmium telluride glass; a conversion circuit, wherein an input end of the conversion circuit is electrically connected to an output end of the stabilization circuit, and the conversion circuit is used to convert the current and voltage passing through the stabilization circuit into alternating current; Wherein, the stabilization circuit is a BUCK mode DCDC circuit, and the conversion circuit is a back-end full-bridge DCAC circuit; The power generation method further comprises: Obtain the model and specifications of the cadmium telluride glass, collect the real-time working status of the cadmium telluride glass, and determine the working status information of the cadmium telluride glass; Determining sampling working information of the cadmium telluride glass according to working status information of the cadmium telluride glass; According to the model specifications of the cadmium telluride glass and the working status information of the cadmium telluride glass, the sampled working information of the cadmium telluride glass is filtered to determine the real-time working information of the cadmium telluride glass; determining real-time working efficiency information of the cadmium telluride glass according to the real-time working information of the cadmium telluride glass; Determining information to be adjusted for the cadmium telluride glass based on the real-time working efficiency information of the cadmium telluride glass and in combination with the working status information of the cadmium telluride glass; According to the information to be adjusted of the cadmium telluride glass, the output voltage and / or current of the cadmium telluride glass is disturbed, and a stable voltage and current is output to store energy; The method of disturbing the output voltage and / or current of the cadmium telluride glass includes: ① At this time, set the first disturbance according to the model specifications of the cadmium telluride glass, use the minimum step size ∆U1, and observe whether the change direction of P is increasing or decreasing; ② Then set the second disturbance, take the intermediate step size ∆U2, and observe whether the direction of P change is increasing or decreasing; ③ Continue to set the third disturbance, use the maximum step size ∆U3, and observe whether the power change direction is increasing or decreasing; ④ If the power change direction is the same in the three results, the minimum step size is taken as the locking step size. If the three results are not all the same, the power change direction is taken as the direction of the two same directions, and the maximum step size is taken as the locking step size.

2. The method for generating electricity using cadmium telluride glass in BIPV according to claim 1, wherein: The method for determining real-time working information of cadmium telluride glass includes: collecting voltage or current values ​​of the cadmium telluride glass in real time to obtain multiple voltage sampling values ​​or current sampling values; Determining a sampling effective value of the cadmium telluride glass according to a plurality of voltage sampling values ​​or current sampling values ​​and in combination with a sampling period; According to the sampling effective value of the cadmium telluride glass, the real-time working information of the cadmium telluride glass is determined.

3. The method for generating electricity using cadmium telluride glass in BIPV according to claim 2, wherein: The method for determining real-time working information of cadmium telluride glass further includes: Obtain multiple voltage sampling values ​​X or multiple current sampling values ​​Y; According to the acquisition calculation cycle, the average value of multiple voltage sampling values ​​X or multiple current sampling values ​​Y is calculated to determine the acquisition calculation average value; According to the model and specifications of cadmium telluride glass and combined with the collected and calculated average values, set the filtering information; According to the filtering and screening information, the sampling effective value of the cadmium telluride glass is determined by comparing it with the voltage sampling value X or multiple current sampling values ​​Y in the same subsequent sampling period.

4. The method for generating electricity using cadmium telluride glass in BIPV according to claim 3, wherein: The method for determining information to be adjusted of cadmium telluride glass includes: Determine the real-time working efficiency information of the cadmium telluride glass according to the sampling effective value of the cadmium telluride glass; At least two disturbance factor information is determined based on the real-time working efficiency information of the cadmium telluride glass and in combination with the model specifications of the cadmium telluride glass; According to information of multiple disturbance factors and collecting effective sampling values ​​of cadmium telluride glass, real-time working efficiency information of cadmium telluride glass is determined in real time; Determine the optimal disturbance factor of the cadmium telluride glass based on the real-time working efficiency information of the cadmium telluride glass; According to the optimal disturbance factor of the cadmium telluride glass, information to be adjusted of the cadmium telluride glass is determined.

5. The method for generating electricity using cadmium telluride glass in BIPV according to claim 4, characterized in that: The disturbance factor information includes: According to the model specifications of the cadmium telluride glass and the photovoltaic inverter, the duty cycle of the NMOS switch tube is set to achieve disturbance interference on the output voltage of the cadmium telluride glass.

6. A cadmium telluride glass power generation system in BIPV, characterized in that: A cadmium telluride glass power generation method in a BIPV according to any one of claims 1 to 5 is adopted.

7. The cadmium telluride glass power generation system in BIPV according to claim 6, characterized in that: The power generation system further comprises: A plurality of cadmium telluride glasses, wherein the plurality of cadmium telluride glasses are used for photovoltaic power generation; A plurality of photovoltaic inverters, each of the plurality of photovoltaic inverters being connected to each of the plurality of cadmium telluride glasses in a one-to-one correspondence, and each photovoltaic inverter being used to process power generation of each cadmium telluride glass; A sampling module, the sampling module is used to collect the working conditions of the cadmium telluride glass; A control and adjustment module, the control and adjustment module being used to make adjustments according to the working conditions of the cadmium telluride glass; a disturbance interference module, the disturbance interference module being electrically connected to the control adjustment module, and the disturbance interference module performing disturbance interference adjustment according to the control adjustment module; An energy storage module is used to generate electricity and store energy for cadmium telluride glass.

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