Photovoltaic inverter, method and system for cadmium telluride glass power generation in building integrated photovoltaics (BIPV)

Abstract

The invention discloses a photovoltaic inverter, method and system for cadmium telluride glass power generation in a building integrated photovoltaics (BIPV), and relates to the technical field of cadmium telluride photovoltaic power generation. And a conversion circuit. The photovoltaic inverter is arranged on each piece of cadmium telluride glass, meanwhile, the real-time working state of the cadmium telluride glass is collected, and according to the photoelectric conversion efficiency of the cadmium telluride glass, the photovoltaic inverter is used for carrying out disturbance adjustment on the photoelectric conversion efficiency of the cadmium telluride glass, so that the maximum photoelectric conversion output of the cadmium telluride glass can be met; therefore, the power generation requirement and the energy storage requirement of building photovoltaic integration can be met, and the photoelectric conversion efficiency of the cadmium telluride glass is effectively improved. Therefore, the defect that the traditional high-power photovoltaic inverter cannot accurately lock the maximum power point of all cadmium telluride glass power generation in the prior art is effectively overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of cadmium telluride photovoltaic power generation, and particularly 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) needs to consider outputting standard alternating current for off-grid local use or grid-connected output. At the same time, it also needs to consider directly connecting to an energy storage battery system to achieve energy load balance and all-weather application, which requires a high degree of integration of photovoltaic power generation with energy storage and grid applications. Existing traditional high-power photovoltaic inverters cannot directly connect to both a DC energy storage system and a standard AC power grid simultaneously, requiring the integration of more devices, resulting in reduced efficiency and higher costs.

[0003] Currently, in existing in-plane photovoltaic power generation systems, a scheme of connecting N multi-series and parallel photovoltaic modules to a traditional high-power photovoltaic inverter is adopted, where N≥5. As Figure 1 shown. Due to factors such as the difference in light intensity of cadmium telluride glass power generation in the building integrated photovoltaic power generation system, the power generation of each path of cadmium telluride glass power generation varies greatly. The traditional high-power photovoltaic inverter cannot accurately lock the maximum power point of all cadmium telluride glass power generation, and the problem becomes more serious as the value of N increases, 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 drawback in the prior art that the traditional high-power photovoltaic inverter 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] To achieve the above purpose, the present invention adopts the following technical solutions: The first aspect of the present invention provides a photovoltaic inverter for cadmium telluride glass power generation in BIPV, including: A stabilization circuit, 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 by the output end of the cadmium telluride glass; A conversion circuit, 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 from DC to AC; Wherein, the stabilization circuit is a BUCK-mode DCDC circuit, and the conversion circuit is a full-bridge DCAC circuit at the back end.

[0006] In a feasible manner, the stabilization circuit includes: Device Q, where device Q is a low-resistance NMOS transistor, device Q is electrically connected to the output terminal of cadmium telluride glass, and device Q controls the current output from the output terminal of cadmium telluride glass to achieve voltage reduction; Device D, where device D is a low-resistance Schottky diode, device D is electrically connected to device Q, and device D forms a freewheeling circuit; Device L1, where device L1 is a high-frequency low-resistance inductor, device L1 is electrically connected to device Q and device D, and device L1 is used to store and release energy; Device C, where device C is a high-frequency low-resistance capacitor, device C is electrically connected to device L, and device C is used for filtering.

[0007] In a feasible manner, the conversion circuit includes: The first conduction circuit, which includes: Device S1 and device S4, where device S1 and device S4 conduct with each other; The second conduction circuit, which includes: Device S2 and device S3, where device S2 and device S3 conduct with each other; Among them, device S1, device S2, device S3, and device S4 are all NMOS transistors; Device L2, where device L2 is a low-resistance inductor, and device L2 is used for low-pass filtering.

[0008] In the second aspect of the present invention, a method for generating electricity from cadmium telluride glass in BIPV is provided. A photovoltaic inverter for generating electricity from cadmium telluride glass in BIPV according to any one of the first aspect is adopted. The power generation method further includes: Obtain the model specifications of cadmium telluride glass, collect the real-time working conditions of cadmium telluride glass, and determine the working state information of cadmium telluride glass; According to the working state information of cadmium telluride glass, determine the sampling working information of cadmium telluride glass; According to the model specifications of cadmium telluride glass and the working state information of cadmium telluride glass, filter the sampling working information of cadmium telluride glass to determine the real-time working information of cadmium telluride glass; According to the real-time working information of cadmium telluride glass, determine the real-time working efficiency information of cadmium telluride glass; According to the real-time working efficiency information of cadmium telluride glass and in combination with the working state information of cadmium telluride glass, determine the information to be adjusted for cadmium telluride glass; According to the information to be adjusted for cadmium telluride glass, perturb the output voltage and / or current of cadmium telluride glass, and output a stable voltage and current for energy storage.

[0009] In a feasible manner, the method for determining the real-time working information of cadmium telluride glass includes: Real-time collect the voltage or current value of cadmium telluride glass to obtain multiple voltage sampling values or current sampling values; According to multiple voltage sampling values or current sampling values, and in combination with the sampling period, determine the sampling effective value of cadmium telluride glass; According to the sampling effective value of cadmium telluride glass, determine the real-time working information of cadmium telluride glass.

[0010] In a feasible manner, the method for determining the 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 period, calculate the average value of multiple voltage sampling values X or multiple current sampling values Y to determine the acquisition calculation average value; According to the model specification of cadmium telluride glass, and in combination with the acquisition calculation average value, set the filtering and screening information; According to the filtering and screening information, compare it with the voltage sampling value X or multiple current sampling values Y in the subsequent same sampling period to determine the sampling effective value of cadmium telluride glass.

[0011] In a feasible manner, the method for determining the information to be adjusted of cadmium telluride glass includes: According to the sampling effective value of cadmium telluride glass, determine the real-time working efficiency information of cadmium telluride glass; According to the real-time working efficiency information of cadmium telluride glass, and in combination with the model specification of cadmium telluride glass, determine at least two disturbance factor information; According to multiple disturbance factor information, and collect the sampling effective value of cadmium telluride glass, determine the real-time working efficiency information of cadmium telluride glass in real time; According to the real-time working efficiency information of cadmium telluride glass, determine the optimal disturbance factor of cadmium telluride glass; According to the optimal disturbance factor of cadmium telluride glass, determine the information to be adjusted of cadmium telluride glass.

[0012] In a feasible manner, the disturbance factor information includes: According to the model specification of cadmium telluride glass and the photovoltaic inverter, set the duty cycle of the NMOS switch tube to realize disturbance interference on the output voltage of cadmium telluride glass.

[0013] The present invention in the third aspect also provides a cadmium telluride glass power generation system in BIPV, which adopts any one of the photovoltaic inverters for cadmium telluride glass power generation in BIPV described in the first aspect or any one of the cadmium telluride glass power generation methods in BIPV described in the second aspect.

[0014] In a feasible manner, the power generation system further includes: A plurality of cadmium telluride glasses for photovoltaic power generation; A plurality of photovoltaic inverters, each of the plurality of photovoltaic inverters is respectively connected to one of the plurality of cadmium telluride glasses in a one-to-one correspondence, and the photovoltaic inverter is used to process the power generation situation of each cadmium telluride glass respectively; A sampling module for collecting the working condition of the cadmium telluride glass; A control and adjustment module for adjusting according to the working condition of the cadmium telluride glass; A perturbation and interference module, the perturbation and interference module is electrically connected to the control and adjustment module, and the perturbation and interference module performs perturbation and interference adjustment according to the control and adjustment module; An energy storage module for storing the electric energy generated by the cadmium telluride glass.

[0015] The beneficial effects of the present invention are as follows: In the present invention, a photovoltaic inverter is provided for each cadmium telluride glass. At the same time, by collecting the real-time working state of the cadmium telluride glass and according to the photoelectric conversion efficiency of the cadmium telluride glass, the photovoltaic inverter is used to perform perturbation adjustment on the photoelectric conversion efficiency of the cadmium telluride glass, so that it can meet the maximum photoelectric conversion output of the cadmium telluride glass, and then can meet the power generation demand and energy storage demand of building-integrated photovoltaics, effectively improving the photoelectric conversion efficiency of the cadmium telluride glass. That is, it effectively solves the defect that the traditional high-power photovoltaic inverter in the prior art cannot accurately lock the maximum power point of the power generation of all cadmium telluride glasses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Is the connection scheme of the traditional high-power photovoltaic inverter; Figure 2 Is the overall installation structure diagram of a photovoltaic inverter for cadmium telluride glass power generation in BIPV provided in the embodiment of the present invention; Figure 3 Is the overall structure diagram of a photovoltaic inverter for cadmium telluride glass power generation in BIPV provided in the embodiment of the present invention; Figure 4 Is the conversion circuit structure diagram of a photovoltaic inverter for cadmium telluride glass power generation in BIPV provided in the embodiment of the present invention; Figure 5 Is the stable circuit structure diagram of a photovoltaic inverter for cadmium telluride glass power generation in BIPV provided in the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0019] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0020] 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 implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0021] Refer to Figures 1 to 5, the object of the present invention is to solve the defect in the prior art that traditional high-power photovoltaic inverters cannot accurately lock the maximum power points 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 cadmium telluride glass power generation in BIPV, and the power generation method further includes: obtaining the model specifications of cadmium telluride glass (such as the number of glass blocks arranged, the arranged area, etc.), and collecting the real-time working conditions of cadmium telluride glass (such as the arranged orientation, the arranged irradiation intensity, etc.), and determining the working state information of cadmium telluride glass; determining the sampling working information of cadmium telluride glass according to the working state information of cadmium telluride glass; filtering the sampling working information of cadmium telluride glass according to the model specifications of cadmium telluride glass and the working state information of cadmium telluride glass to determine the real-time working information of cadmium telluride glass, that is, filtering out unstable or chaotic currents here; determining the real-time working efficiency information of cadmium telluride glass according to the real-time working information of cadmium telluride glass; determining the information to be adjusted of cadmium telluride glass according to the real-time working efficiency information of cadmium telluride glass and in combination with the working state information of cadmium telluride glass; disturbing the output voltage and / or current of cadmium telluride glass according to the information to be adjusted of cadmium telluride glass, and outputting stable voltage and current for energy storage. In this embodiment of the present invention, a photovoltaic inverter is provided for each cadmium telluride glass, and at the same time, by collecting the real-time working state of cadmium telluride glass, according to the photoelectric conversion efficiency of cadmium telluride glass, the photovoltaic inverter is used to disturb and adjust the photoelectric conversion efficiency of cadmium telluride glass, so that it can meet the maximum photoelectric conversion output of cadmium telluride glass, and then can meet the power generation demand and energy storage demand of building integrated photovoltaic, effectively improving the photoelectric conversion efficiency of cadmium telluride glass. That is, it effectively solves the defect in the prior art that traditional high-power photovoltaic inverters cannot accurately lock the maximum power points of all cadmium telluride glass power generation.

[0022] 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: multiple voltage sampling values or current sampling values can be obtained by real-time collecting the voltage or current value of cadmium telluride glass; and then according to the multiple voltage sampling values or current sampling values and in combination with the sampling period, the sampling effective value of cadmium telluride glass is determined; and then the real-time working information of cadmium telluride glass can be determined according to the sampling effective value of cadmium telluride glass. Here, the voltage or current in multiple real-time collected cadmium telluride glasses can be observed by an n-order time series array sliding window and averaged to perform digital filtering. That is, on the one hand, it can solve the voltage fluctuation amplitude during work, and on the other hand, it can also solve the high-frequency noise brought by the switching power supply. Specifically, the method for determining the real-time working information of cadmium telluride glass further includes: multiple voltage sampling values X or multiple current sampling values Y can be obtained; Then, according to the acquisition calculation period, the average value of multiple voltage sampling values X or multiple current sampling values Y is calculated to determine the acquisition calculation average value; at the same time, according to the model specifications of the cadmium telluride glass and in combination with the acquisition calculation average value, the filtering and screening information is set; then, according to the filtering and screening information, the voltage sampling value X or multiple current sampling values Y in the subsequent same sampling period can be compared to determine the sampling effective value of the cadmium telluride glass.

[0023] Here, in order to facilitate understanding of how to determine the sampling effective value of the cadmium telluride glass, the following example is given. In a feasible implementation manner, voltage filtering and current filtering are independently performed by their respective arrays. That is, the independent filtering can be performed as follows.

[0024] Specifically, ① The voltage sampling value X or the current sampling value Y enters the nth-order array An in sequence for each calculation period, and shifts to the right in sequence from 1 to n. When running for the first time, the following filtering operation is not started until after n calculation periods; ② At each calculation period, the average value is calculated. The calculation formula for the average value W is as follows: ; ③ At each calculation period, the new sampling 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 regarded as a bad value and does not enter the array An, and An remains the previous value; where n and m are both natural numbers and are selected according to the debugging situation.

[0025] In this embodiment, for the convenience of understanding how to determine the information to be adjusted for cadmium telluride glass based on the sampling effective value of the filtered cadmium telluride glass, the following description is provided. The method for determining the information to be adjusted for cadmium telluride glass includes: determining the real-time working efficiency information of cadmium telluride glass based on the sampling effective value of cadmium telluride glass; that is, the power generation power value of cadmium telluride glass can be determined based on the current and voltage in the sampling effective value of cadmium telluride glass, and then the real-time working efficiency information of cadmium telluride glass can be determined. Then, according to the real-time working efficiency information of cadmium telluride glass and in combination with the model specifications of cadmium telluride glass, a perturbation scheme for adjusting the real-time working efficiency information of cadmium telluride glass can be formulated (such as adjusting the duty cycle, the irradiation direction of cadmium telluride glass, etc.). Then, at least two perturbation factor information can be determined according to the perturbation scheme. Then, according to the multiple perturbation factor information and by collecting the sampling effective value of cadmium telluride glass, the real-time working efficiency information of cadmium telluride glass can be determined in real time. Then, according to the real-time working efficiency information of cadmium telluride glass, the optimal perturbation factor of cadmium telluride glass can be determined. According to the optimal perturbation factor of cadmium telluride glass, the information to be adjusted for cadmium telluride glass can be determined. That is, for the power generation characteristics of cadmium telluride glass, by increasing the variable step size and perturbing the output voltage U of the power generation glass multiple times, the change direction of the output power value P of the power generation glass can be comprehensively judged, the non-linear section with unstable voltage can be identified, false locking can be avoided, and both the optimization speed and the optimization accuracy can be increased. For the convenience of understanding how to determine the optimal perturbation factor, the following example is provided. Specifically, First, the power value P of cadmium telluride glass can be calculated from the current Iw and voltage Uw in the sampling effective value of the filtered cadmium telluride glass. The formula is as follows: , ① At this time, the first perturbation can be set according to the model specifications of cadmium telluride glass, using the minimum step size ∆U1, and observing whether the change direction of P is increasing or decreasing; ② Then, the second perturbation is set, taking the intermediate step size ∆U2, and observing whether the change direction of P is increasing or decreasing; ③ Continue to set the third perturbation, using the maximum step size ∆U3, and observing whether the power change direction is increasing or decreasing; ④ If the power change directions in all three results are the same, take the minimum step size as the locked step size. If the three results are not all the same, take the direction that is the same twice as the power change direction and the maximum step size as the locked step size.

[0026] It should be noted that the minimum step size ∆U1 < the intermediate step size ∆U2 < the maximum step size ∆U3. Among them, in a feasible implementation, the preset minimum step size ∆U1 can be 1% of the standard voltage Voc of cadmium telluride glass, the preset intermediate step size ∆U2 can be 2% of the standard voltage Voc of cadmium telluride glass, and the preset maximum step size ∆U3 can be 3% of the standard voltage Voc of cadmium telluride glass. In practice, the optimal value can be selected according to the actual working conditions of cadmium telluride glass, taking into account both the optimization speed and accuracy. In this embodiment, the disturbance factor information includes: according to the model specifications of cadmium telluride glass and the photovoltaic inverter, the duty cycle of the NMOS switch tube in the cadmium telluride glass can be set to disturb the output voltage of the cadmium telluride glass.

[0027] Refer to Figures 3 to 5, in this embodiment, the present invention further provides a photovoltaic inverter for cadmium telluride glass power generation in BIPV. The photovoltaic inverter used in the power generation method includes: a stabilization circuit, 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 by the output end of the cadmium telluride glass; a conversion circuit, 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 from direct current to alternating current. Among them, the stabilization circuit is a BUCK-mode DCDC circuit, and the conversion circuit is a full-bridge DCAC circuit at the back end. Among them, the stabilization circuit includes: device Q, device Q is a low-resistance NMOS transistor, device Q is electrically connected to the output end of the cadmium telluride glass, and device Q controls the current output by the output end of the cadmium telluride glass to achieve step-down; device D, device D is a low-resistance Schottky diode, device D is electrically connected to device Q, and device D forms a freewheeling loop; device L1, device L1 is a high-frequency low-resistance inductor, device L1 is electrically connected to device Q and device D, and device L1 is used to store and release energy; device C, device C is a high-frequency low-resistance capacitor, device C is electrically connected to device L, and device C is used for filtering. In a feasible manner, the conversion circuit includes: a first conduction circuit, the first conduction circuit includes: device S1 and device S4, device S1 and device S4 conduct with each other; a second conduction circuit, the second conduction circuit includes: device S2 and device S3, device S2 and device S3 conduct with each other; among them, device S1, device S2, device S3, and device S4 are all NMOS transistors; device L2, device L2 is a low-resistance inductor, and device L2 is used for low-pass filtering. That is, the circuit design includes a front-end BUCK DCDC (direct current to direct current) module and a back-end full-bridge DCAC (direct current to alternating current output) module. The unstable voltage Vin and current Iin output by cadmium telluride glass power generation first pass through the stabilization circuit (BUCK-mode DCDC circuit). That is, the current generated in the cadmium telluride glass passes through the voltage stabilization circuit composed of device Q (low-resistance NMOS transistor), D (low-resistance Schottky diode), L1 (high-frequency low-resistance inductor), and C (high-frequency low-resistance capacitor) in the stabilization circuit for voltage stabilization. It controls the current passing through by the pulse width of the PWM waveform to achieve step-down and outputs a stable DC voltage Vdc and DC current Idc, forming a DC source DC, which can supply DC power to the building or directly connect to a local storage battery. The basic working principle of the conversion circuit is to turn on and off devices S1, S2, S3, and S4 through high and low levels during the positive half-cycle t1 and negative half-cycle t2, and generate an alternating output voltage through the direction of the current. The specific implementation means are as follows: 1) Positive half-cycle t1: Devices S1 and S4 are conducting, and devices S2 and S3 are off. The current flows from the positive terminal of the DC power supply through device S1, the load, and device S4 back to the negative terminal of the DC power supply, and the voltage across the load is positive.

[0028] 2) Negative half-cycle t2: Devices S2 and S3 are conducting, and devices S1 and S4 are off. The current flows from the positive terminal of the DC power supply through device S3, the load, and device S2 back to the negative terminal of the DC power supply, and the voltage across the load is negative. After passing through the low-pass filtering of device L2 (low-resistance inductor), the standard alternating current Vac and Iac are output, forming an AC source AC, which can be connected to the local power grid or can be grid-connected to output to the public grid.

[0029] In a third aspect, the present invention further provides a cadmium telluride glass power generation system in BIPV, which employs any one of the photovoltaic inverters for cadmium telluride glass power generation in BIPV described in the first aspect or any one of the cadmium telluride glass power generation methods in BIPV described in the second aspect. The power generation system further includes: a plurality of cadmium telluride glasses, which are used for photovoltaic power generation; a plurality of photovoltaic inverters, which are respectively connected to the plurality of cadmium telluride glasses in one-to-one correspondence, and the photovoltaic inverters are used to process the power generation conditions of each cadmium telluride glass; a sampling module, which is used to collect the working conditions of the cadmium telluride glasses; a control and adjustment module, which is used to adjust according to the working conditions of the cadmium telluride glasses; a perturbation and interference module, which is electrically connected to the control and adjustment module, and the perturbation and interference module performs perturbation and interference adjustment according to the control and adjustment module; and an energy storage module, which is used to store the power generated by the cadmium telluride glasses.

[0030] In some embodiments, the power generation system can communicate using any currently known or future-developed network protocol such as HTTP (Hyper Text Transfer Protocol), and can be interconnected with digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include local area networks ("LAN"), wide area networks ("WAN"), the Internet (e.g., the Internet), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future-developed networks.

[0031] The functions described above herein can be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that can be used include: field programmable gate arrays (FPGA), application specific integrated circuits (ASIC), application specific standard products (ASSP), system on a chip (SOC), complex programmable logic devices (CPLD), etc.

[0032] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a segment of a program, or a portion of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks may occur in a different order than that noted in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0033] Specifically, according to some embodiments of the present disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, some embodiments of the present disclosure include a computer program product that includes a computer program carried on a computer-readable medium, the computer program including program code for performing the methods shown in the flowcharts.

[0034] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A photovoltaic inverter for cadmium telluride glass power generation in BIPV, characterized in that: include: 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 a current and a voltage passing through the stabilization circuit into an alternating current. Among them, the stabilization circuit is a BUCK mode DCDC circuit, and the conversion circuit is a back-end full-bridge DCAC circuit.

2. The photovoltaic inverter for power generation of cadmium telluride glass in BIPV according to claim 1, characterized in that: The stabilization circuit comprises: A device Q, wherein the device Q is a low-resistance NMOS tube, the device Q is electrically connected to the output end of the cadmium telluride glass, and the device Q controls the current output from the output end of the cadmium telluride glass to achieve voltage reduction; 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; Device L1, the device L1 is a high-frequency low-resistance inductor, the device L1 is electrically connected to the device Q and the device D, and the device L1 is used to store and release energy; 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.

3. The photovoltaic inverter for power generation of cadmium telluride glass in BIPV according to claim 2, characterized in that: The conversion circuit comprises: A first conduction circuit, wherein the first conduction circuit comprises: Device S1 and device S4, wherein the devices S1 and S4 are electrically connected to each other; A second conduction circuit, wherein the second conduction circuit comprises: Device S2 and device S3, wherein the devices S2 and S3 are electrically connected to each other; Wherein, the device S1, device S2, device S3 and device S4 are all NMOS tubes; Device L2, the device L2 is a low-resistance inductor, and the device L2 is used for low-pass filtering.

4. A method for generating electricity from cadmium telluride glass in BIPV, using a photovoltaic inverter for generating electricity from cadmium telluride glass in BIPV according to any one of claims 1 to 3, characterized in that: The power generation method further comprises: Obtain the model and specification 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 the working status information of the cadmium telluride glass; According to the model specification 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; Determine the real-time working efficiency information of the cadmium telluride glass according to the real-time working information of the cadmium telluride glass; According to the real-time working efficiency information of the cadmium telluride glass and in combination with the working state information of the cadmium telluride glass, the information to be adjusted of the cadmium telluride glass is determined; 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 are output to store energy.

5. The method for generating electricity using cadmium telluride glass in BIPV according to claim 4, characterized in that: The method for determining real-time working information of cadmium telluride glass comprises: Collecting voltage or current values ​​of the cadmium telluride glass in real time to obtain multiple voltage sampling values ​​or current sampling values; Determine the sampling effective value of the cadmium telluride glass according to the multiple voltage sampling values ​​or the current sampling values ​​and in combination with the 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.

6. The method for generating electricity using cadmium telluride glass in BIPV according to claim 5, characterized in that: The method for determining real-time working information of cadmium telluride glass further includes: Acquire 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 of the subsequent same sampling period.

7. The method for generating electricity using cadmium telluride glass in BIPV according to claim 6, characterized in that: The method for determining the information to be adjusted of the cadmium telluride glass comprises: Determine the real-time working efficiency information of the cadmium telluride glass according to the sampling effective value of the cadmium telluride glass; According to the real-time working efficiency information of the cadmium telluride glass and in combination with the model specifications of the cadmium telluride glass, at least two disturbance factor information are determined; According to information of multiple disturbance factors and collecting sampling effective 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 according to the real-time working efficiency information of the cadmium telluride glass; According to the optimal disturbance factor of the cadmium telluride glass, the information to be adjusted of the cadmium telluride glass is determined.

8. The method for generating electricity using cadmium telluride glass in BIPV according to claim 7, 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.

9. A cadmium telluride glass power generation system in BIPV, characterized in that: A photovoltaic inverter for power generation using cadmium telluride glass in a BIPV as described in any one of claims 1 to 3 or a method for power generation using cadmium telluride glass in a BIPV as described in any one of claims 4 to 8 is used.

10. The cadmium telluride glass power generation system in BIPV according to claim 9, 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, wherein the plurality of photovoltaic inverters are connected to the plurality of cadmium telluride glasses in a one-to-one correspondence, and the photovoltaic inverters are used to process the power generation of each cadmium telluride glass respectively; A sampling module, wherein the sampling module is used to collect the working condition of the cadmium telluride glass; A control and adjustment module, the control and adjustment module is used to make adjustments according to the working conditions of the cadmium telluride glass; A disturbance interference module, the disturbance interference module is electrically connected to the control adjustment module, and the disturbance interference module performs 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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