CN205139717U - Trail intelligent power generation system of solar energy - Google Patents

Abstract

The utility model discloses an intelligent power generation system for tracking solar energy, which comprises a biogas generator, a solar battery group, an intelligent control charger, a storage battery, an inverter, and a controller; connection; the solar cell group is connected to the controller; the controller is also connected to the load after connecting the intelligent control charger, storage battery and inverter in sequence; it also includes a solar cell tracking detection control device connected to the controller. The system complements the advantages of biogas and solar energy, two discontinuous and unstable energy sources, and offsets each other's disadvantages. It is an intelligent control system that can intelligently detect and control the operation of the entire power generation system; it can judge the difference between sunlight and solar panels. The angle between them, and adjust the angle of the solar panel at any time, so as to realize the tracking control that the solar panel can reach the position where the maximum power can be obtained. The tracking is more accurate, and the utilization rate of sunlight is further improved.

Description

An intelligent power generation system that tracks solar energy

technical field

The utility model relates to the field of energy technology, in particular to an intelligent power generation system for tracking solar energy.

Background technique

Solar generator biogas power generation has become one of the green new energy. However, biogas and solar power generation have different advantages and disadvantages, resulting in varying degrees of discontinuity and instability in the power generation state, affecting the overall grid-connected operation, and most of them are in the auxiliary energy state of hydropower and thermal power. Therefore, how to overcome the unsustainable and unstable power generation problems of biogas and solar power generation, so that these two clean energy sources can complement each other, offset each other's disadvantages, and provide a sustainable, stable and uninterrupted new energy source is of great practical significance.

Utility model content

In order to solve the above-mentioned deficiencies in the prior art, the utility model provides an intelligent power generation system for tracking solar energy, which complements the advantages of biogas and solar energy, two discontinuous and unstable energy sources, and offsets each other's disadvantages. An intelligent control system that intelligently detects and controls the work of the entire power generation system; it can judge the angle between the sunlight and the solar panel, and adjust the angle of the solar panel at any time, so as to realize the tracking control that the solar panel can reach the position where the maximum power is obtained. Tracking is more precise, further improving the utilization of sunlight.

The technical problem to be solved by the utility model is realized through the following technical solutions:

An intelligent power generation system for tracking solar energy, including a biogas generator, a solar cell group, an intelligent charger, a storage battery, an inverter, and a controller; the biogas generator is respectively connected to a load and a controller through a rectifier; the solar The battery pack is connected to the controller; the controller is also connected to the load after being connected to the intelligent control charger, storage battery and inverter in sequence; it also includes a solar battery tracking detection control device connected to the controller.

Further, the solar battery tracking detection control device includes a detection unit that generates a detection voltage according to the intensity of light, a processing unit that receives the detection voltage and generates a control signal through logical operation, and a horizontal motor and an elevation motor arranged on the solar battery group; The processing unit is connected with the controller to send control signals; the controller is respectively connected with the horizontal motor and the elevation motor, and drives and controls the horizontal motor and the elevation motor through the horizontal drive circuit and the elevation drive circuit respectively according to the control signals.

Further, it also includes a frequency modulation regulator connected between the biogas generator and the rectifier.

Further, it also includes a current limiting protection device connected between the inverter and the load.

Further, the controller includes a single-chip microcomputer, a sensor and a relay, and the single-chip microcomputer is respectively connected with the sensor and the relay, and the sensor is used to respectively collect the voltage at both ends of the solar cell group, the output voltage of the biogas generator and the voltage of the storage battery, The single-chip microcomputer controls the on-off of the high-current circuit in the working circuit by controlling the closing and opening of the relay.

Further, the single-chip microcomputer is an STM32 single-chip microcomputer.

Further, the sensor includes a first voltage sensor connected to the solar cell group state detection device, and a second voltage sensor connected to the biogas engine state detection device.

Further, the sensor also includes a third voltage sensor, which is used to collect the voltage between the two poles of the storage battery to determine the battery capacity.

Furthermore, the relay includes a first relay placed at the on-off point of the solar cell group and the biogas generator for battery charging selection, and a first relay placed at the on-off point of the biogas generator and the inverter for the load power supply selection. at the second relay.

The utility model has the following beneficial effects:

This intelligent power generation system integrates single-chip control technology, sensor technology and relay protection technology, and complements the advantages of biogas and solar energy, two unsustainable and unstable energy sources, and offsets each other's disadvantages. It is a set of intelligent detection and control. An intelligent power generation system that works with the entire power generation system;

This system can monitor the working status of the solar battery group, the working status of the biogas generator, the battery power, and the power distribution output in real time, and carry out calculation and analysis on the collected data, and control the on-off of the circuit switch circuit, with real-time monitoring and intelligent judgment , fully automatic switching features, sustainable and stable supply of uninterrupted power supply, not only can be used as an auxiliary energy source for the grid, but also can be used as a mainstream power source, suitable for power distribution in remote areas;

This system can judge the angle between the sunlight and the solar panel, and adjust the angle of the solar panel at any time to realize the tracking control that the solar panel can reach the position where the maximum power is obtained. The tracking is more accurate and the utilization rate of sunlight is further improved. , which solves the problem that some methods and devices for maximum power tracking in the prior art are not accurate enough based on the historical curve of the current or voltage of the solar cell;

As a control terminal, this system can realize human-computer interaction, so that users can also participate in the control of the entire system, remotely monitor and determine the power supply mode and power supply time.

Description of drawings

Fig. 1 is the principle frame diagram of the utility model intelligent power generation system;

Fig. 2 is a schematic frame diagram of the controller of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Please refer to Figure 1, which shows an intelligent power generation system for solar and biogas complementary power generation, which includes biogas generators, frequency modulation regulators, rectifiers, solar battery packs, intelligent chargers, batteries, inverters, and controllers and a current limiting protection device, also including a WIFI communication module and a solar battery tracking detection control device for making the system a WIFI terminal that can be remotely controlled, and the WIFI communication module and the solar battery tracking detection control device are all connected to the controller connect. Wherein, the biogas generator is sequentially connected to a frequency modulation regulator and a rectifier, and the rectifier is connected to the load to directly supply power to it; The charger, battery, and inverter are then connected to the current limiting protection device, and connected to the load through the current limiting protection device.

The solar battery tracking detection control device includes a detection unit, a processing unit, a horizontal motor and an elevation motor, the detection unit is used to generate a detection voltage according to the intensity of light, and the processing unit is used to receive the detection voltage and generate a control voltage through logical operation signal; the processing unit is connected with the controller to send a control signal to the controller; the horizontal motor and the elevation motor are all arranged on the solar cell group, and both are connected with the controller, and the controller according to the control signal The horizontal motor and the elevation motor are respectively driven and controlled through the horizontal drive circuit and the elevation drive circuit. The detecting unit plays a role of detecting the angle between the incident sunlight and the normal line of the battery panel of the solar battery group. According to the detection voltage generated by the detection unit, the solar battery tracking detection control device is input to the controller through logic operation processing, and the controller judges the movement direction of the solar battery panel, and drives the relevant motor in time to adjust the solar battery panel. Attitude, so that it reaches the position where the maximum power is absorbed, and the tracking is more accurate, which solves the problem that some methods and devices for maximum power tracking in the prior art are mainly based on the historical curve of the current or voltage of the solar cell, which is not accurate enough.

The WIFI communication module has the function of surfing the Internet, and cooperates with the developed corresponding remote background server and terminal application software, so that the user can remotely control the system anytime and anywhere. The WIFI communication module can be connected to the remote background server, and the user can install the corresponding APP software (including ios version, Android version, etc.) The controller can be bound and connected in real time to remotely control the system in different places; users can also log in to the remote background server through the Web to remotely control the system in different places, so that users can observe the working conditions of the system at any time and participate in the entire system remote control anytime, anywhere.

The controller is the core of this system, which can monitor the working status of the solar battery group, the working status of the biogas generator, the battery power, and the power distribution output in real time, and carry out calculation and analysis on the collected data, and control the switching of the circuit On and off, it has the characteristics of real-time monitoring, intelligent judgment, and automatic switching.

Please refer to Fig. 2, described controller comprises single-chip microcomputer, sensor and relay, and adopts special-purpose interface to carry out docking, described single-chip microcomputer can be STM32 single-chip microcomputer, also can adopt other elements with the same effect simultaneously, preferred STM32 single-chip microcomputer of the present invention. The sensor includes a first voltage sensor, a second voltage sensor and a third voltage sensor, wherein the first voltage sensor is connected to the solar cell group state detection device and placed in the port connecting the output poles of the solar cell group to the controller, It is used to collect the voltage at both ends of the solar cell group to judge the working state of the solar cell group; the second voltage sensor is connected to the state detection device of the biogas engine, placed at the output poles of the frequency modulation regulator and connected to the controller In the port, it is used to collect the output voltage of the frequency modulation regulator to judge the working state of the biogas generator; the third voltage sensor is placed in the port connecting the two poles of the battery to the controller, and is used to collect the voltage between the two poles of the battery. voltage to judge the battery charge. The collected voltage can be directly input to the IO port of the STM32 single-chip microcomputer to read the AD, retrieve the variable, and compare it with the preset threshold to judge the working status of the solar battery pack, battery power and whether the biogas generator is working and working status .

The relays include a first relay arranged at the on-off place where the solar cell group and the biogas generator select to charge the battery, and a second relay arranged at the place where the biogas generator and the inverter select the power supply for the load. relay. These two relays are directly powered by the battery that comes with the controller. The battery is connected to the single-chip microcomputer through the voltage divider module to supply power to the single-chip microcomputer (provide a suitable working voltage for the single-chip microcomputer), and the single-chip microcomputer controls the opening and closing of the two relays through the program solidified in it. Break, and then achieve real-time monitoring and control of each part of the system.

The functions of each component of the system are as follows:

Biogas generator: The biogas generator can provide a rated generating power of 1800W, AC220V50-60hz output; its continuous working time is 10 hours. It starts manually and stops working automatically after 10 hours of operation.

Frequency modulation voltage regulator: adjust the AC220V alternating current generated by the biogas generator to AC220V50hz sinusoidal alternating current output; perform frequency modulation and voltage regulation on the unstable current generated by the generator to avoid damage to user equipment.

Rectification device: adjust the output voltage of the frequency modulation regulator to DC14.4V for output.

Solar battery pack: connect two 160w solar panels in parallel, and output DC18V rated power of 320w.

Smart Charger: It can intelligently identify the storage status of the battery and the charging protection function. The intelligent control charger can be an MPPT intelligent control charger, which can intelligently track the maximum power generated by the solar panel and increase the efficiency of solar power generation by 10%.

Battery: 100ahDC12V direct-current output lead-acid battery is used to store the surplus electric energy generated by solar panels and biogas generators as a backup power supply for the entire system.

Inverter: As a backup power supply, the DC12V output power of the battery is used for inverter output at AC220V50HZ to directly supply the load.

Current limiting protection device: Use a 10A current limiter and place it at the total output of the equipment. When the user overloads electricity or the circuit is short-circuited, the current limiter will automatically disconnect to protect the entire device.

WIFI communication module: It has the function of surfing the Internet. With the development of the corresponding remote background server and terminal application software, the user can remotely control the system anytime and anywhere.

Solar battery tracking detection control device: judge the angle between the sunlight and the solar panel, and adjust the angle of the solar panel at any time, so as to realize the tracking control that the solar panel can reach the position where the maximum power is obtained, and the tracking is more accurate.

The functions of each part of the controller are as follows:

STM32 single-chip microcomputer: input a set of C language program into it, the voltage collected by the voltage sensor can be directly input into the IO port of the STM32 single-chip microcomputer, read AD, retrieve the variable, and compare it with the preset threshold in the program to judge the solar battery The working status of the board, battery power, and whether the biogas generator is working. In this way, the switching of the relay is controlled by the program, and then the real-time monitoring and control of each part of the equipment can be achieved.

Voltage sensor: It is used to collect the terminal voltage of the solar cell group, the output terminal voltage of the frequency modulation voltage stabilizing device and the voltage of the two poles of the battery, and transmit the electrical signal to the single-chip microcomputer.

Voltage divider module: divide the 12V battery voltage by 7V to provide 5V power supply for the microcontroller.

Controller battery: output DC12V current to supply power for relays and single-chip microcomputers.

Relay: Use the small signal current output by the single-chip microcomputer to control the closing and opening of the relay, thereby controlling the on-off of the high-current circuit of the working circuit.

It should be noted that the above-mentioned conditions such as the model parameters of each component of the system and each component of the controller are not limited to the disclosed range, and components with the same function can also be used.

The working principle of this intelligent power generation system is: using a biogas generator and a solar cell group as a power supply.

After the electric energy from the biogas generator passes through the frequency modulation and voltage stabilizing device, one path is directly supplied to the load, and the other path is rectified and used as one of the charging power sources for the battery; at this time, the first sensor in the controller will automatically collect Voltage, to judge the working status of the solar battery group, if the terminal voltage of the solar battery group is above 16V, the controller will automatically control its internal relay to switch the charging to the solar panel terminal, otherwise it will be charged by a biogas generator; during the charging process, The intelligent control charger will automatically monitor the power of the battery, and switch between fast charging and floating charging modes accordingly. Similarly, the external output also requires a similar switching process, that is, when supplying power to the load, the second sensor inside the controller will automatically collect the output voltage of the frequency modulation regulator to judge whether the biogas generator is working; if the biogas generator is working , the controller will drive its internal relay to turn on the external output switch of the biogas generator, and at the same time close the external output switch of the inverter; if the generator stops working, the controller will automatically turn on the external output switch of the inverter and close the biogas generator External output switch. When the equipment is working as a whole, in order to protect the circuit, when the inverter is working on the load, the charging process will be closed by the controller program, that is, the charging and discharging of the battery cannot be carried out at the same time.

According to the detection voltage generated by the detection unit, the solar cell tracking detection control device is input to the controller through logic operation processing, and then the controller judges the movement direction of the solar cell panel, and drives the relevant motor in time to adjust the attitude of the solar cell panel , so that it reaches the position where the maximum power is absorbed, and the tracking is more accurate, which solves the problem that some methods and devices for maximum power tracking in the prior art are mainly based on the historical curve of the current or voltage of the solar cell and are not accurate enough.

Users can bind and real-time connect with the controller of this system through the remote background server, and remotely control the system in different places; users can also log in to the remote background server through the Web in different places to remotely control the system, so that users can observe at any time The working status of the system, and participate in the control of the whole system, remote control anytime and anywhere, can realize human-computer interaction, determine the power supply mode and power supply time.

The above-mentioned embodiments only express the implementation manner of the present utility model, and its description is comparatively specific and detailed, but can not therefore be interpreted as the restriction to the patent scope of the present utility model, as long as adopt the form of equal replacement or equivalent transformation to obtain All technical solutions should fall within the protection scope of the present utility model.

Claims (9)

1. An intelligent power generation system for tracking solar energy is characterized in that it comprises a biogas generator, a solar battery pack, an intelligent control charger, a storage battery, an inverter, and a controller; connected to the controller; the solar cell group is connected to the controller; the controller is also connected to the intelligent control charger, the storage battery, and the inverter in sequence and then connected to the load; it also includes a solar cell tracking detection control device connected to the controller. 2. The intelligent power generation system for tracking solar energy according to claim 1, wherein the solar battery tracking detection control device includes a detection unit that generates a detection voltage according to the intensity of light, receives the detection voltage and generates a control signal through logical operation The processing unit, the horizontal motor and the elevation motor arranged on the solar cell group; the processing unit is connected with the controller to send control signals; and the elevation angle driving circuit drives and controls the horizontal motor and the elevation angle motor. 3. The intelligent power generation system for tracking solar energy according to claim 1, further comprising a frequency modulation regulator connected between the biogas generator and the rectifier. 4. The intelligent power generation system for tracking solar energy according to claim 1, further comprising a current limiting protection device connected between the inverter and the load. 5. the intelligent power generation system of tracking solar energy according to claim 1, is characterized in that, described controller comprises single-chip microcomputer, sensor and relay, and described single-chip microcomputer is connected with sensor, relay respectively, and described sensor is used for collecting solar cell respectively The two-terminal voltage of the group, the output voltage of the biogas generator and the voltage of the storage battery, the single-chip microcomputer controls the on-off of the high-current circuit in the working circuit by controlling the closing and opening of the relay. 6. The intelligent power generation system for tracking solar energy according to claim 5, characterized in that the single-chip microcomputer is a STM32 single-chip microcomputer. 7 . The intelligent power generation system for tracking solar energy according to claim 5 , wherein the sensor comprises a first voltage sensor connected to a solar battery pack state detection device, and a second voltage sensor connected to a biogas engine state detection device. 8 . The intelligent power generation system for tracking solar energy according to claim 7 , wherein the sensor further comprises a third voltage sensor for collecting the voltage between two poles of the storage battery to determine the battery capacity. 9. The intelligent power generation system for tracking solar energy according to claim 5, characterized in that, the relay comprises a first relay arranged at the on-off place where the solar cell group and the biogas generator are selected for charging the storage battery and arranged at the The second relay at the point where the biogas generator and the inverter select the power supply for the load.