Wind and light complementation cooperative controller for wind and light station and use method of wind and light complementation cooperative controller

Abstract

The invention provides a wind-solar complementary cooperative controller for a wind-solar station and a use method, and the controller comprises a controller housing, a display screen is installed on the front side surface of the controller housing, a plurality of interfaces are installed on one side of the controller housing, and a main control board is installed in an inner cavity of the controller housing. A main control unit, a motor driving unit, a data transmission unit, a PWM rectifying unit, a solar panel control unit and a wireless transceiving unit are installed on the main control board, the input end of the data transmission unit is connected with a rotating speed acquisition module, a current acquisition module and a voltage acquisition module, and the output end of the data transmission unit is connected with the main control unit; the main control unit is connected with the wind driven generator through the motor driving unit, the wind driven generator is electrically connected with the storage battery pack, the PMW rectifying unit is connected with the main control unit and the storage battery pack, and the solar panel control unit is connected with the main control unit and the storage battery pack. The system can simultaneously control the wind driven generator and the solar cell panel to carry out safe and efficient intelligent charging on the storage battery, and the cooperative control efficiency is high.

Description

Technical Field

[0001] The present application relates to the technical field of wind-solar complementary coordinated control, and in particular to a wind-solar complementary coordinated controller for a wind-solar station and a method of use. Background Art

[0002] The wind-solar hybrid collaborative controller has a PWM charging control mode, charging with battery reverse connection, photovoltaic battery reverse connection protection function, two-way load overcurrent, short-circuit alarm protection function, two-way load multiple control modes: light control, time control, full open function, battery overcharge and over-discharge alarm protection function, two-way load protection function under different voltages, photovoltaic input lightning protection function, battery temperature compensation function, effectively extending the service life of the battery system abnormal alarm protection function, RS485 communication function, working status and power generation data can be uploaded in real time, background (expandable GPRS wireless, TCP / IP wired communication) light-controlled lighting: automatically turn on the lights at dark and automatically turn off the lights at dawn.

[0003] The current wind-solar hybrid collaborative controller has low collaborative control efficiency, which affects the charging efficiency of the battery. Therefore, it is necessary to design a wind-solar hybrid collaborative controller for wind-solar stations. Summary of the invention

[0004] The present application provides a wind-solar complementary collaborative controller for a wind-solar station and a method of use to solve the problem of low collaborative control efficiency in the prior art, and achieves the ability to simultaneously control wind turbines and solar panels to intelligently charge batteries safely and efficiently. The collaborative control efficiency is high, current and voltage are effectively regulated, and power generation efficiency is improved.

[0005] The present application provides a wind-solar hybrid cooperative controller for a wind-solar station, comprising a controller housing;

[0006] A display screen is installed on the front side of the controller housing, and a plurality of interfaces are installed on one side of the controller housing;

[0007] A main control board is installed in the inner cavity of the controller housing, and a main control unit, a motor drive unit, a data transmission unit, a PWM rectifier unit, a solar panel control unit and a wireless transceiver unit are installed on the main control board;

[0008] The input end of the data transmission unit is respectively connected to the speed acquisition module, the current acquisition module, and the voltage acquisition module, and the output end of the data transmission unit is connected to the main control unit;

[0009] The main control unit is connected to a wind turbine generator via a motor drive unit, and the wind turbine generator is electrically connected to a battery pack;

[0010] The PMW rectifier unit is connected to the main control unit and the battery pack respectively;

[0011] The solar panel control unit is connected to the main control unit and the battery pack respectively;

[0012] The main control unit is connected to the background monitoring center via a wireless communication module.

[0013] Preferably, the multiple interfaces include an I / O interface, a USB communication interface, an A / D input interface, and a PWM output interface.

[0014] Preferably, the PMW rectifier unit includes three transistor groups and a second electrolytic capacitor connected in parallel, which are divided into a first transistor group, a second transistor group and a third transistor group. The first transistor group includes a field effect transistor A and a field effect transistor B connected in series; the second transistor group includes a field effect transistor C and a field effect transistor D connected in series; the third transistor group includes a field effect transistor E and a field effect transistor F connected in series; capacitor A is connected in parallel between the first transistor group and the second transistor group; capacitor B is connected in parallel between the second transistor group and the third transistor group.

[0015] Preferably, a PID controller is further included, and the PID controller is respectively connected to the main control unit and the motor drive unit.

[0016] Preferably, the wireless communication module adopts an XBee wireless transceiver module, and the XBee wireless transceiver module adopts the DIGIMESH communication protocol to reduce the delay and packet loss rate of command sending.

[0017] Preferably, it further comprises a comparison unit, which is connected to the main control unit and is used to compare the collected rotation speed, current and voltage of the generator with preset values.

[0018] Preferably, a method for using a wind-solar hybrid collaborative controller for a wind-solar station comprises the following steps:

[0019] A. First, the speed acquisition module, current acquisition module, and voltage acquisition module respectively acquire corresponding speed data, current data, and voltage data;

[0020] B. The collected data are transmitted to the main control unit through the data transmission unit;

[0021] C. The comparison unit compares the collected data with the preset data and feeds back the comparison result to the main control unit;

[0022] D. The main control unit controls the wind turbine to work through the motor drive unit and stabilizes the power generation voltage and current of the wind turbine through the PMW rectifier unit;

[0023] E. PID controller achieves better coordinated control effect on multiple motors and ultimately achieves stable control of a single motor;

[0024] F. The main control unit controls the motor drive unit or the solar panel control unit to work according to the compared voltage and current data.

[0025] Beneficial effects:

[0026] (1) The present invention has a simple working principle and a high degree of intelligence. It can simultaneously control the wind turbine and the solar panel to intelligently charge the battery safely and efficiently. It has high collaborative control efficiency, effectively regulates current and voltage, and improves power generation efficiency.

[0027] (2) The PMW rectifier unit used in the present invention has a voltage-limited and current-limited charging mode to ensure that the battery is always in the best charging state. In addition, it can also ensure that the battery can be charged at low wind speed and rotation speed of the wind turbine. On the other hand, under the same conditions, the wind turbine power generation utilization rate can be increased by 10%-15%.

[0028] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a block diagram of the working principle of the present invention;

[0032] Figure 3 This is the principle diagram of the PMW rectifier unit of the present invention;

[0033] Figure 4 It is the work flow chart of the present invention;

[0034] Explanation of the accompanying drawings: controller housing 1, display screen 2, main control board 3, main control unit 4, motor drive unit 5, data transmission unit 6, PWM rectifier unit 7, solar panel control unit 8, wireless transceiver unit 9, speed acquisition module 10, current acquisition module 11, voltage acquisition module 12, motor drive unit 13, wind turbine 14, battery pack 15, background monitoring center 16, I / O interface 17, USB communication interface 18, A / D input interface 19, PWM output interface 20, electrolytic capacitor 21, PID controller 22, comparison unit 23. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the present application. For example, in the description of the present application, the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.

[0039] In addition, the expressions of indicated directions such as the X direction, the Y direction, and the Z direction used to illustrate the operation and construction of the components of the present embodiment are not absolute but relative, and although these indications are appropriate when the components are in the positions shown in the figures, when these positions change, these directions should be interpreted differently to correspond to the changes.

[0040] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0041] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap-on or snap-fit ​​connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0043] See also Figure 1-Figure 4 , the present application discloses a wind-solar complementary cooperative controller for a wind-solar station, comprising a controller housing 1;

[0044] The display screen 2 is installed on the front side of the controller housing 1, and multiple interfaces are installed on one side of the controller housing 1, including an I / O interface 17, a USB communication interface 18, an A / D input interface 19, and a PWM output interface 20;

[0045] A main control board 3 is installed in the inner cavity of the controller housing 1, and a main control unit 4, a motor drive unit 5, a data transmission unit 6, a PWM rectifier unit 7, a solar panel control unit 8 and a wireless transceiver unit 9 are installed on the main control board 3;

[0046] The input end of the data transmission unit 6 is respectively connected to the speed acquisition module 10, the current acquisition module 11, and the voltage acquisition module 12, and the output end of the data transmission unit 6 is connected to the main control unit 4;

[0047] The main control unit 4 is connected to a wind generator 14 via a motor drive unit 13, and the wind generator 14 is electrically connected to a battery pack 15;

[0048] The PMW rectifier unit 7 is connected to the main control unit 4 and the battery pack 15 respectively;

[0049] The solar panel control unit 8 is connected to the main control unit 4 and the battery pack 15 respectively;

[0050] The main control unit 4 is connected to the background monitoring center 16 via the wireless communication module 9 .

[0051] In the present invention, the PMW rectifier unit 7 includes three transistor groups and electrolytic capacitors 21 connected in parallel, which are divided into a first transistor group, a second transistor group and a third transistor group. The first transistor group includes a field effect transistor A1a and a field effect transistor B2a connected in series; the second transistor group includes a field effect transistor C3a and a field effect transistor D4a connected in series; the third transistor group includes a field effect transistor E5a and a field effect transistor F6a connected in series; a capacitor A1b is connected in parallel between the first transistor group and the second transistor group; and a capacitor B2b is connected in parallel between the second transistor group and the third transistor group. The PMW rectifier unit used in the present invention has a voltage-limited and current-limited charging mode to ensure that the battery is always in the best charging state. In addition, it can also ensure that the fan can charge the battery at low wind speed and rotation speed; on the other hand, it can improve the power generation utilization rate of the fan by 10%-15% under the same conditions.

[0052] The present invention also includes a PID controller 22, which is respectively connected to the main control unit 4 and the motor drive unit 13. The PID controller has good anti-interference ability, a stable time period, and a small overshoot. The fuzzy PID control of a single motor has good single motor control performance.

[0053] In the present invention, the wireless communication module adopts an XBee wireless transceiver module, and the XBee wireless transceiver module adopts the DIGIMESH communication protocol to reduce the delay and packet loss rate of instruction sending.

[0054] In addition, the present invention further comprises a comparison unit 23, which is connected to the main control unit 4 and is used for comparing the collected rotation speed, current and voltage of the generator with preset values.

[0055] Working principle: A method for using a wind-solar hybrid cooperative controller for a wind-solar station includes the following steps:

[0056] A. First, the speed acquisition module, current acquisition module, and voltage acquisition module respectively acquire corresponding speed data, current data, and voltage data;

[0057] B. The collected data are transmitted to the main control unit through the data transmission unit;

[0058] C. The comparison unit compares the collected data with the preset data and feeds back the comparison result to the main control unit;

[0059] D. The main control unit controls the wind turbine to work through the motor drive unit and stabilizes the power generation voltage and current of the wind turbine through the PMW rectifier unit;

[0060] E. PID controller achieves better coordinated control effect on multiple motors and ultimately achieves stable control of a single motor;

[0061] F. The main control unit controls the motor drive unit or the solar panel control unit to work according to the compared voltage and current data.

[0062] The present invention has a simple working principle and a high degree of intelligence. It can simultaneously control the wind turbine and the solar panel to intelligently charge the battery safely and efficiently. It has high collaborative control efficiency, effectively regulates current and voltage, and improves power generation efficiency.

[0063] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A wind-solar hybrid collaborative controller for a wind-solar station, characterized in that: It comprises a controller housing (1); A display screen (2) is installed on the front side of the controller housing (1), and a plurality of interfaces are installed on one side of the controller housing (1); A main control board (3) is installed in the inner cavity of the controller housing (1), and a main control unit (4), a motor drive unit (5), a data transmission unit (6), a PWM rectifier unit (7), a solar panel control unit (8) and a wireless transceiver unit (9) are installed on the main control board (3); The input end of the data transmission unit (6) is respectively connected to a speed acquisition module (10), a current acquisition module (11), and a voltage acquisition module (12), and the output end of the data transmission unit (6) is connected to a main control unit (4); The main control unit (4) is connected to a wind generator (14) via a motor drive unit (13), and the wind generator (14) is electrically connected to a battery pack (15); The PMW rectifier unit (7) is respectively connected to the main control unit (4) and the battery pack (15); The solar panel control unit (8) is connected to the main control unit (4) and the battery pack (15) respectively; The main control unit (4) is connected to a background monitoring center (16) via a wireless communication module (9).

2. A wind-solar hybrid collaborative controller for a wind-solar station according to claim 1, characterized in that: The multiple interfaces include an I / O interface (17), a USB communication interface (18), an A / D input interface (19), and a PWM output interface (20).

3. A wind-solar hybrid coordinated controller for a wind-solar station according to claim 1, characterized in that: The PMW rectifier unit (7) comprises three transistor groups and electrolytic capacitors (21) connected in parallel, which are divided into a first transistor group, a second transistor group and a third transistor group. The first transistor group comprises a field effect transistor A (1a) and a field effect transistor B (2a) connected in series; the second transistor group comprises a field effect transistor C (3a) and a field effect transistor D (4a) connected in series; the third transistor group comprises a field effect transistor E (5a) and a field effect transistor F (6a) connected in series; a capacitor A (1b) is connected in parallel between the first transistor group and the second transistor group; and a capacitor B (2b) is connected in parallel between the second transistor group and the third transistor group.

4. The wind-solar hybrid cooperative controller for a wind-solar station according to claim 1, characterized in that: It also includes a PID controller (22), wherein the PID controller (22) is respectively connected to the main control unit (4) and the motor drive unit (13).

5. The wind-solar hybrid cooperative controller for a wind-solar station according to claim 1, characterized in that: The wireless communication module adopts an XBee wireless transceiver module, and the XBee wireless transceiver module adopts the DIGIMESH communication protocol to reduce the delay and packet loss rate of instruction sending.

6. The wind-solar hybrid coordinated controller for a wind-solar station according to claim 1, characterized in that: It also includes a comparison unit (23), which is connected to the main control unit (4) and is used to compare the collected rotation speed, current and voltage of the generator with preset values.

7. A method for using a wind-solar hybrid cooperative controller for a wind-solar station according to claim 1, characterized in that: The method of use includes the following steps: A. First, the speed acquisition module, current acquisition module, and voltage acquisition module respectively acquire corresponding speed data, current data, and voltage data; B. The collected data are transmitted to the main control unit through the data transmission unit; C. The comparison unit compares the collected data with the preset data and feeds back the comparison result to the main control unit; D. The main control unit controls the wind turbine to work through the motor drive unit and stabilizes the power generation voltage and current of the wind turbine through the PMW rectifier unit; E. PID controller achieves better coordinated control effect on multiple motors and ultimately achieves stable control of a single motor; F. The main control unit controls the motor drive unit or the solar panel control unit to work according to the compared voltage and current data.

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