CN110620420A - Wind-solar hybrid controller, control system and method - Google Patents
Wind-solar hybrid controller, control system and method Download PDFInfo
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- CN110620420A CN110620420A CN201810635127.9A CN201810635127A CN110620420A CN 110620420 A CN110620420 A CN 110620420A CN 201810635127 A CN201810635127 A CN 201810635127A CN 110620420 A CN110620420 A CN 110620420A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
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Abstract
The invention discloses a wind-solar hybrid controller, a control system and a method. The wind-solar hybrid controller comprises a storage battery charging state judging part, a storage battery voltage signal judging part and a charging state judging part, wherein the storage battery charging state judging part is configured to receive the storage battery voltage signal and judge the charging state of the storage battery; and a wind power generator voltage/current comparison part configured to receive the wind power generator voltage/current signal and compare with a preset voltage/current; the wind driven generator rotating speed comparison part is configured to receive a wind driven generator rotating speed signal and compare the wind driven generator rotating speed signal with a preset rotating speed; and a wind speed comparison part configured to receive the current wind speed signal and compare with a preset wind speed; and a PWM starting part configured to receive output results of the storage battery charging state judging part, the wind power generator voltage/current comparing part, the wind power generator rotating speed comparing part and the wind speed comparing part and send a starting signal to the PWM controller when any one PWM starting condition is satisfied.
Description
Technical Field
The invention belongs to the field of wind power generation, and particularly relates to a wind-solar hybrid controller, a wind-solar hybrid control system and a wind-solar hybrid control method.
Background
The wind-solar hybrid controller is specially designed for a high-end small and medium-sized wind-solar hybrid system, integrates wind energy and solar energy control, is particularly suitable for a wind-solar hybrid power supply system and a wind-solar hybrid monitoring system, and can simultaneously control a wind driven generator and a solar cell panel to carry out safe and efficient intelligent charging on a storage battery. The wind-solar hybrid controller is the most core component in an off-grid street lamp system, and the performance of the wind-solar hybrid controller influences the service life and the operation stability of the whole system, particularly the service life of a storage battery.
The existing wind-solar hybrid controller has the following defects:
(1) the existing wind-solar hybrid controller only has a PWM unloading function and controls PWM unloading only through a voltage signal. Due to the fact that the wind-solar hybrid power generation system is complex in application environment, the working states of the wind driven generator and the solar panel are greatly influenced by the external environment, and the wind driven generator and the solar panel are controlled only through voltage, and the whole system cannot be guaranteed to operate stably under any conditions. Thus, the direct current part of the wind driven generator after rectification is controlled only by PWM, and the wind driven generator cannot be controlled under the condition of strong wind or the fault of a system load.
(2) The existing wind-solar hybrid controller cannot set charging current according to storage batteries with different specifications.
(3) In the existing wind-solar hybrid controller, a user cannot set and adjust working parameters by himself after leaving a factory.
(4) The wind-solar hybrid control system is used as equipment for connecting the wind driven generator, the solar panel and the storage battery, and parameters of all system equipment can be acquired only through the wind-solar hybrid controller; however, the existing wind-solar hybrid controller is not connected with the internet of things, and real-time data transmission and cloud storage cannot be realized.
Disclosure of Invention
In order to solve the disadvantages of the prior art, a first object of the present invention is to provide a wind-solar hybrid controller, which can ensure stable operation of a wind power generator and a solar panel.
The wind-solar hybrid controller is connected with the PWM controller. The wind-solar hybrid controller comprises:
a battery state-of-charge determination section configured to receive the battery voltage signal and determine a state of charge of the battery; and
a wind power generator voltage/current comparison part configured to receive a wind power generator voltage/current signal and compare the wind power generator voltage/current signal with a preset voltage/current; and
a wind power generator rotating speed comparing part which is configured to receive a wind power generator rotating speed signal and compare the wind power generator rotating speed signal with a preset rotating speed; and
a wind speed comparison part configured to receive a current wind speed signal and compare with a preset wind speed; and
a PWM starting part configured to receive output results of the storage battery charging state judging part, the wind power generator voltage/current comparing part, the wind power generator rotating speed comparing part and the wind speed comparing part and send a starting signal to the PWM controller when any one PWM starting condition is satisfied; the PWM starting conditions include:
a1. the charging state of the storage battery is floating charging, and the voltage of the storage battery reaches the floating charging voltage;
b1. the voltage/current of the wind driven generator reaches the set voltage/set current;
c1. the voltage/current of the solar panel reaches the set voltage/set current;
d1. the rotating speed of the wind driven generator reaches the set rotating speed of the wind driven generator;
e1. the current wind speed reaches the set wind speed.
Among them, in order to balance the capacity loss due to the self-discharge of the battery, it is necessary to perform a constant voltage charge continuously for a long time on the secondary battery. This charging mode is referred to as float charging, also called float charging.
Float voltages are already specified in battery specifications.
Further, the wind-solar hybrid controller is further connected to the switching element controller, and the wind-solar hybrid controller further includes:
a switching element control section configured to receive output results of the storage battery charge state determination section, the wind power generator voltage/current comparison section, the wind power generator rotational speed comparison section, and the wind speed comparison section, and to send a start signal to the switching element controller when any one of the switching element start conditions is satisfied; the switching element activation condition includes:
a2. fully charging the storage battery;
b2. the voltage/current of the wind driven generator reaches a preset maximum voltage/a preset maximum current;
c2. the rotating speed of the wind driven generator reaches the preset maximum rotating speed of the wind driven generator;
d2. the current wind speed is greater than or equal to the preset maximum wind speed of the wind driven generator.
The switching element includes, but is not limited to, a relay, an ac contactor, and a thyristor, and may be other existing switching elements.
The invention controls the action of the switch element through the switch element control part, so that the wind driven generator enters a braking (braking) state, and the running safety of the wind driven generator is ensured.
Further, the wind-solar hybrid controller is also connected with a solar panel switch controller; the wind-solar hybrid controller further comprises:
and a solar panel control part configured to receive the solar panel voltage/current signal, compare the solar panel voltage/current signal with a preset solar panel maximum voltage/maximum current, and output a signal for disconnecting the solar panel to the solar panel switch controller when the solar panel current/voltage signal reaches the maximum voltage/maximum current.
When the solar panel reaches the maximum voltage or the maximum current, the solar panel is disconnected, so that the stable operation of the solar panel is ensured.
Further, the wind-solar hybrid controller further comprises a reserved multi-way switch control interface, wherein the reserved multi-way switch control interface is configured to design a switch element control part according to different requirements of users, and a main contact point signal is output to other equipment through a switch element.
Further, the wind-solar hybrid controller further includes a reserved function upgrade interface configured to: and updating the function of the wind-solar hybrid controller by upgrading the firmware of the device.
Therefore, the problem that a user cannot set and adjust the working parameters of the conventional wind-solar hybrid controller after leaving a factory is solved.
Further, the wind-solar hybrid controller further comprises a communication interface based on optoelectronic isolation, which is configured to: and modifying the working parameters of the wind-solar hybrid controller, and reading the working state of the controller.
The communication interface based on photoelectric isolation adopts an international modbus communication protocol, and is convenient to integrate.
In addition, the external signal input interface based on photoelectric isolation can also read in monitoring signals, so that the interference of external signals to the system operation can be reduced.
The wind-solar hybrid controller also has a power generation storage function based on a high-precision RTC clock, the power generation is stored in real time, and the power generation of equipment can be read through a communication interface based on photoelectric isolation.
The wind-solar hybrid controller is based on ADC sampling of multiple sampling filtering, so that the sampling precision is improved.
The communication interface based on the photoelectric isolation can also be configured to use the number of switching elements (such as relays), connection and disconnection voltages; each sampling range can be configured through a communication interface; and PWM on-value and PWM output 100% duty cycle value.
Furthermore, the wind and light complementary controller is connected to the Internet of things through a communication interface based on photoelectric isolation, and the Internet of things is connected with the cloud server.
The invention also provides a wind-solar hybrid control system.
The wind-solar hybrid control system comprises the wind-solar hybrid controller.
The third purpose of the invention is to provide a control method of the wind-solar hybrid control system.
The control method of the wind-solar hybrid control system comprises the following steps:
collecting a voltage signal of a storage battery and judging the charging state of the storage battery;
collecting voltage/current signals of the wind driven generator, and comparing the voltage/current signals with preset voltage/current;
collecting a voltage/current signal of the solar panel, and comparing the voltage/current signal with a preset voltage/current;
collecting a rotating speed signal of the wind driven generator, and comparing the rotating speed signal with a preset rotating speed;
collecting a current wind speed signal and comparing the current wind speed signal with a preset wind speed;
when the judgment and comparison result meets any PWM starting condition, starting a PWM controller; the PWM starting conditions include:
a1. the charging state of the storage battery is floating charging, and the voltage of the storage battery reaches the floating charging voltage;
b1. the voltage/current of the wind driven generator reaches the set voltage/set current;
c1. the voltage/current of the solar panel reaches the set voltage/set current;
d1. the rotating speed of the wind driven generator reaches the set rotating speed of the wind driven generator;
e1. the current wind speed reaches the set wind speed.
Further, the method further comprises:
when any one of the switching element starting conditions is met, starting the switching element controller; the switching element activation condition includes:
a2. fully charging the storage battery;
b2. the voltage/current of the wind driven generator reaches a preset maximum voltage/a preset maximum current;
c2. the rotating speed of the wind driven generator reaches the preset maximum rotating speed of the wind driven generator;
d2. the current wind speed is greater than or equal to the preset maximum wind speed of the wind driven generator.
Further, the method further comprises:
collecting a solar panel voltage/current signal, and correspondingly comparing the solar panel voltage/current signal with a preset solar panel maximum voltage/maximum current;
when the current/voltage signal of the solar panel reaches the preset maximum voltage/maximum current, the solar panel switch controller is started to switch off the solar panel.
Compared with the prior art, the invention has the beneficial effects that:
(1) the wind-solar hybrid controller can control the wind driven generator and the solar panel by comparing and judging the charging state of the storage battery, the voltage/current signal of the solar panel, the voltage/current signal of the wind driven generator, the rotating speed of the wind driven generator and the current wind speed under the condition that the working states of the wind driven generator and the solar panel are influenced by the external environment, and finally, the whole system can be ensured to stably operate under any condition.
(2) The wind-solar hybrid controller controls the switch element to act through the switch element control part, so that the wind driven generator enters a braking (braking) state, and the running safety of the wind driven generator is ensured.
(3) The wind-solar hybrid controller further comprises a reserved function upgrading interface, wherein the reserved function upgrading interface is configured to: and updating the function of the wind-solar hybrid controller by upgrading the firmware of the device.
(4) The wind-solar hybrid controller can adjust the working parameters of the controller through the communication interface based on photoelectric isolation, thereby solving the problem of universality of different application scenes and different external access devices.
(5) The wind-solar hybrid controller is connected to the Internet of things through a communication interface based on photoelectric isolation, and the Internet of things is connected with the cloud server, so that real-time data transmission and cloud storage are realized.
(6) The wind-solar hybrid controller stores the generated energy in real time based on the generated energy storage function of the high-precision RTC clock, and reads the generated energy of the equipment through the communication interface based on photoelectric isolation, so that the total generated energy of each equipment can be visually displayed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic structural diagram of an embodiment of a wind-solar hybrid controller according to the present invention.
FIG. 2 is a schematic structural diagram of a wind-solar hybrid controller according to a second embodiment of the present invention.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Wind-solar hybrid controller
Example one
FIG. 1 is a schematic structural diagram of an embodiment of a wind-solar hybrid controller according to the present invention.
In the embodiment, the wind-solar hybrid controller is connected with the PWM controller.
As shown in fig. 1, the wind-solar hybrid controller of the present embodiment includes:
(1) a battery state of charge determination section configured to receive the battery voltage signal and determine a state of charge of the battery.
The charging state of the storage battery comprises floating charging and full charging.
In order to balance the capacity loss due to cell self-discharge, a continuous, long-term constant-voltage charge of the battery is required. This charging mode is referred to as float charging, also called float charging.
Float voltages are already specified in battery specifications.
When the battery voltage reaches a preset overcharge voltage value, it indicates that the battery is fully charged.
After the full charge state is reached, the charging is continued, which may cause the internal pressure of the battery to increase, the battery to deform, and the like, and the performance of the battery may be significantly degraded and damaged.
(2) And the wind power generator voltage/current comparison part is configured to receive the wind power generator voltage/current signal and compare the wind power generator voltage/current signal with a preset voltage/current.
(3) And the wind driven generator rotating speed comparison part is configured to receive the wind driven generator rotating speed signal and compare the wind driven generator rotating speed signal with a preset rotating speed.
(4) A wind speed comparing part configured to receive the current wind speed signal and compare with a preset wind speed.
The wind-solar hybrid controller also comprises a signal acquisition part. The signal acquisition part comprises a wind driven generator voltage signal sensor, a wind driven generator current signal sensor, a wind driven generator speed sensor, an anemoscope, a solar panel voltage signal sensor and a solar panel current signal sensor.
The wind driven generator voltage signal sensor and the wind driven generator current signal sensor are respectively used for acquiring voltage and current signals of the wind driven generator and transmitting the voltage and current signals to the wind driven generator voltage/current comparison part.
The wind driven generator speed sensor is used for collecting the wind driven generator speed and transmitting the wind driven generator speed to the wind driven generator speed comparison part.
Anemometers are used to determine wind conditions.
The solar panel voltage signal sensor and the solar panel current signal sensor are respectively used for acquiring a solar panel voltage signal and a solar panel current signal and transmitting the solar panel voltage signal and the solar panel current signal to the solar voltage/current comparison part.
(5) A PWM starting part configured to receive output results of the storage battery charging state judging part, the wind power generator voltage/current comparing part, the wind power generator rotating speed comparing part and the wind speed comparing part and send a starting signal to the PWM controller when any one PWM starting condition is satisfied; the PWM starting conditions include:
a1. the charging state of the storage battery is floating charging, and the voltage of the storage battery reaches the floating charging voltage;
b1. the voltage/current of the wind driven generator reaches the set voltage/set current;
c1. the voltage/current of the solar panel reaches the set voltage/set current;
d1. the rotating speed of the wind driven generator reaches the set rotating speed of the wind driven generator;
e1. the current wind speed reaches the set wind speed.
Among them, in order to balance the capacity loss due to the self-discharge of the battery, it is necessary to perform a constant voltage charge continuously for a long time on the secondary battery. This charging mode is referred to as float charging, also called float charging.
Float voltages are already specified in battery specifications.
The wind-solar hybrid controller of the embodiment can control the wind driven generator and the solar panel by comparing and judging the charging state of the storage battery, the voltage/current signal of the solar panel, the voltage/current signal of the wind driven generator, the rotating speed of the wind driven generator and the current wind speed under the condition that the working states of the wind driven generator and the solar panel are influenced by the external environment, and finally, the whole system can be ensured to run stably under any condition.
Example two
FIG. 2 is a schematic structural diagram of a wind-solar hybrid controller according to a second embodiment of the present invention.
In this embodiment, on the basis of the first embodiment, the wind-solar hybrid controller is further connected with the switching element controller.
As shown in fig. 2, the wind-solar hybrid controller of this embodiment further includes:
a switching element control section configured to receive output results of the storage battery charge state determination section, the wind power generator voltage/current comparison section, the wind power generator rotational speed comparison section, and the wind speed comparison section, and to send a start signal to the switching element controller when any one of the switching element start conditions is satisfied; the switching element activation condition includes:
a2. fully charging the storage battery;
b2. the voltage/current of the wind driven generator reaches a preset maximum voltage/a preset maximum current;
c2. the rotating speed of the wind driven generator reaches the preset maximum rotating speed of the wind driven generator;
d2. the current wind speed is greater than or equal to the preset maximum wind speed of the wind driven generator.
The switching element includes, but is not limited to, a relay, an ac contactor, and a thyristor, and may be other existing switching elements.
In the embodiment, the switch element is controlled to act through the switch element control part, so that the wind driven generator enters a braking (braking) state, and the running safety of the wind driven generator is ensured.
In another embodiment, the wind-solar hybrid controller is further connected with a solar panel switch controller; the wind-solar hybrid controller further comprises:
and a solar panel control part configured to receive the solar panel voltage/current signal, compare the solar panel voltage/current signal with a preset maximum solar panel voltage/maximum current, and output a signal for disconnecting the solar panel to the solar panel switch controller when the solar panel current/voltage signal reaches the maximum voltage/maximum current.
When the solar panel reaches the preset highest voltage or the maximum current, the solar panel is disconnected, so that the stable operation of the solar panel is ensured.
In another embodiment, the wind-solar hybrid controller further comprises a reserved multi-way switch control interface, wherein the reserved multi-way switch control interface is configured to design the switch element control part according to different requirements of users, and the switch element control part outputs the main contact point signal to other equipment.
In another embodiment, the wind-solar hybrid controller further comprises a reserved function upgrade interface configured to: and updating the function of the wind-solar hybrid controller by upgrading the firmware of the device.
Therefore, the problem that a user cannot set and adjust the working parameters of the conventional wind-solar hybrid controller after leaving a factory is solved.
In another embodiment, the wind-solar hybrid controller further comprises an optoelectronic isolation based communication interface configured to: and modifying the working parameters of the wind-solar hybrid controller, and reading the working state of the controller.
The wind-solar hybrid controller can adjust the working parameters of the controller through the communication interface based on photoelectric isolation, thereby solving the problem of universality of different application scenes and different external access devices.
The communication interface based on photoelectric isolation adopts an international modbus communication protocol, and is convenient to integrate.
In addition, the external signal input interface based on photoelectric isolation can also read in monitoring signals, so that the interference of external signals to the system operation can be reduced.
The wind-solar hybrid controller also has a power generation storage function based on a high-precision RTC clock, the power generation is stored in real time, and the power generation of the equipment can be read through a communication interface based on photoelectric isolation, so that the total power generation amount of each equipment can be visually displayed.
The wind-solar hybrid controller is based on ADC sampling of multiple sampling filtering, so that the sampling precision is improved.
The communication interface based on the photoelectric isolation can also be configured to use the number of switching elements (such as relays), connection and disconnection voltages; each sampling range can be configured through a communication interface; and PWM on-value and PWM output 100% duty cycle value.
In another embodiment, the wind-solar hybrid controller is connected to the internet of things through a communication interface based on photoelectric isolation, and the internet of things is connected with a cloud server.
Wind-solar hybrid control system
The invention also provides a wind-solar hybrid control system.
The invention provides a wind-solar hybrid control system which comprises the wind-solar hybrid controller of any one of the embodiments.
In the invention, the wind-solar hybrid control system comprises a signal acquisition unit besides a wind-solar hybrid controller, wherein the signal acquisition unit comprises a storage battery voltage signal sensor, a wind driven generator current signal sensor, a wind driven generator rotating speed sensor, an anemoscope, a solar panel voltage signal sensor and a solar panel current sensor.
Control method of wind-solar hybrid control system
The invention also provides a control method of the wind-solar hybrid control system.
The control method of the wind-solar hybrid control system comprises the following steps:
collecting a voltage signal of a storage battery and judging the charging state of the storage battery;
collecting voltage/current signals of the wind driven generator, and comparing the voltage/current signals with preset voltage/current;
collecting a voltage/current signal of the solar panel, and comparing the voltage/current signal with a preset voltage/current;
collecting a rotating speed signal of the wind driven generator, and comparing the rotating speed signal with a preset rotating speed;
collecting a current wind speed signal and comparing the current wind speed signal with a preset wind speed;
when the judgment and comparison result meets any PWM starting condition, starting a PWM controller; in the same controller, at least one PWM starting condition is adopted, and other conditions which are not used can be set to be closed.
The PWM starting conditions include:
a1. the charging state of the storage battery is floating charging, and the voltage of the storage battery reaches the floating charging voltage;
b1. the voltage/current of the wind driven generator reaches the set voltage/set current;
c1. the voltage/current of the solar panel reaches the set voltage/set current;
d1. the rotating speed of the wind driven generator reaches the set rotating speed of the wind driven generator;
e1. the current wind speed reaches the set wind speed.
In another embodiment, the method further comprises:
when any one of the switching element starting conditions is met, starting the switching element controller; the switching element activation condition includes:
a2. fully charging the storage battery;
b2. the voltage/current of the wind driven generator reaches a preset maximum voltage/a preset maximum current;
c2. the rotating speed of the wind driven generator reaches the preset maximum rotating speed of the wind driven generator;
d2. the current wind speed is greater than or equal to the preset wind speed.
In another embodiment, the method further comprises:
collecting a solar panel voltage/current signal, and correspondingly comparing the solar panel voltage/current signal with a preset solar panel maximum voltage/maximum current;
when the solar panel current/voltage signal reaches the set maximum voltage/maximum current, the solar panel switch controller is activated to disconnect the solar panel.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A wind-solar hybrid controller, which is connected with a PWM controller, is characterized in that the wind-solar hybrid controller comprises:
a battery state-of-charge determination section configured to receive the battery voltage signal and determine a state of charge of the battery; and
a wind power generator voltage/current comparison part configured to receive a wind power generator voltage/current signal and compare the wind power generator voltage/current signal with a preset voltage/current; and
a wind power generator rotating speed comparing part which is configured to receive a wind power generator rotating speed signal and compare the wind power generator rotating speed signal with a preset rotating speed; and
a wind speed comparison part configured to receive a current wind speed signal and compare with a preset wind speed; and
a PWM starting part configured to receive output results of the storage battery charging state judging part, the wind power generator voltage/current comparing part, the wind power generator rotating speed comparing part and the wind speed comparing part and send a starting signal to the PWM controller when any one PWM starting condition is satisfied; the PWM starting conditions include:
a1. the charging state of the storage battery is floating charging, and the voltage of the storage battery reaches the floating charging voltage;
b1. the voltage/current of the wind driven generator reaches the set voltage/set current;
c1. the voltage/current of the solar panel reaches the set voltage/set current;
d1. the rotating speed of the wind driven generator reaches the set rotating speed of the wind driven generator;
e1. the current wind speed reaches the set wind speed.
2. The wind-solar hybrid controller according to claim 1, wherein the wind-solar hybrid controller is further connected to a switching element controller, the wind-solar hybrid controller further comprising:
a switching element control section configured to receive output results of the storage battery charge state determination section, the wind power generator voltage/current comparison section, the wind power generator rotational speed comparison section, and the wind speed comparison section, and to send a start signal to the switching element controller when any one of the switching element start conditions is satisfied; the switching element activation condition includes:
a2. fully charging the storage battery;
b2. the voltage/current of the wind driven generator reaches a preset maximum voltage/a preset maximum current;
c2. the rotating speed of the wind driven generator reaches the preset maximum rotating speed of the wind driven generator;
d2. the current wind speed is greater than or equal to the preset maximum wind speed of the wind driven generator.
3. The wind-solar hybrid controller of claim 1, wherein the wind-solar hybrid controller is further connected with a solar panel switch controller; the wind-solar hybrid controller further comprises:
and a solar panel control part configured to receive the solar panel voltage/current signal, compare the solar panel voltage/current signal with a preset solar panel maximum voltage/maximum current, and output a signal for disconnecting the solar panel to the solar panel switch controller when the solar panel current/voltage signal reaches the maximum voltage/maximum current.
4. The wind-solar hybrid controller according to claim 1, further comprising a reserved multi-way switch control interface configured to design the switch element control part according to different needs of users, and output the dry contact signal to other devices through the switch element.
5. The wind-solar hybrid controller of claim 1, further comprising a reserved function upgrade interface configured to: and updating the function of the wind-solar hybrid controller by upgrading the firmware of the device.
6. The wind-solar hybrid controller of claim 1, further comprising an opto-electrical isolation based communication interface configured to: modifying the working parameters of the wind-solar hybrid controller, and reading the working state of the controller;
or/and the wind-solar hybrid controller is accessed to the Internet of things through a communication interface based on photoelectric isolation, and the Internet of things is connected with the cloud server.
7. A wind-solar hybrid control system, characterized by comprising a wind-solar hybrid controller according to any one of claims 1 to 6.
8. A control method of the wind-solar hybrid control system according to claim 7, comprising:
collecting a voltage signal of a storage battery and judging the charging state of the storage battery;
collecting voltage/current signals of the wind driven generator, and comparing the voltage/current signals with preset voltage/current;
collecting a voltage/current signal of the solar panel, and comparing the voltage/current signal with a preset voltage/current;
collecting a rotating speed signal of the wind driven generator, and comparing the rotating speed signal with a preset rotating speed;
collecting a current wind speed signal and comparing the current wind speed signal with a preset wind speed;
when the judgment and comparison result meets any PWM starting condition, starting a PWM controller; the PWM starting conditions include:
a1. the charging state of the storage battery is floating charging, and the voltage of the storage battery reaches the floating charging voltage;
b1. the voltage/current of the wind driven generator reaches the set voltage/set current;
c1. the voltage/current of the solar panel reaches the set voltage/set current;
d1. the rotating speed of the wind driven generator reaches the set rotating speed of the wind driven generator;
e1. the current wind speed reaches the set wind speed.
9. The control method of the hybrid wind-solar control system according to claim 8, further comprising:
when any one of the switching element starting conditions is met, starting the switching element controller; the switching element activation condition includes:
a2. fully charging the storage battery;
b2. the voltage/current of the wind driven generator reaches a preset maximum voltage/a preset maximum current;
c2. the rotating speed of the wind driven generator reaches the preset maximum rotating speed of the wind driven generator;
d2. the current wind speed is greater than or equal to the preset maximum wind speed of the wind driven generator.
10. The control method of the hybrid wind-solar control system according to claim 8, further comprising:
collecting a solar panel voltage/current signal, and correspondingly comparing the solar panel voltage/current signal with a preset maximum voltage/maximum current of the solar panel;
when the solar panel current/voltage signal reaches the maximum voltage/maximum current, the solar panel switch controller is activated to disconnect the solar panel.
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| CN110620420B (en) | 2022-07-29 |
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