KR20230062327A - Hybrid power generation-based lighting system and method for operating the same - Google Patents

Abstract

The present invention relates to a lighting system based on hybrid power generation having a solar power generation unit having a solar panel for converting solar energy into electrical energy to output the same, and a wind power generation unit for converting wind energy into electrical energy to output the same. To this end, the lighting system based on hybrid power generation, comprises: a first detection unit for detecting a solar power generation status of a solar power generation unit; a second detection unit for detecting a wind power generation status of a wind power generation unit; a switching unit operated by receiving an external selective switching signal to connect any one of the solar and wind power generation units with a battery so as to charge power to the battery; a control unit for generating the selective switching signal to select any one of the wind and solar power generation units on the basis of the detected wind and solar power generation statuses; and a lighting unit driven by using battery-charged power. Therefore, power can be supplied stably to the lighting unit.

Description

Hybrid power generation-based lighting system and method for operating the same

The present invention relates to a hybrid power generation based lighting system.

Solar power generation and wind power generation are being used as renewable energy generation systems.

Photovoltaic generators are widely used as they are composed of a solar cell module composed of solar cell cells, a storage battery, and a power conversion device. If you hold it up and leave it unattended, there is a problem in that electricity production efficiency is lowered and durability is lowered.

On the other hand, the wind power generator supplies induction electricity generated by converting wind power into rotational force to the power system. Rotating blades that produce rotational force from wind, a rotating shaft attached to the rotating blades, a rotor included in the rotating shaft, and a rotor It has a gearbox for increasing speed and a control device for selecting start-up and braking, a generator and a power stabilization device, and also, the rotary blade controls the output by allowing the angle of inclination to be adjusted.

However, these wind power generators also have a problem in that power generation efficiency varies depending on the direction of the wind.

For this reason, recently, interest in a hybrid power supply device to compensate for the disadvantages of each power generation method has been increasing, and various types of technologies are being developed according to this interest.

Korean Patent Publication No. 10-2020-0129829 (published on November 18, 2020.)

The present invention provides a hybrid power generation-based lighting system capable of charging through hybrid self-generation using solar and wind power and stably supplying power to a lighting unit using the charged power and an operating method thereof.

The problems to be solved by the present invention are not limited to those mentioned above, and other problems to be solved that are not mentioned can be clearly understood by those skilled in the art from the description below. will be.

In order to solve the above-described problem to be solved, a hybrid power generation-based lighting system according to an embodiment of the present invention converts solar energy into electrical energy and outputs the photovoltaic power generation unit having a solar panel and wind energy to electricity. A lighting system based on hybrid power generation having a wind power generation unit that converts into energy and outputs it, comprising: a first sensing unit that senses a solar power generation state of the photovoltaic power generation unit; and a second sensing unit that detects a wind power generation state of the wind power generation unit. A sensing unit and a switching unit that receives an external selection switching signal and connects one of the photovoltaic power generation unit and the wind power generation unit to a battery to charge the battery with power, the detected wind power generation state, and It may include a control unit generating the selection switching signal for selecting one of the wind power generation unit and the solar power generation unit based on a solar power generation state, and a lighting unit driven using the battery-charged power.

According to an embodiment of the present invention, the control unit is interlocked with a memory in which information on generation priority for each time period is set, generates the selection switching signal based on the generation priority for each time period stored in the memory, and applies it to the switching unit can do.

According to an embodiment of the present invention, the battery is charged by receiving power from a power generation unit connected to the switching unit through a battery management system for monitoring charge/discharge state information of the battery, and the control unit is charged through the battery management system. It collects charge/discharge status information on the battery, transmits the collected charge/discharge status information to a management server connected by wire or wirelessly, receives information on generation priority by time period, and updates the memory based on this. can

In order to solve the above-described problem to be solved, a method of operating a hybrid power generation-based lighting system according to an embodiment of the present invention is a solar power generation unit having a solar panel for converting solar energy into electrical energy and outputting it, and wind power A method of operating a lighting system based on hybrid power generation having a wind power generation unit that converts energy into electrical energy and outputs it, wherein a battery is charged by being connected to one of the photovoltaic power generation unit and the wind power generation unit, and the battery Driving a lighting unit using the charged power, obtaining a detected value corresponding to a solar power generation state and a wind power generation state for the photovoltaic power generation unit and the wind power generation unit, and charging the battery by connecting the other power generation unit and the battery when the detected value corresponding to the negative power generation state is smaller than the detected value corresponding to the power generation state of the other power generation unit within a preset error range. can do.

According to the above-described problem solving means of the present invention, it is possible to charge through hybrid self-generation using sunlight and wind power, and stably supply power to the lighting unit using the charged power.

1 is a diagram showing the entire configuration of a lighting system based on hybrid power generation according to an embodiment of the present invention.
2 is a diagram for explaining a state in which a lighting system based on hybrid power generation according to an embodiment of the present invention is implemented.
3 is a view showing the structure of a lighting unit according to an embodiment of the present invention.
4 is a diagram for explaining the configuration of a power generation unit in a lighting system based on hybrid power generation according to an embodiment of the present invention.
5 is a flowchart illustrating an operation process of a lighting system based on hybrid power generation according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The detailed descriptions that follow are provided to provide a comprehensive understanding of the methods, devices and/or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, the definition should be made based on the contents throughout this specification. Terminology used in the detailed description is only for describing the embodiments of the present invention and should in no way be limiting. Unless expressly used otherwise, singular forms of expression include plural forms. In this description, expressions such as "comprising" or "comprising" are intended to indicate any characteristic, number, step, operation, element, portion or combination thereof, one or more other than those described. It should not be construed to exclude the existence or possibility of any other feature, number, step, operation, element, part or combination thereof.

Hereinafter, a hybrid power generation-based lighting system and its operating method will be described with reference to the accompanying drawings.

1 is a diagram showing the overall configuration of a hybrid power generation-based lighting system according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining a state in which the hybrid power generation-based lighting system according to an embodiment of the present invention is implemented. 3 is a view showing the structure of a lighting unit according to an embodiment of the present invention, and FIG. 4 is a diagram for explaining the configuration of a power generation unit in a hybrid power generation-based lighting system according to an embodiment of the present invention.

As shown in FIG. 1, the hybrid power generation-based lighting system may include a solar power generation unit 100, a wind power generation unit 120, a battery 140, a control unit 160, and a lighting unit 170. .

In particular, the hybrid power generation-based lighting system according to an embodiment of the present invention, as shown in FIG. 2, is installed on one side of the support 10 on which zinc molten plating and powder coating are implemented to convert solar energy into electrical energy. The photovoltaic panel 12 that outputs the photovoltaic panel 12, the wind generator 14 and the photovoltaic panel ( 12) may be configured with a lighting unit 170 installed on the lower side support 10 and operating by receiving power from the battery 160. At this time, the wind power generator 14 may generate power through rotation of the rotating body 16 .

The lighting unit 170 applied to the embodiment of the present invention is a surface-mounted LED device, and the surface-mounted LED device may mean a surface-mounted LED device in which an LED bare chip is packaged. Specifically, the surface-mounted LED device according to the embodiment of the present invention may include a CSP type device and a flip chip (device).

In particular, as shown in FIG. 3 , the lighting unit 170 according to an embodiment of the present invention is mounted on a plurality of surface mounts based on a ceramic printed circuit board 184 on which a plurality of conductive patterns 182 are formed. It may have a form in which the type LED element 186 is mounted. Mounting patterns (not shown) including conductive wires are connected to each of the plurality of conductive patterns 182, and power can be supplied to each of the plurality of surface-mounted LED elements 186.

In addition, each of the surface-mounted LED elements 186 may be individually sealed with a sealing material or may be sealed in a plurality thereof.

In addition, the conductive pattern 182 may be formed by fusing conductive silver to the ceramic printed circuit board 184 .

In addition, the ceramic printed circuit board 184 may be combined with the aluminum heat sink 188 .

As described above, by configuring the lighting unit 170 using the ceramic printed circuit board 184, it is possible to construct a lighting system having excellent withstand voltage characteristics, excellent thermal conductivity, heat resistance, and moisture resistance, chemical resistance, and weather resistance. possible.

In addition, by implementing the lighting unit 170 as a surface-mounted LED device and using a CSP device as the surface-mounted LED device, power consumption can be minimized.

The photovoltaic power generation unit 100 converts the output voltage of DC power generated from the solar cell constituting the solar panel 12 that converts solar energy into electrical energy and outputs the output voltage to a set voltage (hereinafter referred to as 'set voltage') It may be provided with a first converter 104 that converts to and outputs.

In addition, the lighting system according to the embodiment of the present invention may further include a first sensor 150 that is connected to the photovoltaic generator 100 and can detect a photovoltaic power generation state.

The first sensing unit 150 is installed at the output terminal of the solar cell to recognize DC power, which is electrical energy output from the solar cell, and detects the voltage and current of the DC power output from the positive battery, and then transmits it to the control unit 160. can provide

In addition, the first sensor 150 is a sensor for detecting the amount of light, and may calculate information about the solar power generation state through the detection of the amount of light.

The wind power generation unit 120 converts the power supplied from the wind power generator 14 that converts wind energy into electrical energy and outputs the direct current through the AC/DC rectifier 124 and the AC/DC rectifier 124 that converts the power into DC power. A second converter 126 converting the output voltage of power into a set voltage may be included.

In addition, the lighting system according to the embodiment of the present invention is connected to the wind power generation unit 120 may be further provided with a second sensor 152 capable of detecting the state of wind power generation. Specifically, the second detector 152 is installed at the output end of the AC/DC rectifier 124 to recognize wind power, which is electrical energy output from the wind power generator 14, and is rectified in the AC/DC rectifier 124. After detecting the voltage and/or current of the output DC power, it may be provided to the control unit 160 .

In addition, the second sensing unit 152 may detect a wind power generation state of the wind power generator 14 by detecting a rotational speed of the wind power generator 14 with respect to the rotating body 16 .

In addition, the second sensing unit 152 may detect a wind power generation state by photographing the rotating body 16 of the wind power generator 14 or sensing wind strength. That is, the second sensing unit 152 calculates the rotational speed of the rotating body 16 through analysis of photographic data continuously photographed of the rotating body 16 or senses the strength of the wind to detect the state of wind power generation. may be

The first and second converters 104 and 126 may convert an input output voltage into a set voltage through Maximum Power Point Tracking (MPPT).

The lighting system according to the embodiment of the present invention is connected to the output terminals of the photovoltaic power generation unit 100 and the wind power generation unit 120, and performs a switching operation according to the selection switching signal applied from the control unit 160 to the photovoltaic power generation unit ( 100) and the wind power generation unit 120 may further include a switching unit 130 connecting any one to the battery 140.

The switching unit 130 is for performing a switching operation based on a selection switching signal applied from the control unit 160, and various electronic switches such as a relay, a transistor (TR), and a metal oxide semiconductor field effect transistor (MOSFET) are examples. can be heard

Power charged in the battery 140 may be applied to the lighting unit 170 as a load through the constant current driver 145 .

The control unit 160 generates a selection switching signal for selecting one of the solar power generation unit 100 and the wind power generation unit 120 based on the solar power generation state and the wind power generation state, and applies the signal to the switching unit 130 can do.

Specifically, the control unit 160 controls the solar power detection value for the voltage and/or current for the DC power detected through the solar power generation unit 100 and the DC power detected through the wind power generation unit 120. A selection switching signal for selecting one of the photovoltaic power generation unit 100 and the wind power generation unit 120 is generated and applied to the switching unit 130 through comparison between wind power generation detection values for voltage and/or current. can For example, the control unit 160 generates a selection switching signal for connecting the solar power generation unit 100 and the battery 140 when the solar power generation detection value is greater than the wind power generation detection value, and the solar power generation detection value If it is smaller than the wind power generation detection value, a selection switching signal for connecting the wind power generator 120 and the battery 140 may be generated.

In particular, the controller 160 according to an embodiment of the present invention assigns one of the photovoltaic power generation unit 100 and the wind power generation unit 120 to the battery 140 based on the generation priority for each time period stored in the memory 162. After generating a selection switching signal for connection, it is determined that the solar power generation detection value is smaller than the wind power generation detection value in a state in which the selected one power generation unit, for example, the photovoltaic power generation unit 100 and the battery 140 are connected When the wind power generator 120 and the battery 140 are connected directly without generating a selection switching signal, n (n is a natural number of 5 or more) photovoltaic power generation detection values and wind power generation detection values received for a predetermined time A selection switching signal for changing the power generation unit connected to the battery 140 may be generated through comparison of calculated values through calculation of values.

On the other hand, the wind power generation detection value according to an embodiment of the present invention is generated through detection of current and / or voltage for DC power of the wind power generator 120 or calculated through detection of the rotational speed of the rotating body 16, or It can be calculated through sensing the strength of the wind.

In addition, the photovoltaic power generation detection value may be generated by sensing the current and/or voltage of the DC power of the photovoltaic power generation unit 100 or calculated by sensing the amount of light.

Time-specific power generation priority is data generated based on seasonal characteristics and past weather forecast information of the location where the lighting system is installed, for selecting one of the photovoltaic power generation unit 100 and the wind power generation unit 120 for each time period. may be information.

Meanwhile, the hybrid power generation-based lighting system according to an embodiment of the present invention may further include a communication unit 180 for wired or wireless communication with an external management server 200 .

The control unit 160 may be connected to the management server 200 through the communication unit 180 to transmit/receive information, and transmit/receive information to the management server 200 through the communication unit 180 during a preset time zone, for example, between 9 and 10 am. It can transmit information by being connected and receive information from the management server 200 . That is, the control unit 160 checks the state of the battery 140 for each time period, for example, the state of charging and discharging, and then stores the information (hereinafter referred to as 'charging and discharging state information') in the memory 162 and Upon reaching a preset time zone, charge/discharge state information is transmitted to the management server 200 connected through the communication unit 180, and after receiving information on the generation priority for each time zone from the management server 200, the memory based on this information is received. (162) can be updated.

To this end, the lighting system according to an embodiment of the present invention is connected to a battery-side terminal (not shown) of the battery 140, and DC output from any one of the photovoltaic power generation unit 100 and the wind power generation unit 120. Charging the battery 140 by receiving power or using the power charged in the battery 140 to supply necessary power to the lighting unit 170, which is a load, and monitoring the charge/discharge state of the battery 140 A battery management system (BMS) 142 may be further provided. In this case, the controller 160 may be connected to the BMS 142 to collect monitoring information about the battery 140, that is, charge/discharge state information.

Hereinafter, a process of operating the hybrid power generation-based lighting system as described above will be described with reference to FIG. 5 .

5 is a flowchart illustrating an operation process of a lighting system based on hybrid power generation according to an embodiment of the present invention.

As shown in FIG. 5 , the control unit 160 generates one of the photovoltaic power generation unit 100 and the wind power generation unit 120, for example, solar power generation, based on the generation priority information for each time period stored in the memory 162. The unit 100 is connected to the battery 140 to charge the battery 140 using DC power generated through the solar power generation unit 100 (S400).

Thereafter, the control unit 160 obtains the solar power generation detection value and the wind power generation detection value detected through the first and second detection units 150 and 152 (S402). It is determined whether the obtained solar power generation detection value is smaller than the wind power generation detection value within a preset error range (S404).

As a result of the determination in step S404, if the solar power generation detection value is smaller than the wind power generation detection value, the control unit 160 detects the solar power generation detection value and the wind power generation detection value for a predetermined time through the first and second detection units 150 and 152. Values are collected (S406).

Thereafter, the control unit 160 generates a first comparison value through an operation on the collected solar power generation detection values, for example, calculating an average value, and generates a second comparison value through an operation on the collected wind power generation detection values, for example, through an average value calculation. is generated (S408).

Then, the controller 160 determines whether the first comparison value is smaller than the second comparison value within a predetermined threshold range (S410).

As a result of the determination in S410, if the first comparison value is smaller than the second comparison value, the control unit 160 changes the power generation unit connected to the battery 140, that is, changes from the photovoltaic power generation unit 100 to the wind power generation unit 120. After generating a selection switching signal for this by applying it to the switching unit 130, it connects the wind power generation unit 120 to the battery 140 (S412).

If the solar power generation detection value is greater than the wind power generation detection value as a result of the determination in S404 or if the first comparison value is greater than the second comparison value as a result of determination in S410, the control unit 160 proceeds to S400, that is, the solar power generation unit 100 ) and the battery 140, the subsequent steps may be performed.

Meanwhile, although not shown, the controller 160 may collect charge/discharge state information of the battery 140 through the BMS 142 for each time period and transmit the collected charge/discharge state information to the management server 200. Instead, the memory 162 may be updated based on the information on the development priority for each time period received from the management server 200 .

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments expressed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas that are equivalent or within the scope of equivalents should be construed as being included in the scope of the present invention.

100: solar power generation unit
120: wind power generation unit
140: battery
160: control unit
170: lighting unit
180: Ministry of Communication
200: management server

Claims (4)

In a hybrid power generation-based lighting system having a solar power generation unit having a solar panel that converts solar energy into electrical energy and outputting it, and a wind power generation unit that converts wind energy into electrical energy and outputs it,
A first sensing unit for sensing a photovoltaic power generation state of the photovoltaic power generation unit;
A second sensor for sensing a wind power generation state of the wind power generator;
A switching unit operating by receiving an external selection switching signal to connect one of the photovoltaic power generation unit and the wind power generation unit to a battery to charge the battery with power;
A control unit generating the selection switching signal for selecting one of the wind power generation unit and the solar power generation unit based on the detected wind power generation state and solar power generation state;
A hybrid power generation-based lighting system including a lighting unit driven by using the battery-charged power.
According to claim 1,
The control unit is interlocked with a memory in which information on generation priority for each time period is set, and generates the selection switching signal based on the generation priority for each time period stored in the memory and applies it to the switching unit. Hybrid power generation-based lighting system.
According to claim 2,
The battery is charged by receiving power from a power generation unit connected to the switching unit through a battery management system for monitoring charge/discharge state information of the battery,
The control unit collects charge/discharge state information for the battery through a battery management system, transmits the collected charge/discharge state information to a management server connected by wire or wirelessly, and receives information on generation priority for each time period. A hybrid power generation-based lighting system that updates the memory based thereon.
In the operating method of a hybrid power generation-based lighting system having a solar power generation unit having a solar panel that converts solar energy into electrical energy and outputting it, and a wind power generation unit that converts wind energy into electrical energy and outputs it,
Connecting to any one of the photovoltaic power generation unit and the wind power generation unit to charge a battery, and driving a lighting unit using the power charged in the battery;
Obtaining a detected value corresponding to a solar power generation state and a wind power generation state for the photovoltaic power generation unit and the wind power generation unit;
When the detected value corresponding to the power generation state of one of the connected power generation units is smaller than the detected value corresponding to the power generation state of the other power generation unit within a preset error range, the other power generation unit and the battery are connected to the battery. Method of operating a hybrid power generation-based lighting system comprising the step of charging.

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