KR20200080167A - Hybrid renewable energy generation systems that enhance ESS safety - Google Patents

Abstract

The present invention relates to a hybrid renewable energy generation system with enhanced safety of an energy storage system (ESS). According to the present invention, the hybrid renewable energy generation system with enhanced safety of an ESS comprises: a power conversion system (PCS) for supplying generated power to a system power source; an ESS; renewable energy generation equipment for generating electrical power from a renewable energy source; and a hybrid unit. According to the present invention, the operating efficiency of renewable energy generation equipment can be increased.

Description

Hybrid renewable energy generation systems that enhance ESS safety

The present invention relates to a hybrid renewable energy power generation system that interlocks renewable energy generation facilities and EES to produce power by interlocking complementary fusion while securing safety of the ESS from renewable energy generation power generating shock voltage.

ESS (Energy Storage System) that charges the peak power remaining in the middle of the night and releases it when needed to produce electricity, saves electricity at a low rate, and then produces and resells electricity during the day at an expensive rate with high electricity demand. It is useful in that it can be used. However, this corresponds to a buffer function that divides and utilizes the grid power in a timely manner, that is, it discharges as much as the grid power is charged, and cannot be seen as a new resource in terms of energy. Moreover, power loss due to charging and discharging is technically accompanied by a decrease in efficiency.

Among renewable energy generation technologies, solar power, wind power, etc. are power generation technologies that transmit power for self-generation or extra power to the grid. In particular, it is in line with future power generation technologies that include fossil fuels and contributes to carbon reduction and meets future distributed generation policies aimed at self-generation.

On the other hand, these renewable energy generation facilities can also charge the ESS, so the ESS is applied to the renewable energy generation facilities as an efficient facility that stores and utilizes peak power, such as using the remaining production power as load power and charging the ESS. have. However, when the renewable energy generation facility charges the ESS, an impulsive pulse current is supplied, so it is necessary to precisely enhance the safety of the advanced ESS charging.

In particular, high-tech ESSs such as lithium batteries and lithium-ion batteries have special characteristics that can cause explosion or fire, so when applying advanced ESS to power generation facilities such as solar or wind power, precise charging and discharging design is required. In the Chosun Ilbo on December 18, 2018, a report that "of 16 fires in solar power plants and 3 fires in wind power plants out of 16 ESS fires in 2018," renewable energy generation facilities charged ESS This is an example that reminds us that safety considerations are very important.

1A to 2D are graphs for explaining the cause for this, and the risk factors when charging the ESS with the renewable energy generation facility will be described in detail below.

Figure 1a shows a phenomenon in which the voltage or current changes in accordance with the climate in a renewable energy generation facility as a fluctuation curve. That is, in renewable energy generation facilities such as solar and wind power generators, generation power fluctuations occur depending on climate such as temperature or wind power. In FIG. 1A, P denotes a maximum power point of current or voltage, and B denotes a minimum power point.

FIG. 1B shows how the amount of voltage or current fluctuates from point P to point B according to morning, noon, evening, or wind, clouds, and temperature even on a good day. In this state, ESS (hereinafter also referred to as'capacitor' or'battery') and solar cell module (hereinafter abbreviated as'solar','solar module' or'solar cell') converging the fluctuation range of high point P and low point B. ), the pulse width control (hereinafter referred to as'PWM') technology is used to smoothly interlock. As a pulse width control, if the voltage is controlled by a time function that decreases the effective time width at the P point and increases the effective time width at the B point, the ESS terminal voltage is the average constant voltage even if the voltage from the solar module changes. This is maintained because the ESS has an equivalent smoothing characteristic that absorbs the shock voltage like a capacitor.

However, in order to apply the pulse width control as described above, it is premised that the solar voltage should be at least A point even though the ESS voltage is the B point height. This is because the natural drop voltage that can be charged as shown in FIG. 2B can always be maintained stably. If the voltage of the solar is not set as high as point A in FIG. 1B, but is set near point B in FIG. 1B, the natural drop that can be charged cannot be established as shown in FIG. 2A below point B when solar energy is weak. Even if solar power is being produced from inside the solar cell, it will not flow into the external charging current. In other words, the solar power at this time becomes the reactive power.

In short, in the case of a power generation facility using solar, for example, in order to achieve effective ESS charging in consideration of temperature changes and fluctuations in the sunshine state, it is necessary to set the power generation voltage as high as point A and adjust the excess by PWM. Due to the specificity of the open voltage of the solar and solar, a large shock pulse occurs when it is turned on and off by PWM, adversely affecting the ESS as described below.

For example, the terminal voltage of the ESS with a nominal voltage of 12V varies by more than +20% to 12V, 13.5V, 14V, 14.5V, 15V, etc. depending on the charging mode, so if the 12V ESS charging solar is about 10% If designed with 13.5V, ESS cannot be fully charged even under normal solar energy (solar intensity). Therefore, general solar equipment can charge even at the maximum ESS terminal voltage of 15V, so it compensates for a voltage of +25% compared to the ESS nominal voltage, and also adds a voltage of +20% for temperature compensation, adding the maximum rating of the solar as a whole. The voltage is designed as a surplus facility of 18V, or 50%, which is 150% of the basic ESS voltage (12V).

In the winter, the maximum rated voltage is increased by about 20% during the winter season. This voltage increase can be considered desirable because it can be seen as an increase in power, but in terms of terminal voltage of the ESS, an increase in unnecessary voltage may be an undesirable phenomenon since it affects overvoltage. That is, in the winter, the PWM operates at a voltage height of +70%, which is higher than the intended +50% in the summer, and the impulsive pulse therefrom adversely affects (refer to the description of FIG. 2D below).

Furthermore, a variable that is added to the surplus facility and has a more adverse effect is the difference between the maximum rated voltage and the open voltage of the solar module. That is, during the off period during which charging is blocked by the ESS by the PWM, the solar voltage rises to the open voltage, so a voltage of about 30%, which is the difference between the maximum rated voltage and the open voltage, is added, so that the overall overvoltage from the surplus facility is + It goes up to +100%, which is higher than 70%. In particular, when the voltage rises above 100%, the pulse width narrows sharply in inverse proportion to this. The fact that the pulsed shock wave of such a narrow time width continuously applies shock energy to the ESS at a period of 100 kHz to 500 kHz causes static ignition. It has a stimulus similar to that of the lighter that it causes.

The danger caused by such a pulsed shock wave is a concern that power generation facilities of high voltage and high power are concerned, and schematically explaining this is FIG. 2D.

That is, FIG. 2D is a state in which the impact pulse voltage is changed according to the height of the solar voltage and the on-off operation of the PWM, and it is not necessary to think that it is an impact at the level of (a) to (c) where the solar voltage is low. Although it has the same pulse height and pulse width, it shows that severe shock pulses (ie, shock peak voltage) are generated in (d) and (e) where the solar voltage is higher than that.

For example, when the voltage of the solar module is applied to 220V in the ESS with 200V as the terminal voltage, the charging current continuously flows to the ESS naturally without shocking peak voltage as shown in (a) because the ESS terminal voltage is interlocked due to normal charging. (B) when the solar module voltage is applied at 230 V, and (c) when it is applied at 250 V. As the voltage is different from the ESS terminal voltage, an impact pulse voltage is generated as much as the voltage of the difference (at a time other than the duty rate). The pulse voltage is generated, and the principle of generating the pulse voltage corresponds to a basic technique for controlling charging using PWM, so those skilled in the art will appreciate it, and further explanation is omitted. .)

However, the level of the pulse voltage increases with a peak voltage of 100V (that is, 300V-200V=100V) in (d) where the solar voltage is applied to 300V, and in particular (e) when the solar voltage is applied to 400V, the pulse height of 200V In addition, since the width of the pulse is very sharply narrowed, it can be seen that the properties are changed to a shocking peak voltage in the form of a sharp pulse. This is a phenomenon caused by a vicious cycle where the higher the solar voltage is, the narrower the pulse width is, and in the on-off action of the pulse width, the range of the open voltage of the solar becomes the height of the impulsive pulse. When relying on ESS charging to the solar, the sharp shock pulse gives a hazard, and it is possible to cause the ESS to shorten or explode because it stimulates the ESS terminal with an electrostatic shock to be compared to a lighter.

In short, the shocking peak voltage that appears while turning on and off with PWM can be as high as 2 times the original ESS terminal voltage, even though the peak voltage increases the terminal voltage of the ESS due to the smoothing characteristics of the ESS. Even if it does not appear as, the current shock applied to the inner surface of the ESS is inevitable to cause a chemical reaction inside the ESS. Therefore, this shocking pulse can be a factor such as generating unwanted gas in an advanced ESS such as a lithium battery. It is. If such a shocking peak voltage is severely generated, it may be ESS, PCS, or both or both of them may be burned, and this may be a cause of fire.

The Republic of Korea patent applications 10-2018-0001666, 10-2017-0153635, 10-2015-0008277 (hereinafter referred to as prior art) invented by the present inventors are interlocked so that the solar module and the ESS terminal can charge even the same voltage. As described above, a technique for reducing the 50% surplus facility to 0% or less is disclosed. That is, this prior art lifts the power output point voltage of the power generation facility to level 2 (Level 2) by supplying supplementary power (Level 1) as shown in FIG. 3A in a situation where a natural drop is not established as shown in FIG. 2A. Technique. If the voltage (solar voltage) of the power generation facility is lowered, the level of the supplementary voltage is further increased as shown in FIG. 3B, and if the solar voltage fluctuates irregularly during the day, the voltage of the supplementary power is added and subtracted accordingly as shown in FIG. 3C to output power to the output terminal. Stabilize it.

In particular, this prior art lifts the voltage by lifting it as supplementary power when the solar voltage is lower than the ESS voltage, so that the voltage of the summed power (hereinafter referred to as the'total potential' or'total power' measured voltage measured in the concept of the summed power) It is for the purpose of regenerating all of the reactive power through'), so using this, the voltage of the solar module can pass the charging current to the ESS even if it is equal to or less than the voltage of the ESS. That is, when the solar voltage is low and power from the solar cannot be discharged to the outside, the prior art reduces the burden on the installation place and equipment cost by converting the unsquirted power into the discharged state by supplying prime power to discharge it to the outside. It was disclosed for the purpose.

Since this prior art is the object of the present invention to be applied to convergence in the concept of reverse thinking, prior to explaining the specific technology to apply it, the configuration diagrams published in the publications of these prior arts will be excerpted and introduced to FIGS. 4A and 4B do.

As a main principle of FIGS. 4A and 4B, when the voltage of the solar module 11 is lower than the terminal voltage of the ESS 2, the power detection control unit 14 detects this and controls the power supplement unit 13 to control the supplementary power ( Prime power) is supplied to correspond to Level 1 in FIGS. 3A to 3C, thereby activating the voltage of the solar output terminal (Level 2). In FIG. 4B, the diode 10-1 is a member that prevents reverse current flowing into the solar module, and is particularly useful for preventing interference between modules when a plurality of solar modules are coupled in parallel, but in a single configuration or in series. When combined in multiple stages, it may be omitted as shown in FIG. 4A. In addition, the diode 12 is a member that forms a current path through a natural drop even if the power supply unit does not intervene when the terminal voltage of the ESS is very low, but in this case, it is omitted when using a flywheel diode inside the power supply unit 13 Can be.

4A is a configuration in which the power supply unit 13 and the power detection control unit 14 are supplied with power from the prime power unit 102 interlocked from an external power source 2-0, for example, a system power supply through a rectifier. 4b is a configuration that is directly supplied by direct current from the storage battery 2, which is interlocked to supplement power to the power generation equipment 11 as a concept of a prime product connected in an insulated state or a non-isolated state using a transformer.

5A and 5B are detailed diagrams for explaining the power supplement of FIGS. 4A and 4B in more detail, and the power supplement 13 controls the power of the workpiece through the control of the automatic level adjusting unit 13-2. It shows the principle. Since further descriptions such as PWM control are omitted in the present specification, please refer to the specifications of the patents if further explanations are needed.

For reference, the PWM of FIG. 5A is a square wave signal of a pulse width control concept that effectively supplies power to the battery during a period T, but the battery receiving this signal has a slow reaction speed due to the smoothing function, so the voltage actually displayed at the terminal of the battery is shown in FIG. As shown in the ascending curves of (b), (c), (d), and (e) of 2d, the waveform is a triangular wave shape with a slight gradient function.

Figure 5c shows the interlocking relationship between the power supply unit 13 and the automatic level adjustment unit 13-2 using an integrated circuit (IC) dedicated to PWM, and all of the transformers of FIGS. 5A, 5B and 5C are isolated. Although it can be seen that the (-) polarity is a common line in a transformerless method without a, it can also be applied insulated through the transformer method.

FIG. 6 is a block diagram of the power level shifting apparatus of FIG. 4B re-arranged to facilitate the following description of the present invention. FIG. 6A is a whole power level shifting apparatus, and (B) is the present invention. It is a view of rearranging the portion of the prime minister power unit 102 that is also applied to the improvement.

In short, FIGS. 4A to 5C are technologies disclosed to exert the action of FIG. 3C, and are evaluated as the most advanced technologies to date to increase the solar operation rate. However, if this technology is used for charging the ESS as it is, there is a problem that a portion of the power generation of the renewable energy generation facility (solar) is consumed by the ESS charging in times of high power demand. In other words, as the generation power of the solar system is used for charging the ESS, there is a problem that the capacity of the power generation equipment needs to be added as much as the amount of power consumed for charging. There are technical contradictions that need to be strengthened. In addition, when this technology is used for ESS charging, a new problem that arises because both the temperature change characteristics of the solar and the terminal voltage fluctuation characteristics of the ESS converge, for example, the range of 50V to 100V voltage in the 200V ESS is controlled by the Prime Minister Power The problems of heat generation, pressure resistance, and efficiency decrease are raised.

If, as an organic convergence technology according to the set conditions, the ESS is charged at midnight and operated as a power generation facility during the day with solar, and a hybrid power generation system that is combined with the prime minister's power department is comprehensive, it is stable to enhance the safety of the ESS. A new renewable energy generation system is provided that uses charging, efficient renewable energy generation, and further utilizes peak power from renewable energy to charge the ESS, while resolving the impact peak voltage.

The present invention solves the impact peak voltage by using the above technical contradiction as the cause of the explanation, but firstly operates the renewable energy generation facility through the prime water power section of the low control range and controls the fusion to operate the power stored in the ESS in the lane. By doing so, it is a hybrid power generation system that ultimately improves the safety and carbon reduction effect of ESS. The details of the specific problem solving will be described in detail below.

Prior Art 1: (Korea) Publication No. 10-2012-0108710 (published on October 05, 2012); A series voltage compensation device for solar power generation systems. Prior Art 2: (Japan) Application No. 2005-511444 (filed on July 7, 2004); Booster. Prior Art 3: (Korea) Application No. 10-2013-0153106 (announcement date 18 December 2014); Solar power battery system and how to regulate the amount of power generated. Prior art 4: (Korea) Publication No. 10-2011-0038975 (published on April 15, 2011); Output voltage control device of solar power system. Prior Art 5: (Republic of Korea) Application No. 10-2008-0018570 (announcement date 11 November 2008); Power conversion device for solar power generation. Prior Art 6: (Republic of Korea) Application No. 10-2010-0111171 (Date of Announcement December 14, 2010); Grid-connected photovoltaic device and method. Prior Art 7: Korean Patent Application 10-2018-0001666 (January 05, 2018); Power level transition device for renewable energy generation facilities. Prior Art 8: Korean Patent Application 10-2017-0153635 (November 17, 2017); Power level transition device for renewable energy generation facilities. Prior art 9: Korean patent application 10-2015-0008277 (January 16, 2015); A power level shift device for power generation facilities. Prior Art 10: Republic of Korea Patent Application No. 10-2010-0125806 (December 09, 2010); DC power supply and method.

The first object of the present invention is a hybrid renewable energy power generation system in which the ESS and the renewable energy generation facility are controlled in an interlocking relationship that is separated and combined by itself, aiming for efficient operation of the ESS safety and renewable energy facilities on the IT basis. It is intended to initiate.

The second object of the present invention is to disclose the interlocking technology of the renewable energy generation system of the ranking control system in which the power from the renewable energy generation facility is interlocked with power demand as the top priority and the ESS produces power in the next lane.

The third object of the present invention is to disclose a technology that can be commercialized as a solar cell array of a movable efficiency optimized for this, and a prime water power supply device dedicated to ESS protection.

In order to achieve the above object, a hybrid renewable energy power generation system according to an embodiment of the present invention includes a PCS (power conversion device) for supplying power generation to the grid power; Energy storage device (ESS); A renewable energy generation facility that produces power from a renewable energy source; And a hybrid unit transferring power output from the renewable energy generation facility or power output from the ESS to the PCS. Here, when the renewable energy generation facility generates an effective output, the hybrid unit transfers power output from the renewable energy generation facility to the PCS in preference to power output from the ESS.

Hybrid renewable energy power generation system according to another embodiment of the present invention includes a PCS (power conversion device) for supplying power generation to the grid power; Energy storage device (ESS); A renewable energy generation facility that produces power from a renewable energy source; And a hybrid unit having a switching configuration for switching power output from the renewable energy generation facility to the PCS. Here, when the renewable energy generation facility generates an effective output, the hybrid unit turns on the switching structure and transmits power output from the renewable energy generation facility to the ESS and the PCS, and power from the renewable energy generation facility. When it is less than the effective power, the switching configuration is turned off to transfer the power output from the ESS to the PCS.

According to the present invention, the ESS and the renewable energy generation facility are interlocked by timely automatic separation and combination, thereby effectively enhancing the safety of the ESS and increasing the operation efficiency of the renewable energy generation facility.

In addition, according to the present invention, after generating power with the charging power of the ESS, the power from the non-storage renewable energy generation facility is used as the top priority for power demand, and then stored by interlocking control to utilize the stored ESS energy for power generation in the lane order. While conserving energy as much as possible, reducing the use of fossil fuels as much as possible increases the effective effect of carbon reduction.

In addition, according to the present invention, there is an effect of reducing the facility size of the renewable energy generation facility to the minimum necessary to improve the operation rate.

According to the present invention, a solar cell array that maximizes the operation efficiency of a facility with a solar module lower than the ESS voltage itself and a product packaged with a prime power device that operates a solar module lower than the ESS voltage at the same level as the ESS. It will be industrialized as a family product.

According to the present invention, in particular, while increasing the operation rate of the solar, the adverse effect due to the difference between the maximum power and the open voltage and the temperature change characteristics in the solar cell is blocked in principle, the impact peak voltage that poses a danger in the technology using PWM is eliminated Accordingly, the ESS can be electrically protected from heat or fire.

1A and 21B are graphs showing changes in voltage or current according to changes in renewable energy.
2A to 2C are diagrams illustrating a principle in which the charging path is not established, established, and excessive in the ESS according to the renewable energy level.
FIG. 2D is a diagram for explaining that an impact pulse may adversely affect an ignition factor when charging ESS through PWM control in renewable energy, for example, a solar power system.
3A to 3C are diagrams depicting an action of supplementing and activating the insufficient voltage of the solar module to activate the power supply unit, which is applied in reverse to the present invention.
4A and 4B are block diagrams briefly introducing the technical contents of the prior art as a drawing excerpt.
5A to 5C are block diagrams showing power supplements in more detail in FIGS. 4A and 4B.
FIG. 6A is a block diagram of a power level shift device of a power generation facility disclosed in the prior arts reconstructed around the power supplement unit in order to illustrate the technology of the present invention in which the power supplement unit of the prior arts is applied and improved. Figure 6 (B) is a block diagram of the prime power unit of the present invention showing the implication by integrating the configuration of the power pump unit and the power detection control unit.
7 and 8 are block diagrams showing first to second exemplary embodiments of the present invention.
9A to 9E are graphs for explaining the coupling relationship between the solar and the prime metal in the present invention in terms of electric power.
10 is a flow chart showing the principle of generating power by interlocking the renewable energy generation facility and the ESS of the present invention on the basis of FIGS. 9A to 9E.
11 is a flowchart for explaining the main part of FIG. 10 in more detail.
12 and 13a and 13b is a block diagram showing a third embodiment and a fourth embodiment of the present invention.
14 to 17 are block diagrams showing an exemplary embodiment in which the present invention is configured as a package device for industrial use.
18 and 19 are block diagrams showing another example of preventing an impact peak voltage in a renewable energy generation facility of the present invention.

As used herein, a singular expression includes a plural expression unless the context clearly indicates otherwise. In this specification, the terms "consisting of" or "comprising" should not be construed as including all the various components, or various steps described in the specification, among which some components or some steps It may not be included, or it should be construed to further include additional components or steps. In addition, terms such as “... unit” and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software. .

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<Example 1>

7 is a block diagram showing a first embodiment of the present invention,

PCS (power converter, 105) for supplying power generation to the grid power;

An ESS (energy storage device) 107 that is connected to a charging system from a grid power source and is charged at peak power and then discharged for power generation when power generation is required;

A renewable energy generation facility 101 that produces power from a renewable energy source;

A hybrid unit (103) for combining output power from the ESS and production power from the renewable energy generation facility (101) but converting and outputting it into a first output path (D1) or a second output path (D2) according to a potential difference;

A power transmission unit 104 connected to the hybrid unit 103 to supply power for power generation to the PCS while switching power from the grid power to the ESS for charging;

Including the interlocking configuration of,

In the hybrid unit 103, a priority potential difference D1 is formed so that power from the renewable energy generation facility 101 is preferentially output when the renewable energy generation facility 101 generates an effective output, and the renewable energy generation facility 101 Hybrid power generation system, characterized in that it comprises an interlocking configuration of the matrix portions (D1, D2) in which the next order potential difference (D2) is formed so that the power emitted from the ESS (107) is output when the power from less than the active power It is disclosed.

Here, the power transmitting unit 104 converts the output of the hybrid unit 103 into operating power of the PCS 105 during the day when the renewable energy generation facility 101 is operated, for example, the solar radiation has a proper level or higher. It is configured to turn on the first switching unit (sw1) connected to supply, and turn on the second switching unit (sw2) to connect the ESS charging condition, for example, ESS charging from the grid power in the middle of the peak power band. It can contain. In addition, the first and second switching parts may include a semiconductor switch member or a mechanical switch member such as a relay.

The renewable energy generation facility 101 includes solar or wind power generation, but the renewable energy generation facility 101 is set to an equal voltage range with the ESS 107 so that power output from the renewable energy generation facility 101 In principle, the ESS 107 is configured not to be supplied with an impact peak voltage. That is, since the ESS 107 of the present invention can be charged by receiving power from a stable system power in the middle of the night through the second switching unit sw2, the ESS is not required until the shock voltage is changed. There is no need to charge 107).

Furthermore, when the voltage from the renewable energy generation facility 101 further includes a prime water power unit 102 that operates to be in an equal voltage range with the ESS 107, the renewable energy generation facility 101 increases the output maximum voltage. Basically, since it can be set equal to or lower than the ESS voltage, the impact peak voltage mentioned above can be prevented.

To this end, the prime water power can be supplied in series to the positive or negative pole of the renewable energy generation facility 101, and the power required for the operation of the prime water power unit 102 is as shown in FIG. 4A or 4B. Or from the ESS 2 using the down converter 13.

In the operation of the first exemplary embodiment, PCS, ESS, and renewable energy generators have been described in the background art, and thus detailed description thereof will be omitted, and the hybrid unit 103 and the power transmitting unit 104 will be described below. Let me explain in more detail.

First, with respect to the hybrid unit 103, the first output path D1 of FIG. 7 is a path connected by one diode, and the second output path D2 is a matrix unit D1 in which two or more diodes are connected in series. It can be seen that D2) constitutes a federated route. In this configuration, if the voltage of the solar 101 and the voltage of the ESS 107 are the same and each diode characteristic (refer to the voltage drop characteristic) is the same, the current from the solar 101 preferentially transmits power to the power transmission unit 104. Is supplied with. For example, if the voltage of the solar and ESS are both 24V and the voltage drop characteristic of 1V is applied to one diode, the voltage from the solar becomes '24V-1V=23V' when viewed from the point where (sw1) is connected, but from the ESS Since the voltage of '24V-2V=22V', electric power from the solar 101 is preferentially supplied to the power transmission unit 104 according to the current flow principle in which a large potential difference flows preferentially. This interlocking is maintained continuously unless the solar 101 is lowered to 23V or less, but even if the solar voltage is partially lowered, the prime water power unit 102 operating based on the set criteria automatically detects a shortage of the solar voltage. Supplementally, since the voltage of the solar 101 always maintains a higher potential than the ESS 107 within a range in which an equal or shocking peak voltage is not generated with the ESS 107, the operation in which the solar power is preferentially connected is weekly It is maintained throughout the period (because the power detection control unit 14 detects the peak value of the peak voltage and limits it to an appropriate height).

Here, the range in which the impact peak voltage is not generated refers to a range in which the impact peak voltage that damages the ESS is not generated as in (d) to (e) of FIG. 2d, which is (a) to (c) of FIG. 2d. Operating with a ripple of the appropriate PWM level, such as, means that it is viewed as a normal non-impact peak voltage state.

That is, as long as the electricity is produced in the solar 101 during the daytime, the electric power stored in the ESS 107 is preserved while the solar current does not flow toward the ESS 107 and the PCS is operated with the electric power produced in the solar 101. Will be. If the power (current) supplied to the PCS is weak, the voltage of the solar 101 is lowered accordingly, and accordingly, the ESS 107 is operated in parallel with the solar 101 to operate to produce electric power. The operation of the hybrid unit 103 is performed automatically and non-stop. For reference, the charging and mixing power generation of the ESS 107 will be described later.

The two diodes D2 shown in FIG. 7 does not necessarily mean that they must be a plurality of diodes, and is a concept expressed with the intention that a potential difference is formed such that a current path is formed in the diode D1 first. Therefore, diodes can be composed of only one of each with a large and small voltage drop, or the same characteristic can be arranged in D2, and two or three can be arranged.

Next, with respect to the power transmission unit 104, the second switching unit sw2 of FIG. 7 is connected to supply charging power from the grid power through the charging controller 106, and the first switching unit sw1 is the PCS The power generated from supplying the operating power to the 105 is connected to a systematic system that supplies the power to the grid 200. (sw2) is preferably configured to block the current in the reverse direction using the polarity of the diode or other semiconductor.

At this time, the first switching unit (sw1) and the second switching unit (sw2) are interlocked with IoT (Internet of Thing) to IoE (Internet od Energy) concepts such as optical sensor, wind sensor, time timer, smart grid, etc. Each is controlled by operation as follows.

The second switching unit sw2 is turned on by detecting the midnight time zone. Specifically, a fixed path establishment configuration that counts the set time and continues to operate for a certain timer period therefrom can be adopted. Another is to detect a peak power from a power company through a smart grid and adopt a configuration that is turned on as a starting point when peak power occurs at any time of the day or night.

Furthermore, when the power produced by the PCS 105 remains even if it satisfies the demand, it is detected by the power sensor of the IoE concept and the charging controller 106 establishes a second switching unit (sw2) to use it as feedback, while the PCS (105) ) Can be interlocked so that the power phase control unit 105-1 linked to) is connected to the feedback by controlling it as true or ground. Here, the concept of real or ground control is a concept of adjusting the phase difference so that the direction of the current is switched like the formation of a potential difference even without a voltage difference in alternating current.

The first switching unit sw1 is turned on when the renewable energy generation facility 101 is in operation. In the case of Solar, it is a sensor interlocking technology of IoT concept that automatically turns on by determining whether the solar radiation intensity satisfies an appropriate power generation condition or, in the case of a wind power generator, whether the wind power satisfies an appropriate power generation condition. However, in the case of solar, it can be turned on by sensing it with a separate sensor or by using the voltage generated by the solar itself to replace the role of the illuminance sensor (CDS, etc.).

That is, the power transmission unit 104 is the hybrid unit when the conditions for operating the renewable energy generation facility 101, for example, in the case of a solar day, and in the case of wind power, when the wind strength reaches an appropriate level Turn on the first switching unit (sw1) to connect the output of (103) to the operating power of the PCS (105), and the ESS charging conditions, for example, in the late night of the peak power band so that ESS charging from the system power The connecting second switching part (sw2) is turned on.

If the output of the PCS 105 exceeds the demand power and the PCS power remains, the output of the charging controller 106 is controlled to feedback charge the ESS 107 through the control of the power phase controller 105-1. It may include a configuration. Here, the phase advance means that the ACS phase of the PCS 105 is prior to the system power phase, so that the PCS power is preferentially used as the charging power rather than the system power. Normally, the facts and the ground are made in a range of about 5% to 10% of the grid power in consideration of current flow adequacy, but are not limited thereto. In the present invention, controlling the truth means that the concept of controlling the difference in voltage from direct current to changing the flow of current from alternating current to phase difference means that in the present invention, it is supplied to the ESS whether using direct current or alternating current. It can be seen that, in principle, the impact peak voltage at the charging voltage is completely eliminated. In the DC power, the impact peak voltage is prevented by the prime power unit 102, and the specific action of the prime power unit 102 will be described below when describing the second exemplary embodiment.

The first switching unit sw1 and the second switching unit sw2 are preferably operated alternately, but can be operated in parallel during a period in which the truth control is applied.

<Example 2>

8 is a block diagram showing a second exemplary embodiment of the present invention,

PCS (power converter, 105) for supplying power generation to the grid power;

An ESS (energy storage device) 107 that is connected to a charging system from a grid power source and is charged at peak power and then discharged for power generation when power generation is required;

A renewable energy generation facility 101 that produces power from a renewable energy source;

A hybrid unit that combines the output power from the ESS 107 and the production power from the renewable energy generation facility 101, but converts and outputs it to a first output path sw3 or a second output path sw4 according to switching control. (103);

A power transmission unit 104 connected to the hybrid unit 103 to supply power for power generation to the PCS 105 while switching power from the grid power to the ESS 107 for charging;

Including the interlocking configuration of,

In the hybrid unit 103, when the renewable energy generation facility 101 generates an effective output, the first output path sw3 is switched on so that power from the renewable energy generation facility 101 is preferentially output, When the power from the renewable energy generation facility 101 is less than the effective power, the interlocking configuration of the switching control units sw3 and sw4 in which the second output path sw4 is switched on so that the power discharged from the ESS 107 is output is output. Disclosed is a hybrid renewable energy power generation system characterized by including.

That is, in the first embodiment, the non-stop matrix units D1 and D2 are operated, and in the second embodiment, there is only a difference of switching switching to the first output path sw3 or the second output path sw4, and the rest of the ESS The charging and the like are the same as in the first exemplary embodiment, and hence, the description will be limited to the differences, to avoid repeated mention.

In the second embodiment, the module voltage is optimized to prevent the solar module voltage from rising more than necessary, for example, within +30% to -50%, preferably +20% to -20%, compared to the ESS voltage. Optimize the solar module array by lowering it to the module voltage. This is possible because the prime water power unit 102 to be described below is provided in the present invention. Accordingly, in the solar optimized to the present invention, the impact peak voltage as mentioned in the background art (for example, +30% in the prior art) ~+100% or more) will not occur from the beginning.

However, in the present invention, for example, in the case of optimizing the solar module voltage to -20%, the prime water power unit 102 operates to compensate for a voltage in the range of -20% that is insufficient. Specifically, the prime water power unit 102 is interposed between the renewable energy generation facility 101 and the PCS 105 and output voltage (-20%) of the renewable energy generation facility when the discharge voltage of the ESS 107 is insufficient. ) By supplying the priming power to supplement (+20%) the discharge voltage level of the ESS 107, so that the renewable energy generation facility 101 and the ESS 107 are mixed or alternately within the equal voltage range. It includes a configuration for controlling to supply the operating power to the PCS (105).

Here, the range of the equal voltage is a range that accommodates a range of voltage fluctuations required for discharge and charging of the ESS 107, for example, most preferably (+/- 5%) to (+/-10%) solar. And to keep the ESS voltage equal. However, this equal voltage range may include +/-30% ripple due to the impact of the pulse when the PWM is running.

The specific operation of the switching control unit (sw3, sw4) is preferably to be switched according to the result of checking the validity of the prime water power unit (102). Specifically, the first output path (sw3) is cut off and stored in the ESS (107) as the second output path (sw4) when a certain effective range is determined by determining the actual benefits for the operation of the prime water power unit (102). It operates as a concept of operating the PCS 105 by releasing energy. Hereinafter, this will be described in detail with reference to FIGS. 9A to 9E, 10 and 11.

9A (A) is a power-voltage curve (P-V curve) showing a state in which the maximum power point is changed according to the solar insolation intensity in a typical solar module. According to this, it can be seen that the peak point of the electric power varies greatly depending on the insolation intensity because the voltage changes according to the insolation intensity and the current also changes.

FIG. 9A(B) is a graph for comparing and explaining the solar module 101, the prime minister power unit 102, and their coupling action on the P-V curve.

(x1) is the power curve produced by the solar, (x2) is the power curve supplied to the prime water, and (x3) is a conceptual diagram showing the power curve produced as the total power by summing them, according to which the solar is normal When producing power in the range (eg -10% voltage range; x1), the prime water supplements the insufficient power (ie +10%; x2) to increase the total power of the solar to the (x3) curve. (X1 is a power curve according to the difference voltage between level 1 and level 2 shown in FIGS. 7 and 8, x2 is a power curve according to the difference between level 0 and level 1, and x3 is a difference between level 0 and level 3 It is equivalent to the power curve.)

At this time, the output (x2) of the prime water power unit 102 is 0 ~ 30% (preferably +/-5% ~ +/-10%) of the total voltage of (x3) through the power detection control unit 14 Because it is controlled so that it does not exceed, the factor that will generate the impact peak voltage in the range of 50% to 100% is eliminated. For this, renewable energy facilities are provided in cooperation with grid power when the power of the prime water power supply unit 102 supplied is external power (2-0), and in cooperation with the ESS 107 when procured by the ESS 107. It becomes a hybrid method that works. In short, FIG. 9A shows that, wherever the procurement material is procured, a small amount of the procurement material and a stable voltage renewable energy generation facility without an impulse peak voltage are operated, and thus there is no possibility of generating an impulse peak voltage.

9B shows a case where the solar production voltage is lowered due to the weak solar radiation intensity. Since the prime water power unit 102 operates to keep the total power x3 constant, at this time, the prime power unit increases the output voltage x2 to compensate for the portion where the solar output voltage x1 is insufficient. Accordingly, it can be seen that the overall production power (x3) remains unchanged, but the role played by the producer to increase the power (x2) is increased compared to FIG. 9A. (Actually, when the solar insolation intensity decreases and the current of the solar decreases when the solar current decreases, the current of the prime water decreases, so the total power supplied through the voltage supplement will be slightly different from the total power (x3) curve in the drawing, but the explanation For ease of illustration, it is shown as shown in the drawings, so please understand the meaning of this conceptually.)

9C shows a case where the solar production voltage is lowered due to the weaker solar radiation intensity. At this time, the prime water power unit 102 increases the output voltage (x2) of the prime power unit because it operates to keep the total power (x3) constant. In FIG. 9c, the total production power (x3) remains unchanged but produces the power. It can be seen that the role (x2) of the prime minister's power department is greater than the role of solar (x1) in the role played to do so.

FIG. 9D is an intermediate concept of FIGS. 9B and 9C, instead of randomly supplying the prime water power, it provides a total power (x3), that is, a total potential, but graphically depicts the principle of operating within a practical range. . Here, the real interest refers to whether or not the'solar+welcome product' co-produced through the first output path sw1 than in the case where the ESS alone produces electric power through the second output path sw2 in FIG. 8, In this regard, it can be determined that the result obtained through the formula of “(x3 − (x2 + prime mover consumption))” in FIG. 8 is beneficial.

Figure 9e shows that it is possible to set the limit to the maximum supply of the priming according to the actual conditions. That is, according to FIG. 9E, the primitive is interlocked with the solar radiation intensity, and the current moves within the same range, but the voltage can be restricted to be supplied to the right more than the K point, that is, not supplied with an excessive voltage. This means that the left side of the K point has a real wing and the right side has no real wing.

10 is a flowchart showing in software the principle of generating power by interlocking the ESS and the ESS of the present invention under the basis of FIGS. 9A to 9E.

That is, the main module performs a role to follow and supplement the voltage of the solar module, but if excessively charged, the balance of consumption vs. profit collapses, so the MPU 109 in FIG. 8 is the renewable energy generating facility 101 ) Of the output (x1 or x3) and the output (x2) of the prime water power unit 102 in the concept of (x2 + prime water consumption). It is a concept that further includes a connecting configuration. The MPU does not have to be a microprocessor, and a hardware configuration capable of the above determination is also possible.

In FIG. 10, 301 is an IoT to IoE sensor, such as a solar illuminance sensor, a wind sensor, a visual timer, or receiving data from a smart grid. Accordingly, it is determined whether to control the operation of the power transmission unit 104 described above, such as whether to charge or generate power.

302 and 303 are processes for starting charging when the charging requirement is met. Charging can be done in a variety of ways described above, but the most desirable is charging at midnight using grid power. However, even if it recovers the peak power remaining even during the daytime, it is more effective. In the case of using it, the present invention has been described above that it can be safely used because no impact peak voltage is generated.

(304) determines whether the renewable energy generation facility meets the operating conditions according to the result of (301). If yes, start the power generation facility.

305 and 306 are processes to determine if there is a real benefit. Even considering the supplied prime water (x2 + prime water operation consumption), if there is a benefit from the total power (x3), which is the total power, the solar power is generated by turning on the first output path (sw3). At this time, the prime water power unit 102 serves to supplement the shortfall of the solar 101.

(307) and (308) corresponds to the case where power generation is possible from the solar 101 but there is relatively little benefit (no) compared to the incoming prime 102. Also, when the PCS 105 is operated with power from the solar, all of the demanded power is not satisfied. For example, when the solar radiation has weakened solar power and the current is lowered, the process is activated when a larger demand power is generated. At this time, the system additionally turns on the second output path (sw4) to control the PCS (105) to be operated by a mixed operation of solar +ESS.

(309) and (310) can supply the prime water to operate the solar, but it takes into account the additional power consumption of the prime money, i.e., the total prime power consumed in the prime money (x2 + consumption of prime money) If the total power (x3), which is the total power, is rather small, it is determined that the power production obtained by operating the solar has no real benefit, and the system produces power by itself. Of course, at this time, if there is no demand power or if power is not transmitted to the system power, the PCS 105 will not need to be operated. Accordingly, the power accumulated in the ESS will be preserved. The determination of whether to operate may be determined by detecting whether power demand of the PCS 105 load end is required (IoE, etc.).

311 and 312 are cases where the ESS reaches the discharge end voltage. This process can be applied even if there is a danger such as overheating of the ESS, and accordingly, power generation through the ESS is stopped and the ESS is prepared for charging.

(313) and (314) is a process of stopping the operation of the solar by detecting the termination of the solar operating conditions as measured by IoT. The operation is stopped until the operating condition 301 is not detected again, and then ESS charging is prepared through the system power, etc. in the midnight hours (301, 302, 303).

11 is a flowchart illustrating the main part of FIG. 10 in more detail.

If the operating conditions in FIG. 11 are satisfied (501) and then it is determined (502) that the gain of the solar 101 is greater than the ESS (107), the system produces power (503) in the solar 101 priority. At this time, the first output path (sw3) is first turned on, and a stepless potential difference control (D1) or a switching control (sw3) may be applied.

In FIG. 11, after the operating conditions are satisfied (501), the roles such as the potential difference between the ESS 107 and the solar 101 are equally similar, or the solar 101 alone is insufficient in operating the PCS 105 to meet demand power. If determined (504), the system controls the solar 101 and the ESS (107) to operate the PCS (105) mixed (505). At this time, the first output path (sw3) and the second output path (sw4) are turned on at the same time or by controlling the current value of each path in a time difference or analog, such as PWM, control to preferentially utilize power from the solar 102 as much as possible. can do. The PWM output at this time is preferably interlocked via the smoothing circuit unit 13-2-2 as shown in FIG. 5C.

In FIG. 11, when the operating conditions are satisfied (501) and then it is determined (506) that the gain through the solar 101 is less than the ESS (107), the system generates power (507) by the ESS 107 alone. At this time, the first output path (sw3) is blocked and the second output path (sw3) is blocked in order to prevent the reduction in efficiency because it means that producing power through the solar 101 is lower than producing power directly to the ESS (107). It is preferable that only the output path sw4 is turned on.

The solar power generation described above is also applied to a configuration using wind power, but the description thereof will be omitted.

By this action, the renewable energy generation facility (solar module) can be operated with the principle of installing at a low voltage level so as not to generate an impact peak voltage from the beginning, and instead supplying and supplying the insufficient voltage with a prime voltage. On the other hand, when charging in the middle of the night, it receives stable low voltage from the grid power, so it affects the temperature and the open voltage coefficient together as in the solar, so there is no problem of shocking peak voltage exceeding +50% ~ +100%. The normal charging and discharging function is secured to enhance the safety of the ESS.

In FIG. 8, reference numeral 108 is a power level detection control unit that detects (x1, x2, x3).

<Example 3>

12 is a block diagram showing a third embodiment of the present invention,

PCS (power converter, 105) for supplying power generation to the grid power;

An ESS (energy storage device) 107 that is connected to a charging system from a renewable energy generation facility or a system power source, charges at peak power, and discharges the electricity for power generation when needed;

A renewable energy generation facility 101 that produces power from a renewable energy source;

A hybrid unit 103 that combines the discharge power from the ESS 107 and the production power from the renewable energy generation facility 101, but opens or closes the output path sw3 according to switching control;

A power transmission unit 104 connected to the hybrid unit 103 to supply power for power generation to the PCS 105 while switching power from the grid power to the ESS 107 for charging;

Including the interlocking configuration of,

The hybrid unit 103 has an output path (sw3) to operate the ESS charging and PCS 105 with the power from the renewable energy generation facility 101 when the renewable energy generation facility 101 generates an effective output. When the power is switched on and the power from the renewable energy generation facility 101 is less than the effective power, the output path sw3 is switched off to configure the interlocking configuration in which the power emitted from the ESS 107 is supplied to the PCS 105. It is characterized by including.

In particular, in the third exemplary embodiment of FIG. 12, the charging and discharging system of the ESS 107 is integrally connected to the solar module 101 in parallel. In this configuration, the solar module itself is optimized to a low voltage, while maximizing the characteristics of adjusting the low voltage only within a range in which the prime power unit 102 does not generate the impact peak voltage through the power detection control unit 108. By utilizing it, the charging path of the ESS 107 is always on. Accordingly, while the peak power is supplied through the grid power or supplied from the solar 101, the ESS 107 is capable of preserving the power that is always stored, and the impurity that absorbs the demanded power and absorbs the remaining solar power as the peak power. However, buffering is performed. A diode preventing reverse current may be connected to a path where the charge controller 106 and the ESS 107 are connected.

All other components operate in the same context as the third embodiment, and thus duplicate description is omitted.

<Example 4>

13A is a block diagram showing a fourth embodiment of the present invention. In particular, the fourth embodiment of the present invention of FIG. 13A is a modification of the first embodiment in which only the solar 101 is removed and the prime water power unit 102 is removed. Since direct charging is blocked in the second output path (D2), the impact peak voltage is not applied to the ESS (107), thereby enhancing the safety of the ESS (107).

That is, as described above, the charging is procured from the system power through the second switching path (sw2), so even through this, the shocking peak voltage is not applied, even if there is peak power remaining from the solar 101, the shocking peak voltage as DC As it is not directly supplied to the ESS 107, but is supplied within a stable voltage range through the power phase control unit 105-1 that performs phase and ground control at the rear end of the PCS 105, similarly, ESS safety from impact peak voltage is guaranteed do.

For reference, since the PCS 105 has a certain range of input voltage flexibility as shown in FIG. 13B, the PCS 105 is resistant to the impact peak voltage, whereas the ESS susceptible to the impact peak voltage is connected to the reverse polarity diode D2. Thus, since the ESS 107 is DC-separated from the solar 101, the safety of the ESS resulting from PWM is secured similarly to the first, second, and third exemplary embodiments.

Other parts have already been described above, so duplicate descriptions are omitted.

14 to 17 are block diagrams showing an exemplary embodiment in which the present invention is configured as a package device for industrial use.

14 is a configuration in which the prime water power unit 102, the hybrid unit 103, and the power transmission unit 104 are packaged 400,

Connect the first input terminal, which is the input power for power generation, to the solar 102 and the second input terminal to the ESS 107, connect the output terminal for power generation to the PCS 105 and the input terminal for charging the ESS 107. The package 400 is configured as a system that is connected to the charge controller 106.

In this block diagram, the prime water power unit 102 is illustrated as being connected in series to the positive (+) polar terminal of the solar 101.

That is, the packaged (400) of the present invention, the input and output terminal interlocking configuration of the power source device (400) package is a product that is associated with each conventional member and has disclosed a configuration to achieve industrialization, in this configuration (102) is preferred to set the upper limit of the maximum power to the default to operate within the prime power control range as specified in FIG. 9E. That is, it is possible to limit the setting so that the prime material is supplied only within an effective range while preventing excessive impact peak voltage by this default setting.

15 is a configuration in which the prime water power unit 102, the hybrid unit 103, the power transmission unit 104, and the power detection control units 108, 109 are packaged (400-1, 400-2).

Connect the first input terminal, which is the input power for power generation, to the solar 102 and the second input terminal to the ESS 107, connect the output terminal for power generation to the PCS 105 and the input terminal for charging the ESS 107. The first output is configured by connecting the outputs of the controllers 108 and 109 to determine the efficiency between the solar and the prime using a microprocessor to the control input terminal of the hybrid unit 103, while constructing a package with a system that connects to the charging controller 106. It constitutes a package system in which the path sw3 and the second output path sw4 are additionally controlled.

In this block diagram, the prime power unit 102 is shown connected in series to the positive (+) polar terminal of the solar 101.

In other words, the packaged (400-1, 400-2) of the present invention, the input and output terminal interlocking configuration of the package of the power source device 400 is industrialized as a product associated with each of the conventional members, where the prime power unit (102) is the first and second output paths (sw3, sw4) according to the result of the detection judgment of (x1, x2, x3), in particular (x2, x3), which is sensed and controlled through the efficiency detection control block 400-2. It is a configuration to automatically control. This automatic control configuration prevents the impact peak voltage and automatically controls the prime material within the most efficient range.

FIG. 16 is a configuration in which the prime water power unit 102, the hybrid unit 103, the power transmission unit 104, and the power detection control unit 108.109 are packaged (400-1, 400-2).

Connect the first input terminal, which is the input power for power generation, to the solar 102 and the second input terminal to the ESS 107, connect the output terminal for power generation to the PCS 105 and the input terminal for charging the ESS 107. The package is composed of a system that is connected to the charging controller 106, but the microprocessor 109 is used to connect the control unit output determining the efficiency between the solar and the prime product to the control input terminal of the hybrid unit 103, thereby providing the first output path ( sw3) and the second output path (sw4) are additionally controlled, and an interlocking system is configured so that a part of the ESS is charged from the inside of the package. Other than that, the concept is the same as in FIG. 15, and forms the concept of a commercial power equipment for industrialization.

FIG. 17 is a configuration in which the prime water power unit 102, the hybrid unit 103, and the power transmission unit 104 are packaged 400.

Connect the first input terminal, which is the input power for power generation, to the solar 102 and the second input terminal to the ESS 107, connect the output terminal for power generation to the PCS 105 and the input terminal for charging the ESS 107. The package is configured with a system that connects to the charge controller 106, and this configuration is shown as being connected in series to the negative (-) polar terminal of the solar 101, as opposed to FIG. have. As can be seen, the prime water power unit of the present invention will be able to understand that the natural law is established even if it is connected to either the positive (+) polar or the negative (-) polar when interlocked with the solar. If there is a difficult part in the connection between polarities, then use a transformer or DC insulation with a photocoupler.

The industrialization of the present invention includes a solar module array that optimizes an existing solar module array that was installed at a surplus facility rate of 50% compared to ESS by +20% compared to ESS, or equivalent to ESS or -30% compared to ESS due to the present invention. do.

According to this, the existing solar module (150%) including the surplus facility and the solar module (eg 100%) of the present invention which is only the actual use facility of the present invention differ only in the power consumption of some of the priming materials, and are similar. Since it is possible to produce a range of power, the present invention is that a significant difference occurs in the operation rate compared to the existing equipment.

18 and 19 are block diagrams showing another exemplary embodiment for the purpose of preventing the impact peak voltage in the renewable energy generation facility of the present invention,

FIG. 18 is a modified example of procurement of a configuration for procuring the prime water power from the external power source 2-0 or the ESS 2 in FIG. 14 as an example of procurement from the solar 101. According to this, after the down converter 102-1 branching a portion from the solar power serves to supply power to the prime water power unit 102, the step-down voltage obtained therefrom is serially connected to the positive (+) polarity of the solar 101 By overlapping the furnace, the lifted electric power is supplied to the hybrid unit 103.

18, it is desirable to reinforce some components in the illustrated starting power characteristics, but this configuration is disclosed as an example of implementation since the concept as shown in FIG. In addition, as the case shown in FIG. 17, the prime minister power unit 102 may also be connected to a negative polarity, but the description of the city will be omitted here, and if necessary, refer to the contents of related family patents.

FIG. 19 shows an exemplary embodiment in which the prime water power unit 102 in FIG. 14 is replaced with a boost converter 102-2. According to this, after all the power from the solar 101 is received by the boost converter 102-2, it is converted to a boosted voltage and supplied again to the hybrid unit 103. In this case, lifting is performed by partially converting as much as the prime product. As a concept of boosting that converts all of the objects, not the concept of, there is a difference in operation efficiency, but the object of the present invention is to achieve a shock peak voltage from a renewable energy generation facility, which can be achieved. It started.

The present invention may include various other embodiments, but further description is omitted. However, the omission is on the premise that the scope of the claims of the present invention is interpreted as including the scope of equality or substitution in the right.

In the present invention, when the charging controller 106 outputs a constant voltage in FIGS. 13A to 17 while the second switching path sw2 is always connected, the output current from the solar 101 becomes weak as the sunlight becomes weak. When decreases, it acts in the form of a seesaw that automatically replenishes current with the ESS 107. That is, it is possible to completely prevent the electrostatic phenomenon in which the output of the solar 101 is invalidated despite the operation of the prime water power unit 102.

Normally, about 50% of the solar module is designed to charge the ESS, but when the ESS is fully charged, no current flows, and this voltage becomes the peak value of the PCM pulse, and in addition to this, it increases to the open voltage. Up to 100% more voltage pulses are generated, which is a voltage boosted three times as a surge. The surge suppressor of the present invention serves to absorb the voltage pulse at this time. Since the surge current value is not large, it can be solved by using only a zener diode. That is, the present invention may further include a configuration having a surge suppressor function to prevent surge applied to the ESS.

The above-described embodiments of the present invention are disclosed for the purpose of illustration, and those skilled in the art having various knowledge of the present invention will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. It should be regarded as belonging to the following claims.

Solar module (1, 11, 101)
Energy storage device (ESS, 2)
Power detection control unit (14)
Power Supplement (13)
Prime Water Power Department (102)
PCS (power converter, 105);
ESS (Energy Storage Device, 107);
Renewable energy generation facility 101;
First output path (D1)
2nd output path (D2)
Hybrid unit 103;
Power transmission unit 104;
Matrix part (D1, D2)
1st switching part (sw1)
Second switching part (sw2)
Grid power (2-0)
Charge controller (106)
Grid power (200)
Power phase control unit (105-1)
(x1): Voltage or power at both ends of the solar
(x2): Prime voltage or power
(x3): Solar + prime voltage or power, total potential, total power
301: IoT to IoE sensor
302 and 303: Charging start process when the charging requirement is met
(304): judge whether it meets the operating conditions
(305) and (306): process to determine if there is a real benefit
(307) and (308): Solar+ESS mixed operation process
(309) and (310): ESS alone, the process of generating electricity
(311) and (312): Process when the ESS reaches the discharge end voltage
(313) and (314): the process of stopping the operation of the solar bar as measured by IoT, etc.
Power detection control unit (108, 109)
Prime Water Power System Package (400, 400-1, 400-2)
Down converter (102-1)
Boost converter (102-2)

Claims (14)

PCS (power conversion device) for supplying power generation to the grid power;
Energy storage device (ESS);
A renewable energy generation facility that produces power from a renewable energy source; And
It includes a hybrid unit for transmitting the power output from the renewable energy generation facility or the power output from the ESS to the PCS,
The hybrid unit is a hybrid renewable energy generation system characterized in that when the renewable energy generation facility generates an effective output, the power output from the renewable energy generation facility is preferentially transferred to the PCS over the power output from the ESS. PCS (power conversion device) for supplying power generation to the grid power;
Energy storage device (ESS);
A renewable energy generation facility that produces power from a renewable energy source; And
It includes a hybrid unit having a switching configuration for switching the power output from the renewable energy generation facility to the PCS,
The hybrid unit, when the renewable energy generation facility generates an effective output, the switching configuration is turned on to transfer the power output from the renewable energy generation facility to the ESS and the PCS, and the power from the renewable energy generation facility is effective. The hybrid renewable energy generation system, characterized in that when the power is less than that, the switching configuration is turned off to transfer the power output from the ESS to the PCS. The method according to claim 1 or 2,
A hybrid renewable energy power generation system further comprising a power transmission unit connected to the hybrid unit to supply power output from the hybrid unit to the PCS while switching power from a grid power supply to the ESS for charging. . According to claim 3, The hybrid unit,
A first diode connected between the renewable energy generation facility and the power transmission unit; And
Including a plurality of second diodes connected between the ESS and the power transmission unit,
When the renewable energy generation facility generates an effective output, the power output from the renewable energy generation facility is transmitted to the power transmission unit in preference to the power output from the ESS due to the potential difference between the first diode and the second diodes. , Hybrid renewable energy generation system, characterized in that when the power from the renewable energy generation facility is less than the effective power, the power output from the ESS is transferred to the power transmission unit. According to claim 3, The hybrid unit,
A first switch connected between the renewable energy generation facility and the power transmission unit; And
It includes a second switch connected between the ESS and the power transmission unit,
When the renewable energy generating facility generates an effective output, the first switch is turned on and the second switch is turned off so that the power output from the renewable energy generating facility is transmitted to the power transmission unit, and The hybrid renewable energy generation system, characterized in that when the power is less than the active power, the first switch is turned off and the second switch is turned on, so that the power output from the ESS is transmitted to the power transmission unit. According to claim 3, The power transmission section of the ESS from the grid power supply to the first switching unit and the ESS charging conditions to connect the output of the hybrid unit to the operating power of the PCS to the condition that the renewable energy generation facility is operating. Hybrid renewable energy power generation system, characterized in that it comprises a second switching unit for connection to be charged. The method of claim 6, wherein the second switching unit comprises a configuration for connecting to supply the charging power from the grid power through the charging controller and the first switching unit comprises a configuration for connecting the PCS to supply the demand power to the grid power Hybrid renewable energy power generation system. The hybrid renewable energy generation according to claim 6, wherein the power transmission unit comprises a configuration in which the output of the charge controller interlocked with the phase advance feedback charges the ESS when the output of the PCS exceeds the demand power. system. The method of claim 1 or 2, wherein the renewable energy generation facility includes solar or wind power generation, and the renewable energy generation facility is set to an equal voltage range with the ESS, so that the power output from the renewable energy generation facility is Hybrid renewable energy power generation system comprising a configuration to limit the supply to the ESS to the impact peak voltage. The renewable energy generation facility according to claim 3, wherein the renewable energy generation facility serially supplements the path of the renewable energy generation facility where the prime voltage supplied as supplemental power is set in series after the output maximum voltage is lower than the ESS voltage. Hybrid renewable energy generation system, characterized in that it further comprises a prime water power unit that operates so that the voltage from the facility is in the equal voltage range with the ESS. The hybrid of claim 10, wherein the hybrid unit delivers the output from the renewable energy generation facility to the PCS when there is a real benefit by comparing the output of the renewable energy generation facility and the supply power to the prime water power unit. Renewable energy generation system. 11. The method of claim 10, wherein the prime power unit is connected in series to the positive (+) polar terminal or the negative (-) polar terminal of the renewable energy generation facility,
Hybrid power generation system, characterized in that the prime power unit, the hybrid unit and the power transmission and reception unit is composed of a single package. The method of claim 10,
Further comprising a down converter for branching a certain power from the renewable energy generation facility and supplying power to the prime water power unit,
The hybrid renewable energy generation system, characterized in that the power output from the renewable energy generation facility and the power output from the prime water power unit are supplied to the hybrid unit. The method according to claim 1 or 2,
Further comprising a boost converter for raising the power output from the renewable energy generation facility,
Hybrid renewable energy generation system, characterized in that the power raised by the boost converter is supplied to the hybrid unit.

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