KR20200080974A - System and method for controlling power - Google Patents

Abstract

The present invention provides a system for controlling power which comprises: a power unit; and a power control device controlling output power in accordance with a control signal of a high rank controller when power generated from the power unit is supplied to a load, wherein the plurality of power control devices are connected to the power unit. The plurality of power control devices perform an output operation at a time (Ps) in accordance with the following equation (A) by using a unique code (ID) assigned to each of the plurality of power control devices. [Equation A] (where Ps is the operation time, T is the control cycle time for all of the plurality of power control devices, n is the number of the plurality of power control devices, and IDx is a unique code for each power control device).

Description

Power control system and method {SYSTEM AND METHOD FOR CONTROLLING POWER}

The present invention relates to a power control system and method, and more particularly, to a power control system and method including a power control device that receives a control signal from an upper level controller and adjusts the amount of power supplied to a load.

The power control device is a device that performs temperature control, power adjustment, motor control, and lamp control for dimming by controlling the amount of power supplied to the load using power semiconductor elements (SCR, TRIAC, IGBT, FET, etc.). In particular, it is a key device used in many industrial sites such as heat treatment equipment, semiconductor equipment, and display equipment.

1 is a block diagram of a power control system.

As shown in FIG. 1, the power control device 13 may receive a control signal from an upper level controller (temperature controller, communication device, etc.) 14 and adjust the amount of power supplied to the load 12.

The output power of the power control device 13 can be determined according to the control signal, and the output power of the power control device 13 is not the size of the control signal, but the duty rate (on/off ratio) within a certain period. It may be determined (see FIG. 2(a)) or may be determined according to a certain waveform or the number of cycles of the waveform (see FIG. 2(b)).

3 is a configuration diagram of a power control system in which a plurality of power control devices are connected in parallel.

As shown in FIG. 3, a plurality of power control devices 13 may be connected to the power supply unit 11 in parallel, and at least one load 121 to 124 may be connected to each power control device 131 to 134. Can. Here, one or more upper level controllers 14 that transmit control signals to each of the plurality of power control devices 13 may be used.

When a plurality of power control devices 131 to 134 are operated (or output operation) in the related art, a plurality of output powers may simultaneously operate (part A) without overlapping (or overlapping or bottlenecking) each other, but a plurality of outputs A phenomenon (part B) where electric powers overlap each other at the same time may occur (see FIG. 4).

Due to the overlapping phenomenon, a flicker phenomenon may occur in the power supply unit 11 supplied to the power control device 13, and a high power value may appear due to the overlapping phenomenon (see FIG. 5).

The conventional method used to solve this problem is to transmit and receive a synchronization signal to confirm the operation between a plurality of power control devices (131 ~ 134), for example, as shown in Figure 6, the power control device By setting the fields 131 to 134 as masters or slaves, the power control devices of the slaves may operate in synchronization based on the master. For example, as shown in FIG. 6(a), the power control devices of reference numeral 131 may be set as a master, and each power control device of reference numerals 132 to 134 may be set as a slave.

At this time, since a communication line (normal wire) is used to transmit and receive a synchronous signal between a plurality of power control devices 131 to 134, a signal delay may occur due to resistance due to the length of the communication line, and also a malfunction or operation of the master. When it is not possible, there is a problem in that the operation of the slave is affected and a restart is required or the master is newly reassigned (see FIG. 6(b)).

Therefore, it is necessary to present a technique for solving this problem.

KR 10-1405243 B1

An object of the present invention is to provide a power control system and method capable of smoothing the total output power and lowering the frequency of occurrence of power peak values by dispersing the output power of each power control device simultaneously and not overlapping.

In order to solve the above problems, the present invention, a power control device for controlling the output power according to the control signal of the host controller when supplying power generated from the power supply unit and the power unit to the load-a plurality of the power control device is connected to the power supply unit- Including, but, the plurality of power control devices, using a unique code (ID) assigned to each, provides a power control system characterized in that the output operation at the time (Ps) according to the following equation (a) do.

[Equation A]

(여기서, Ps는 동작 시각, T는 상기 복수 전력제어기기 전부에 대한 제어주기 시간, n은 상기 복수 전력제어기기의 개수, ID_x는 상기 전력제어기기별 고유부호임)

(Where, Ps is the operation time, T is the control cycle time for all of the plurality of power control devices, n is the number of the plurality of power control devices, ID _x is a unique code for each power control device)

According to one embodiment, the plurality of power control devices, the operation order of the output power may be determined according to the unique code.

According to an embodiment, when the unique codes are not sequential, the upper controller sorts the unique codes in ascending or descending order, and outputs the multiple power controllers such that the unique codes have a predetermined interval in the sorted order. You can control the operation.

According to an embodiment, the control cycle time T may vary according to the number n of the plurality of power control devices.

According to an embodiment, the power control device is controlled such that the sum of the output powers of the entire plurality of power control devices does not exceed the maximum output target value (PV), and the maximum output target value (PV) is a unit target It is an integer (D) times the value (Fk), the unit target value (Fk) may be determined by the number (n) of the plurality of power control devices.

According to an embodiment, the power control device is controlled such that the sum of the output powers of the plurality of power control devices does not exceed the maximum output target value (PV), and the maximum output target value (PV) is a unit target If it is not an integer (D) times the value (Fk), reset to a value that does not exceed the maximum output target value (PV) among the integer (D) times of the unit target value (Fk), and finally the final maximum output target value (PVT) Determine, but the unit target value (Fk) may be determined by the number (n) of the plurality of power control devices.

According to one embodiment, the final maximum output target value (PVT) is a quotient obtained by dividing the unit target value (Fk) by the maximum output target value (PV), plus a unique code (ID). It can be determined by the size of the total power at the starting point of the output operation of the power control device 13 having a.

In addition, the present invention includes the step of controlling the output power according to the control signal of the host controller when the power control device supplies power generated from the power supply unit to the load, and a plurality of power control devices connected to the power supply unit are connected. In the power control method, the plurality of power control devices, using the unique code (ID) assigned to each, the power control comprising the step of controlling the output operation at the time (Ps) according to the equation (a) Provides a method.

In addition, the present invention provides a computer-readable recording medium for recording a computer program for executing the power control method.

According to the present invention, the output power of each power control device controlled by the upper level controller is simultaneously output and distributed without being superimposed, thereby smoothing the total output power and reducing the frequency of occurrence of the power peak value.

In addition, when the upper level controller controls a plurality of power control devices, delay or omission of a synchronization signal by one communication line does not affect other power control devices irrelevant.

In addition, even if the unique codes assigned to a plurality of power control devices are not sequentially or the number of power control devices is changed, the power control devices can be controlled without affecting the power transmitted to the load.

1 is a block diagram of a power control system.
2 is an exemplary view of a control signal form for determining the output amount of a power control device.
3 is a configuration diagram of a power control system in which a plurality of power control devices are connected in parallel.
4 and 5 are diagrams showing a relationship between output powers from a plurality of power control devices.
6 is a view showing a conventional synchronization method between a plurality of power control devices.
7 is a view showing power output from a plurality of power control devices according to an embodiment of the present invention.
8 and 9 are views showing output power for each power control device on the same time axis according to an embodiment of the present invention.
10 is a view showing a storage means included in the power control device according to an embodiment of the present invention.
11 and 12 are diagrams showing an example in which the sum of the total output powers exceeds the target maximum output.
13 is a view showing an example of limiting the maximum output of a power control device according to an embodiment of the present invention.
14 is a view for explaining a process of determining a unit target value according to an embodiment of the present invention.
15 and 16 are diagrams for explaining a process of determining a final maximum output target value according to an embodiment of the present invention.
17 is a view for explaining a process of resolving a unique code assigned to a plurality of power control devices according to an embodiment of the present invention when they are not aligned.
18 is a view for explaining a process of determining a control cycle time according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present invention, if it is determined that a detailed description of related known technologies may obscure the subject matter of the present invention, the detailed description will be omitted. In the drawings, parts not related to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification. In addition, throughout the specification, when a part “includes” a certain component, this means that other components may be further included instead of excluding other components, unless otherwise stated.

Power control system

3, the power control system 10 according to an embodiment of the present invention, the power supply unit 11 for supplying power, and when the power generated from the power supply unit 11 is supplied to the load 12 It may include a power control device 13 for controlling the output power according to the control signal of the host controller (14).

At this time, a plurality of power control devices 13 may be connected to the power supply unit 11 in parallel, and at least one load 12 may be connected to each of the plurality of power control devices 13.

In addition, the upper controller 14 may transmit a control signal to at least one power control device 13 to control the plurality of power control devices 13, and preferably, as shown in FIG. The upper controller 14 transmits a control signal to each of the plurality of power control devices 13 so that the delay or omission of the synchronization signal by the communication line does not affect other power control devices 13 irrelevant. Can be controlled.

At this time, each of the plurality of power control devices 13 may control the operation to output power at the time Ps according to Equation 1 below using the assigned unique code ID.

The unique code (ID) is for distinguishing a plurality of power control devices (131 to 134), which are controlled devices of the upper level controller (14), and the shape, type, length, etc. of the unique code (ID) are particularly limited. Although not, for example, the unique code (ID) may be a number.

[Equation 1]

Here, Ps indicates the power output operation time of each power control device (131 to 134), T indicates the time of the output control cycle for all of the plurality of power control devices (131 to 134), n is the upper controller (14) Points to the number of power control devices 131 to 134, which are controlled devices, and ID _x may indicate a unique code for each power control device 131 to 134, and may be an integer of 1 or more according to an embodiment.

As a result, the output powers of the respective power control devices 131 to 134 controlled by the upper level controller 14 are simultaneously output and distributed without overlapping, so that the total output power can be smoothed.

,

,

, ...,

의 시각에 전력을 출력할 수 함으로써, 전체적으로 각 전력제어기기(131~134)에서의 출력 전력이 분산되어 전력 피크값의 발생 빈도를 낮출 수 있다.For example, as shown in FIG. 7, when the unique code ID is an integer of 1 or more, unique codes from 1 to n may be assigned to each power control device 131 to 134, and each power control device (131~134) is 0,

,

,

, ...,

By outputting power at the time of, the output power of each power control device 131 to 134 is dispersed as a whole, so that the frequency of occurrence of the power peak value can be reduced.

If, the power control device 13 is a total of six (n = 6), the control cycle time (T) is 60 seconds, the unique code (ID) of each power control device 13 is 1, 2, 3 , 4, 5, 6, the power control device with ID 1 outputs power at 0, the power control device with ID 2 outputs power in 10 seconds, and the power control device with ID 3 is 20 seconds. The power control device with ID 4 outputs power in 30 seconds, the power control device with ID 5 outputs power in 40 seconds, and the power control device with ID 6 outputs power in 50 seconds. Can output If this represents the output power for each power control device (131 ~ 134) on the same time axis, it is as shown in FIG. If the output power for each power control device is superimposed on the same time axis, it is as shown in FIG. 9.

As a result, it is possible to minimize and smooth the overlap of the power supplied from the power supply unit 11 and the resulting peak power.

As shown in Equation 1, the unique code sets the operation sequence for each power control device (131 to 134), and the number (n) of all power control devices 13 and the time (T) of the entire control cycle are power Since the time (or position) to operate the output can be determined, the user can determine the operation sequence of the power control device 13 using the height of the unique code ID.

If the unique codes (IDs) assigned to each of the plurality of power control devices 13 are not sequential, an operation position or operation time between adjacent power control devices 13 that sequentially output by Equation 1 above. There is a problem that the gap increases.

Accordingly, the upper level controller 14 according to an embodiment of the present invention sorts the unique codes in ascending or descending order, and resets the unique codes so that the unique codes have a predetermined interval in the sorted order. can do. According to the reset unique code, the plurality of power control devices 13 can arrange the output operation interval of power within a predetermined time (T), so that the smoothness is increased and the overlap of power is minimized to solve the above problem. Can be.

Alternatively, the upper controller 14 arranges the unique codes in ascending or descending order if the unique codes are not sequential, and even if the unique codes are not reset, as described later, adjacent output operations of the power controllers 13 By fixing the interval ts, the output operation of the plurality of power control devices 13 can be controlled by being arranged in ascending or descending order (see FIG. 17).

On the other hand, for controlling the output operation of each power control device (131 ~ 134), each power control device (131 ~ 134) and / or the upper controller 14, the total number of power control devices (n), each power It may include a storage means (not shown) for storing at least one of the unique code (ID) for each controller and the control cycle time (T).

The information stored in the storage means can be directly input from the user, or when each of the power control devices 131 to 134 is provided with the storage means (see FIG. 10), the upper controller 14 or a separate terminal is provided. The above information can be entered through a communication network.

At this time, when a plurality of power control devices 13 are connected to the power supply unit 11, the connected power control devices 13 may not be identified, and as described above, the storage means may be a total power control device by an external input. The number (n) and/or the unique code (ID) for each power control device may be stored, but according to another embodiment, the upper level controller 14 sends a response request signal to a plurality of power control devices 13 in a broadcast manner. Sending, counting the number of received response signals to calculate the number (n) of power control devices, and sequentially assigning a random integer as a unique code (ID) corresponding to each power control device (13) connected to each node. It may be stored in the storage means of the controller 14 and/or each power control device 131 to 134.

Meanwhile, among the parameters of Equation 1, the control cycle time T may be set by a user's input, but the control cycle time T may be varied according to an embodiment.

When the operation times of the power outputs of the plurality of power control devices 131 to 134 within the control cycle time T are densely arranged, the powers output from the power control devices 131 to 134 for a predetermined period of time may be used. There is a problem that the peak value is high and power cannot be smoothed. On the contrary, when the operation times of the power outputs of the plurality of power control devices 131 to 134 are sparse, the conversion of energy transmitted to the load is also sparse, and light is more than intended. It may be dark or have little fever.

Therefore, it is preferable that the control cycle time T is variably set to increase or decrease as the number n of the plurality of power control devices 13 increases or decreases, and at this time, the interval between adjacent output operations of the power control devices 13 is increased. In advance, the control cycle time T may be determined based on the number n of power control devices.

The plurality of power control devices 13 may be n or nm depending on the environment or as required. For example, as shown in FIG. 18, when the timing of the output operation is sequentially arranged within a predetermined time T In the case of nm, a problem may arise in which the interval becomes longer.

Therefore, it is preferable to set the interval ts between adjacent output operations of the power control devices 13 so that the control cycle time T is variably set according to the number n of the power control devices. That is, the existing control cycle time T(= ts × n) can be changed to T´ = ts × (n-m).

On the other hand, the plurality of power control devices 131 to 134 from the upper controller 14 may receive control signals and output power according to the control signals. That is, the output ratio of the power control devices 131 to 134 may be determined according to the duty ratio of the control signal or the number of cycles of a constant waveform.

If, as shown in Figure 11, the control signal for each power control device (131 ~ 134) is a continuous output command, that is, the duty ratio is 100%, all power control devices (131 ~ 134) is 100% By outputting, the total output power cannot be smoothed and the peak value cannot be lowered. Of course, as illustrated in FIG. 12, even if all of the power control devices 131 to 134 do not output 100%, the target of the peak value to be reduced or lowered may not be achieved.

In order to solve this problem, in the part where the output power of the power control device 13 overlaps, a target PV is set for a maximum output (or peak value) regardless of the control signal, and each power control device 131 to It is desirable to limit the maximum output of 134) (see FIG. 13).

At this time, if the maximum output target value (PV) is set to limit the maximum output, the saving width (PF) can be reduced by the size (PF = 100-PV) minus the maximum output target value (PV) from the peak value of 100%. have. For example, when the maximum output target value (PV) is set to 70%, power saving may be 30%.

Here, the saving width (PF) may be a multiple of the unit target value (Fk) assuming uniform power saving of the plurality of power control devices 13, and the unit target value (Fk) is the number of power control devices (n) It can be determined by (see Fig. 14). Specifically, the unit target value Fk may be determined by Equation 2 below.

[Equation 2]

For example, if the number n of power control devices is 5, the saving width PF may be 20%, 40%, 60%, 80%, which is an integer multiple of the unit target value Fk.

Alternatively, when the maximum output target (PV) or the savings width (PF) is not an integer multiple of the unit target value (Fk) and is a sway value, the peak value can be lowered, but at some point, the unit goal is the savings width (PF). A phenomenon that is equal to the size (Ov = PF-Fk×kd) obtained by subtracting the size obtained by dividing the value (Fk) by the quotient (kd) of the value divided by the unit target value (Fk) from the saving width (PF) may occur.

For example, if the number (n) of power control devices is 5, and the maximum output target value (PV) is 70% (or PF = 30%), it is possible to save only 20% and reduce the preset savings Output power as low as 10% may occur than 30%.

That is, when limiting the maximum output by setting the maximum output target value (PV) as above, if the maximum output target (PV) value is not an integer multiple of the unit target value (Fk), the maximum output target (PV) set at any moment ), higher output power may occur.

Therefore, when the maximum output target value (PV) is between the D multiple of the unit target value (Fk) and the D+1 multiple (Fk×D <PV <Fk×(D+1)) (where D is less than 0 Greater than or less than n-1), the maximum output target value (PV) does not exceed the maximum output target value (PV) among integer multiples of the unit target value (Fk), that is, the integer D of the unit target value (Fk) It is desirable to remove the phenomenon in which the maximum power is higher than the set value at any moment by resetting it to a double.

For example, if the number (n) of power control devices is 5, Fk1 = 20%, Fk2 = 40%, Fk3 = 60%, Fk4 = 80% even if the maximum output target value (PV) is set to 70%. Finally, the maximum output target value (PVT) is preferably reset to 60% of them.

In other words, the final maximum output target value (PVT) is the value obtained by multiplying the unit target value (Fk) by the integer D, which is the quotient of the first set maximum output target value (PV) divided by the unit target value (Fk), that is, PVT = It can be Fk × D.

Meanwhile, according to an embodiment different from the above, when resetting the maximum output target value PV to the final maximum output target value PVT, Equation 1 may be used.

That is, the total power at the starting point (Ps _limit ) of the output operation of the power control device 13 having a unique code (ID) plus 1 plus D, which is the quotient of the maximum output target value (PV) divided by the unit target value (Fk). Since the size is equal to the final maximum output target value (PVT), the maximum peak value of the output power at the output terminal of the power supply unit 11 is (D+1)×M (where M is the maximum output power value for each power control device). It can be (see equation 3 below).

[Equation 3]

In other words, the final maximum output target value (PVT) may be (D+1)×M. For example, if the number n of power control devices 13 is 6 and the maximum output target value PV is the location of ID ₄ , the maximum peak value may be 4M (see FIGS. 15 and 16 ).

Power control method

In the power control method according to an embodiment of the present invention, when the power control device 12 supplies power generated from the power supply unit 11 to a load 12, the power control device 12 controls Including the step of controlling the output power, the plurality of power control devices 13, using a unique code (ID) assigned to each, to control the output operation at the time (Ps) according to the following equation (4) Can.

[Equation 4]

Here, Ps is an operation time, T is a control cycle time for all of the plurality of power control devices, n is the number of the plurality of power control devices, ID _x may indicate a unique code for each power control device.

As a result, the output powers of the respective power control devices 131 to 134 controlled by the upper level controller 14 are simultaneously output and distributed without overlapping, so that the total output power can be smoothed.

Accordingly, in the plurality of power control devices 131 to 134, an operation sequence of power output may be determined according to the unique code.

On the other hand, when the unique codes (IDs) are not sequential, the upper controller 14 sorts the unique codes (IDs) in ascending or descending order, and the plurality of the unique codes have a predetermined interval in the sorted order. It is possible to control the output operation of the power control device (131 ~ 134).

At this time, according to one embodiment, the unique codes are reset so that the unique codes have a predetermined interval in the order in which they are arranged, or according to another embodiment, the distance ts between adjacent output operations of the power control devices 13 is fixed, The output operation of the plurality of power control devices 13 may be controlled such that they can be arranged and output according to the ascending or descending order.

Meanwhile, the control cycle time T may be preset, but may be varied according to the number n of the plurality of power control devices. If the operation times of the power outputs of the plurality of power control devices 131 to 134 within the control cycle time T are densely or sparse, energy conversion supplied to the load 12 may also affect. , It is preferable that the control cycle time T is variably set to increase or decrease as the number n of the plurality of power control devices 13 increases or decreases, and the interval between adjacent output operations of the power control devices 13 is determined in advance. , And the control cycle time T based on the number n of power control devices.

Meanwhile, according to an embodiment, the power control device is controlled such that the sum of the output powers of the plurality of power control devices does not exceed the maximum output target value (PV), and the maximum output target value (PV) is It is an integer D of the unit target value Fk, and the unit target value Fk may be determined by the number n of the plurality of power control devices.

According to an embodiment, the power control device is controlled such that the sum of the output powers of the plurality of power control devices does not exceed the maximum output target value (PV), and the maximum output target value (PV) is a unit target If it is not an integer (D) times the value (Fk), reset to a value that does not exceed the maximum output target value (PV) among the integer (D) times of the unit target value (Fk), and finally the final maximum output target value (PVT) Determine, but the unit target value (Fk) may be determined by the number (n) of the plurality of power control devices.

On the other hand, according to an embodiment of the present invention, the final maximum output target value (PVT) is the maximum output target value (PV) divided by the unit target value (Fk) plus 1, the integer (D) It can also be determined by the magnitude of the total power at the starting point of the output operation of the power control device 13 having a unique code (ID).

However, a power control method having more or fewer steps than the above steps may be implemented, and since the description of the steps overlaps with those described above, descriptions of the steps will be omitted and replaced with those.

Computer readable recording media

The delivery mediation method according to an embodiment of the present invention described above may be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium.

The computer-readable recording medium may include program instructions, data files, data structures, or the like alone or in combination. The program instructions recorded on the computer-readable recording medium may be specially designed and configured for the present invention or may be known and available to those skilled in the computer software field. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical recording media such as CD-ROMs, DVDs, and magneto-optical media such as floptical disks. media), and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform processing according to the present invention, and vice versa.

The preferred embodiments of the present invention have been described above in detail with reference to the drawings. The description of the present invention is for illustration only, and those skilled in the art to which the present invention pertains will understand that it is possible to easily modify to other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the scope of the present invention is indicated by the claims, which will be described later, rather than by the detailed description, and all modified or modified forms derived from the meaning, scope, and equivalent concepts of the claims are included in the scope of the present invention. Should be interpreted.

10: Power control system
11: power supply
12, 121-124: load
13, 131~134: Power control device
135: storage means
14: upper controller

Claims (9)

Power supply; And
A power control device that controls output power according to a control signal of an upper controller when supplying power generated from the power supply to a load, wherein a plurality of the power control devices are connected to the power supply;
Including,
The plurality of power control devices, using the unique code (ID) assigned to each, the power control system characterized in that the output operation at the time (Ps) according to the equation (a).
[Equation A]

(Where, Ps is the operation time, T is the control cycle time for all of the plurality of power control devices, n is the number of the plurality of power control devices, ID _x is a unique code for each power control device) According to claim 1,
The plurality of power control devices,
Power control system, characterized in that the operation sequence of the power output is determined according to the unique code. According to claim 2,
When the eigencodes are not sequential,
The high-order controller, the power control system, characterized in that to sort the unique code in ascending or descending order, and to control the output operation of the plurality of power control devices such that the unique codes have a predetermined interval in the sorted order. According to claim 1,
The control cycle time (T), the power control system, characterized in that variable according to the number (n) of the plurality of power control devices. According to claim 1,
The power control device,
It is controlled so that the sum of the output powers of the plurality of power control devices does not exceed the maximum output target value (PV),
The maximum output target value (PV) is an integer (D) times the unit target value (Fk), wherein the unit target value (Fk) is a power characterized in that it is determined by the number (n) of the plurality of power control devices Control system. According to claim 1,
The power control device,
It is controlled so that the sum of the output powers of the plurality of power control devices does not exceed the maximum output target value (PV),
If the maximum output target value (PV) is not an integer (D) times the unit target value (Fk), a value not exceeding the maximum output target value (PV) of the integer (D) times the unit target value (Fk) A power control system characterized in that the final maximum output target value (PVT) is determined by resetting to, but the unit target value (Fk) is determined by the number (n) of the plurality of power control devices. The method of claim 6,
The final maximum output target value (PVT) is,
The total power at the starting point of the output operation of the power control device 13 having a unique code (ID) plus 1 to the integer (D), which is the quotient of the maximum target value (PV) divided by the unit target value (Fk). Power control system characterized in that determined by the size. The power control device, when supplying power generated from the power supply unit to the load, controlling the output power according to the control signal of the host controller, wherein a plurality of power control devices connected to the power supply unit are connected;
In the power control method comprising a,
The plurality of power control devices, using the unique code (ID) assigned to each, to control the output operation at the time (Ps) according to the equation (b);
Power control method comprising a.
[Equation I]

(Where, Ps is the operation time, T is the control cycle time for all of the plurality of power control devices, n is the number of the plurality of power control devices, ID _x is a unique code for each power control device) A computer-readable recording medium for recording a computer program for executing the power control method according to claim 8.

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