UPS system

Abstract

To provide a technique capable of reducing a width dimension when lining boards in a UPS system.SOLUTION: A UPS system comprises: an input board into which power is input from an external part; an output board that supplies the power to a load device at the external part; and a UPS device into which the power is input from the input board and which outputs the power to the output board. The UPS device comprises a plurality of conversion boards and a UPS interface board. The plurality of conversion boards and the UPS interface board are provided side by side in one direction. The UPS interface board is electrically connected to the input board and the plurality of conversion boards, and is constructed so that the power is input to it from the input board. Here, one of the input board and the output board is arranged on a back surface side of the UPS device. The other of the input board and the output board is arranged on a side surface side of the UPS device, or the input board and the output board are arranged on the back surface side of the UPS device.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a UPS system. [Background technology]

[0002] There is known an Uninterruptible Power Supply (UPS) system that includes a UPS device and is capable of supplying power during a power outage, etc. Patent Document 1 discloses this type of system.

[0003] Patent Document 1 states that "uninterruptible power supplies 1, 3, 2, 4 are installed with the rear sides of uninterruptible power supply panel containers 1a, 3a facing each other and the rear sides of uninterruptible power supply panel containers 2a, 4a facing each other, and wiring connection spaces 13, 24 are secured to electrically connect uninterruptible power supply panel containers 1a-3a, 2a-4a to each other, and uninterruptible power supply 5 and output panel 8 are installed with the rear sides of uninterruptible power supply panel container 5a and output panel container 8a facing each other, and wiring connection space 58 is secured to electrically connect uninterruptible power supply panel container 5a and output panel container 8a to each other."

[0004] Patent Document 1 also states that "each of the uninterruptible power supply main units 1b to 5b includes, as shown in FIG. 3, a converter CN, an inverter IN, a chopper CP, first, second and third capacitors C1, C2, C3, first, second and third reactors L1, L2, L3, first and second circuit breakers CB1, CB2, first, second and third contactors M1, M2, M3, a bypass circuit BP, and first and second switching elements S1, S2." [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2012-249353 A Summary of the Invention [Problem to be solved by the invention]

[0006] In a UPS system, the width dimension becomes large when the panels are arranged side by side, and the installation location may be limited from the viewpoint of installation space, for example. Therefore, there is a need to reduce the width dimension when the panels are arranged side by side. [Means for solving the problem]

[0007] According to the present invention, the following UPS system is provided as an example. That is, the UPS system includes an input board to which power is input from the outside, an output board to supply power to an external load device, and a UPS device to which power is input from the input board and which outputs power to the output board. This UPS device includes a plurality of converter boards and a UPS interface board. The plurality of converter boards and the UPS interface board are arranged in one direction. The UPS interface board is electrically connected to the input board, the output board, and the plurality of converter boards, and is configured to input power from the input board. One of the input board or the output board is disposed on the rear side of the UPS device, and the other is disposed on the side of the UPS device. Also, a UPS system is provided that includes the same input board, output board, and UPS device as above, and both the input board and the output board are disposed on the rear side of the UPS device. Effect of the Invention

[0008] According to the present invention, by configuring a UPS device using a UPS interface board that is arranged side by side on a plurality of converter boards and connected in parallel to the plurality of converter boards, and receives power from an input board, it is possible to simplify the structure of the conversion board in the UPS device, thereby making it possible to reduce the width dimension when the boards are arranged in a row. Note that the problems, configurations, and effects other than those described above will become clear from the following description of the embodiment of the invention. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an example of a side-by-side configuration of a UPS system. [Diagram 2]FIG. 2 is a diagram for explaining the electrical structure of the UPS system. [Diagram 3] FIG. 1 is a diagram showing an example of a conventional structure. [Figure 4] FIG. 1 is a diagram illustrating an example of the structure of a UPS device. [Diagram 5] FIG. 1 is a diagram illustrating an example of the structure of a UPS device. [Figure 6] FIG. 1 is a diagram showing an example of a conventional side-by-side panel configuration. [Figure 7] FIG. 1 is a diagram illustrating an example of a side-by-side configuration of a UPS system. [Figure 8] FIG. 1 is a diagram illustrating an example of a side-by-side configuration of a UPS system. [Figure 9] FIG. 1 is a diagram illustrating an example of a side-by-side configuration of a UPS system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The embodiment is an example for explaining the present invention, and appropriate omissions and simplifications are made for clarity of explanation. The present invention can be implemented in various other forms. Unless otherwise specified, each component may be singular or plural. In order to facilitate understanding of the invention, the position, size, shape, range, etc. of each component shown in the drawings may not represent the actual position, size, shape, range, etc. Therefore, the present invention is not necessarily limited to the position, size, shape, range, etc. disclosed in the drawings. When there are multiple components having the same or similar functions, they may be described by using the same reference numerals with different subscripts, or when there is no need to distinguish between these multiple components, the subscripts may be omitted.

[0011] First, an overview of a UPS system will be described with reference to Fig. 1. A UPS system is a system capable of supplying power during a power outage or the like. The UPS system 1a comprises an input panel 2, an output panel 4, and a UPS device 3. The input panel 2 is a panel into which power is input from the outside, and in this example, is disposed at a position on the rear side of the UPS device 3, with the rear side of the input panel 2 facing the rear side of the UPS device 3. The output panel 4 is a panel that outputs power to an external load device, and in this example, is disposed on the side of the UPS device 3 (more specifically, on the side of the UPS interface panel of the UPS device 3).

[0012] The UPS device 3 is, for example, a device that stores power during normal operation and outputs the stored power during a power outage. In this embodiment, the UPS device 3 includes a plurality of converter boards 31 and a UPS interface board 37 that inputs and outputs power to and from the outside, and these boards (31, 37) are arranged in one direction. Specific structural examples of the input board 2, output board 4, and UPS device 3 will be described in detail later.

[0013] In this embodiment, each panel (2, 4, 31, 37) has a door on the front side for accessing the inside. Therefore, a user who uses the UPS system can open the door to access the inside and perform tasks such as predetermined operations and maintenance. In the UPS system, the door of each panel faces the front side, which increases workability.

[0014] Next, an example of the electrical configuration of a UPS system will be described with reference to FIG.

[0015] The input panel 2 is configured to supply power from an AC power source 12 external to the UPS system 1a to the UPS device 3, and in this embodiment, includes, in order from the AC power source 12 side, a circuit breaker 21 and a transformer 22. The circuit breaker 21 is a switch that switches between supplying and not supplying power. For example, when power equal to or exceeds a predetermined value flows, the circuit breaker 21 cuts off the supply of power. The transformer 22 is a device that adjusts the voltage of the AC power to an appropriate value. The input panel 2 adjusts the AC power input from the AC power source 12 with the transformer 22 and supplies it to the UPS device 3. The input panel 2 may be configured, for example, as one panel, or may be configured as multiple panels.

[0016] As described above, the UPS device 3 includes a plurality of converter boards 31 and a UPS interface board 37. Here, the UPS interface board 37 is connected to the input board 2 and the output board 4, and is a board for inputting and outputting power in the UPS device 3. In this embodiment, the UPS interface board 37 is connected in parallel to each converter board 31, and can output power to each converter board 31.

[0017] Each converter board 31 includes a converter 32, an inverter 33, and a chopper 34. Under normal circumstances, the converter board 31 supplies DC power to the inverter 33 while charging the storage battery 13 with the converter 32 (more specifically, an AC / DC converter). Then, the converter board 31 converts the DC power into AC current of a predetermined voltage and frequency with the inverter 33 (i.e., converts the DC power into more stable AC power with the inverter 33), and outputs it to the UPS interface board 37.

[0018] The converter board 31 supplies power to the storage battery 13 through a chopper 34 (more specifically, a chopper circuit). Here, when power is supplied from the AC power source 12, the chopper 34 operates as a step-down chopper, and the storage battery 13 is charged through the chopper 34. The converter board 31 can also supply power from the storage battery 13 to the inverter 33 through the chopper 34. That is, during a power outage, the chopper 34 operates as a step-up chopper, and the converter board 31 supplies power to the inverter 33 through the chopper 34.

[0019] The storage battery 13 can be installed at an appropriate location. For example, the storage battery 13 may be installed below the converter board 31 (underground, in the ground, etc.).

[0020] The UPS interface panel 37 includes an input circuit breaker 38 and a bypass switch 39. The input circuit breaker 38 is a device that opens and closes an electric circuit. For example, when power equal to or greater than a predetermined value flows from the input panel 2, the input circuit breaker 38 cuts off the supply of power. The bypass switch 39 is provided on an electric circuit that supplies the input power to the output panel 4 without supplying it to the converter panel 31. The bypass switch 39 is a switch that switches this electric circuit, and is used when switching operation modes, as described later.

[0021] In this embodiment, the UPS interface board 37 is disposed at an end (more specifically, at the end on the output board 4 side) of the UPS device 3. The UPS device 3 and the input board 2 are connected via an electric path between the rear side of the UPS interface board 37 and the rear side of the input board, and the UPS device 3 and the output board 4 are connected via an electric path on the side of the UPS interface board 37. This shortens the path between the input board 2 and the output board 4 when the bypass switch 39 is conductive. In addition, the converter boards 31 are disposed side by side and connected in parallel, thereby increasing the rated capacity.

[0022] The output panel 4 is configured to supply power to a load device 11 external to the UPS system, and in this embodiment includes an output circuit breaker 41 and an output branch switch 42. The output circuit breaker 41 is a device that opens and closes an electric circuit. For example, when power equal to or greater than a predetermined value flows from the UPS device 3, the output circuit breaker 41 cuts off the supply of power. The output branch switch 42 is disposed downstream of the output circuit breaker 41, and is a device that opens and closes each branched electric circuit.

[0023] Next, the operation modes of the UPS system will be described with reference to the current paths shown in Fig. 2. Here, the UPS system 1a can be operated in any one of a normal operation mode, a power outage operation mode, and a bypass operation mode.

[0024] The normal operation mode is an operation mode in which power can be supplied from the AC power source 12, and during normal operation, power is supplied from the input panel 2 to the output panel 4 through the converter 32 and inverter 33. At the same time, the storage battery 13 is charged through the chopper 34. In the normal operation mode, the bypass switch 39 cuts off the electrical path, and current flows through the converter panel 31.

[0025] The power failure operation mode is an operation mode during a power failure when power cannot be supplied from the AC power source 12, and during power failure operation, power is supplied from the storage battery 13 to the output board 4 via the chopper 34 and inverter 33.

[0026] In the bypass operation mode, the bypass switch 39 does not cut off the electric path, and a current flows through this electric path. That is, the bypass operation mode is an operation mode in which power is supplied from the input panel 2 to the output panel 4 through this electric path, and power is not supplied to the converter panel 31. The bypass operation mode is used when the storage battery 13 is not being charged.

[0027] Next, a comparison with an example of a conventional configuration will be described with reference to Fig. 3. Note that the same description will be omitted.

[0028] Fig. 3 shows an example of a conventional configuration of a UPS device. This UPS device 3p includes a plurality of boards 31p, each of which includes a converter 32, an inverter 33, a chopper 34, an input circuit breaker 38p, and a bypass switch 39p, and the boards 31p are arranged in one direction.

[0029] 2, the UPS device 3 is configured to directly supply external power to one board (UPS interface board 37) and supply power to another board 31 (converter board) connected in parallel to the board 37 via the board 37. Also, the input circuit breaker and switching device are omitted in the board 31 connected in parallel.

[0030] In other words, in the conventional configuration, each set of converters (converter 32, inverter 33, chopper 34) was equipped with a circuit breaker 38p and a bypass switch 39p, but by consolidating these onto a single panel, simplification and miniaturization are achieved, and the width dimension of the UPS device can be reduced.

[0031] Next, an example of a modification of the UPS device will be described with reference to Figures 4 and 5. Note that a description of similar configurations will be omitted.

[0032] The UPS device shown in FIG. 2 is configured so that power is output to the output board 4 from the end on the UPS interface board 37 side, whereas the example shown in FIG. 4 is configured so that power is output to the output board from the end on the converter board 31 side.

[0033] The configuration of Fig. 4 has the effect of simplifying the structure of the UPS device, reducing its size, and reducing the width of the UPS device, similar to the configuration shown in Fig. 2. However, compared to the case of Fig. 2, the path in which the bypass switch 39 is arranged is longer.

[0034] In the UPS device shown in Fig. 2, the UPS interface board 37 is provided at one end of the UPS device, but in the example shown in Fig. 5, the UPS interface board 37 is provided between the converter boards 31. As an example, the UPS interface board 37 is disposed in the center of the row-panel structure.

[0035] The configuration of FIG. 5, like the configuration shown in FIG. 2, has the effect of simplifying the structure of the UPS device, realizing a reduction in size, and reducing the width dimension of the UPS device.

[0036] Next, a comparison with an example of a conventional side-by-side panel configuration will be described with reference to Figures 6 and 7. As shown in Figure 6, the conventional side-by-side panel configuration is, for example, a side-by-side arrangement, but as shown in Figure 7, the side-by-side panel configuration of the present invention is, for example, not a side-by-side side-by-side panel configuration, in which the input panel 2 is disposed on the rear side of the UPS device 3. Therefore, the width dimension is reduced.

[0037] In addition, in a UPS system, it is necessary to pass the wiring between the input panel and the UPS interface panel outside or inside the panel of the UPS device. If this wiring is passed outside the panel of the UPS device, a bus duct 51 for insulation is required, which leads to high costs. If this wiring is passed inside the panel of the UPS device, space is required to pass the copper bar 52, etc., and the dimensions of the panel are increased. Here, as shown in FIG. 7, in the side-by-side panel configuration according to the present invention, the back of the UPS device 3 and the back of the input panel 2 are arranged facing each other, so that even if the wiring is passed between the input panel and the UPS interface panel, the increase in the dimensions of the panel in the width direction can be suppressed.

[0038] Next, an example of another side-by-side panel configuration according to the present invention will be described with reference to Figs.

[0039] As shown in FIG. 8, the UPS system 1b may have a side-by-side panel configuration in which an input panel 2 is arranged on the rear side of the UPS device 3, an output panel 4 is arranged on the side of the UPS device 3, and the output panel 4 is not arranged on the side of the input panel 2.

[0040] 9, the UPS system 1c may have a serial configuration in which the input panel 2 and the output panel 4 are disposed on the rear side of the UPS device 3. Here, from the viewpoint of facilitating the connection between the UPS device 3 (specifically, the UPS interface panel) and the input panel 2, it is preferable that the input panel 2 is disposed on the rear side of the UPS interface panel.

[0041] According to the above description, the following UPS system is provided as an example. That is, the UPS system (1a, 1b) includes an input board 2 to which power is input from the outside, an output board 4 that supplies power to an external load device, and a UPS device 3 that receives power from the input board 2 and outputs power to the output board 4. Here, the UPS device 3 includes a plurality of converter boards 31 and a UPS interface board 37, and the plurality of converter boards 31 and the UPS interface board 37 are arranged in one direction. The UPS interface board 37 is electrically connected to the input board 2 and the plurality of converter boards 31, and is configured to receive power from the input board 2. The input board 2 is arranged on the rear side of the UPS device 3, and the output board 4 is arranged on the side of the UPS device 3.

[0042] In this way, in the UPS device, a UPS interface panel, which receives power from an input panel and outputs power to a converter panel connected in parallel, is placed alongside the converter panel, and the circuit breakers, bypass circuits, and equipment for controlling the bypass circuits provided on each converter panel are all integrated into the UPS interface panel. This gives the converter panel a simple structure that does not include the circuit breakers, etc., making it possible to reduce the width dimension.

[0043] As another example, a UPS system 1c having a configuration similar to the above example and in which the input board 2 and the output board 4 are arranged on the rear side of the UPS device 3 may be provided.

[0044] Even in this case, the width dimension can be reduced from the same viewpoint as in the above example.

[0045] Although the embodiments and the like have been described above, the present invention is not limited to the above-described contents, and includes various modified examples and equivalent configurations within the spirit of the appended claims. For example, the above-described contents have been described in detail to explain the present invention in an easy-to-understand manner, and the present invention is not necessarily limited to those having all of the described configurations. In addition, for example, some of the configurations may be added, deleted, or replaced with other configurations.

[0046] For example, an example in which the input panel 2 is arranged on the rear side of the UPS device 3 has been described, but a UPS system in which the input panel 2 and the output panel 4 are arranged in reverse, and the output panel 4 is arranged on the rear side of the UPS device 3, and the input panel 2 is arranged on the side of the UPS device 3 may be provided. Even with such a configuration, the structure of the UPS device can be simplified and the width dimension can be reduced. In addition, in the UPS device 3, the UPS interface panel 37 is arranged on one end side, the UPS device 3 and the output panel 4 are connected via an electric path on the rear side of the UPS interface panel 37 and the rear side of the output panel 4, and the UPS device 3 and the input panel 2 are connected via an electric path on the side side of the UPS interface panel 37, thereby shortening the path between the input panel 2 and the output panel 4 that are conductive via the bypass switch 39. However, in this configuration, it is possible that the dimensions of the panel in the width direction will increase due to the wiring between the input panel and the UPS interface panel.

[0047] In the UPS system, an operation unit used by a user may be provided in the panel (2, 4, 31, 37), and the user may manually operate the operation unit to control the device. This operation unit may include, for example, an ON / OFF switch.

[0048] The device may be configured to operate automatically depending on the situation. For example, an ammeter may be provided and the device may be configured to operate automatically depending on the current value.

[0049] The UPS system may also be provided with a processing unit, which may automatically control the device. This processing unit may be appropriately configured using, for example, a processor, a storage device for storing data such as programs, etc. The UPS system may also be appropriately provided with sensors and the like used for this automatic control.

[0050] For example, the UPS interface panel 37 may be configured to include at least one of the input circuit breaker 38 or the bypass switch 39. If the bypass switch 39 is omitted, it is possible to omit the electric path that supplies the input power to the output panel 4 without supplying it to the converter panel 31, and the UPS device 3 performs normal operation or power outage operation.

[0051] The configuration of the converter board 31 may be changed as appropriate as long as the storage battery 13 can be appropriately charged and the power of the storage battery 13 can be appropriately output during a power outage. In the converter board 31, for example, appropriate components may be omitted from the converter 32, the inverter 33, and the chopper 34. Furthermore, components that can be omitted from each converter board 31 and arranged on the interface board 37 may be arranged on the interface board 37 to reduce the width dimension of the entire UPS device.

[0052] It is sufficient that the input board 2, the UPS device 3, and the output board 4 can be appropriately connected, and for example, the input board 2 (or the output board 4) can be arranged close to the rear side of the UPS device 3. Here, the arrangement interval on the rear side of the UPS device 3 can be, for example, 5 mm.

[0053] The UPS device 3 only needs to be able to input and output power between the input board 2 and the output board 4 via the UPS interface board 37, and the position of the wiring connecting the input board 2 and the output board 4 can be determined appropriately. [Explanation of symbols]

[0054] 1a UPS system 1b UPS system 1c UPS system 2 Input Panel 3 UPS Device 4 Output Panel

Claims

1. an input panel into which power is input from an external source; an output board for supplying power to an external load device; a UPS device that receives power from the input board and outputs power to the output board; Equipped with The UPS device is A plurality of converter boards and a UPS interface board are provided, The plurality of converter boards and the UPS interface board include: They are arranged in one direction, The UPS interface board is The power supply unit is electrically connected to the input board and the plurality of converter boards, and receives power from the input board; The input board is disposed on the rear side of the UPS device, and the output board is disposed on the side of the UPS device. A UPS system characterized by:

2. 2. The UPS system of claim 1, The UPS interface board includes a bypass switch for opening and closing an electric circuit for outputting power input from the input board to the output board without supplying the power to the converter board. A UPS system characterized by:

3. 3. The UPS system according to claim 2, The UPS interface board is provided on one end side of the one direction, The UPS device and the input board are connected via an electrical path between the rear side of the UPS interface board and the rear side of the input board, The UPS device and the output board are connected via an electrical path on the side of the UPS interface board. A UPS system characterized by:

4. an input panel into which power is input from an external source; an output board for supplying power to an external load device; a UPS device that receives power from the input board and outputs power to the output board; Equipped with The UPS device is A plurality of converter boards and a UPS interface board are provided, The plurality of converter boards and the UPS interface board include: They are arranged in one direction, The UPS interface board is The power supply unit is electrically connected to the input board and the plurality of converter boards, and receives power from the input board; The output board is disposed on the rear side of the UPS device, and the input board is disposed on the side of the UPS device. A UPS system characterized by:

5. 5. The UPS system according to claim 4, The UPS interface board includes a bypass switch for opening and closing an electric circuit for outputting power input from the input board to the output board without supplying the power to the converter board. A UPS system characterized by:

6. 6. The UPS system according to claim 5, The UPS interface board is provided on one end side of the one direction, The UPS device and the output board are connected via an electrical path between the rear side of the UPS interface board and the rear side of the output board, The UPS device and the input board are connected via an electrical path on the side of the UPS interface board. A UPS system characterized by:

7. an input panel into which power is input from an external source; an output board for supplying power to an external load device; a UPS device that receives power from the input board and outputs power to the output board; Equipped with The UPS device is A plurality of converter boards and a UPS interface board are provided, The plurality of converter boards and the UPS interface board include: They are arranged in one direction, The UPS interface board is The power supply unit is electrically connected to the input board and the plurality of converter boards, and receives power from the input board; The input board and the output board are disposed on the rear side of the UPS device. A UPS system characterized by:

8. 8. The UPS system according to claim 7, The UPS interface board includes a bypass switch for opening and closing an electric circuit for outputting power input from the input board to the output board without supplying the power to the converter board. A UPS system characterized by:

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