Power generation system and measurement system

Abstract

We provide power generation and measurement systems that enable stable operation. [Solution] According to the embodiment, the power generation system includes a power generation unit, a power conversion unit, a first detection element, a second detection element, and a detection unit. The power conversion unit is configured to convert the power generated by the power generation unit. The first distance between the first detection element and the power conversion unit is shorter than the second distance between the first detection element and the power generation unit. The detection unit is configured to output an output signal based on a first detection signal obtained from the first detection element and a second detection signal obtained from the second detection element.

Description

Technical Field

[0001] Embodiments of the present invention relate to a power generation system and a measurement system.

Background Art

[0002] In a power generation system, for example, by appropriately detecting an abnormality, appropriate maintenance is promoted and stable operation is easily obtained.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Embodiments of the present invention provide a power generation system and a measurement system capable of stable operation.

Means for Solving the Problems

[0005] According to an embodiment of the present invention, a power generation system includes a power generation unit, a power conversion unit, a first detection element, a second detection element, and a detection unit. The power conversion unit is configured to convert the power generated by the power generation unit. A first distance between the first detection element and the power conversion unit is shorter than a second distance between the first detection element and the power generation unit. The detection unit is configured to output an output signal based on a first detection signal obtained from the first detection element and a second detection signal obtained from the second detection element.

Brief Description of the Drawings

[0006] [Figure 1] FIG. 1 is a schematic diagram illustrating a power generation system according to a first embodiment. [Figure 2]Figures 2(a) to 2(c) are schematic diagrams illustrating the operation of the power generation system according to the first embodiment. [Figure 3] Figures 3(a) to 3(c) are schematic diagrams illustrating the operation of the power generation system according to the first embodiment. [Figure 4] Figure 4 is a schematic diagram illustrating a power generation system according to the first embodiment. [Figure 5] Figure 5 is a schematic diagram illustrating a power generation system according to the first embodiment. [Figure 6] Figure 6 is a schematic diagram illustrating a power generation system according to the first embodiment. [Figure 7] Figure 7 is a schematic diagram illustrating a power generation system according to the first embodiment. [Figure 8] Figure 8 is a schematic diagram illustrating a power generation system according to the first embodiment. [Figure 9] Figure 9 is a schematic diagram illustrating a power generation system according to the first embodiment. [Figure 10] Figure 10 is a schematic diagram illustrating a power generation system according to the first embodiment. [Figure 11] Figure 11 is a schematic diagram illustrating a power generation system according to the first embodiment. [Figure 12] Figures 12(a) to 12(c) are schematic diagrams illustrating the operation of the power generation system according to the first embodiment. [Figure 13] Figure 13 is a schematic diagram illustrating a power generation system according to the first embodiment. [Modes for carrying out the invention]

[0007] Embodiments of the present invention will be described below with reference to the drawings. In this specification and in each figure, elements similar to those described above are denoted by the same reference numerals with respect to previously shown figures, and detailed explanations are omitted as appropriate.

[0008] (First Embodiment) Figure 1 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in FIG. 1, the power generation system 110 according to the embodiment includes a power generation unit 20, a power conversion unit 10, a first detection element 31, a second detection element 32, and a detection unit 70.

[0009] The power conversion unit 10 is configured to convert the power generated by the power generation unit 20. The power conversion unit 10 may include, for example, a switching circuit 11. The switching circuit 11 is configured to convert the power generated by the power generation unit 20. The power conversion unit 10 may correspond to at least a part of a PCS (Power Conditioning System), for example.

[0010] The first detection element 31 is provided, for example, near the power conversion unit 10. For example, the distance (first distance) between the first detection element 31 and the power conversion unit 10 is shorter than the distance (second distance) between the first detection element 31 and the power generation unit 20.

[0011] For example, a first detection signal Sd1 is output from the first detection element 31. A second detection signal Sd2 is output from the second detection element 32. These detection signals are supplied to the detection unit 70.

[0012] The detection unit 70 is configured to output an output signal Sx1 based on the first detection signal Sd1 obtained from the first detection element 31 and the second detection signal Sd2 obtained from the second detection element 32.

[0013] For example, the first detection signal Sd1 corresponds to a first electromagnetic signal E1 from the power conversion unit 10. For example, the second detection signal Sd2 corresponds to a second electromagnetic signal E2 from the power generation unit 20 and the first electromagnetic signal E1. The second detection signal Sd2 is easily affected by the power conversion unit 10.

[0014] The output signal Sx1 is obtained by processing, for example, the first detection signal Sd1 and the second detection signal Sd2. The output signal Sx1 may be, for example, based on the difference between these signals or the like. In such an output signal Sx1, the mutual influence between the power generation unit 20 and the power conversion unit 10 is suppressed. For example, the influence of the power conversion unit 10 is suppressed, and the state of the power generation unit 20 can be stably grasped with high accuracy. For example, appropriate maintenance is possible. A power generation system capable of stable operation can be provided. The state of the power generation unit 20 includes, for example, faults or deterioration.

[0015] The processing of the first detection signal Sd1 and the second detection signal Sd2 may include, for example, comparison processing or the like. For example, the difference between the first detection signal Sd1 and the second detection signal Sd2 is detected. For example, the output signal Sx1 may be based on the difference between the first detection signal Sd1 and the second detection signal Sd2. In such an output signal Sx1, the mutual influence between the power generation unit 20 and the power conversion unit 10 is suppressed. Examples of the processing will be described later.

[0016] In the first reference example, the first detection element 31 is provided near the power conversion unit 10, and the second detection element 32 is provided near the power generation unit 20. In the first reference example, the state of the power conversion unit 10 or the power generation unit 20 is detected, judged, or diagnosed by the first detection signal Sd1 obtained from the first detection element 31 or the second detection signal Sd2 obtained from the second detection element 32. In the first reference example, the mutual influence is likely to become noise. In the first reference example, due to the influence of noise, the accuracy of detecting the state of the power conversion unit 10 or the power generation unit 20 is likely to be low. It is difficult to obtain an accurate judgment result (diagnosis result).

[0017] As described above, in the embodiment, the output signal Sx1 based on both the first detection signal Sd1 and the second detection signal Sd2 is output. Thereby, the mutual influence is suppressed. For example, noise is suppressed. The state of at least one of the power conversion unit 10 and the power generation unit 20 can be detected with high accuracy. An accurate judgment result (diagnosis result) is easily obtained.

[0018] As shown in the example in Figure 1, the second detection element 32 may be located near the power generation unit 20. For example, the distance between the second detection element 32 and the power generation unit 20 (third distance) is shorter than the distance between the second detection element 32 and the power conversion unit 10 (fourth distance). By locating the second detection element 32 near the power generation unit 20, the influence from the power conversion unit 10 can be further suppressed.

[0019] In this embodiment, the state of the power conversion unit 10 may be detected by an output signal Sx1 based on a first detection signal Sd1 and a second detection signal Sd2. For example, the influence of the power generation unit 20 can be suppressed, and the state of the power conversion unit 10 can be grasped with high accuracy and stability.

[0020] As shown in Figure 1, in this example, the detection unit 70 includes a first circuit 71 and a processing circuit 75. The first circuit 71 is configured to generate a first signal Sg1 obtained by processing a first detection signal Sd1 and a second signal Sg2 obtained by processing a second detection signal Sd2. The processing circuit 75 is configured to generate an output signal Sx1 by processing the first signal Sg1 and the second signal Sg2.

[0021] For example, the first detection signal Sd1 is converted using AD conversion to obtain the first signal Sg1. For example, the second detection signal Sd2 is converted using AD conversion to obtain the second signal Sg2. The intensity of the first detection signal Sd1 may be adjusted to obtain the first signal Sg1. The intensity of the second detection signal Sd2 may be adjusted to obtain the second signal Sg2. The first signal Sg1 and the second signal Sg2 simplify signal processing. Thus, the processing in the first circuit 71 may include at least one of AD conversion and amplitude adjustment.

[0022] For example, the detection unit 70 may be configured to derive an output signal Sx1 by processing a first signal Sg1 based on a first detection signal Sd1 and a second signal Sg2 based on a second detection signal Sd2 in a first process. The first process may include, for example, at least one of a comparison process and a cancellation process.

[0023] The comparison process includes deriving the result of comparing the first signal Sg1 and the second signal Sg2. For example, the comparison process may include deriving the difference between the first signal Sg1 and the second signal Sg2. For example, the output signal Sx1 may include the result of the comparison. For example, the output signal Sx1 may depend on the difference between the first signal Sg1 and the second signal Sg2.

[0024] The cancellation process includes removing at least a portion of the second signal component contained in the second signal Sg2 using at least a portion of the first signal Sg1. For example, the output signal Sx1 may include the signal component after the removal. The cancellation process may also include removing at least a portion of the component contained in the first signal Sg1 using at least a portion of the second signal Sg2.

[0025] The first process may include the following correlation process. The correlation process includes deriving at least one component of the first signal Sg1 and the second signal Sg2. In the correlation process, the correlation value between the first signal Sg1 and the second signal Sg2 is less than a threshold for at least some components. By detecting components with small correlation values, the state of at least one of the power generation unit 20 and the power conversion unit 10 can be detected with high accuracy.

[0026] As described above, the output signal Sx1 may depend on the state (first state) of the power generation unit 20. The first state includes at least one of a failure of the power generation unit 20 and deterioration of the power generation unit 20.

[0027] As shown in Figure 1, the detection unit 70 may include a processor 78. The processor 78 may be configured to output information Id1 regarding the first state based on the output signal Sx1. Information Id1 may include, for example, a notification or an alert. The processor 78 may determine, for example, a failure or deterioration of the power generation unit 20. Information Id1 may include the result of the determination regarding the failure or deterioration. In an embodiment, the devices included in the power generation system 110 (e.g., the power generation unit 20) may be automatically controlled or adjusted based on at least one of the output signal Sx1 and information Id1. Control may include, for example, stopping operation. Adjustment may include, for example, reducing the amount of power generated.

[0028] As shown in Figure 1, the first detection element 31 may include a probe 31p. The probe 31p may be in contact with the power conversion unit 10. In this case, the probe 31p acquires an electromagnetic signal from the power conversion unit 10 by conduction. Alternatively, the probe 31p may not be in contact with the power conversion unit 10.

[0029] The second detection element 32 may include an antenna 32a. The antenna 32a acquires electromagnetic signals propagating in the space around it. These electromagnetic signals include, for example, a first electromagnetic signal E1 from the power conversion unit 10 and a second electromagnetic signal E2 from the power generation unit 20. The antenna 32a enables the detection of these electromagnetic signals with high accuracy and efficiency.

[0030] When the power conversion unit 10 includes a switching circuit 11, a high-intensity electromagnetic signal (first electromagnetic signal E1) is likely to be generated from the switching circuit 11 during power conversion. This high-intensity electromagnetic signal from the switching circuit 11 becomes noise in detecting the state of the power generation unit 20. In this embodiment, even when the power conversion unit 10 includes a switching circuit 11, the effects of noise can be suppressed, and the state of the power generation unit 20 can be detected with high sensitivity and high accuracy.

[0031] If the power conversion unit 10 includes a switching circuit 11, the control signal of the switching circuit 11 may be used as the first detection signal Sd1. In one example, a first signal Sg1 may be generated from the control signal of the switching circuit 11. An output signal Sx1 may be derived according to the difference between such a first signal Sg1 and a second signal Sg2. In this case as well, the effects of noise can be suppressed, and the state of the power generation unit 20 can be detected with high sensitivity and accuracy. Appropriate maintenance is encouraged. A power generation system capable of stable operation can be provided. Another example of control using the control signal of the switching circuit 11 will be described later.

[0032] In one embodiment, the output signal Sx1 may depend on the state (second state) of the power conversion unit 10. The second state includes at least one of a failure of the power conversion unit 10 and deterioration of the power conversion unit 10. The processor 78 may be configured to output information Id1 regarding the second state based on the output signal Sx1. The processor 78 may, for example, determine a failure or deterioration of the power conversion unit 10. Information Id1 may include the result of the determination regarding the failure or deterioration.

[0033] Figures 2(a) to 2(c) are schematic diagrams illustrating the operation of the power generation system according to the first embodiment. The horizontal axis in these figures represents time tm. Figure 2(a) corresponds to the first detection signal Sd1. Figure 2(b) corresponds to the second detection signal Sd2. Figure 2(c) corresponds to the output signal Sx1.

[0034] As shown in Figure 2(a), the first detection signal Sd1 includes a first component x1 and a second component x2. The first component x1 and the second component x2 are periodic.

[0035] As shown in Figure 2(b), the second detection signal Sd2 includes the third component y3, the fourth component y4, the fifth component y5, and the sixth component y6. The third component y3 is synchronized with the first component x1. The fourth component y4 is synchronized with the second component x2. In this example, the first detection signal Sd1 substantially does not contain components synchronized with the fifth component y5 and the sixth component y6.

[0036] As shown in Figure 2(c), the output signal Sx1 includes a seventh component z7 and an eighth component z8. The seventh component z7 is synchronized with, for example, the fifth component y5. The eighth component z8 is synchronized with, for example, the sixth component y6. Such an output signal Sx1 is obtained, for example, by the difference between a first signal Sg1 based on a first detection signal Sd1 and a second signal Sg2 based on a second detection signal Sd2.

[0037] For example, the third component y3 and the fourth component y4 included in the second detection signal Sd2 are thought to be influenced by the power conversion unit 10. On the other hand, the fifth component y5 and the sixth component y6 included in the second detection signal Sd2 are thought to be substantially unaffected by the power conversion unit 10. The fifth component y5 and the sixth component y6 are thought to be characteristics unique to the power generation unit 20. The seventh component z7 and the eighth component z8 are thought to be characteristics unique to the power generation unit 20.

[0038] In the output signal Sx1 based on both the first detection signal Sd1 and the second detection signal Sd2, the influence from the power conversion unit 10 is suppressed, and the seventh component z7 and the eighth component z8, which correspond to the characteristics unique to the power generation unit 20, are obtained with high accuracy and stability.

[0039] Figures 3(a) to 3(c) are schematic diagrams illustrating the operation of the power generation system according to the first embodiment. The horizontal axis in these figures represents time tm. Figure 3(a) corresponds to the first detection signal Sd1. Figure 3(b) corresponds to the second detection signal Sd2. Figure 3(c) corresponds to the output signal Sx1.

[0040] As shown in Figure 3(a), the first detection signal Sd1 includes a first component x1 and a second component x2. The first component x1 and the second component x2 are periodic.

[0041] As shown in Figure 3(b), the second detection signal Sd2 includes a third component y3, a fourth component y4, a fifth component y5, and a sixth component y6. These components are synchronized with the first component x1 and the second component x2. In this example, the magnitude of the third component y3 is substantially the same as the magnitude of the fourth component y4. The magnitude of the fifth component y5 is greater than the magnitude of the third component y3. The magnitude of the sixth component y6 is smaller than the magnitude of the fourth component y4.

[0042] As shown in Figure 3(c), the output signal Sx1 includes a seventh component z7 and an eighth component z8. The seventh component z7 is synchronized with, for example, the fifth component y5. The eighth component z8 is synchronized with, for example, the sixth component y6. Such an output signal Sx1 is obtained, for example, by the difference between the first detection signal Sd1 and the second detection signal Sd2.

[0043] In the example shown in Figure 3(b), it is thought that a fifth component y5 is generated when the electromagnetic signal from the power generation unit 20 and the electromagnetic signal from the power conversion unit 10 reinforce each other. It is thought that a sixth component y6 is generated when the electromagnetic signal from the power generation unit 20 and the electromagnetic signal from the power conversion unit 10 destructively reinforce each other.

[0044] In the output signal Sx1 based on both the first detection signal Sd1 and the second detection signal Sd2, for example, the influence from the power conversion unit 10 is suppressed, and the seventh component z7 and the eighth component z8, which correspond to the characteristics unique to the power generation unit 20, can be obtained with high accuracy and stability.

[0045] In the examples shown in Figures 2(a) to 2(c) and Figures 3(a) to 3(c), the output signal Sx1 may be obtained by the first process described above. As already explained, the first process may include a comparison process. The first process may include a cancellation process. The first process may include a correlation process.

[0046] Figure 4 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in Figure 4, in the power generation system 111 according to this embodiment, an output signal Sx1 is output from the processor 78 of the detection unit 70. The configuration of the power generation system 111, aside from this, may be the same as the configuration of the power generation system 110.

[0047] In the power generation system 111, the output signal Sx1 includes information about the state (first state) of the power generation unit 20. This information may include notifications or alerts. Appropriate maintenance is encouraged in the power generation system 111 as well. A power generation system capable of stable operation can be provided.

[0048] Figure 5 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in Figure 5, in the power generation system 112 according to this embodiment, the detection unit 70 includes a first circuit 71, a second circuit 72, and a processing circuit 75. The configuration of the power generation system 112, excluding this, may be the same as the configuration of the power generation system 110.

[0049] The first circuit 71 is configured to process the first detection signal Sd1 to generate the first signal Sg1. The second circuit 72 is configured to process the second detection signal Sd2 to generate the second signal Sg2. The processing circuit 75 is configured to process the first signal Sg1 and the second signal Sg2 to generate the output signal Sx1. The processing in the first circuit 71 and the second circuit 72 may include, for example, at least one of AD conversion and amplitude adjustment.

[0050] By providing the first circuit 71 and the second circuit 72, the distance between the first circuit 71 and the first detection element 31 can be shortened. The distance between the second circuit 72 and the second detection element 32 can be shortened. Noise can be further suppressed.

[0051] Figure 6 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in Figure 6, in the power generation system 113 according to this embodiment, the power generation unit 20 includes a plurality of components 28. The configuration of the power generation system 113, excluding these components, may be the same as that of the power generation system 110.

[0052] For example, the multiple components 28 include a first component 21. The first component 21 is the closest to the power conversion unit 10 among the multiple components 28. In this example, the distance between the second detection element 32 and the first component 21 is shorter than the distance between the second detection element 32 and the other multiple components 28. The second detection element 32 may be provided near the first component 21, which is closest to the power conversion unit 10.

[0053] Figure 7 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in Figure 7, in the power generation system 113a according to this embodiment, the power generation unit 20 includes a plurality of components 28. The configuration of the power generation system 113a, excluding these components, may be the same as that of the power generation system 110.

[0054] For example, the multiple components 28 include a first component 21. The first component 21 is located at a position that includes the center of the multiple components. In this example, the distance between the second detection element 32 and the first component 21 is shorter than the distance between the second detection element 32 and the other multiple components 28. The second detection element 32 may be located near the first component 21 at a substantially central position in the multiple components.

[0055] Figure 8 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in Figure 8, in the power generation system 113b according to this embodiment, the power generation unit 20 includes a plurality of components 28. The configuration of the power generation system 113b, excluding these components, may be the same as that of the power generation system 110.

[0056] For example, the multiple components 28 include a first component 21. The first component 21 is the furthest from the power conversion unit 10 among the multiple components 28. In this example, the distance between the second detection element 32 and the first component 21 is shorter than the distance between the second detection element 32 and the other multiple components 28. The second detection element 32 may be provided in the vicinity of the first component 21, which is the furthest from the power conversion unit 10.

[0057] Figure 9 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in Figure 9, the power generation system 113c according to this embodiment is provided with a plurality of second detection elements 32. The configuration of the power generation system 113c, excluding these, may be the same as that of the power generation system 110. For example, the plurality of second detection elements 32 may be provided corresponding to a plurality of component parts 28. The state of each of the plurality of component parts 28 can be detected with high accuracy.

[0058] In the case of thermal power generation, the multiple components 28 include, for example, a turbine and a generator. In the case of hydroelectric power generation, the multiple components 28 include, for example, a water turbine and a generator. In the case of wind power generation, the multiple components 28 include, for example, blades, a speed increaser and a generator. The above components may be further divided into smaller components. If one of the multiple components 28 is a blade, the multiple components 28 may include, for example, the blade portion, the shaft portion, and the bearing portion that supports the shaft. The multiple components 28 may be arranged, for example, along one direction.

[0059] Figure 10 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in Figure 10, the power generation system 114 according to this embodiment includes a housing 10H. The configuration of the power generation system 114, excluding the housing, may be the same as that of the power generation system 110.

[0060] The power conversion unit 10 and the first detection element 31 are located inside the housing 10H. The housing 10H is, for example, conductive. The housing 10H functions, for example, as an electromagnetic shield. Noise can be further suppressed.

[0061] Figure 11 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in Figure 11, in the power generation system 115 according to this embodiment, the first detection element 31 is omitted. The configuration of the power generation system 115, excluding this element, may be the same as that of the power generation system 110.

[0062] For example, the power generation system 115 includes a power generation unit 20, a power conversion unit 10, a second detection element 32, and a detection unit 70. The power conversion unit 10 includes a switching circuit 11. The switching circuit 11 is configured to convert the power generated by the power generation unit 20. The detection unit 70 is configured to output an output signal Sx1 based on the control signal Sc1 of the switching circuit 11 and a second detection signal Sd2 obtained from the second detection element 32.

[0063] When the power conversion unit 10 includes a switching circuit 11, the first electromagnetic signal E1 from the power conversion unit 10 is easily synchronized with the operation of the switching circuit 11. By referring to the control signal Sc1 of the operation of the switching circuit 11, the influence from the power conversion unit 10 included in the second detection signal Sd2 obtained from the second detection element 32 can be effectively suppressed. The state of the power generation unit 20 can be accurately and stably detected. For example, appropriate maintenance is encouraged. A power generation system capable of stable operation can be provided.

[0064] In one example, the control signal Sc1 may have a first polarity when transitioning from the off state to the on state, and a second polarity when transitioning from the on state to the off state. The first polarity may be either positive or negative. The second polarity may be either positive or negative. The control signal Sc1 may include a periodically repeating waveform.

[0065] For example, the detection unit 70 may include a plurality of switching circuits 11. A control signal Sc1 may be provided corresponding to each of the plurality of switching circuits 11. One of the plurality of control signals Sc1 may control one of the plurality of switching circuits 11. Another of the plurality of control signals Sc1 may control another of the plurality of switching circuits 11. The plurality of control signals Sc1 may have the same period. The plurality of control signals Sc1 may have different periods. The plurality of control signals Sc1 may have different phases. The detection unit 70 may be configured to output an output signal Sx1 based on the plurality of control signals Sc1 and a second detection signal Sd2 obtained from the second detection element 32. The state of the power generation unit 20 can be accurately and stably detected. For example, appropriate maintenance can be encouraged. A power generation system capable of stable operation can be provided. The detection unit 70 may be configured to output an output signal Sx1 based on a signal obtained by combining the plurality of control signals Sc1 and a second detection signal Sd2 obtained from the second detection element 32.

[0066] Figures 12(a) to 12(c) are schematic diagrams illustrating the operation of the power generation system according to the first embodiment. The horizontal axis in these figures represents time tm. Figure 12(a) corresponds to the control signal Sc1 of the switching circuit 11. Figure 12(b) corresponds to the second detection signal Sd2. Figure 12(c) corresponds to the output signal Sx1.

[0067] As shown in Figure 12(a), the control signal repeatedly switches between ON and OFF. The ON / OFF cycle is periodic.

[0068] As shown in Figure 12(b), the second detection signal Sd2 includes a third component y3, a fourth component y4, a fifth component y5, and a sixth component y6. The third component y3 and the fourth component y4 are synchronized with the ON / OFF state of the control signal Sc1. The fifth component y5 and the sixth component y6 are not synchronized with the control signal Sc1.

[0069] As shown in Figure 12(c), the output signal Sx1 includes a seventh component z7 and an eighth component z8. The seventh component z7 is synchronized with, for example, the fifth component y5. The eighth component z8 is synchronized with, for example, the sixth component y6. Such an output signal Sx1 is obtained, for example, by the difference between the control signal Sc1 and the second signal Sg2 based on the second detection signal Sd2. For example, the component of the second detection signal Sd2 corresponding to the switching timing of the control signal Sc1 is substantially excluded.

[0070] In the output signal Sx1, which is based on both the control signal Sc1 and the second detection signal Sd2, the influence from the power conversion unit 10 is suppressed, and the state of the power generation unit 20 can be obtained with high accuracy and stability.

[0071] The configuration described for power generation system 115 may also be applied to power generation system 111, power generation system 113a, power generation system 113b, and power generation system 113c, etc.

[0072] Figure 13 is a schematic diagram illustrating a power generation system according to the first embodiment. As shown in Figure 13, in the power generation system 116 according to this embodiment, the position of at least a portion of the detection unit 70 is different from the position where the first detection element 31 and the second detection element 32 are provided. The configuration of the power generation system 116, apart from this, may be the same as that of the power generation system 110.

[0073] In the power generation system 116, communication between the first detection element 31 and at least a part of the detection unit 70, and communication between the second detection element 32 and at least a part of the detection unit 70 may be performed by wired or wireless means. For example, the location where the first circuit 71 is provided and the locations where the processing circuit 75 and the processor 78 are provided may be different from each other.

[0074] At least a portion of the detection unit 70 may be, for example, a computer connected via a network. The computer may be a cloud computer.

[0075] As described above, the first detection signal Sd1 obtained from the first detection element 31 corresponds to the first electromagnetic signal E1 from the power conversion unit 10. The second detection signal Sd2 obtained from the second detection element 32 may correspond to the second electromagnetic signal E2 from the power generation unit 20 and the first electromagnetic signal E1. In this embodiment, the first detection element 31 may detect various signals obtained from the power conversion unit 10. The second detection element 32 may detect various signals obtained from the power generation unit 20. The various signals may include, for example, at least one of vibration, sound waves, and light.

[0076] (Second Embodiment) The second embodiment relates to a measurement system. As shown in Figure 1, the measurement system 210 according to the embodiment includes a first detection element 31, a second detection element 32, and a detection unit 70. The first distance between the first detection element 31 and the power conversion unit 10 is shorter than the second distance between the first detection element 31 and the power generation unit 20. The power conversion unit 10 is configured to convert the power generated by the power generation unit 20. The detection unit 70 is configured to output an output signal Sx1 based on a first detection signal Sd1 obtained from the first detection element 31 and a second detection signal Sd2 obtained from the second detection element 32. A measurement system capable of stable operation can be provided.

[0077] As shown in Figure 11, the measurement system 215 according to this embodiment includes a second detection element 32 and a detection unit 70. The second detection element 32 is configured to detect an electromagnetic signal (second electromagnetic signal E2) from the power generation unit 20. The detection unit 70 is configured to output an output signal Sx1 based on a control signal Sc1 of a switching circuit 11 configured to convert the power generated by the power generation unit 20 and a second detection signal Sd2 obtained from the second detection element. This provides a measurement system that can operate stably.

[0078] Various configurations described with respect to the power generation system 110 can be applied to the measurement system 210. As shown in Figures 4 to 11 and Figure 13, the measurement systems 211, 212, 213, 213a, 213b, 213c, 214, 215, and 216 according to the embodiment may each be configured with the configurations described with respect to the power generation systems 111, 112, 113, 113a, 113b, 113c, 114, 115, and 116, respectively.

[0079] For example, significant noise is likely to occur when a switching circuit 11 is provided. In this embodiment, for example, the failure or deterioration of the power generation unit 20 can be detected with high accuracy and stability while suppressing the effects of noise. For example, electromagnetic signals caused by failure or deterioration can be effectively detected.

[0080] For example, the first detection element 31 efficiently detects electromagnetic signals generated from the power conversion unit 10. The second detection element 32 can efficiently detect signals generated from the power generation unit 20 while suppressing the influence of electromagnetic signals generated from the power conversion unit 10. For example, it can detect signals generated from the power generation unit 20 with greater accuracy. The second detection element 32 is capable of detecting electromagnetic signals over a wide range.

[0081] The embodiments may include the following technical proposals. (Technical proposal 1) The power generation section, A power conversion unit configured to convert the power generated by the aforementioned power generation unit, A first detection element wherein the first distance between the first detection element and the power conversion unit is shorter than the second distance between the first detection element and the power generation unit, The second detection element, A detection unit configured to output an output signal based on a first detection signal obtained from the first detection element and a second detection signal obtained from the second detection element, A power generation system equipped with [a specific feature / equipment].

[0082] (Technical proposal 2) The first detection signal corresponds to the first electromagnetic signal from the power conversion unit. The second detection signal corresponds to the second electromagnetic signal from the power generation unit and the first electromagnetic signal, as described in Technical Proposal 1.

[0083] (Technical proposal 3) The power generation system according to Technical Proposal 1 or 2, wherein the third distance between the second detection element and the power generation unit is shorter than the fourth distance between the second detection element and the power conversion unit.

[0084] (Technical proposal 4) The power generation system according to any one of Technical Proposals 1 to 3, wherein the output signal includes information regarding the difference between a first signal based on the first detection signal and a second signal based on the second detection signal.

[0085] (Technical proposal 5) The detection unit is configured to process a first signal based on the first detection signal and a second signal based on the second detection signal by a first process to derive the output signal. The first process includes at least one of a comparison process, a cancellation process, and a correlation process. The comparison process includes deriving the result of comparing the first signal and the second signal, The cancellation process includes removing at least a portion of the second signal component included in the second signal using at least a portion of the first signal, The power generation system according to any one of the technical proposals 1 to 3, wherein the correlation process includes deriving at least one component of the first signal and the second signal, and in the component, the correlation value between the first signal and the second signal is less than a threshold value.

[0086] (Technical proposal 6) The detection unit includes a first circuit and a processing circuit. The first circuit is configured to generate a first signal obtained by processing the first detection signal and a second signal obtained by processing the second detection signal. The power generation system according to Technical Proposal 1, wherein the processing circuit is configured to generate the output signal corresponding to the difference between the first signal and the second signal.

[0087] (Technical proposal 7) The detection unit includes a first circuit, a second circuit, and a processing circuit. The first circuit is configured to process the first detection signal to generate a first signal, The second circuit is configured to process the second detection signal to generate a second signal. The power generation system according to Technical Proposal 1, wherein the processing circuit is configured to generate the output signal corresponding to the difference between the first signal and the second signal.

[0088] (Technical proposal 8) The output signal is determined according to the first state of the power generation unit. The power generation system according to any one of Technical Proposals 1 to 7, wherein the first state includes at least one of a failure of the power generation unit and deterioration of the power generation unit.

[0089] (Technical proposal 9) The detection unit includes a processor, The power generation system according to Technical Proposal 8, wherein the processor is configured to output information about the first state based on the output signal.

[0090] (Technical proposal 10) The power generation system according to Technical Proposal 8, wherein the output signal includes information relating to the first state.

[0091] (Technical proposal 11) The power conversion unit includes a switching circuit, The power generation system according to any one of the technical proposals 1 to 10, wherein the switching circuit is configured to convert the power.

[0092] (Technical proposal 12) The first detection element includes a probe, The power generation system according to any one of the technical proposals 1 to 11, wherein the probe is in contact with the power conversion unit or is not in contact with the power conversion unit.

[0093] (Technical proposal 13) The power generation system according to any one of Technical Proposals 1 to 12, wherein the second detection element includes an antenna.

[0094] (Technical proposal 14) The power generation unit includes a plurality of components, The aforementioned plurality of components include the first component, The first component is the closest among the plurality of components to the power conversion unit, The power generation system according to any one of the technical proposals 1 to 13, wherein the distance between the second detection element and the first component is shorter than the distance between the second detection element and the other plurality of components.

[0095] (Technical proposal 15) The power generation unit includes a plurality of components, The aforementioned plurality of components include the first component, The first component is located at a position that includes the center of the plurality of components, The power generation system according to any one of the technical proposals 1 to 13, wherein the distance between the second detection element and the first component is shorter than the distance between the second detection element and the other plurality of components.

[0096] (Technical proposal 16) The power generation unit includes a plurality of components, The aforementioned plurality of components include the first component, The first component is the one furthest from the power conversion unit among the plurality of components, The power generation system according to any one of the technical proposals 1 to 13, wherein the distance between the second detection element and the first component is shorter than the distance between the second detection element and the other plurality of components.

[0097] (Technical proposal 17) With an additional enclosure, The power conversion unit and the first detection element are located inside the housing, as described in any one of Technical Proposals 1 to 16.

[0098] (Technical proposal 18) The power generation section, A power conversion unit including a switching circuit configured to convert the power generated by the power generation unit, The second detection element, A detection unit is configured to output an output signal based on the control signal of the switching circuit and the second detection signal obtained from the second detection element. A power generation system equipped with [a specific feature / equipment].

[0099] (Technical proposal 19) A first detection element, wherein the first distance between the first detection element and the power conversion unit is shorter than the second distance between the first detection element and the power generation unit, and the power conversion unit is configured to convert the power generated by the power generation unit, The second detection element, A detection unit configured to output an output signal based on a first detection signal obtained from the first detection element and a second detection signal obtained from the second detection element, A measurement system equipped with the following features.

[0100] (Technical proposal 20) A second detection element configured to detect electromagnetic signals from the power generation unit, Detection unit, Equipped with, The detection unit is configured to output an output signal based on a control signal of a switching circuit configured to convert the power generated by the power generation unit, and a second detection signal obtained from the second detection element, in a measurement system.

[0101] According to the embodiment, a power generation system and a measurement system capable of stable operation can be provided.

[0102] Embodiments of the present invention have been described above with reference to examples. However, the present invention is not limited to these examples. For example, the specific configurations of each element included in a power generation system, such as a power generation unit, power conversion unit, detection unit, detection element, switching circuit, processing circuit, and processor, are included within the scope of the present invention as long as those skilled in the art can appropriately select from the known scope to implement the present invention in a similar manner and obtain similar effects.

[0103] Combinations of two or more elements from each example, to the extent technically feasible, are also included within the scope of the present invention, insofar as they encompass the gist of the invention.

[0104] All power generation systems and measurement systems that a person skilled in the art can implement by appropriately modifying the design based on the power generation system and measurement system described above as embodiments of the present invention also fall within the scope of the present invention, insofar as they encompass the gist of the present invention.

[0105] Within the scope of the concept of this invention, a person skilled in the art would be able to conceive of various modifications and alterations, and it is understood that such modifications and alterations also fall within the scope of this invention.

[0106] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of symbols]

[0107] 10: Power conversion unit, 10H: Housing, 11: Switching circuit, 20: Power generation unit, 21: First component part, 28: Component part, 31, 32: First and second detection elements, 31p: Probe, 32: Second detection element, 32a: Antenna, 70: Detection unit, 71, 72: First and second circuits, 75: Processing circuit, 78: Processor, 110~116, 113a~113c: Power generation system, 210~216, 213a~213c: Measurement system, E1, E2: First and second electromagnetic signals, Id1: Information, Sc1: Control signal, Sd1, Sd2: First and second detection signals, Sg1, Sg2: First and second signals, Sx1: Output signal, x1, x2: First and second components, y3~y6: 3rd~6th components, z7, z8: 7th, 8th components

Claims

1. The power generation section, A power conversion unit configured to convert the power generated by the aforementioned power generation unit, A first detection element wherein the first distance between the first detection element and the power conversion unit is shorter than the second distance between the first detection element and the power generation unit, The second detection element, A detection unit configured to output an output signal based on a first detection signal obtained from the first detection element and a second detection signal obtained from the second detection element, A power generation system equipped with [a specific feature / equipment].

2. The first detection signal corresponds to the first electromagnetic signal from the power conversion unit. The power generation system according to claim 1, wherein the second detection signal corresponds to the second electromagnetic signal from the power generation unit and the first electromagnetic signal.

3. The power generation system according to claim 1, wherein the third distance between the second detection element and the power generation unit is shorter than the fourth distance between the second detection element and the power conversion unit.

4. The power generation system according to any one of claims 1 to 3, wherein the output signal includes information regarding the difference between a first signal based on the first detection signal and a second signal based on the second detection signal.

5. The detection unit is configured to process a first signal based on the first detection signal and a second signal based on the second detection signal by a first process to derive the output signal. The first process includes at least one of a comparison process, a cancellation process, and a correlation process. The comparison process includes deriving the result of comparing the first signal and the second signal, The cancellation process includes removing at least a portion of the second signal component included in the second signal using at least a portion of the first signal, The power generation system according to any one of claims 1 to 3, wherein the correlation process includes deriving at least one component of the first signal and the second signal, and in the component, the correlation value between the first signal and the second signal is less than a threshold value.

6. The detection unit includes a first circuit and a processing circuit. The first circuit is configured to generate a first signal obtained by processing the first detection signal and a second signal obtained by processing the second detection signal. The power generation system according to claim 1, wherein the processing circuit is configured to generate the output signal corresponding to the difference between the first signal and the second signal.

7. The detection unit includes a first circuit, a second circuit, and a processing circuit. The first circuit is configured to process the first detection signal and generate a first signal. The second circuit is configured to process the second detection signal to generate a second signal. The power generation system according to claim 1, wherein the processing circuit is configured to generate the output signal corresponding to the difference between the first signal and the second signal.

8. The output signal is determined according to the first state of the power generation unit. The power generation system according to any one of claims 1 to 3, wherein the first state includes at least one of a failure of the power generation unit and deterioration of the power generation unit.

9. The detection unit includes a processor, The power generation system according to claim 8, wherein the processor is configured to output information relating to the first state based on the output signal.

10. The power generation system according to claim 8, wherein the output signal includes information relating to the first state.

11. The power conversion unit includes a switching circuit, The power generation system according to any one of claims 1 to 3, wherein the switching circuit is configured to convert the power.

12. The first detection element includes a probe, The power generation system according to any one of claims 1 to 3, wherein the probe is in contact with the power conversion unit or is not in contact with the power conversion unit.

13. The power generation system according to any one of claims 1 to 3, wherein the second detection element includes an antenna.

14. The power generation unit includes a plurality of components, The aforementioned plurality of components include the first component, The first component is the closest among the plurality of components to the power conversion unit, The power generation system according to any one of claims 1 to 3, wherein the distance between the second detection element and the first component is shorter than the distance between the second detection element and the other plurality of components.

15. The power generation unit includes a plurality of components, The aforementioned plurality of components include the first component, The first component is located at a position that includes the center of the plurality of components, The power generation system according to any one of claims 1 to 3, wherein the distance between the second detection element and the first component is shorter than the distance between the second detection element and the other plurality of components.

16. The power generation unit includes a plurality of components, The aforementioned plurality of components include the first component, The first component is the one furthest from the power conversion unit among the plurality of components, The power generation system according to any one of claims 1 to 3, wherein the distance between the second detection element and the first component is shorter than the distance between the second detection element and the other plurality of components.

17. With an additional enclosure, The power generation system according to any one of claims 1 to 3, wherein the power conversion unit and the first detection element are located inside the housing.

18. The power generation section, A power conversion unit including a switching circuit configured to convert the power generated by the power generation unit, The second detection element, A detection unit is configured to output an output signal based on the control signal of the switching circuit and the second detection signal obtained from the second detection element. A power generation system equipped with [a specific feature / equipment].

19. A first detection element, wherein the first distance between the first detection element and the power conversion unit is shorter than the second distance between the first detection element and the power generation unit, and the power conversion unit is configured to convert the power generated by the power generation unit, The second detection element, A detection unit configured to output an output signal based on a first detection signal obtained from the first detection element and a second detection signal obtained from the second detection element, A measurement system equipped with the following features.

20. A second detection element configured to detect electromagnetic signals from the power generation unit, Detection unit, Equipped with, The detection unit is configured to output an output signal based on a control signal of a switching circuit configured to convert the power generated by the power generation unit, and a second detection signal obtained from the second detection element, in a measurement system.

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