메뉴 건너뛰기




Volumn 10, Issue 2, 2016, Pages 92-99

Separation of adjacent interharmonics using maximum energy retrieving algorithm

Author keywords

[No Author keywords available]

Indexed keywords

ALGORITHMS; DISCRETE FOURIER TRANSFORMS; ITERATIVE METHODS;

EID: 84958794313     PISSN: 17518822     EISSN: None     Source Type: Journal    
DOI: 10.1049/iet-smt.2015.0115     Document Type: Article
Times cited : (6)

References (49)
  • 1
    • 77953331641 scopus 로고    scopus 로고
    • Application of planar modular windings to linear induction motors by harmonic cancellation
    • Eastham, J.F., Cox, T., Proverbs, J.: 'Application of planar modular windings to linear induction motors by harmonic cancellation', IET Electr. Power Appl., 2010, 4, (3), pp. 140-148
    • (2010) IET Electr. Power Appl. , vol.4 , Issue.3 , pp. 140-148
    • Eastham, J.F.1    Cox, T.2    Proverbs, J.3
  • 2
    • 84868336419 scopus 로고    scopus 로고
    • Control and operation of fault-tolerant flux-switching permanent-magnet motor drive with second harmonic current injection
    • Zhao, W.X., Cheng, M., Chau, K.T., et al.: 'Control and operation of fault-tolerant flux-switching permanent-magnet motor drive with second harmonic current injection', IET Electr. Power Appl., 2012, 6, (9), pp. 707-715
    • (2012) IET Electr. Power Appl. , vol.6 , Issue.9 , pp. 707-715
    • Zhao, W.X.1    Cheng, M.2    Chau, K.T.3
  • 4
    • 77955765209 scopus 로고    scopus 로고
    • Impact of balanced and unbalanced direct current bias on harmonic distortion generated by asymmetric three-phase three-leg transformers
    • Masoum, M.A.S., Moses, P.S.: 'Impact of balanced and unbalanced direct current bias on harmonic distortion generated by asymmetric three-phase three-leg transformers', IET Electr. Power Appl., 2010, 4, (7), pp. 507-515
    • (2010) IET Electr. Power Appl. , vol.4 , Issue.7 , pp. 507-515
    • Masoum, M.A.S.1    Moses, P.S.2
  • 5
    • 12544255203 scopus 로고    scopus 로고
    • Measurement of harmonics/ inter-harmonics of time-varying frequency
    • Karimi-Ghartemani, M., Reza Iravani, M.: 'Measurement of harmonics/ inter-harmonics of time-varying frequency', IEEE Trans. Power Deliv., 2005, 20, (1), pp. 23-31
    • (2005) IEEE Trans. Power Deliv. , vol.20 , Issue.1 , pp. 23-31
    • Karimi-Ghartemani, M.1    Reza Iravani, M.2
  • 6
    • 34247156706 scopus 로고    scopus 로고
    • Fast tracking of time-varying power system frequency and harmonics using iterative-loop approaching algorithm
    • Lin, H.C.: 'Fast tracking of time-varying power system frequency and harmonics using iterative-loop approaching algorithm', IEEE Trans. Ind. Electron., 2007, 54, (2), pp. 974-983
    • (2007) IEEE Trans. Ind. Electron. , vol.54 , Issue.2 , pp. 974-983
    • Lin, H.C.1
  • 7
    • 19944423168 scopus 로고    scopus 로고
    • New technique for frequency and amplitude estimation of power system signals
    • Aghazadeh, R., Lesani, H., Sanaye-Pasand, M., et al.: 'New technique for frequency and amplitude estimation of power system signals', IEE Proc. Gener. Transm. Distrib., 2005, 152, (3), pp. 435-440
    • (2005) IEE Proc. Gener. Transm. Distrib. , vol.152 , Issue.3 , pp. 435-440
    • Aghazadeh, R.1    Lesani, H.2    Sanaye-Pasand, M.3
  • 8
    • 0038348496 scopus 로고    scopus 로고
    • Interharmonics: basic concepts and techniques for their detection and measurement
    • Li, C., Xu, W., Tayjasanant, T.: 'Interharmonics: basic concepts and techniques for their detection and measurement', Electr. Power Syst. Res., 2003, 66, (1), pp. 39-48
    • (2003) Electr. Power Syst. Res. , vol.66 , Issue.1 , pp. 39-48
    • Li, C.1    Xu, W.2    Tayjasanant, T.3
  • 9
    • 17844386087 scopus 로고    scopus 로고
    • Interharmonic-flicker curves
    • Tayjasanant, T., Wang, W., Li, C., et al.: 'Interharmonic-flicker curves', IEEE Trans. Power Deliv., 2005, 20, (2), pp. 1017-1024
    • (2005) IEEE Trans. Power Deliv. , vol.20 , Issue.2 , pp. 1017-1024
    • Tayjasanant, T.1    Wang, W.2    Li, C.3
  • 10
    • 0035518457 scopus 로고    scopus 로고
    • Power system harmonics estimation using linear least squares method and SVD
    • Lobos, T., Kozina, T., Koglin, H.-J.: 'Power system harmonics estimation using linear least squares method and SVD', IEE Proc. Gener. Transm. Distrib., 2001, 148, (6), pp. 567-572
    • (2001) IEE Proc. Gener. Transm. Distrib. , vol.148 , Issue.6 , pp. 567-572
    • Lobos, T.1    Kozina, T.2    Koglin, H.-J.3
  • 11
    • 11244344021 scopus 로고    scopus 로고
    • Intelligent neural network based adaptive power line conditioner for real-time harmonics filtering
    • Lin, H.C.: 'Intelligent neural network based adaptive power line conditioner for real-time harmonics filtering', IEE Proc. Gener. Transm. Distrib., 2004, 151, (5), pp. 561-567
    • (2004) IEE Proc. Gener. Transm. Distrib. , vol.151 , Issue.5 , pp. 561-567
    • Lin, H.C.1
  • 12
    • 0030679207 scopus 로고    scopus 로고
    • Application of Kalman filtering for continuous real-time tracking of power system harmonics
    • Saiz, V.M.M., Guadalupe, J.B.: 'Application of Kalman filtering for continuous real-time tracking of power system harmonics', IEE Proc. Gener. Transm. Distrib., 1998, 144, (1), pp. 13-20
    • (1998) IEE Proc. Gener. Transm. Distrib. , vol.144 , Issue.1 , pp. 13-20
    • Saiz, V.M.M.1    Guadalupe, J.B.2
  • 13
    • 0031274056 scopus 로고    scopus 로고
    • Fast estimation of voltage and current phasors in power networks using an adaptive neural network
    • Dash, P.K., Panda, S.K., Mishra, B., et al.: 'Fast estimation of voltage and current phasors in power networks using an adaptive neural network', IEEE Trans. Power Syst., 1997, 12, (4), pp. 1494-1499
    • (1997) IEEE Trans. Power Syst. , vol.12 , Issue.4 , pp. 1494-1499
    • Dash, P.K.1    Panda, S.K.2    Mishra, B.3
  • 14
    • 24344476474 scopus 로고    scopus 로고
    • Interharmonics estimation based on interpolation FFT algorithm
    • Caijun, Q., Xiaohai, W.: 'Interharmonics estimation based on interpolation FFT algorithm', Trans. China Electrotech. Soc., 2003, I8, (I1), pp. 92-95
    • (2003) Trans. China Electrotech. Soc. , vol.I8 , Issue.I1 , pp. 92-95
    • Caijun, Q.1    Xiaohai, W.2
  • 15
    • 72849116921 scopus 로고    scopus 로고
    • On the processing of harmonics and interharmonics: using hanning window in standard framework
    • Testa, A., Gallo, D., Langella, R.: 'On the processing of harmonics and interharmonics: using hanning window in standard framework', IEEE Trans. Power Deliv., 2006, 21, (1), pp. 538-539
    • (2006) IEEE Trans. Power Deliv. , vol.21 , Issue.1 , pp. 538-539
    • Testa, A.1    Gallo, D.2    Langella, R.3
  • 16
    • 34147195139 scopus 로고    scopus 로고
    • Interharmonics analysis based on interpolating windowed FFT algorithm
    • Qian, H., Zhao, R., Chen, T.: 'Interharmonics analysis based on interpolating windowed FFT algorithm', IEEE Trans. Power Deliv., 2007, 22, (2), pp. 1064-1069
    • (2007) IEEE Trans. Power Deliv. , vol.22 , Issue.2 , pp. 1064-1069
    • Qian, H.1    Zhao, R.2    Chen, T.3
  • 17
    • 0346707417 scopus 로고    scopus 로고
    • On the processing of harmonics and interharmonics: using Hanning window in standard framework
    • Testa, A., Gallo, D., Langella, R.: 'On the processing of harmonics and interharmonics: using Hanning window in standard framework', IEEE Trans. Power Deliv., 2004, 19, (1), pp. 28-34
    • (2004) IEEE Trans. Power Deliv. , vol.19 , Issue.1 , pp. 28-34
    • Testa, A.1    Gallo, D.2    Langella, R.3
  • 18
    • 0035400178 scopus 로고    scopus 로고
    • Evaluation of frequency tracking methods
    • Thomas, D.W.P., Woolfson, M.S.: 'Evaluation of frequency tracking methods', IEEE Trans. Power Deliv., 2001, 16, (3), pp. 367-371
    • (2001) IEEE Trans. Power Deliv. , vol.16 , Issue.3 , pp. 367-371
    • Thomas, D.W.P.1    Woolfson, M.S.2
  • 19
    • 0036543745 scopus 로고    scopus 로고
    • Weighted multipoint interpolated DFT to improve amplitude estimation of multifrequency signal
    • Agrez, D.: 'Weighted multipoint interpolated DFT to improve amplitude estimation of multifrequency signal', IEEE Trans. Instrum. Meas., 2002, 51, (2), pp. 287-292
    • (2002) IEEE Trans. Instrum. Meas. , vol.51 , Issue.2 , pp. 287-292
    • Agrez, D.1
  • 20
    • 33947407630 scopus 로고    scopus 로고
    • Intelligent neural network based fast power system harmonic detection
    • Lin, H.C.: 'Intelligent neural network based fast power system harmonic detection', IEEE Trans. Ind. Electron., 2007, 54, (1), pp. 43-52
    • (2007) IEEE Trans. Ind. Electron. , vol.54 , Issue.1 , pp. 43-52
    • Lin, H.C.1
  • 21
    • 84859013451 scopus 로고    scopus 로고
    • The harmonics detection method based on neural network applied to harmonics compensation
    • Dehini, R., Bassou, A., Ferdi, B.: 'The harmonics detection method based on neural network applied to harmonics compensation', Int. J. Eng. Sci. Technol., 2010, 2, (5), pp. 258-267
    • (2010) Int. J. Eng. Sci. Technol. , vol.2 , Issue.5 , pp. 258-267
    • Dehini, R.1    Bassou, A.2    Ferdi, B.3
  • 22
    • 79953169823 scopus 로고    scopus 로고
    • Accurate assessment of harmonic and interharmonic currents generated by VSI-fed drives under unbalanced supply voltages
    • Chang, G.W., Chen, S.-K., Su, H.-J., et al.: 'Accurate assessment of harmonic and interharmonic currents generated by VSI-fed drives under unbalanced supply voltages', IEEE Trans. Power Deliv., 2011, 26, (2), pp. 1083-1091
    • (2011) IEEE Trans. Power Deliv. , vol.26 , Issue.2 , pp. 1083-1091
    • Chang, G.W.1    Chen, S.-K.2    Su, H.-J.3
  • 23
    • 78650905912 scopus 로고    scopus 로고
    • An impedance-based approach for identifying interharmonic sources
    • Nassif, A.B., Yong, J., Mazin, H., et al.: 'An impedance-based approach for identifying interharmonic sources', IEEE Trans. Power Deliv., 2011, 26, (1), pp. 333-340
    • (2011) IEEE Trans. Power Deliv. , vol.26 , Issue.1 , pp. 333-340
    • Nassif, A.B.1    Yong, J.2    Mazin, H.3
  • 24
    • 0036476841 scopus 로고    scopus 로고
    • A simple adjustable window algorithm to improve FFT measurements
    • Hidalgo, R.M., Fernandez, J.G., Rivera, R.R., et al.: 'A simple adjustable window algorithm to improve FFT measurements', IEEE Trans. Instrum. Meas., 2002, 51, (01), pp. 31-36
    • (2002) IEEE Trans. Instrum. Meas. , vol.51 , Issue.1 , pp. 31-36
    • Hidalgo, R.M.1    Fernandez, J.G.2    Rivera, R.R.3
  • 25
    • 35148890744 scopus 로고    scopus 로고
    • Exact harmonics/interharmonics calculation using adaptive window width
    • Zhu, T.X.: 'Exact harmonics/interharmonics calculation using adaptive window width', IEEE Trans. Power Deliv., 2007, 22, (4), pp. 2279-2288
    • (2007) IEEE Trans. Power Deliv. , vol.22 , Issue.4 , pp. 2279-2288
    • Zhu, T.X.1
  • 26
    • 77954028881 scopus 로고    scopus 로고
    • An accurate time-domain procedure for harmonics and interharmonics detection
    • Chang, G.W., Chen, C.-I.: 'An accurate time-domain procedure for harmonics and interharmonics detection', IEEE Trans. Power Deliv., 2010, 25, (3), pp. 1787-1795
    • (2010) IEEE Trans. Power Deliv. , vol.25 , Issue.3 , pp. 1787-1795
    • Chang, G.W.1    Chen, C.-I.2
  • 27
    • 37749003196 scopus 로고    scopus 로고
    • Estimating interharmonics by using sliding-window ESPRIT
    • Gu, I.Y.-H., Bollen, M.H.J.: 'Estimating interharmonics by using sliding-window ESPRIT', IEEE Trans. Power Deliv., 2008, 23, (1), pp. 13-23
    • (2008) IEEE Trans. Power Deliv. , vol.23 , Issue.1 , pp. 13-23
    • Gu, I.Y.-H.1    Bollen, M.H.J.2
  • 28
    • 84862777709 scopus 로고    scopus 로고
    • Exact model order ESPRIT technique for harmonics and interharmonics estimation
    • Jain, S.K., Singh, S.N.: 'Exact model order ESPRIT technique for harmonics and interharmonics estimation', IEEE Trans. Instrum. Meas., 2012, 61, (7), pp. 1915-1923
    • (2012) IEEE Trans. Instrum. Meas. , vol.61 , Issue.7 , pp. 1915-1923
    • Jain, S.K.1    Singh, S.N.2
  • 29
    • 84920774356 scopus 로고    scopus 로고
    • Separation and analyzing of harmonics and inter-harmonics based on single channel independent component analysis
    • He, C., Shu, Q.: 'Separation and analyzing of harmonics and inter-harmonics based on single channel independent component analysis', Int. Trans. Electr. Energy Syst., 2015, 25, pp. 169-179
    • (2015) Int. Trans. Electr. Energy Syst. , vol.25 , pp. 169-179
    • He, C.1    Shu, Q.2
  • 30
    • 79954565738 scopus 로고    scopus 로고
    • Harmonics and interharmonics separate-detection method based on estimation of leakage values caused by interharmonics
    • Jin, H., Honggeng, Y.: 'Harmonics and interharmonics separate-detection method based on estimation of leakage values caused by interharmonics', Trans. China Electrotech. Soc., 2011, 26, (1), pp. 183-191
    • (2011) Trans. China Electrotech. Soc. , vol.26 , Issue.1 , pp. 183-191
    • Jin, H.1    Honggeng, Y.2
  • 31
    • 0036543745 scopus 로고    scopus 로고
    • Weighted multipoint interpolated DFT to improve amplitude estimation of multifrequency signal
    • Agrez, D.: 'Weighted multipoint interpolated DFT to improve amplitude estimation of multifrequency signal', IEEE Trans. Instrum. Meas., 2002, 51, (2), pp. 287-292
    • (2002) IEEE Trans. Instrum. Meas. , vol.51 , Issue.2 , pp. 287-292
    • Agrez, D.1
  • 32
    • 78149467467 scopus 로고    scopus 로고
    • Analysis of the exponential signal by the interpolated DFT algorithm
    • Wu, R.-C., Tai, C.C.: 'Analysis of the exponential signal by the interpolated DFT algorithm', IEEE Trans. Instrum. Meas., 2010, 59, (12), pp. 3306-3317
    • (2010) IEEE Trans. Instrum. Meas. , vol.59 , Issue.12 , pp. 3306-3317
    • Wu, R.-C.1    Tai, C.C.2
  • 33
    • 0038778798 scopus 로고    scopus 로고
    • Testing and measurement techniques: harmonics and interharmonics: general guide on harmonics and inter-harmonics measurements and instrumentation for power supply systems and equipment connected thereto
    • IEC 61000-4-7
    • IEC 61000-4-7: 'Testing and measurement techniques: harmonics and interharmonics: general guide on harmonics and inter-harmonics measurements and instrumentation for power supply systems and equipment connected thereto', 2002
    • (2002)
  • 34
    • 84958751025 scopus 로고    scopus 로고
    • IEEE interharmonic task force
    • Interharmonics in power systems, Cigré 36.05/ CIRED 2 CC02 voltage quality working group
    • Interharmonics in power systems: 'IEEE interharmonic task force', Cigré 36.05/ CIRED 2 CC02 voltage quality working group
  • 35
    • 78650871056 scopus 로고    scopus 로고
    • The modified harmonic domain: interharmonics
    • Ramirez, A.: 'The modified harmonic domain: interharmonics', IEEE Trans. Power Deliv., 2011, 26, (1), pp. 235-241
    • (2011) IEEE Trans. Power Deliv. , vol.26 , Issue.1 , pp. 235-241
    • Ramirez, A.1
  • 36
    • 80054812763 scopus 로고    scopus 로고
    • Power harmonics and interharmonics measurement using recursive group-harmonic power minimizing algorithm
    • Lin, H.C.: 'Power harmonics and interharmonics measurement using recursive group-harmonic power minimizing algorithm', IEEE Trans. Ind. Electron., 2012, 59, (2), pp. 1184-1193
    • (2012) IEEE Trans. Ind. Electron. , vol.59 , Issue.2 , pp. 1184-1193
    • Lin, H.C.1
  • 37
    • 84860245741 scopus 로고    scopus 로고
    • Harmonic suppression in HVDC system using a modified control method for hybrid active DC filter
    • Hajibeigy, M., Farsadi, M., Nazarpour, D., et al.: 'Harmonic suppression in HVDC system using a modified control method for hybrid active DC filter', Eur. Trans. Electr. Power, 2012, 22, (3), pp. 294-307
    • (2012) Eur. Trans. Electr. Power , vol.22 , Issue.3 , pp. 294-307
    • Hajibeigy, M.1    Farsadi, M.2    Nazarpour, D.3
  • 38
    • 84873634473 scopus 로고    scopus 로고
    • Real-time power system phasors and harmonics estimation using a new decoupled recursive-least-squares technique for DSP implementation
    • Sadinezhad, I., Agelidis, V.G.: 'Real-time power system phasors and harmonics estimation using a new decoupled recursive-least-squares technique for DSP implementation', IEEE Trans. Ind. Electron., 2013, 60, (6), pp. 2295-2308
    • (2013) IEEE Trans. Ind. Electron. , vol.60 , Issue.6 , pp. 2295-2308
    • Sadinezhad, I.1    Agelidis, V.G.2
  • 39
    • 84872067375 scopus 로고    scopus 로고
    • Fast harmonic estimation of stationary and time-varying signals using EA-AWNN
    • Jain, S.K., Singh, S.N.: 'Fast harmonic estimation of stationary and time-varying signals using EA-AWNN', IEEE Trans. Instrum. Meas., 2013, 62, (2), pp. 335-343
    • (2013) IEEE Trans. Instrum. Meas. , vol.62 , Issue.2 , pp. 335-343
    • Jain, S.K.1    Singh, S.N.2
  • 40
    • 84897398656 scopus 로고    scopus 로고
    • Accurate harmonic/inter-harmonic estimation using DFT-based group-harmonics energy diffusion algorithm
    • Lin, H.C.: 'Accurate harmonic/inter-harmonic estimation using DFT-based group-harmonics energy diffusion algorithm', Can. J. Electr. Comput. Eng., 2014, 36, (4), pp. 158-171
    • (2014) Can. J. Electr. Comput. Eng. , vol.36 , Issue.4 , pp. 158-171
    • Lin, H.C.1
  • 41
    • 84901941042 scopus 로고    scopus 로고
    • Sources, effects and modelling of interharmonics
    • Lin, H.C.: 'Sources, effects and modelling of interharmonics', Math. Probl. Eng., 2014, 2014, pp. 1-10
    • (2014) Math. Probl. Eng. , vol.2014 , pp. 1-10
    • Lin, H.C.1
  • 42
    • 84887064240 scopus 로고    scopus 로고
    • An accurate solution procedure for calculation of voltage flicker components
    • Chen, C.I., Chen, Y.C., Chang, Y.R., et al.: 'An accurate solution procedure for calculation of voltage flicker components', IEEE Trans. Ind. Electron., 2014, 61, (5), pp. 2370-2377
    • (2014) IEEE Trans. Ind. Electron. , vol.61 , Issue.5 , pp. 2370-2377
    • Chen, C.I.1    Chen, Y.C.2    Chang, Y.R.3
  • 43
    • 84880910578 scopus 로고    scopus 로고
    • Comparative study of harmonic and interharmonic estimation methods for stationary and time-varying signals
    • Chen, C.-I., Chen, Y.-C.: 'Comparative study of harmonic and interharmonic estimation methods for stationary and time-varying signals', IEEE Trans. Ind. Electron., 2014, 61, (1), pp. 397-404
    • (2014) IEEE Trans. Ind. Electron. , vol.61 , Issue.1 , pp. 397-404
    • Chen, C.-I.1    Chen, Y.-C.2
  • 44
    • 84901595002 scopus 로고    scopus 로고
    • Extended C37.118.1 PMU algorithms for joint tracking of fundamental and harmonic phasors in stressed power systems and microgrids
    • Chakir, M., Kamwa, I., Le Huy, H.: 'Extended C37.118.1 PMU algorithms for joint tracking of fundamental and harmonic phasors in stressed power systems and microgrids', IEEE Trans. Power Deliv., 2014, 29, (3), pp. 1465-1480
    • (2014) IEEE Trans. Power Deliv. , vol.29 , Issue.3 , pp. 1465-1480
    • Chakir, M.1    Kamwa, I.2    Le Huy, H.3
  • 45
    • 84887087351 scopus 로고    scopus 로고
    • Detection and classification of single and combined power quality disturbances using neural networks
    • Valtierra-Rodriguez, M., de Jesus Romero-Troncoso, R., Osornio-Rios, R.A., et al.: 'Detection and classification of single and combined power quality disturbances using neural networks', IEEE Trans. Ind. Electron., 2014, 61, (5), pp. 2473-2482
    • (2014) IEEE Trans. Ind. Electron. , vol.61 , Issue.5 , pp. 2473-2482
    • Valtierra-Rodriguez, M.1    de Jesus Romero-Troncoso, R.2    Osornio-Rios, R.A.3
  • 46
    • 84880877425 scopus 로고    scopus 로고
    • Low-order dominant harmonic estimation using adaptive wavelet neural network
    • Jain, S.K., Singh, S.N.: 'Low-order dominant harmonic estimation using adaptive wavelet neural network', IEEE Trans. Ind. Electron., 2014, 61, (1), pp. 428-435
    • (2014) IEEE Trans. Ind. Electron. , vol.61 , Issue.1 , pp. 428-435
    • Jain, S.K.1    Singh, S.N.2
  • 47
    • 35148824605 scopus 로고    scopus 로고
    • Interharmonics: theory and modeling
    • Testa, A., Akram, M.F., Burch, R., et al.: 'Interharmonics: theory and modeling', IEEE Trans. Power Deliv., 2007, 22, (4), pp. 2335-2348
    • (2007) IEEE Trans. Power Deliv. , vol.22 , Issue.4 , pp. 2335-2348
    • Testa, A.1    Akram, M.F.2    Burch, R.3
  • 48
    • 0003513556 scopus 로고
    • Discrete-time signal processing
    • Prentice-Hall
    • Oppenheim, A.V., Schafer, R.W.: 'Discrete-time signal processing' (Prentice-Hall, 1989)
    • (1989)
    • Oppenheim, A.V.1    Schafer, R.W.2
  • 49
    • 0003474751 scopus 로고
    • Numerical recipes-the art of scientific computing
    • Cambridge University, Cambridge
    • Press, W.H., Flannery, B.P., Teukolsky, S.A., et al.: 'Numerical recipes-the art of scientific computing' (Cambridge University, Cambridge, 1986), pp. 420-429
    • (1986) , pp. 420-429
    • Press, W.H.1    Flannery, B.P.2    Teukolsky, S.A.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.