**Commenced**in January 2007

**Frequency:**Monthly

**Edition:**International

**Paper Count:**30174

##### Rapid Frequency Response Measurement of Power Conversion Products with Coherence-Based Confidence Analysis

**Authors:**
Tomi Roinila,
Aki Taskinen,
Matti Vilkko

**Abstract:**

**Keywords:**
Switched-mode converters,
Frequency analysis,
CoherenceAnalysis.

**Digital Object Identifier (DOI):**
doi.org/10.5281/zenodo.1082327

**References:**

[1] M. Sayani and J. Wanes, "Trends and drivers in isolated board-mounted DC/DC products for communications ap plications," in Proc. IEEE Applied Power Electronics Conference and Exposition, 2003, pp. 37-41.

[2] S. Mobin, H. Takano, and M. Nakaoka, "Simulation of series-parallel resonant DC-DC converter system with DSP based digital control scheme for medical X-ray use," in Proc. IEEE Industry Applications Conference, 1999, pp. 1048-1055.

[3] S. Madani and M. Shahbazi, "A soft-switching hybrid BLDC drive using dc-dc converter," in Proc. IEEE International Electric Machines and Drives Conference, 2009, pp. 1290-1294.

[4] A. Khaligh, S. Williamson, and A. Emadi, "Control and stabilization of DC/DC buck-boost converters loaded by constant power loads in vehicular systems using a novel digital scheme," in Proc. International Power Electronics and Motion Control Conference, 2006, pp. 1769-1775.

[5] M. Ehsani, L. Laskai, and M. Bilgic, "Topological variations of the inverse dual converter for high power DCDC applications," in Proc. IEEE Industry Applications Society Annual Meeting, 1990, pp. 1262-1266.

[6] K. Kobayashi, H. Matsuo, and Y. Sekine, "Novel solarcell power supply system using a multiple-input DCDC converter," IEEE Trans. on Industrial Electronics, vol. 53, no. 1, pp. 281-286, 2006.

[7] L. Palma and P. Enjeti, "A modular fuel cell, modular DC-DC converter concept for high performance and enhanced reliability," in Proc. IEEE Power Electronics Specialists Conference, 2007, pp. 2633-2638.

[8] S.-H. Song, S.-I. Kang, and N.-K. Hahm, "Implementation and control of grid connected AC-DC-AC power converter for variable speed wind energy conversion system," in Proc. IEEE Applied Power Electronics Conference and Exposition, 2003, pp. 154-158.

[9] "Energy star program requirements for displays 5.0," 2009, available: http://www.eu-energystar.org.

[10] R. Calantone and C. D. Benedetto, "Performance and time to market: Accelerating cycle time with overlapping stages," IEEE Trans. on Engineering Management, vol. 47, pp. 232-244, 2000.

[11] T. Suntio, Dynamic Profile of Switched-Mode Converter. Wiley-VCH Verlag GmbH and Co. KGaA, Weinheim, 2009.

[12] T. Roinila, M. Hankaniemi, T. Suntio, M. Sippola, and M. Vilkko, "Dynamical profile of a switched-mode converter - reality or imagination," in Proc. IEEE International Telecommunications Energy Conference, 2007, pp. 420-427.

[13] T. Suntio, M. Hankaniemi, and T. Roinila, "Dynamical modelling of peak-current-mode-controlled converter in continuous conduction mode," Simulation Modelling Practice and Theory, vol. 15, pp. 1321-1337, 2007.

[14] K. Natarajan and M. Yektaii, "Modeling of DC-DC buck converters for large-signal frequency response and limit cycles," IEEE Trans. on Circuits and Systems, vol. 53, pp. 712-716, 2006.

[15] R. Ridley, "Frequency response measurements for switching power supplies," in Unitrode Design Seminar, 1999.

[16] B. Miao, R. Zane, and D. Maksimovic, "A modified cross-correlation method for system identification of power converters with digital control," in Proc. IEEE Power Electronics Specialists Conference, 2004, pp. 3728-3733.

[17] ÔÇöÔÇö, "System identification of power converters with digital control through cross-correlation methods," IEEE Trans. on Power Electronics, vol. 20, no. 5, pp. 1093- 1099, 2005.

[18] ÔÇöÔÇö, "Practical identification of DC-DC converter dynamic responses," in Proc. Applied Power Electronics Conference and Exposition, 2005, pp. 57-62.

[19] ÔÇöÔÇö, "Automated digital controller design for switching converters," in Proc. IEEE Power Electronics Specialists Conference, 2005, pp. 2729-2735.

[20] ÔÇöÔÇö, "FPGA-based digital network analyzer for digitally controlled SMPS," in Proc. IEEE COMPEL Workshop, 2006, pp. 240-245.

[21] A. Barkley and E. Santi, "Improved online identification of switching converters using digital network analyzer techniques," in Proc. IEEE Power Electronics Specialists Conference, 2008, pp. 891-896.

[22] M. Shirazi, J. Morroni, A. Dolgov, and D. Maksimovic, "Integration of frequency response measurement capabilities in digital controllers for DC-DC converters," IEEE Trans. on Power Electronics, vol. 23, no. 5, pp. 2524- 2535, 2008.

[23] A. Barkley and E. Santi, "Online monitoring of network impedances using digital network analyzer techniques," in Proc. Applied Power Electronics Conference and Exposition, 2009, pp. 440-446.

[24] ÔÇöÔÇö, "Improved online identification of a DC/DC converter and its control loop gain using cross-correlation methods," IEEE Trans. on Power Electronics, vol. 24, pp. 2021-2031, 2009.

[25] T. Roinila, T. Helin, M. Vilkko, T. Suntio, and H. Koivisto, "Circular correlation based identification of switching power converter with uncertainty analysis using fuzzy density approach," Simulation Modelling Practice and Theory, vol. 17, pp. 1043-1058, 2009.

[26] T. Roinila, M. Vilkko, and T. Suntio, "Fast loop gain measurement of switched-mode converter using binary signal with specified Fourier amplitude spectrum," IEEE Trans. on Power Electronics, vol. 17, no. 6, pp. 2746- 2755, 2009.

[27] ÔÇöÔÇö, "Fast frequency response measurement of switched-mode converter in the presence of nonlinear distortions," in Proc. IEEE Energy Conversion Congress and Exposition, 2009, pp. 3014-3020.

[28] T. Suntio, M. Karppanen, and M. Hankaniemi, "Analysing the dynamics of regulated converters," IEE Proc. Electronic Power Applications, vol. 153, no. 6, pp. 905-910, 2006.

[29] L. Ljung, System Identification-Theory for the User. Prentice Hall PTR, USA, 1999.

[30] K. Godfrey, Perturbation Signals for System Identification. Prentice Hall, UK, 1993.

[31] K. R. Godfrey, "Introduction to binary signals used in system identification," in Proc. International Conference on Control, 1991, pp. 161-166.

[32] A. Tan and K. Godfrey, "The generation of binary and near-binary pseudo-random signals: An overview," IEEE Trans. on Instrumentation and Measurement, vol. 51, no. 4, pp. 583-588, 2002.

[33] K. R. Godfrey, "Introduction to non-binary signals used in system identification," in Proc. International Conference on Control, 1991, pp. 550-555.

[34] D. Wulich, "Comments on the peak factor of sampled and continuous signals," IEEE Communications Letters, vol. 4, no. 7, pp. 213-214, 2000.

[35] S. Golomb, Shift Register Sequences. San Fransisco, Holden-Day, 1967.

[36] R. Lang, M. Hutchison, and H. Yee, "Microprocessorbased identification system applied to synchronous generators with voltage regulators," Proc. IEE on Generations, Transmissions and Distribution, vol. 130, pp. 257-265, 1983.

[37] S. Lesecq and A. Barraud, "A PRBS with exactly zero correlation and its application," in Proc. 16th Mediterranean Conference on Control and Automation, 2008, pp. 724-728.

[38] T. Roinila, M. Vilkko, and A. Taskinen, "Improved fast frequency response measurement of switched-mode power supplies using Dirac-ideal PRBS excitation," in Proc. International Conference on Adaptive Science and Technology, 2009, pp. 175-181.

[39] R. Pintelon and J. Schoukens, System Identification - A Frequency Domain Approach. Institute of Electrical and Electronics Engineers, Inc., 3 Park Avenue, New York, 2001.