Low-Frequency Harmonic Elimination Technique in Cascaded H-Bridges Multilevel Inverters for Renewable Energy Applications

Concettina Buccella, Maria Gabriella Cimoroni, Carlo Cecati

Abstract


This paper proposes a fundamental frequency selective harmonic elimination (SHE) technique for medium and high power three phase cascaded H-bridges (CHB) l-level inverters, where low switching frequency assumes an important role. Respect to classical SHE methods, it is capable to delete more harmonics from the output voltage waveform and to provide lower total harmonic distortion (THD) values. A mathematical proof is given to demostrate that the undeleted harmonics are only those of order n = 2k (l + r) ± 1, k = 1, 2, . . . where r is an integer parameter that assumes the values −2, −1, 0 defining three different sets of switching angles, that are provided in the whole range of modulation index. The method assumes different dc voltage sources and pulses patterns, defined for the three sets of switching angles. Simulated results are shown to confirm the validity of the proposed procedure. For l = 5 and l = 7, the results obtained are compared with those carried out by applying the classical SHE technique at the same conditions. Very good performances, in terms of number of deleted harmonics and THD, are observed when r = 0. In comparison to classical SHE, the proposed method reduces computational complexity because it must not solve non linear equations.


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References


H. Abu-Rub, J. Holtz, J. Rodriguez, and G. Baoming, “Medium-voltage multilevel converters—State of the art, challenges, and requirements in industrial applications,†IEEE Trans. Ind. Electron., vol. 57, no. 8, pp. 2581–2596, Aug. 2010.

R. Teodorescu, F. Blaabjerg, J. K. Pedersen, E. Cengelci, and P. N. En- jeti, “Multilevel inverter by cascading industrial VSI,†IEEE Trans. Ind. Electron., vol. 49, no. 4, pp. 832–838, Aug. 2002.

K. K. Gupta and S. Jain, “A novel multilevel inverter based on switched DC sources,†IEEE Trans. Ind. Electron., vol. 61, no. 7, pp. 3269–3278, July

A. K. Rathore, J. Holtz, and T. Boller, “Generalized optimal pulsewidth modulation of multilevel inverters for low-switching-frequency control of

medium-voltage high-power industrial AC drives,†IEEE Trans. Ind. Electron., vol. 60, no. 10, pp. 4215–4224, Oct. 2013.

F. Viola, V. Castiglia, G. Schettino, C. Cecati, C. Buccella, M. Cimoroni, R. Miceli, “Mixed Harmonic Elimination Control for a Single-Phase 9-Level Grid-Connected Inverter†Int. Conf. on Smart Grids ( icSmartGrids ), Nagasaki Prefectural Art Museum, Nagasaki, Japan, Dec. 4 -6, 2018.

. Babaei and S. H. Hosseini, “New cascaded multilevel inverter topology with minimum of switches,†Energy Convers. Manage. , vol. 50, no. 4, pp. 2761–2767, 2009.

D. N. R. S. Alishah and S. H. Hosseini, “Novel topologies for sym- metric, asymmetric, and cascade switched-diode mutilevel converter with minimum number of power electronic components,†IEEE Trans. Ind. Electron., vol. 61, no. 10, pp. 5300–5310, Oct. 2014.

R. S. Alishah and D. Nazarpour, “New hybrid structure for multilevel inverter with fewer number of components for high-voltage levels,†IET Power Electron., vol. 7, no. 1, pp. 96–104, 2013.

E. Babaei, S. H. Hosseini, G. B. Gharehpetian, M. T. Haque, and M. Sabahi, “Reduction of dc voltage sources and switches in asymmetrical multilevel converters using a novel topology,†Elect. Power Syst. Res., vol. 77, no. 8, pp. 1073–1085, 2007.

B. P. McGrath and D. G. Holmes, “Multicarrier PWM strategies for mul- tilevel inverters,†IEEE Trans. Ind. Electron., vol. 49, no. 4, pp. 858–867, Aug. 2002.

B. N. Roodsari and E. P. Nowicki, “Fast space vector modulation algorithm for multilevel inverters and its extension for operation of the cascaded H-bridge inverter with non-constant DC sources,†IET Power Electron., vol. 6, no. 7, pp. 1288–1298, 2013.

C. Buccella, C. Cecati, M. G. Cimoroni, K. Razi, “Analytical method for pattern generation in five-level cascaded H-bridge inverter using selective harmonic elimination,†IEEE Trans. Ind. Electron., vol. 61, no. 11, pp. 5811-5819, Nov. 2014.

M. Ahmed, A. Sheir, and M. Orabi, “Real-Time Solution and Implementation of Selective Harmonic Elimination of Seven-Level Multilevel Inverter,†IEEE Journal of Emerg. and Select. topic in Pow. Elec., vol. 5, no. 4, pp. 1700 - 1709, Dec. 2017.

C. Buccella, C. Cecati, M. G. Cimoroni, G. Kulothungan, A. Edpuganti, A. Kumar Rathore, â€A Selective Harmonic Elimination Method for Five-Level Converters for Distributed Generation,†IEEE Journal of Emerg. and Select. topic in Pow. Elec., vol. 5, no. 2, pp. 775 - 783, June 2017.

A. Shukla, A. Ghosh, and A. Joshi, “Hysteresis modulation of multilevel inverters,†IEEE Trans. Power Electron., vol. 26, no. 5, pp. 1396–1409, May 2011.

S. Gautam and R. Gupta, “Switching frequency derivation for the cas- caded multilevel inverter operating in current control mode using multiband hysteresis modulation,†IEEE Trans. Power Electron., vol. 29, no. 3, pp. 1480–1489, Mar. 2014.

R. Gupta, A. Ghosh, and A. Joshi, “Multi-band hysteresis modulation and switching characterization for sliding mode controlled cascaded multi- level inverter,†IEEE Trans. Ind. Electron., vol. 57, no. 7, pp. 2344–2353, Jul. 2010.

M. Sharifzadeh, H. Vahedi, C. Cecati, C. Buccella, K. Al-Haddad, “A generalized formulation of SHM-PAM for cascaded H-bridge inverters with non-equal DC sources,†IEEE Int. Conf. on Ind. Technology (ICIT17), pp. 18 - 23, Toronto, Canada, March 22 - 25, 2017.

P. L. Kamani and M.A. Mulla, “Middle-level SHE Pulse-Amplitude Modulation for Cascaded Multilevel Inverters,†IEEE Trans. Ind. Electron., vol. 65, no. 3, pp. 2828-2833, March 2018.

C. Buccella, M.G. Cimoroni, M. Tinari, C. Cecati, “A new pulse active width modulation (PAWM) for multilevel converters,†IEEE Transactions on Power Electronics, 2018, (Early Access).

M. G. Cimoroni, M. Tinari, C. Buccella, C. Cecati, “A high efficiency Selective Harmonic Elimination technique for multilevel converters,†2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), Amalfi, Italy, pp. 673-677, 20-22 June 2018.

Matlab 7.13 (R2011b) software package, http://www.Mathworks.com. IEEE Journal of Emerg. and Select. topic in Pow. Elec., vol. 5, no. 2, pp. 775 -783, June 2017.




DOI (Invited Paper PDF): https://doi.org/10.20508/ijsmartgrid.v3i1.41.g39

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