IMPLEMENTATION OF NEW H- BRIDGE MULTILEVEL INVERTER USING A COMBINATION OF HIGH FREQUENCY AND LOW FREQUENCY MODULATION

A. MAHESWARI, I GNANAMBAL
473 717

Abstract


This paper proposes a seven level inverter with photovoltaic system, for stand-alone applications with hybrid PWM control scheme. Three carrier signals that are identical to each other which are compared with unidirectional sinusoidal reference signal were used to generate the PWM signals. In this paper, a new topology with a combination of low frequency and high frequency switches is proposed to improve the performance of a multilevel inverter. This topology requires fewer components compared to existing inverters and requires fewer carrier signals and gate drives. Therefore, the overall cost and complexity are greatly reduced. The performance of proposed multilevel inverter with equal dc sources is simulated by using MATLAB platform. Harmonic analysis is done on H-Bridge seven level inverter and experimental results are presented to demonstrate the superiority of the proposed system.


Keywords


Equal dc sources, Fundamental frequency switching scheme, multilevel inverter, PWM, Total

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References


Malinowski M, Gopakumar K, Jose Rodri- guez & Marcelo A Perez, A survey on Cas- caded Multilevel inverters, IEEE Trans Ind Elect, 57 (2010) 2197 – 2206.

J. S. Lai and F. Z. Peng, “Multilevel con- verters—A new breed of power converters”, IEEE Trans.Ind. Applicat., vol.32, no.3, pp. 509–517, May/June 1996.

L.M. Tolbert, F. Z. Peng, and T. G. Habetler, “Multilevel converters for large electric drives”, IEEE Trans. Ind. Applicat. vol.35, no. 1, pp.36–44, Jan./Feb. 1999.

M. Klabunde, Y. Zhao, and T. A. Lipo, “Cur- rent control of a 3 level rectifier/inverter drive system”, in Conference Record 1994 IEEE IAS Annual Meeting, 1994, pp. 2348–2356.

W. Menzies, P. Steimer, and J. K. Steinke, “Five-level GTO inverters for large induc- tion motor drives”, IEEE Transactions on Industry Applications, vol. 30, no. 4, pp. 938–944,July 1994.

G. Sinha and T. A. Lipo, “A four level rectifi- er-inverter system for drive applications”, in Conference Record IEEE IAS Annual Meet- ing, October 1996, pp. 980–987.

J. K. Steinke, “Control strategy for a three phase AC traction drive with three level GTO PWM inverter”, in IEEE Power Elec- tronic Specialist Conference (PESC),1988, pp.431– 438.

J. Zhang, “High performance control of a three level IGBT inverter fed AC drive”, in Conf.Rec.IEEE IAS Annual Meeting, 1995, pp. 22–28.

M.Calais and V.G. Agelidis,”Multilevel converters for single-phase grid connect- ed photovoltaic systems- An overview,”in proc. IEEE Int. Symp. Ind. Electron., 1998, vol.1,pp.224-229.

S.B.Kajaer,J.K. Pedersen,and F.Blaanjerg,”A review of single-phase grid connected invert- ers for photovoltaic modules,”IEEE Trans. Ind.Appl.,vol, 41, no.5,pp. 1292-1306,Sep/ Oct. 2005.

Hurng-LiahngIou,Wen-Iung Chiang, et al, “Voltage- mode grid-connected solar invert- er with high frequency isolated transformer”, IEEE International Symposium on Industri- alElectronics, 2009 ,pp.1087-1092.

Xianglian Xu ,Qing Zhang,Qian Cheng, Youxin Yuan,Yiping Xiao. “An Auto-distur- bance Rejection Controller for STATCOM Based on Cascaded Multilevel Inverters”, 2009 IEEE 6th International Power Electron- ics and Motion Control Conference, Wuhan, China,DS11.4, 2349- 2353.

Manjrekar MD, Lipo TA. “A hybrid multi- level inverter topology for drive applica- tions”,Proc IEEE Int Conf 1998; 2:523–9.

Manjrekar MD, Steimer PK, Lipo TA. “Hy- brid multilevel power conversion system: a competitive solution for high-power ap- plications”, IEEE Trans Ind Appl 2000; 36(3):834–841.

Marchesoni M, Tenca P. “Diode-clamped multilevel converters: a practicable way to balance DC-link voltages”, IEEE Trans Ind Electron 2002; 49(4): 752– 65.

T. J. Kim, D. W. Kang, Y. H. Lee, and D. S. Hyun, “The analysis of conduction and switching losses in multi-level inverter sys- tem,” in Proc. 32nd Power Electron. Spec. Conf.Appl.,2001,pp. 1363–1368.

A. M. Massoud, S. J. Finney, and B. W. Wil- liams, “Multilevel converters and series con- nection of IGBT evaluation for high-power, high-voltage applications,” in Proc. 2nd Power Electron., Mach. Drives Conf., 2004, pp. 1–5.

S. Bernet, D. Krug, S. S. Fazel, and K. Jalili, “Design and comparison of 4.16 kV neutral point clamped, flying capacitor and series connected H-bridge multi-level converters,” in Conf. Rec.40th IEEE IAS Annu. Meeting, 2005, pp. 121–128.

S. S. Fazel, S. Bernet, D. Krug, and K. Jalili, “Design and comparison of 4-kV neutral- point- clamped, flying - capacitor, ad series- connected H-bridge multilevel inverters,” IEEE Trans. Ind. Appl., vol.43, no. 4, pp. 1032–1040, Jul. 2007.

J. Rodríguez, S. Bernet, B. Wu, J. O. Pontt, and S. Kouro, “Multilevel voltage-source-con- verter topologies for industrial medium-volt- age drives,” IEEE Trans. Ind. Electron., vol. 54, no.6,pp. 2930–2945, Dec. 2007.

D. Krug, S. Bernet, S. S. Fazel, K. Jalili, and M. Malinowski, “Comparison of 2.3- kV medium-voltage multilevel convert- ers for industrial medium-voltage drives,” IEEE Trans. Ind.Electron., vol. 54, no. 6, pp. 2979–2992, Dec. 2007.

D. A. B. Zambra, C. Rech, and J. R. Pinhei- ro, “Selection of DC sources for three cells cascaded H-bridge hybrid multilevel inverter applied to medium voltage induction mo- tors,” in Proc.8th Brazilian Power Electron. Conf., 2005, pp. 211–216.

D. A. B. Zambra, C. Rech, and J. R. Pinheiro, “A comparative analysis between the sym- metric and the hybrid asymmetric nine-level series connected H-bridge cells inverter,” in Proc.12th Eur.Conf. Power Electron. Appl., 2007, pp. 1–10.

A. Maheswari and I. Gnanambal, “A novel cascaded H- bridge Multilevel Inverter based on optimal PWM technique”, IU-JEEE, vol. 13, no. 1, pp 1613-1621, Sep. 2013.

A.Maheswari was born in

Tamilnadu, India, on April

7, 19 She received her

B.E degree in Electrical and

Electronics Engineering

from V.M.K.V Engineering

College, Salem, in 2004, the

M.E degree in Power Elec

tronics and Drives from Government College of

Engineering, Salem, in 2008. Currently she is pur

suing Ph.D. She has presented 7 papers in various

national and international conferences. She has

also published six papers in the international jour

nal. Her current research interests include simula

tion and control techniques of AC drives, inverter

topologies and harmonic suppression.

Dr. I. Gnanambal was born

in Tamilnadu, India. She re

ceived her B.E degree in

Electrical and Electronics

Engineering from Govern

ment College of Engineering,

Salem, in 1981, the M.E de

gree in Applied Electronics

in Government College of Technology, Coim

batore, in 2002 and Ph.D. degree in Networking

from Anna University, Chennai in 2008. She has

presented more than 60 papers in various national

and international conferences. She has also pub

lished more than fifteen papers in international

journals. Her research interests include power

electronics, solid state drives, networking and

special electrical machines.