Effect of Flaying Capacitors on Improving the 4 Level Three-Cell Inverter

With the rapid advanced of technology, the industrial processes become increasingly demanding, from the point of view, power quality and controllability. The advent of multi levels inverters responds partially to these requirements. But actually, the new generation of multi-cells inverters permits to reach more performances, since, it offers more voltage levels. The disadvantage in the increase of voltage levels by the number of cells in cascades is on account of series igbts synchronisation loss, from where, a limitation of cells in cascade to 4. Regarding to these constraints, a new topology is proposed in this paper, which increases the voltage levels of the three-cell inverter from 4 to 8; with the same number of igbts, and using less stored energy in the flaying capacitors. The details of operation and modelling of this new inverter structure are also presented, then tested thanks to a three phase induction motor. KeywordsFlaying capacitors, Multi-cells inverter, pwm, switchers, modelling.

Authors:

• Kelaiaia Mounia Samira
• Labar Hocine
• Bounaya Kamel
• Kelaiaia Samia

Keywords:

• Flaying capacitors
• Multi-cells inverter
• pwm
• switchers
• modelling.

References:

[1] Pérez-tom├ís, x. Jord├á, p. Godignon, j. L. G├ílvez, m. Vellveh├¡ and j.
Millán igbt gate driver ic with full-bridge output stage using a modified
standard cmos process microelectronics journal, volume 35, issue 8,
august 2004, pages 659-666.
[2] Said barkati, lotfi baghli, el madjid berkouk and mohamed-seghir
boucherit harmonic elimination in diode-clamped multilevel inverter
using evolutionary algorithms electric power systems research volume
78, issue 10, october 2008, pages 1736-1746.
[3] J. Rodriguez, j.-s. Lai, and f. Z. Peng, "multilevel inverters: a survey of
topologies, controls, and applications," ieee trans. Ind. Electron., vol.
49, no. 4, pp. 724-738, aug. 2002.
[4] X. Xu, y. Zou, k. Ding, and f. Liu, "cascade multilevel inverter with
phase-shift spwm and its application in statcom," in proc. Ieee iecon,
2004, vol. 2, pp. 1139-1143.
[5] J. N. Chiasson, l. M. Tolbert, k. J. Mckenzie, and z. Du, "elimination of
harmonics in a multilevel converter using the theory of symmetric
polynomials and resultants," ieee trans. Control syst. Technol., vol. 13,
no. 2, pp. 216-223, mar. 2005.
[6] defay, f.; llor, a.m.; fadel, m.a direct predictive control of shunt active
power filters using multicell converter, 2007 european conference on
power electronics and applications volume , issue , 2-5 sept. 2007 pp:1 -
9.
[7] J. M. Carrasco, l. G. Franquelo, j. T. Bialasiewicz, e. Galvan, r. C.
Portilloguisado, m. A. M. Prats, j. I. Leon, and n.moreno-alfonso,
"power-electronic systems for the grid integration of renewable
energysources: a survey," ieee trans. Ind. Electron., vol. 53, no. 4, pp.
1002- 1016, jun. 2006.
[8] H. Ertl, j. W. Kolar, and f. C. Zach, "a novel multicell dc-ac converter
for applications in renewable energy systems," ieee trans. Ind.
Electron.,vol. 49, no. 5, pp. 1048-1057, oct. 2002.
[9] R. Beig, u. R. Y. Kumar, and v. T. Ranganathan, "a novel fifteen level
inverter for photovoltaic power supply system," in conf. Rec. 39th ieee
ias annu. Meeting, 2004, pp. 1165-1171.
[10] Anis w. R analysis of a three-level bridge inverter for photovoltaics,
solar cells 1988, vol. 25, no3, pp. 255-263 (10 ref.).
[11] L. M. Tolbert, f. Z. Peng, and t. G. Habetler, "multilevel converters for
large electric drives," ieee trans. Ind. Appl., vol. 35, no. 1, pp. 36-44,
jan./feb. 1999.
[12] Jiang you-hua, cao yi-long and gong you-min, a novel topology of
hybrid multilevel inverter with minimum number of separated dc sources
ieee transactions on industrial electronics, vol. 49, no. 4, august 2002 pp
832 838.
[13] Miaosen shen; joseph alan; jin wang; peng fang z.; adams donald j.
Comparison of traditional inverters and z-source inverter for fuel cell
vehicles ieee transactions on power electronics 2007, vol. 22, no4, pp.
1453-1463.
[14] Demas, l.; meynard, t.a.; foch, h.; gateau, g. Comparative study of
multilevel opologies: npc, multicell inverter and smc with igbt iecon 02,
ieee 2002 28th volume 1, issue, 5-8 nov. 2002 vol.1 pp: 828 - 833.
[15] Hosseini, s.h.; almaleki, m a new online optimal controller for 2-cell
multicell inverter. Tencon 2004. 2004 ieee conference volume d, issue,
21-24 nov. 2004 pp): 85 - 88 vol. 4.
[16] A.k. Al-othman and tamer h. Abdelhamid, elimination of harmonics in
multilevel inverters with non-equal dc sources using pso energy
conversion and management
volume 50, issue 3, March 2009, pages 756-764.
[17] Richardeau, f.; baudesson, ph.; meynard, t failures-tolerance and
remedial strategies of a pwm multicellinverter. Power electronics
specialists conference, 2000. Pesc 00. 2000 ieee 31st annual volume 2,
issue, 2000 page(s):649 - 654 vol.2.
[18] F. Richardeau, p. Baudesson, t. Meynard and c. Turpin fail-safe
capability of a high voltage igbt inverter source eur. Phys. J. Ap 15,
189-198 (2001).
[19] Lienhardt, a.-m.; gateau, g.; meynard, t.a.stacked multicell converter:
digital sliding mode observation of flying capacitor voltages ieee- 32nd
annual conference on industrial electronics, iecon 2006 volume , issue ,
6-10 nov. 2006 page(s):2115 - 2120.
[20] Mcgrat, b.p.; meynard, t.a.; gateau, g.; holmes, d.g.optimal modulation
of flying capacitor and stacked multicell converters using a state
machine decoder power electronics specialists conference, 2005. Pesc
apos;05. Ieee 36th volume, issue , 16-16 june 2005 page(s):1671 - 1677.
[21] K. L. Shi, t. F. Chan, y. K. Wong, s. L. Ho modelling and simulation of
the three-phase induction motor using simulink international journal of
electrical engineering education; volume 36 issue 2, april 1999, pp 163-
172.
[22] Ragu balanathan, nalin c. Pahalawaththa and udaya d. Annakkage
modelling induction motor loads for voltage stability analysis
international journal of electrical power & energy systems volume 24,
issue 6, august 2002, pages 469-480.