Application of Evolutionary Algorithms for Harmonic Profile Optimization in Symmetric Multilevel Inverter used in Medical Electronic Equipments

Author(s): S. Menaka*, S. Muralidharan.

Journal Name: Current Signal Transduction Therapy

Volume 14 , Issue 1 , 2019

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Abstract:

Background: Inverters are finding applications in electrical field where conversion from Direct Current (DC) to Alternate Current (AC) has become an inevitable option. The need of Multi Level Inverter (MLI) is to provide a high output power from medium voltage source. High power quality is the very basic important requirement for MLI used in medical electronic equipment. Harmonic elimination in MLI is a challenging one and is solved by optimum switching of power electronic switches present in the MLI topology.

Methods: Several control strategies have been proposed for harmonic elimination in multilevel inverters. Newton-Raphson method is the conventional and iterative based method to obtain optimum switching angle to minimize the Total Harmonic Distortion (THD). But it requires an initial guess of switching angles which is very close to the exact solution. To overcome this, harmonic elimination is converted into an optimization task and is solved by using evolutionary algorithms such as Genetic Algorithms (GA) and Particle Swarm Optimization (PSO). GA and PSO offer optimum switching angles to minimize THD and used to increase the robustness of the system.

Results: The performance of proposed symmetric 21 level multilevel inverter with GA and PSO techniques are analysed and the objective of minimum THD is obtained by using MATLABSIMULINK software.In experimental setup, FPGA controller has been used to generate the Pulse Width Modulation (PWM) control signals according to the proposed soft computing based switching strategy. The experimental result is used to verify the ability of the proposed system for the generation of desired output voltage with minimum THD.

Conclusion: The proposed symmetric MLI with evolutionary algorithm based switching is a good choice for medical electronic equipment used in hospital to obtain quality power with minimum THD.

Keywords: Multilevel inverter, Total Harmonic Distortion, Genetic Algorithm (GA), Particle Swarm Optimization (PSO), selective harmonic elimination, evolutionary algorithms, medical electronic equipments.

[1]
Rao U, Singh SN, Thakur CK. Power quality issues with medical electronics equipment in hospital. Proceedings of the International Conference on Industrial Electronics, Control and Robotics (IECR); 2010 Dec 27-29; Orissa, India. IEEE 2011.
[2]
Adamu SS, Muhammad HS, Shuaibu DS. Harmonics assessment and mitigation in medical diagnosis equipment. Proceedings of the 6th International Conference on Awareness Science and Technology (iCAST); 2014 Oct 29-31; Paris, France. IEEE 2014.
[3]
Kulkarni K, Shetty VJ. Power quality issues in healthcare centre. Int J Curr Eng Technol 2014; 4(6): 1806-18.
[4]
Ramos MCG, Tahan CMV. An assessment of the electric power quality and electrical installation impacts on medical electrical equipment operations at health care facilities. Am J Appl Sci 2009; 6(4): 638-45.
[5]
Menaka S, Muralidharan S. Novel symmetric and asymmetric multilevel inverter topologies with minimum number of switches for high voltage of electric ship propulsion system. Indian J Geo-Mar Sci 2017; 46(9): 1920-30.
[6]
Rodríguez J, Lai JS, Peng FZ. Multilevel inverters. A survey of topologies, controls, and applications. IEEE Trans Ind Electron 2002; 49(4): 724-38.
[7]
Lai JS, Peng FZ. Multilevel converters. A new breed of power converters. IEEE Trans Ind Appl 1996; 32: 509-17.
[8]
Tolbert LM, Peng FZ, Habetler T. Multilevel converters for large electric drives. IEEE Trans Ind Appl 1999; 3: 36-44.
[9]
Nami A, Zare F, Ghosh A, Blaabjerg F. A hybrid cascade converter topology with series-connected symmetrical and asymmetrical diode-clamped H-bridge cells. IEEE Trans Power Electron 2011; 26(1): 51-64.
[10]
Babaei E. A cascade multilevel converter topology with reduced number of switches. IEEE Trans Power Electron 2008; 23(6): 2657-64.
[11]
Cegila A, Guzman V, Sanchez C, et al. A new simplified multilevel inverter topology for DC-AC conversion. IEEE Trans Power Electron 2006; 21(5): 1311-9.
[12]
Kangarlu F, Babaei E. A generalized cascaded multilevel inverter using series connection of sub-multilevel inverters. IEEE Trans Power Electron 2013; 28(2): 625-36.
[13]
Babaei E, Alilu S, Laali S. A new general topology for cascaded multilevel inverters with reduced number of components based on developed H-bridge. IEEE Trans Ind Electron 2014; 61(8): 3932-9.
[14]
Mokhberdoran A, Ajami A. Symmetric and asymmetric design and implementation of new cascaded multilevel inverter topology. IEEE Trans Power Electron 2014; 29(12): 6712-24.
[15]
Babaei E, Kangarlu FM, Mazgar NF. Symmetric and asymmetric multilevel inverter topologies with reduced switching devices. Elsevier J Electr Power Syst Res 2012; 86: 122-30.
[16]
Menaka S, Muralidharan S. Design and performance analysis of novel boost DC-AC converter, In IEEE Proceedings of the 3rd International Conference on Electronics Computer Technology (ICECT); Kanyakumari, India, 2011 Apr 8-10.
[17]
Babaei E, Kangarlu FM, Sabahi M, Pahlavani RAM. Cascaded multilevel inverter using sub-multilevel cells. Elsevier J Electr Power Syst Res 2013; 96: 101-10.
[18]
Rashid MH. Power Electronics circuits, devices and applications.In: Multilevel inverters. 3rd ed. India: Pearson Education 2009; pp. 406-29.
[19]
Govindaraju C, Baskaran K. Efficient sequential switching hybrid-modulation techniques for cascaded multilevel inverters. IEEE Trans Power Electron 2011; 26(6): 1639-48.
[20]
Kang DW, Lee YH, Suh BS, et al. An improved carrier based SVPWM method using leg voltage redundancies in generalized cascaded multilevel inverter topology. IEEE Trans Power Electron 2003; 18(1): 180-7.
[21]
Mohan D, Kurub SB. A comparative analysis of multi carrier SPWM control strategies using fifteen level cascaded H-bridge multilevel Inverter. Int J Comput Appl 2012; 41(21): 7-11.
[22]
Tolbert LM, Habetler TG. Novel multilevel inverter carrier-based PWM method. IEEE Trans Ind Appl 1999; 35(5): 1098-107.
[23]
Fan B, Song L, Song S, Fu J. High power factor in three-phase voltage source pulse-width modulation rectifier based on direct power control. Automat Control Syst J 2015; 7: 370-8.
[24]
Banaei MR, Oskuee MRJ, Varzeghan RS, Khezerlu BN. An efficient approach to reduce line voltage THD in a multilevel inverter with alterable dc sources. Recent Adv Electr Electron Eng 2015; 8(1): 4-11.
[25]
Li G, Wang Z. Study on DC/AC conversion device based on equivalent ara method. Recent Adv Electr Electron Eng 2016; 9(3): 223-30.
[26]
Kafalis K, Karlis A. Energy saving in elevators using flywheels or supercapacitors. Recent Adv Electr Electron Eng 2017; 10(1): 60-71.
[27]
Kumar J, Das B, Agarwal P. Selective harmonic elimination technique for a multilevel inverter. Proceedings of the 15th National Power Systems Conference (NPSC); IIT Bombay, India, Dec 16-18 2008.
[28]
Patel HS, Hoft RG. Generalized harmonic elimination and voltage control in thyristor inverters: Part I- Harmonic elimination. IEEE Trans Ind Appl 1973; 3: 310-7.
[29]
Fei W, Zhang Y, Ruan X. Solving the SHE-PWM nonlinear equations for three-level inverter based on computed initial values. Proceeding of 22nd Annual IEEE Applied Power Electronics Conference(APEC). Anaheim, CA, USA. Feb 27 - Mar 1 2007;
[30]
Chiasson JN, Tolbert LM, McKenzie KJ, Zhong Du. Control of a multilevel converter using resultant theory. IEEE Trans Contr Syst Technol 2003; 11(3): 345-54.
[31]
Amjad AM, Salam Z. A review of soft computing methods for harmonic elimination PWM for inverters in renewable energy conversion systems. Elsevier J Renew Sustain Energ Rev 2014; 33: 141-53.
[32]
Ozpineci B, Tolbert LM, Chaisson JN. Harmonic optimization of multilevel converters using genetic algorithms. Proceeding of 35th Annual IEEE Power Electronics Specialist Conference. 2004 June 20-25; Aachen, Germany.
[33]
Letha SS, Thakur T, Kumar J. Harmonic elimination of a photo-voltaic based cascaded H-bridge multilevel inverter using PSO (particle swarm optimization) for induction motor drive. Elsevier J Energ 2016; 107: 335-46.
[34]
Ray RN, Chatterjee D, Goswami SK. An application of PSO technique for harmonic elimination in a PWM inverter. Elsevier J Appl Soft Comput 2009; 9: 1315-20.
[35]
Gupta VK, Mahanty R. Optimized switching scheme of cascaded H-bridge multilevel inverter using PSO. Elsevier J Electr Power Energ Syst 2015; 64: 699-707.
[36]
Salehi R, Farokhnia N, Abedi M, Fathi SH. Elimination of low order harmonics in multilevel inverters using genetic algorithm. J Power Electr 2011; 11(2): 132-9.
[37]
Bindu J, Selvaperumal S, Muralidharan S, Muhaidheen M, Eds. Genetic algorithm based selective harmonic elimination in PWM AC-AC converter. Proceedings of the International Conference on Recent Advancements in Electrical, Electronics and Control Engineering (ICONRAEeCE) 2011 Dec 15-17; Sivakasi, India IEEE 2012
[38]
Selvaperumal S, Rajan CA, Muralidharan S. Stability and performance investigation of a fuzzy- controlled LCL resonant converter in an RTOS Environment. IEEE Trans Power Electron 2013; 28(4): 1817-32.
[39]
Selvaperumal S, Muralidharan S, Pugazhenthi PN, et al. Performance investigation of SHE PWM implementation of GA based LCL resonant inverter in marine applications. Indian J Geo-Mar Sci 2017; 46(9): 1889-98.


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Article Details

VOLUME: 14
ISSUE: 1
Year: 2019
Page: [12 - 20]
Pages: 9
DOI: 10.2174/1574362413666180227142500
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