A Fast and Universal Neuro-Based SVM Algorithm for Multi-Level Converters

This paper proposes a novel, simple and fast classification algorithm for implementation of Space Vector Modulation (SVM) method for a Diode Clamped Multi-level Converter (DCMC) with an arbitrary number of levels. The proposed algorithm is based on a classifier neural network which provides a straightforward and computationally efficient approach without the use of trigonometric calculations or look-up tables to identify (i) the location of reference voltage vector, (ii) its adjacent switching voltage vectors, and (iii) their corresponding on-duration time intervals. The feasibility of the proposed SVM algorithm is validated based on theoretical analysis, simulation studies and experimental tests on a DSP-controlled, 5 kVA, three-level converter system.

[1]  Dushan Boroyevich,et al.  A fast space vector modulation algorithm for multilevel three-phase converters , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[2]  P. Bhagwat,et al.  Generalized Structure of a Multilevel PWM Inverter , 1983, IEEE Transactions on Industry Applications.

[3]  Chang Ho Choi,et al.  A new simplified space-vector PWM method for three-level inverters , 2001 .

[4]  Leon M. Tolbert,et al.  Multilevel converters as a utility interface for renewable energy systems , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[5]  B.K. Bose,et al.  A neural-network-based space vector PWM of a five-level voltage-fed inverter , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[6]  Lipei Huang,et al.  Fundamental characteristics of five-level double converters with adjustable dc voltages for induction motor drives , 2002, IEEE Trans. Ind. Electron..

[7]  Dushan Boroyevich,et al.  Voltage-balance limits in four-level diode-clamped converters with passive front ends , 2005, IEEE Transactions on Industrial Electronics.

[8]  Fang Zheng Peng,et al.  Multilevel inverters: a survey of topologies, controls, and applications , 2002, IEEE Trans. Ind. Electron..

[9]  D. Boroyevich,et al.  A novel SVM algorithm for multilevel three-phase converters , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[10]  G. Joos,et al.  Incorporating the overmodulation range in space vector pattern generators using a classification alg , 1997 .

[11]  J. Espinoza,et al.  A combined artificial neural network and DSP approach to the implementation of space vector modulation techniques , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[12]  Holmes,et al.  Pulse width modulation for power converters , 2003 .

[13]  Leon M. Tolbert,et al.  Multilevel converters for large electric drives , 1999 .

[14]  M. Prats,et al.  New space vector modulation algorithms applied to multilevel converters with balanced DC-link voltage , 2005 .

[15]  B.K. Bose,et al.  A neural network based space vector PWM controller for a three-level voltage-fed inverter induction motor drive , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[16]  S. Bifaretti,et al.  Implementation on a microcontroller of a space vector modulation technique for NPC inverters , 2004, 2004 IEEE International Symposium on Industrial Electronics.

[17]  D. Boroyevich,et al.  Efficient Space-Vector Modulation Algorithm for Multilevel Converters with Low Switching Frequencies in the Devices , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[18]  Fang Zheng Peng,et al.  Multilevel converters-a new breed of power converters , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[19]  R. Portillo,et al.  New fast space-vector modulation for multilevel converters based on geometrical considerations , 2002, IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02.