High performance operation for a four-leg NPC inverter with two-sample-ahead predictive control strategy

Abstract In this paper is proposed a finite control-set model predictive control (FCS-MPC) strategy which uses a two-sample-ahead prediction horizon to achieve high-performance operation for a three-phase four-leg neutral-point-clamped (NPC) inverter with an output LC filter. The control strategy is proposed in order to minimize the error between the output voltages and their references, maintain equal voltage among the dc-link capacitors, and reduce the overall switching frequency of the inverter. One-sample-ahead and two-sample-ahead prediction horizon are evaluated and compared in terms of reference tracking error and THD, under steady-state and transient operating conditions with linear and non-linear loads. The experimental results demonstrate that the proposed two-sample-ahead prediction horizon is more suitable for high power applications where lower switching frequency operation is mandatory.

[1]  M. R. Ramteke,et al.  Three-level NPC inverter based new DSTATCOM topologies and their performance evaluation for load compensation , 2014 .

[2]  M. Rivera,et al.  A simple and effective solution for superior performance in two-level four-leg voltage source inverters: Predictive voltage control , 2010, 2010 IEEE International Symposium on Industrial Electronics.

[3]  Jamel Belhadj,et al.  New control method of a robust NPC converter for renewable energy sources grid connection , 2012 .

[4]  Jorge Pontt,et al.  Predictive Control of a Three-Phase Neutral-Point-Clamped Inverter , 2007, IEEE Transactions on Industrial Electronics.

[5]  M. Rivera,et al.  Predictive current control and DC-link capacitor voltages balancing for four-leg NPC inverters , 2013, 2013 IEEE International Symposium on Industrial Electronics.

[6]  R. Kennel,et al.  Using a weighting factor table for FCS-MPC of induction motors with extended prediction horizon , 2012, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society.

[7]  José R. Rodríguez,et al.  A Survey on Neutral-Point-Clamped Inverters , 2010, IEEE Transactions on Industrial Electronics.

[8]  M. A. Rodriguez,et al.  Voltage balancing control in 3-Level Neutral-Point Clamped inverters using triangular carrier PWM modulation for FACTS applications , 2011, Proceedings of the 2011 14th European Conference on Power Electronics and Applications.

[9]  Bin Wu,et al.  Model Predictive Current Control of Two-Level Four-Leg Inverters—Part II: Experimental Implementation and Validation , 2013, IEEE Transactions on Power Electronics.

[10]  Sonia F. Pinto,et al.  HVDC transmission systems: Bipolar back-to-back diode clamped multilevel converter with fast optimum , 2011 .

[11]  Bin Wu,et al.  Model Predictive Approach for a Simple and Effective Load Voltage Control of Four-Leg Inverter With an Output $LC$ Filter , 2014, IEEE Transactions on Industrial Electronics.

[12]  Cesar Silva,et al.  Delay Compensation in Model Predictive Current Control of a Three-Phase Inverter , 2012, IEEE Transactions on Industrial Electronics.

[13]  Marian P. Kazmierkowski,et al.  State of the Art of Finite Control Set Model Predictive Control in Power Electronics , 2013, IEEE Transactions on Industrial Informatics.

[14]  C. Bharatiraja,et al.  Hysteresis Current Controller based Transformerless Split Inductor-NPC - MLI for Grid Connected PV- System , 2013 .

[15]  Tobias Geyer,et al.  Generalized Model Predictive Direct Torque Control: Long prediction horizons and minimization of switching losses , 2009, Proceedings of the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese Control Conference.

[16]  Bruno Allard,et al.  A predictive current control applied to a permanent magnet synchronous machine, comparison with a classical direct torque control , 2008 .

[17]  Bin Wu,et al.  Model Predictive Current Control of Two-Level Four-Leg Inverters—Part I: Concept, Algorithm, and Simulation Analysis , 2013, IEEE Transactions on Power Electronics.

[18]  Jin Li,et al.  Modeling, Analysis, and Mitigation of Load Neutral Point Voltage for Three-Phase Four-Leg Inverter , 2013, IEEE Transactions on Industrial Electronics.

[19]  Santiago A. Verne,et al.  Active power filter for medium voltage networks with predictive current control , 2010 .

[20]  Patricio Cortes,et al.  Predictive Control of Power Converters and Electrical Drives: Rodriguez/Predictive Control of Power Converters and Electrical Drives , 2012 .

[21]  Kai Sun,et al.  A Family of Neutral Point Clamped Full-Bridge Topologies for Transformerless Photovoltaic Grid-Tied Inverters , 2013, IEEE Transactions on Power Electronics.

[22]  M. Rivera,et al.  Enhanced model predictive voltage control of four-leg inverters with switching frequency reduction for standalone power systems , 2012, 2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC).

[23]  S. Jeevananthan,et al.  FPGA based practical implementation of NPC-MLI with SVPWM for an autonomous operation PV system with capacitor balancing , 2014 .

[24]  A.M. Hava,et al.  A novel neutral point potential stabilization technique using the information of output current polarities and voltage vector , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[25]  Leopoldo García Franquelo,et al.  Model Predictive Control of an Inverter With Output $LC$ Filter for UPS Applications , 2009, IEEE Transactions on Industrial Electronics.

[26]  Bin Wu,et al.  Model predictive control of three-phase four-leg neutral-point-clamped inverters , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[27]  Mehdi Narimani,et al.  Finite State Model-based Predictive Current Control with Two-step Horizon for Four-leg NPC Converters , 2014 .