Model Predictive Control Method With NP Voltage Balance by Offset Voltage Injection for Three-Phase Three-Level NPC Inverter
Tóm tắt
This paper proposes a predictive control method with offset voltage injection for achieving a neutral point (NP) voltage balance of three-phase three-level neutral point clamped (NPC) inverter, without employing a weighting factor. In order to ensure the proper and reliable operation of the NPC inverter, the NP voltage balance should be regulated in addition to the sinusoidal output current. The conventional predictive control methods for NPC has suffered from tedious weighting factor selection. Besides, when the converter's parameters value and control condition changes, it is cumbersome to empirically redesign the weighting factor. Therefore, the proposed predictive control method without the weighting factor can successfully maintain the balance of NP voltage by utilizing an offset voltage, which is determined according to the difference between the upper and lower capacitor voltages. As a result, the proposed algorithm using the offset voltage injection can control the output currents and maintain the balance of NP voltage. Simulation and experiments are presented to prove the validity of the NP voltage balancing of the proposed control method.
Từ khóa
#Neutral point clamped (NPC) inverter #predictive control method #neutral point (NP) voltage balance #offset voltage injectionTài liệu tham khảo
10.1109/TPEL.2012.2210248
10.1049/iet-epa.2015.0620
10.1109/TPEL.2015.2416207
10.1109/JESTPE.2018.2849320
10.1109/TPEL.2017.2691776
10.3390/app10155149
10.1109/ACCESS.2019.2952189
10.1109/TII.2018.2815035
10.1109/TPEL.2018.2880906
10.1109/TIE.2018.2833055
10.1109/TPEL.2019.2898419
10.1109/TPEL.2013.2248172
10.1109/TPWRD.2016.2524648
10.1109/TMAG.2012.2198912
10.1109/TIA.2014.2387473
10.1109/TIA.2005.858283
10.1109/TEC.2013.2257786
10.1049/iet-est.2013.0021
10.1109/TPEL.2005.869755
10.1080/00207217.2017.1382006
10.1109/TPEL.2014.2304719
10.1109/TIE.2007.899854
10.1109/TENCON.2000.893703
10.1109/TII.2015.2463757
10.1109/TPEL.2014.2362762
lai, 1996, Multilevel converters—A new breed of power converters, IEEE Trans Ind Appl, 32, 509, 10.1109/28.502161
10.1109/TPEL.2018.2789455
10.1109/TPEL.2015.2438779
10.1049/pe:19940311
10.1109/TIA.1981.4503992
10.1109/2943.541241
10.3390/en11123524
10.1109/TII.2016.2603922
10.1109/TPEL.2016.2522977
10.1109/TIA.2014.2350079
10.1109/JESTPE.2018.2830783
10.1109/TIE.2016.2530038
10.1109/TPEL.2015.2439689