Open AccessThree-Level Inverter Control Techniques: Design, Analysis, and Comparisons
Author(s) -
Dan Selişteanu,
Monica Roman,
Lucian Mandache,
Răzvan Prejbeanu,
Sergiu Ivanov,
Alexandru Radu
Publication year - 2021
Publication title -
elektronika ir elektrotechnika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.224
H-Index - 26
eISSN - 2029-5731
pISSN - 1392-1215
DOI - 10.5755/j02.eie.29015
Subject(s) - pid controller , inverter , converters , control theory (sociology) , controller (irrigation) , control engineering , power (physics) , asynchronous communication , computer science , engineering , electronic engineering , voltage , control (management) , electrical engineering , temperature control , computer network , agronomy , physics , quantum mechanics , artificial intelligence , biology
This work addresses the analysis and design of various Proportional-Integral-Derivative (PID) control techniques for a three-level inverter. Multilevel power converters are modern and basic elements of high-voltage electric drive and power supply systems. By using simulations and specific computer-aided design tools, the overall functional characteristics of multilevel converters, as well as the electrical demands of the components, can be accurately assessed to obtain an appropriate control solution. An innovative and detailed software model of a three-level inverter is developed and then used for the implementation of control techniques. Several tuning methods are used to tune PID controllers for two specific cases: the multilevel inverter with a linear load and with an asynchronous motor load, respectively. A detailed analysis and comparisons of the quality criteria and control performance are achieved. This analysis shows that the choice of controller type depends on the inverter load. For the linear load, proper results are obtained with a PI Nichols-tuned controller, and for the asynchronous load, with a PI controller tuned via a modified Hokushin method. The computer-aided design tools can be further used for the simulation of the equipment in various operating conditions, normal and fault, following all functional parameters.