TY - GEN
T1 - A Comparison of a Discrete-Time PI and an Indirect MPC Current Controllers for a Single-Phase Grid-Connected Inverter Operating with Distorted Grid and Significant Computation Feedback Delay
AU - Pimentel, Sergio Pires
AU - Husev, Oleksandr
AU - Vinnikov, Dmitri
AU - Stepenko, Serhii
AU - Kutt, Lauri
AU - Rodriguez, Jose
N1 - Funding Information:
ACKNOWLEDGMENT Co-authors O. Husev and D. Vinnikov was supported by the Estonian Research Council (grant PUT1443) and by the Estonian Centre of Excellence in Zero Energy and Resource Efficient Smart Buildings and Districts (ZEBE), grant 2014-2020.4.01.15-0016 funded by the European Regional Development Fund. Besides, co-author S. Stepenko was supported by the Estonian Research Council (grant MOBJD126) and co-author J. Rodriguez acknowledges the support of Conicyt through projects FB 0008 and 1170167.
PY - 2019/12
Y1 - 2019/12
N2 - In this paper, one technical gap related to the indirect model predictive control (MPC) is discussed. This technical gap corresponds to the performance of such a controller to deal with distorted grid voltages and a significant computation delay through the feedback regulation loop. A basic case study involving a traditional 3-level h-bridge and a first-order output filter was considered in order to magnify the effect of time horizon prediction and voltage over the regulated grid current waveform. A comparison related to the covered MPC controller (in two different forms) and a classical discrete-time proportional-integral (PI) controller is performed by means of the achieved total harmonic distortion (THD) values. Simulation results from a model built on PSIM/Powersim are presented and discussed. It can be concluded that the MPC controller offers a wider operating range with stable conditions and lower measured values of THD from regulated grid current. And such kind of special feature becomes even more evident if a significant computation delay at the feedback control loop must be overtaken.
AB - In this paper, one technical gap related to the indirect model predictive control (MPC) is discussed. This technical gap corresponds to the performance of such a controller to deal with distorted grid voltages and a significant computation delay through the feedback regulation loop. A basic case study involving a traditional 3-level h-bridge and a first-order output filter was considered in order to magnify the effect of time horizon prediction and voltage over the regulated grid current waveform. A comparison related to the covered MPC controller (in two different forms) and a classical discrete-time proportional-integral (PI) controller is performed by means of the achieved total harmonic distortion (THD) values. Simulation results from a model built on PSIM/Powersim are presented and discussed. It can be concluded that the MPC controller offers a wider operating range with stable conditions and lower measured values of THD from regulated grid current. And such kind of special feature becomes even more evident if a significant computation delay at the feedback control loop must be overtaken.
KW - Discrete-time Systems
KW - Distributed Power Generation
KW - Industrial Applications
KW - Power Electronics
KW - Predictive Control
UR - http://www.scopus.com/inward/record.url?scp=85084919786&partnerID=8YFLogxK
U2 - 10.1109/COBEP/SPEC44138.2019.9065396
DO - 10.1109/COBEP/SPEC44138.2019.9065396
M3 - Conference contribution
AN - SCOPUS:85084919786
T3 - 2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference, COBEP/SPEC 2019
BT - 2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference, COBEP/SPEC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th IEEE Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference, COBEP/SPEC 2019
Y2 - 1 December 2019 through 4 December 2019
ER -