TY - GEN
T1 - Model predictive control with a fixed switching frequency for an AC-to-AC converter
AU - Tomlinson, Males
AU - Mouton, Toit
AU - Kennel, Ralph
AU - Stolze, Peter
PY - 2013
Y1 - 2013
N2 - This paper discusses the control of an AC-to-AC converter that forms part of an 11 kV electronic voltage regulator. A novel finite-set model predictive control technique is presented to allow fixed frequency switching. A fixed switching period is defined and divided into smaller evaluation steps. The switching behaviour is obtained by using the analogy of PWM with a triangular carrier wave. During the first half of the switching period, the system may only switch from the on-state to the off-state and during the second half, only from the off-state to the on-state. To account for the repetitive nature of the switching waveform, an average receding horizon prediction method is introduced. An anticipated prediction is made by calculating the average value for one switching period ahead, according to the position and state in the current switching period. The method presented good practical results and proved to be effective in maintaining a fixed switching frequency.
AB - This paper discusses the control of an AC-to-AC converter that forms part of an 11 kV electronic voltage regulator. A novel finite-set model predictive control technique is presented to allow fixed frequency switching. A fixed switching period is defined and divided into smaller evaluation steps. The switching behaviour is obtained by using the analogy of PWM with a triangular carrier wave. During the first half of the switching period, the system may only switch from the on-state to the off-state and during the second half, only from the off-state to the on-state. To account for the repetitive nature of the switching waveform, an average receding horizon prediction method is introduced. An anticipated prediction is made by calculating the average value for one switching period ahead, according to the position and state in the current switching period. The method presented good practical results and proved to be effective in maintaining a fixed switching frequency.
UR - http://www.scopus.com/inward/record.url?scp=84877614751&partnerID=8YFLogxK
U2 - 10.1109/ICIT.2013.6505734
DO - 10.1109/ICIT.2013.6505734
M3 - Conference contribution
AN - SCOPUS:84877614751
SN - 9781467345699
T3 - Proceedings of the IEEE International Conference on Industrial Technology
SP - 570
EP - 575
BT - Proceedings - 2013 IEEE International Conference on Industrial Technology, ICIT 2013
T2 - 2013 IEEE International Conference on Industrial Technology, ICIT 2013
Y2 - 25 February 2013 through 28 February 2013
ER -