TY - JOUR
T1 - Heuristic Model Predictive Modulation for High-Power Cascaded Multilevel Converters
AU - Townsend, Christopher D.
AU - Baraciarte, Roberto A.
AU - Yu, Yifan
AU - Tormo, Daniel
AU - De La Parra, Hector Zelaya
AU - Demetriades, Georgios D.
AU - Agelidis, Vassilios G.
PY - 2016/8/1
Y1 - 2016/8/1
N2 - Phase-shifted carrier modulation is an industry standard in its application to multilevel H-bridge converters. The major advantage of this scheme over level-shifted and space vector modulation schemes is its inherent ability to evenly distribute losses between semiconductor devices. However, phase-shifted schemes suffer from harmonic degradation when operated at the low carrier frequencies required in high-power high-level number applications. This paper develops a model predictive modulation (MPM) scheme that achieves superior harmonic performance, compared to phase-shifted modulation, while ensuring equal semiconductor loss distribution. With respect to complete-enumeration-based predictive techniques, the proposed modulation significantly reduces the number of times the system cost function is evaluated. Reducing the number of calculations by several orders of magnitude ensures computational feasibility. Simulation and experimental results are presented, which confirm correct operation of the modulation strategy.
AB - Phase-shifted carrier modulation is an industry standard in its application to multilevel H-bridge converters. The major advantage of this scheme over level-shifted and space vector modulation schemes is its inherent ability to evenly distribute losses between semiconductor devices. However, phase-shifted schemes suffer from harmonic degradation when operated at the low carrier frequencies required in high-power high-level number applications. This paper develops a model predictive modulation (MPM) scheme that achieves superior harmonic performance, compared to phase-shifted modulation, while ensuring equal semiconductor loss distribution. With respect to complete-enumeration-based predictive techniques, the proposed modulation significantly reduces the number of times the system cost function is evaluated. Reducing the number of calculations by several orders of magnitude ensures computational feasibility. Simulation and experimental results are presented, which confirm correct operation of the modulation strategy.
KW - Control strategy
KW - modulation strategy
KW - multilevel converters
KW - StatCom
KW - voltage balancing
UR - http://www.scopus.com/inward/record.url?scp=84978782749&partnerID=8YFLogxK
U2 - 10.1109/TIE.2016.2541598
DO - 10.1109/TIE.2016.2541598
M3 - Article
AN - SCOPUS:84978782749
VL - 63
SP - 5263
EP - 5275
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
SN - 0278-0046
IS - 8
M1 - 7433447
ER -