Fast FCS-MPC-Based SVPWM Method to Reduce Switching States of Multilevel Cascaded H-Bridge STATCOMs

Xiuqin Wang; Jiwen Zhao; Qunjing Wang; Guoli Li; Maosong Zhang

Fast FCS-MPC-Based SVPWM Method to Reduce Switching States of Multilevel Cascaded H-Bridge STATCOMs

Vol. 19, No. 1, pp. 244-253, Jan. 2019

10.6113/JPE.2019.19.1.244

Finite control set model-predictive control (FCS-MPC)

Multilevel cascaded H-bridge (CHB)

Space vector pulse width modulation (SVPWM)

Static synchronous compensator

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Abstract

Finite control set model-predictive control (FCS-MPC) has received increasing attentions due to its outstanding dynamic performance. It is being widely used in power converters and multilevel inverters. However, FCS-MPC requires a lot of calculations, especially for multilevel-cascaded H-bridge (CHB) static synchronous compensators (STATCOMs), since it has to take account of all the feasible voltage vectors of inverters. Hence, an improved five-segment space vector pulse width modulation (SVPWM) method based on the non-orthogonal static reference frames is proposed. The proposed SVPWM method has a lower number of switching states and requires fewer computations than the conventional method. As a result, it makes FCS-MPC more efficient for multilevel cascaded H-bridge STATCOMs. The partial cost function is adopted to sequentially solve for the reference current and capacitor voltage. The proposed FCS-MPC method can reduce the calculation burden of the FCS-MPC strategy, and reduce both the switching frequency and power losses. Simulation and experimental results validate the excellent performance of the proposed method when compared with the conventional approach.

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Cite this article

[IEEE Style]

X. Wang, J. Zhao, Q. Wang, G. Li, M. Zhang, "Fast FCS-MPC-Based SVPWM Method to Reduce Switching States of Multilevel Cascaded H-Bridge STATCOMs," Journal of Power Electronics, vol. 19, no. 1, pp. 244-253, 2019. DOI: 10.6113/JPE.2019.19.1.244.

[ACM Style]

Xiuqin Wang, Jiwen Zhao, Qunjing Wang, Guoli Li, and Maosong Zhang. 2019. Fast FCS-MPC-Based SVPWM Method to Reduce Switching States of Multilevel Cascaded H-Bridge STATCOMs. Journal of Power Electronics, 19, 1, (2019), 244-253. DOI: 10.6113/JPE.2019.19.1.244.