A Simplified Modulated Model Predictive Control for a Grid-Tied Three-Level T-Type Inverter

Conference paper (2020)

Authors

Junzhong Xu Shanghai Jiao Tong University

Thiago B. Soeiro DC systems, Energy conversion & Storage -

Fei Gao Shanghai Jiao Tong University

H Tang Shanghai Jiao Tong University

P. Bauer DC systems, Energy conversion & Storage -

Research Group

DC systems, Energy conversion & Storage () (TU Delft)

Finite-control-set model predictive control (FCSMPC) Modulated model predictive control (MMPC) Three-level T-type NPC inverter

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http://resolver.tudelft.nl/uuid:1a6eca60-8052-4795-a8f8-118c1dd4924e

Published Date

2020

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

The implementation of finite-control-set model predictive control (FCS-MPC) in grid-tied inverters can make the system to suffer from poor harmonics performance, which may complicate the AC filter design for compliance with strict harmonic standards. To overcome this shortcoming, a simplified modulated model predictive control strategy is proposed in this paper. This control strategy not only improves current waveform total harmonic distortion (THD) without introducing additional weight factor in the cost function but can also shorten running/computational time without compromising the performance of fast current dynamic response. Herein, the detailed implementation of this control strategy is given, while considering its application to the current feedback control loop of a three-phase three-level T-type inverter modulated at constant switching frequency. Finally, PLECS circuit simulations are used to verify the feasibility and effectiveness of the proposed control strategy and to benchmark its performance to the classical FCS-MPC strategy and the application of a PI-controller.

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