Model Predictive Torque Control of NPC Three-Level Inverter for Induction Motor Based on Generalized Two-Vectors Considering Neutral-Point Potential Balance
2023 IEEE PELS Students and Young Professionals Symposium (SYPS)(2023)
摘要
In order to maintain the neutral point potential balance and enhance the output current quality of the Neutral Point Clamped (NPC) three-level inverter, a novel approach called Neutral Point Balance based on Generalized Two-Vector Model Predictive Torque Control (NPB-GTV-MPTC) is proposed in this paper. The NPB-GTV-MPTC method evaluates vector combinations and their durations using a predefined cost function, aiming to achieve global minimization of torque error and optimal current quality. It effectively addresses the issue of neutral point potential imbalance in the NPC three-level topology. The effectiveness of the proposed NPB-GTV-MPTC is verified through a comparison of the inverter's output current quality, the motor's electromagnetic torque ripple, and motor speed response speed. The results demonstrate that NPB-GTV-MPTC outperforms the conventional GTV-MPTC approach, achieving superior performance in the considered aspects.
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关键词
Induction motor drives,model-predictive torque control,neutral-point Clamped Three-level Inverter
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