基于空间矢量调制的三电平逆变器中点电位波动分析及估算

Analysis and Estimations of Neutral Point Potential Fluctuation in Three Level Inverter Based upon Space Vector Modulation

目前为止,对于中点电位尚无一个简洁的模型和相关分析。文章基于空间矢量调制,建立了一种较为简洁的中点电位波动量模型,从数学层面上揭示了中点电位波动的根本原因和规律,从理论上推导出中点电位波动的波形。最后在Simulink仿真平台以及实验平台上验证了该理论的正确性。

There is no compact model and analysis of the neutral point potential at present. A fairly compact model of neutral point potential is proposed based upon the space vector modulation. With the model, the essential reason and rule of the neutral point potential fluctuation are revealed mathematically and the waveform of neutral point potential is derived theoretically. Correctness of the theory is verified by the Simulink simulation platform and experiment platform.