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Instantaneous Power Control for Suppressing the Second Harmonic DC Bus Voltage under Generic Unbalanced Operating Conditions

机译:通用不平衡工作条件下抑制二次谐波直流母线电压的瞬时功率控制

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摘要

This paper proposes an simplified instantaneous\udoutput power control to suppress the second harmonic DC bus\udvoltage due to asymmetry in a three-phase PWM converter\udsystem without any sequential component decomposers. Normally,\udin the instantaneous output power control, the positive and\udnegative output voltages and currents are required and they are\udusually decomposed by notch filters or dual second-order\udgeneralized integrals that are difficult to tune and complicated.\udWhile in the proposed method, the positive-sequence and\udnegative-sequence currents are regulated by PI plus resonant\ud(PI-R) controllers in dq-frame. Therefore, the sequential current\uddecomposers can be avoided. Meanwhile, the positive and\udnegative sequence output voltages, which are essential for\udcalculating the positive-sequence and negative-sequence current\udreferences, are simply obtained from the outputs of the PI and\udresonant controllers, respectively. The proposed method is robust\udto any asymmetries and its effectiveness is verified on a prototype\udasymmetric three-phase permanent magnet synchronous\udgenerator (PMSG) system with inherent and externally added\udasymmetries.
机译:本文提出了一种简化的瞬时\ ud输出功率控制,以抑制三相PWM转换器\ udsystem中由于不对称而导致的二次谐波DC总线\ ud电压,而无需任何顺序的分量分解器。通常,在瞬时输出功率控制中,需要正输出和负输出电压和电流,并且通常由陷波滤波器或难以调节和复杂化的双二阶/平衡化积分来分解。在提出的方法中,正序和负序电流由PI加上dq帧中的谐振\ ud(PI-R)控制器来调节。因此,可以避免顺序的电流分解器。同时,分别从PI和超声波控制器的输出中分别获得正和负序输出电压,这对于计算正序电流和负序电流参考至关重要。所提出的方法对任何不对称性都是鲁棒的,并且在具有固有和外部相加的不对称性的原型\不对称三相永磁同步发电机(PMSG)系统上验证了其有效性。

著录项

  • 作者

    Hu, Y.; Zhu, Z.Q.; Odavic, M.;

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  • 年度 2016
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  • 原文格式 PDF
  • 正文语种 en
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