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首页> 外文期刊>IEEE transactions on industrial informatics >Current Ripple Damping Control to Minimize Impedance Network for Single-Phase Quasi-Z Source Inverter System
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Current Ripple Damping Control to Minimize Impedance Network for Single-Phase Quasi-Z Source Inverter System

机译：电流纹波阻尼控制可将单相拟Z源逆变器系统的阻抗网络降至最低

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摘要

The single-phase quasi-Z source inverter (qZSI) topology has recently attracted attention for single-phase grid-tie photovoltaic (PV) applications. However, due to the inherent second-harmonic power flow in single-phase systems, a large qZS network is required to reduce the second-harmonic component of currents and voltages on the dc side. Minimization of the qZS network remains an open issue. This paper proposes a technique that minimizes the qZS capacitance and inductance of the single-phase qZSI topology by employing dc-side low-frequency current ripple damping control. Through analysis of power flow, a second-harmonic power model is derived and the ripple power is analyzed for minimization of the qZS network. A current ripple damping control is proposed to ensure suppression of second-harmonic power flow through the inductors. Simulation and experimental results verify the theoretical analysis, damping control, and the proposed design minimization of the qZS network for the single-phase topology.
机译：单相准Z源逆变器（qZSI）拓扑最近引起了单相并网光伏（PV）应用的关注。但是，由于单相系统固有的二次谐波功率流，需要大型qZS网络来减少直流侧电流和电压的二次谐波分量。最小化qZS网络仍然是一个未解决的问题。本文提出了一种通过采用直流侧低频电流纹波阻尼控制来最小化单相qZSI拓扑的qZS电容和电感的技术。通过潮流分析，推导了二次谐波功率模型，并分析了纹波功率，以最小化qZS网络。提出了一种电流纹波阻尼控制，以确保抑制流过电感的二次谐波功率。仿真和实验结果验证了单相拓扑结构的理论分析，阻尼控制以及拟议的最小化qZS网络设计。

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