Grid-connected inverter with inner output impedance and governor-free characteristics
Grid-connected inverter with inner output impedance and governor-free characteristics
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具有内输出阻抗、无调速特性的并网逆变器
DOI：
10.1109/ecce.2010.5617964
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Ohshima
中科院分区：
文献类型：
--
作者：
Jinbin Zhao;S. Ushiki;M. Ohshima
本文提出了一种新的PWM交/直流逆变器控制算法，该算法既能提供逆变器的内部输出阻抗，又能提供无调速器的特性。该算法不仅在单机运行中，而且在并网运行中始终将逆变器作为电压源进行调节。同步电机的Park方程在PWM逆变器中实现。对该算法的内输出阻抗和无调速器特性进行了数学分析。通过分析，导出了设计逆变器的特性方程。实验结果表明，实测值与计算值吻合较好。所提出的逆变器的输出电压和电流性能的特征类似于没有任何强制控制的同步机。
This paper proposes for a PWM ac/dc inverter a new control algorithm that provides the inverter with both inner output impedance and governor-free characteristics. The proposed algorithm regulates the inverter as a voltage source all the time in not only standalone but grid-connected operations. The Park's equation of a synchronous machine is realized in a PWM inverter. The inner output impedance and the governor-free characteristics based on the algorithm are analyzed mathematically. The characteristic equations to design the inverter are derived through the analysis. Experimental results show that the measured values and the calculated values get in good agreement. The output voltage and current performance of the proposed inverter is characterized similarly to a synchronous machine without any compulsory control.