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具有同步发电机特性的微电网逆变器控制

, PP. 261-268

Keywords: 微电网,虚拟同步发电机,新能源发电站,下垂特性曲线,调压调频

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Abstract:

借助电力储能装置,将常规电力系统中的同步发电机数学模型应用到新能源发电逆变器控制算法中,形成虚拟同步发电机(VirtualSynchronousGenerator,VSG)。设计了原动机调节和励磁调节,并模拟同步发电机的转动惯量,使新能源电站对外接口具有频率和电压幅值下垂特性,解决了传统微电网逆变器在运行时输出阻抗小、阻尼小等问题,提高了稳定性。仿真和实验结果表明,设计的虚拟同步发电机能够模拟实际同步发电机的特性。

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