摘要
提出一种改进的虚拟阻抗设计方法,通过优化电压前馈环参数将逆变器等效输出阻抗调节为纯阻性,设计自适应虚拟阻抗,解决传统下垂控制方法中逆变器等效输出阻抗不同的问题。添加电压有效值环,防止虚拟阻抗引起母线电压跌落。提出的改进方案提高逆变器并联控制的功率均分精度、环流抑制能力和动态特性,并通过仿真试验进行正确性和有效性验证。
An improved virtual impedance design method is proposed to adjust the inverter equivalent output impedance to be purely resistive by optimizing the parameters of the voltage feed-forward loop.An adaptive virtual impedance is designed to solve the problem of different inverter equivalent output impedance in the traditional drop method.The voltage root mean square(RMS)loop is incorporated to preclude the virtual impedance from precipitating bus voltage dips.The scheme proposed enhances the accuracy of power equalization,the ability to suppress circulating current,and the dynamic characteristics of inverter shunt control.The efficacy and accuracy of the proposed scheme are validated through simulation experiments.
作者
成晟
王维康
CHENG Sheng;WANG Weikang(Navy Equipment Department,Beijing 100071,China)
出处
《机电设备》
2024年第4期76-82,共7页
Mechanical and Electrical Equipment
关键词
逆变器并联
下垂控制
虚拟阻抗
parallel inverters
drop control
virtual impedance
作者简介
成晟(1980-),男,硕士、高级工程师。研究方向:电气工程、检测技术与自动化装置;通信作者:王维康(1992-),男,硕士、助理工程师。研究方向:船舶工程、船舶造价。
