电工技术学报2017，Vol.32Issue(z1)：138-150,13.DOI:10.19595/j.cnki.1000-6753.tces.L70489
三相四桥臂虚拟同步发电机预同步、多环路控制及负载不平衡控制方法
A Pre-Synchronization,Multiple Loops Control,and Unbalanced Load Control Strategies for Three-Phase Four-Leg Virtual Synchronous Generator
摘要
Abstract
This paper designs a multiple loops control strategy for three-phase four-leg virtual synchronous generator (VSG). The decoupling control of power is used to make inverter simulate the primary frequency modulation, primary voltage modulation, inertia and excitation characteristics of synchronous generator. To improve the dynamic regulation performance of micro-grid, voltage and current double loop is cascaded after the power loop. To connect the grid smoothly, a synchronization control strategy is adopted to track the voltage frequency, phase and amplitude of grid. A variable frequency adaptive resonance control strategy is used to suppress unbalanced voltage and frequency fluctuation caused by unbalanced load. The simulation and experiments validate the effectiveness of the control strategy.关键词
虚拟同步发电机/三相四桥臂/多环路/预同步/自适应谐振Key words
Virtual synchronous generator/three-phase four-leg/multiple loops/pre-synchronization/adaptive resonance分类
信息技术与安全科学引用本文复制引用
顾彬仕,王建华,骆芳芳,季振东,吕志鹏,顾伟,王涛..三相四桥臂虚拟同步发电机预同步、多环路控制及负载不平衡控制方法[J].电工技术学报,2017,32(z1):138-150,13.基金项目
国家重点研发计划(2016YFB0900404)、国家自然科学基金项目(51477030)、江苏省产学研前瞻性联合研究项目(BY2015070-18)、江苏省自然科学青年基金(BK20140944)及国网公司科技项目(PD71-16-023)资助. （2016YFB0900404）
