摘要
针对多相模块化多电平变流器(MP-MMC)驱动多相发电机的控制问题,基于矢量空间解耦理论,建立Y移30°六相永磁同步发电机(PMSG)在旋转坐标下的数学模型;将传统三相MMC拓扑结构推广至六相,并驱动六相永磁风力发电机。在控制上采用电流矢量解耦方法对六相永磁风力发电机的输出电流进行跟踪,同时对系统谐波成分加以抑制;对于MMC内部子模块电容电压稳定、环流抑制,采用闭环均压策略进行控制。最后通过在软件中搭建仿真模型,对发电机稳态运行以及功率突变时运行状态进行模拟,仿真结果表明:该系统具有良好的输出特性和鲁棒性能,验证了MP-MMC能够有效驱动六相永磁发电机实现平稳发电。
The mathematical model of six phase permanent magnetic synchronous generator (PMSG) with winding shifted-phase 30° was established under rotating coordinate based on the vector space decomposition theory. For the control of the multi-phase modular multilevel converter(MP-MMC) to drive the multi-phase generator, the MMC topology was extended from three phase to six phase and used to drive six phase permanent magnet wind power generator. And the current decoupling control method was adopted for base-frequency current tracing and harmonics suppressing. The close-loop control strategy was taken for the MMC internal sub-module capacitor voltage balance and the cycle current restraining. Finally, the simulation model was built under the conditions of steady state and power disturbance. The simulation results show that the system meets concerning standard and its robust performance is good. And they verify that six phase PMSG can generate electricity efficiently by MP-MMC driving.
作者
周荔丹
李杏
姚钢
梅柏杉
ZHOU Li-dan;LI Xing;YAO Gang;MEI Bo-shan(College of Electric Power Engineering, Shanghai University of Electric Power, Shanghai 200090, China;School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2019年第5期84-92,共9页
Electric Machines and Control
基金
国家自然科学基金(51377102)
关键词
六相永磁同步发电机
模块化多电平变流器
矢量空间解耦
矢量控制
闭环均压控制
six phase permanent magnet synchronous generator
modular multilevel converter
vector space decouple
vector control
close-loop control
