摘要
为改善开绕组永磁同步发电机控制系统的复杂性,本文提出一种不控整流器与可控变流器集成的新型拓扑结构及其优化控制策略。通过建立开绕组永磁同步发电机数学模型,深入分析了变流器单边可控下开绕组永磁同步发电机系统的电压空间矢量分配机制。通过分析电流矢量对不控整流器交流侧电压矢量的影响,研究了两侧直流母线电压相同情况下的系统电压空间矢量调制范围,并根据最大线性调制度的要求确定了单位功率因数控制作为所研系统的最优控制策略。最后,通过搭建开绕组永磁同步发电机实验平台,验证了所提出控制策略的正确性和可行性。
In order to improve the control system complexity of the open winding permanent magnet synchronous generator(PMSG),a novel configuration and optimized control strategy of the open winding PMSG system with the integration of full controlled and uncontrolled converter is proposed in this paper.Based on the mathematic model of open winding PMSG,the distribution mechanism of the voltage space vector with the single-side controllable rectifier is discussed.By analyzing the effect of current vector on the voltage vector of ac side in the uncontrolled rectifier,the voltage modulation range of open winding PMSG system within the same DC-link voltage ratios is studied,and the unit power factor control is selected as the optimized control strategy to implement the maximum linear modulation index.Finally,the experimental platform of open winding PMSG system with single-side controllable rectifier is developed to validate the correctness and availability of the proposed open winding PMSG system and control strategy.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第10期123-130,共8页
Transactions of China Electrotechnical Society
关键词
开绕组永磁同步发电机
变流器单边可控
电压空间矢量
最大线性调制度
单位功率因数
Open winding permanent magnet synchronous generator
single-side controllable rectifier
voltage space vector
maximum linear modulation index
unit power factor
