摘要
为解决传统永磁同步发电机系统存在的输出电压调节困难和适应转速范围窄的问题,针对一种新型的并联式绕组开放式永磁发电机系统中固有的零序电流和谐波问题,在分析并联式绕组开放式发电系统工作原理与零序电流产生机理的基础上,提出一种改进型电流控制策略,该方法在传统PI控制策略的基础上,增加对发电系统中整流桥侧的偏置电压的补偿量,抑制PI调节器输出的波动,实现电流谐波的抑制。最后,通过仿真和实验分析验证了该文提出的改进型电流控制策略与传统电流控制策略相比具有优良的控制性能。
In order to overcome the difficulties of narrow speed range and poor load voltage regulation,a novel parallel-connected open-winding topology of permanent magnet synchronous generator system is proposed. Due to the inherent zero-sequence current and harmonics problems for the novel topology,the operation principle of the new system and the mechanism of generating the zero-sequence current are analyzed in detail. Then,an improved current control method is proposed by compensating the offset voltage of the rectifier connected to the open-end windings to suppress the output ripple of the proportional-integral（ PI） regulator. In this way,the current harmonics of the proposed generation system can be reduced. Finally,the simulation and experiment results verify that the proposed current control method has better performance comparing to traditional approaches.
出处
《电工技术学报》
EI
CSCD
北大核心
2016年第9期146-155,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(51207070)
关键词
并联式绕组开放式永磁同步发电机
零序电流
谐波问题
电流控制策略
Parallel-connected open-winding permanent magnet synchronous generator
zero-sequence current
harmonics problems
current control method
