摘要
针对一种自由活塞驱动的永磁直线发电机系统,提出基于磁链定向的直接功率控制,通过预测无差拍算法控制发电机电流与反电势保持同相,实现了发电机单位功率因数控制,达到获取发电机最大有功功率的目的.同时,为了提高发电机侧整流器输出电压的稳定性和控制精度,在直流电压闭环中引入模糊PI策略.通过仿真实验验证系统控制策略的可行性和有效性.
Aimed at a free-piston-driven permanent magnet linear generator system, a direct power con- trol with flux orientation is proposed. By using predictive deadbeat predictive control algorithm, the gen- erator current is made in phase with the back electromotive force （EMF） to realize unit power factor con- trol and obtain maximum active power of the generator. Meantime, a fuzzy PI control strategy is intro- duced into the DC voltage control loop to improve the stability of output voltage of the rectifier at the gen- erator side. The feasibility and effectiveness o{ system control strategy is verified by means of simulative experiment.
出处
《兰州理工大学学报》
CAS
北大核心
2015年第2期91-95,共5页
Journal of Lanzhou University of Technology
基金
国家自然科学基金(51267011)
甘肃省自然科学基金(1212RJYA022)
甘肃省杰出青年基金(1111RJDA007)
甘肃省科技支撑计划项目(1011JKCA173)
关键词
永磁直线发电机
功率因数
预测算法
模糊PI控制
直接功率控制
permanent-magnet linear generator
power factor
predictive algorithm
fuzzy PI control
direct power control
