摘要
优良的励磁控制系统不仅保证发电机运行的可靠性和稳定性,而且可有效地提高发电机和电力系统技术指标。同步发电机励磁系统采用PWM和电压、电流双闭环控制整流技术,实现励磁直流低纹波和励磁功率单元高功率因数转换,提高了发电机供电质量和动态稳定性能。仿真结果表明该设计对改善励磁系统输入电流波形,提高励磁系统功率因素有明显效果。
A high quality excitation system not only plays an important role in the stability of power system but also can improve the performance of generators and power system. In this paper,a rectifier, which is controlled by PWM and double closed loops including current and voltage,is applied to excitation system of synchronous generators. It improves the quality of generator＇s supply and dynamic stability by achieving low ripple current conversion and improving high power factor transform of excitation unit. Simulation results show the obvious effect on the amendment to the input current and power factor in the excitation system.
出处
《微特电机》
北大核心
2006年第5期29-32,共4页
Small & Special Electrical Machines
关键词
高功率因数
励磁系统
PWM
仿真
high power factor
excitation system
PWM
simulation
