无刷励磁同步风力发电机励磁系统设计

Design for Wind Brushless Synchronous Generator Excitation System

提出了无刷励磁同步风力发电机励磁系统设计方案,主励磁机发出交流电,经过旋转整流器供给风力发电机励磁,只需跟随风速变化,控制主励磁机的励磁即可控制同步发电机的励磁,使得输出电压恒定,在额定风速以下,获得最大风能利用系数。设计了基于可编程逻辑控制器(PLC)的发电机无刷励磁调节系统,应用改进的PID控制算法,外加电力系统稳定器(PSS)附加调节器。该系统具有可靠性高、抗干扰能力强、硬件简单和系统可扩展性强的特点。

Design scheme of excitation system of brushless synchronous wind generator is presented. AC from the main exciter through a wind turbine rotating rectifier to excite the generator, simply follow the changes of wind speed. To control the main exciter and control the excitation of synchronous generator excitation, so that constant out- put voltage can be obtained. In the following wind speed rating, the largest wind energy utilization factor can he ob- tained. In addition, the brushless excitation generator conditioning system is based on the programmable logic control- ler （PLC）, and improved PID control algorithm was used, along with the vice-plus PSS regulator, the system has a high reliability, strong anti-interference ability, simple hardware scalable systems and strong characters.