摘要
随着环境和能源问题的日益严峻,可再生能源的开发,尤其是风力发电技术已被越来越多的国家所重视,而对应用在风力发电系统中的逆变器和调制方法的研究尤为重要。本文针对变速风力发电系统中的逆变器,提出了谐波消除、电流滞环和空间矢量3种PWM控制策略,并对这3种方法进行了具体的分析和比较。仿真和实验结果证明,采用PWM调制策略控制风力发电逆变器不仅可以实现灵活、可靠的控制,而且还可以减小谐波含量,从而提高逆变器输出电能质量。
Due to the deterioration of the circumstance and the short supply of the energies,more and more attention was paid to the development of the regenerable energies,especially the wind energy.Three stratgies of harmonic elimination, current hysteresis and space vector modulation are put forward for controlling the inverter applied in speed-variable wind energy generation system,analysis and comparison are made among them.The simulative and experimental results proved that PWM strategy not only provides flexible and reliable control,but also reduces the harmonic content and thus improves the inverter output power quality.
出处
《电力电子技术》
CSCD
北大核心
2006年第5期50-52,共3页
Power Electronics
