摘要
为提高单相燃料电池并网逆变器谐波抑制能力和运行可靠性,提出矢量比例积分控制(VPI)与奇次谐波重复控制(OHRC)相结合的电流控制策略。利用VPI控制器低频段优越的跟踪性能和稳定性,快速跟踪基波正弦电流,并提高系统稳定性;利用OHRC控制器实现奇次谐波的高效抑制,改善VPI的谐波跟踪误差,补偿系统相位滞后。5 k W样机实验结果验证了所提出控制策略的有效性。
A novel current control strategy of single-phase fuel cells（FC）grid-connected inverter based on vector-proportional-integral（VPI）control and odd-harmonic repetitive control（OHRC）was proposed to improve the capacityof harmonic depressing and reliability of operation. With the great performance of tracking and stability in lowfrequency by VPI control,the quickness of fundamental sinusoidal current tracking and system stability wereachieved;the phase delay and VPI’s harmonic tracking error were compensated by OHRC with the property of odd-order harmonic depressing. The experiment results prove effectiveness of the control strategy.
出处
《电气传动》
北大核心
2014年第11期47-50,共4页
Electric Drive
关键词
单相光伏并网逆变器
矢量比例积分
奇次谐波重复控制
single - phase photovoltaic grid - connected inverter
vector - proportional - integral（VPI）
odd -harmonic repetitive control（OHRC）
