摘要
本文着重分析了优化磁链轨迹的高频劈零矢量PWM方法的理论依据,基于此方法提出了一种十分便于全数字控制的实用劈零矢量PWM方法。最后在一个3kW电机上的实验结果表明,该实用方法有效地改善了电机电流波形,减小了其谐波分量,消除了频率噪声,同时很好地抑制住了转矩脉动,获得了较为平滑、宽广的速度控制特性。
Based on the analysis of frequency split-zerovector PWM strategy.a novel and practical split-zerovector PWM method which is suitable for fully digitized control is pro posed.Experiments were carried out to verify the feasibility of the proposed scheme using a 3kW three-phase squirral cage induction motor. The results has proved the validity of the method with which less harmonic current less torque ripple,minimized frequency-noise and the smooth wide speed control characteristic are available.
出处
《电工技术学报》
EI
CSCD
北大核心
1995年第4期5-10,共6页
Transactions of China Electrotechnical Society
关键词
矢量控制
优化磁链轨迹
变频器
High frequency split - zerovector Flux locus Digitized PWM inverter