摘要
受系统中电源多样化及非线性负荷的影响,用户侧电源中会出现包含谐波及不平衡共存现象。当电动机运行在此类复杂电源质量条件下,会造成能效降低、温升增加,严重情况下会导致电机损坏,影响安全生产。为了研究供电电源包含谐波及不平衡共存时感应电机损耗特性,以一台5.5 kW笼型感应电机为例,设计了9种电源包含谐波及不平衡共存时的供电电源波形,进一步利用时步有限元法,分析了在上述不同供电电源波形情况下,电机内部定转子铁心磁密及转子导条电流密度的分布特点,并进一步分析了空载及负载情况下的损耗特性;最后通过试验验证了文中分析结果的正确性。
Due to enormous applications of the non-linear and unbalance load, simultaneous voltage unbalance and harmonic distortions are often encountered in power supply, and the operating performance of the induction motors may be worse, such as loss increases and temperature rise. In order to study the loss characteristics of induction motor whose power supply has both harmonic components and unbalance voltage, the characteristics of field distribution and loss characteristics of a 5.5 kW cage induction motor by using the Time-stepping Finite Element method were analyzed. The loss characteristics of no-load and load were analyzed, and the correctness of the analysis results was verified by experiments.
出处
《电机与控制应用》
北大核心
2016年第7期45-50,共6页
Electric machines & control application
基金
国家自然科学基金项目(51307050)
中央高校基本科研业务费专项资金资助(2015ZD03)
关键词
谐波
电源不平衡
时步有限元
损耗
harmonic
unbalance voltage conditions
time-stepping finite element
loss
