不同槽配比下绕线式无刷双馈电机性能对比研究
Comparative Study on the Performance of Wound Brushless Doubly-fed Machines With Different Slot Ratios
阚超豪 1殷仁杰 1曾家乐 1胡兆稳 2余银钢3
作者信息
- 1. 合肥工业大学电气与自动化工程学院,安徽省 合肥市 230009
- 2. 合肥工业大学机械工程学院,安徽省 合肥市 230009
- 3. 高可靠配电技术安徽省联合共建学科重点实验室,安徽省 合肥市 230009
- 折叠
摘要
无刷双馈电机由于结构简单、可靠性高、变频器容量小等优点在恒频变速发电领域受到广泛关注,其定转子的槽数配比对电机性能与振动具有一定程度的影响.为探究这一问题,该文以绕线式无刷双馈电机定转子磁势分析为基础,推导不同槽配合的电磁力波对比以及槽配合对电机性能的影响,给出3种符合要求的槽配比方案,计算出各方案转子绕组谐波,并进行对比分析;利用有限元法对48/36槽、42/36槽与36/30槽 3 种方案在相同要求下的负载性能进行研究,导出定子齿部电磁力,对电机进行振动响应分析对比;最后,通过样机试验,验证有限元仿真的正确性,同时试验结果也证明所选槽配合下电机具有振动形变量小、转子电流小、系统输出电压和效率高、饱和程度低等优点.
Abstract
Brushless double-fed machines(BDFM)have received a lot of attention in the field of wind power generation due to their simple structure,high reliability and small inverter capacity,etc.The slot ratio of the stator and rotor has a certain degree of influence on the motor performance and vibration.In this paper,the magnetic potential of the stator and rotor of a winding brushless double-fed motor is analyzed as a basis to derive the comparison of the electromagnetic force waves of different slot ratios and the effect of slot ratios on the performance of the motor,three options of slot ratios are given to meet the requirements,and the rotor winding harmonics of each option are calculated for analysis and comparison.The finite element method is used to study the load performance of 48/36 slot,42/36 slot and 36/30 slot solutions under the same requirements.And the electromagnetic force of the stator tooth is derived to analyze and compare the vibration response of the motor.Finally,the prototype is tested to verify the correctness of the finite element simulation.At the same time,the test results also prove that the motor equipped with the selected slot exhibits minimal vibration,low rotor current,high system output voltage and low saturation level.
关键词
无刷双馈电机/有限元法/绕线式转子/电机槽数配比/振动响应Key words
brushless doubly-fed machine(BDFM)/finite element/wound rotor/ratio of motor slots/vibration response引用本文复制引用
基金项目
国家自然科学基金项目(51377040)
安徽省重点研究与开发计划项目(202104a05020078)
出版年
2024
国家科技期刊平台
NSTL
万方数据