不同供电方式对非晶合金永磁同步电机铁耗的影响

发布时间：2018-08-19 17:19

【摘要】：为研究不同供电方式(包括正弦波电源供电、直接转矩控制和矢量控制)时的非晶合金永磁同步电机铁耗的大小与分布规律,首先测试了不同频率下非晶合金环形叠压铁心的损耗曲线。然后,以一台8极、36槽表面式非晶电机为例,将定子铁心划分为轭部、齿根、齿身和齿顶四个区域,运用时步有限元法,研究了不同供电方式对空载不同区域的铁耗分布影响情况。并对空载的转子损耗分布规律进行了研究。结果显示:两种供电方式下,定子铁耗主要集中在齿身和轭部区域,都占定子总铁耗的37%以上,齿根区域其次,而由于齿顶区域铁心体积小,其铁耗在四个区域中的比重最小,只占6%以下;就总定子铁耗而言,直接转矩控制相对于矢量控制增加了24.7%。相应于矢量控制,直接转矩控制转子铁心损耗增加了36.7%,永磁体涡流损耗增加7.8%。最后经过与试验值对比,验证了铁耗计算的有效性。
[Abstract]:In order to study the size and distribution of iron loss of amorphous alloy permanent magnet synchronous motor (PMSM) with different power supply modes (including sinusoidal power supply, direct torque control and vector control), The loss curves of annular laminated cores of amorphous alloys at different frequencies were first measured. Then, taking an 8-pole 36-slot surface amorphous motor as an example, the stator core is divided into four regions: yoke, tooth root, tooth body and tooth top, and the time-step finite element method is used. The influence of different power supply modes on the distribution of iron consumption in different no-load regions is studied. The distribution law of rotor loss without load is studied. The results show that the stator iron consumption is mainly concentrated in the tooth body and yoke area, accounting for more than 37% of the total iron consumption of the stator, followed by the tooth root area. However, due to the small volume of iron core in the tooth top region, the proportion of iron consumption in the four regions is the smallest. In terms of total stator iron loss, direct torque control (DTC) increases 24.7% compared with vector control. Corresponding to vector control, the core loss of direct torque control rotor increases by 36.7 and the eddy current loss of permanent magnet increases by 7.8. Finally, the effectiveness of iron consumption calculation is verified by comparing with the experimental data.
【作者单位】：沈阳工业大学国家稀土永磁电机工程技术研究中心;
【基金】：国家自然科学基金(51307111) 国家科技支撑计划(2013BAE08B00) 辽宁省教育厅科学技术研究(L2013049)资助项目
【分类号】：TM341

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