兆瓦级高速永磁电机通风系统设计与转子表面风摩耗研究
针对兆瓦级高速永磁电机的损耗密度大、散热困难、永磁体在高温情况下易发生不可逆退磁的问题，提出了一种径向与轴向混合的⊥型通风系统，通过流体仿真软件Fluent建立了该种通风系统的3D流体场计算模型，并详细分析了通风系统内的流体分布；同时针对高速电机转子表面线速度高（一般可达200 m/s）、转子表面的风摩耗较大且计算复杂的问题，基于所建立的3D流体场模型和解析法，对兆瓦级高速永磁电机的转子转速、转子表面粗糙度及通风量、风道几何参数、气隙大小对转子表面风摩耗的影响进行了研究计算，并总结了相应的规律。分析结果表明，所设计的混合⊥型通风系统具有较好的湍流特性和散热特性，转子转速和气隙大小是影响风摩耗的...
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| Published in | 电机与控制学报 Vol. 18; no. 2; pp. 50 - 55 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
沈阳工业大学 电气工程学院,辽宁 沈阳,110870%沈阳工程学院 机械学院,辽宁 沈阳,110136%贝尔法斯特女王大学 电气工程系，英国 贝尔法斯特 BT9 5AH
2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1007-449X |
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| Abstract | 针对兆瓦级高速永磁电机的损耗密度大、散热困难、永磁体在高温情况下易发生不可逆退磁的问题，提出了一种径向与轴向混合的⊥型通风系统，通过流体仿真软件Fluent建立了该种通风系统的3D流体场计算模型，并详细分析了通风系统内的流体分布；同时针对高速电机转子表面线速度高（一般可达200 m/s）、转子表面的风摩耗较大且计算复杂的问题，基于所建立的3D流体场模型和解析法，对兆瓦级高速永磁电机的转子转速、转子表面粗糙度及通风量、风道几何参数、气隙大小对转子表面风摩耗的影响进行了研究计算，并总结了相应的规律。分析结果表明，所设计的混合⊥型通风系统具有较好的湍流特性和散热特性，转子转速和气隙大小是影响风摩耗的主要因素。 |
|---|---|
| AbstractList | TM351; 针对兆瓦级高速永磁电机的损耗密度大、散热困难、永磁体在高温情况下易发生不可逆退磁的问题，提出了一种径向与轴向混合的⊥型通风系统，通过流体仿真软件Fluent建立了该种通风系统的3D流体场计算模型，并详细分析了通风系统内的流体分布；同时针对高速电机转子表面线速度高(一般可达200 m/s)、转子表面的风摩耗较大且计算复杂的问题，基于所建立的3D流体场模型和解析法，对兆瓦级高速永磁电机的转子转速、转子表面粗糙度及通风量、风道几何参数、气隙大小对转子表面风摩耗的影响进行了研究计算，并总结了相应的规律。分析结果表明，所设计的混合⊥型通风系统具有较好的湍流特性和散热特性，转子转速和气隙大小是影响风摩耗的主要因素。 针对兆瓦级高速永磁电机的损耗密度大、散热困难、永磁体在高温情况下易发生不可逆退磁的问题，提出了一种径向与轴向混合的⊥型通风系统，通过流体仿真软件Fluent建立了该种通风系统的3D流体场计算模型，并详细分析了通风系统内的流体分布；同时针对高速电机转子表面线速度高（一般可达200 m/s）、转子表面的风摩耗较大且计算复杂的问题，基于所建立的3D流体场模型和解析法，对兆瓦级高速永磁电机的转子转速、转子表面粗糙度及通风量、风道几何参数、气隙大小对转子表面风摩耗的影响进行了研究计算，并总结了相应的规律。分析结果表明，所设计的混合⊥型通风系统具有较好的湍流特性和散热特性，转子转速和气隙大小是影响风摩耗的主要因素。 |
| Abstract_FL | Due to high loss density, cooling difficulties, permanent magnet being easy to occur irreversi-ble demagnetization at high temperatures of MW high-speed permanent magnet motor, a kind of radial and axial mixed⊥-shaped ventilation system is presented. Fluid field analysis model of the rotor cooling system was established through fluid simulation software computational fluid dynamics(CFD)-fluent, and then the detailed analysis of fluid distribution was carried out within the ventilation system. At the same time, according to high line speed of rotor surface (generally up to 200 m/s), large wind friction loss of rotor surface and complex calculations, the relationship between wind friction loss and rotor speed, the roughness of rotor surface, ventilation quantity, duct geometric parameters and air gap sizes were investi-gated and generalized based on the established 3D fluid field analysis model and analysis method. The re-sults of analysis show that the mixed ⊥-shaped ventilation system has good characteristics of turbulence and heat dissipation, and the main factors affecting wind friction loss are rotor speed and gap sizes. |
| Author | 张凤阁 杜光辉 王天煜 黄娜 曹文平 |
| AuthorAffiliation | 沈阳工业大学电气工程学院,辽宁沈阳,110870 沈阳工程学院机械学院,辽宁沈阳,110136 贝尔法斯特女王大学电气工程系,英国贝尔法斯特BT95AH |
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| Author_FL | DU Guang-hui CAO Wen-ping WANG Tian-yu ZHANG Feng-ge HUANG Na |
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| DocumentTitleAlternate | Ventilation system design and research on wind friction loss of rotor surface of MW high-speed permanent magnet motor |
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| Keywords | 3D fluid field 高速 通风系统 风摩耗 high-speed permanent magnet motor wind friction loss 永磁电机 三维流体场 ventilation system |
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| Notes | Due to high loss density, cooling difficulties, permanent magnet being easy to occur irreversi-ble demagnetization at high temperatures of MW high-speed permanent magnet motor, a kind of radial and axial mixed⊥-shaped ventilation system is presented. Fluid field analysis model of the rotor cooling system was established through fluid simulation software computational fluid dynamics（CFD）-fluent, and then the detailed analysis of fluid distribution was carried out within the ventilation system. At the same time, according to high line speed of rotor surface （generally up to 200 m/s）, large wind friction loss of rotor surface and complex calculations, the relationship between wind friction loss and rotor speed, the roughness of rotor surface, ventilation quantity, duct geometric parameters and air gap sizes were investi-gated and generalized based on the established 3D fluid field analysis model and analysis method. The re-sults of analysis show that the mixed ⊥-shaped ventilation system has good characteristics |
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| PublicationTitle | 电机与控制学报 |
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| Publisher | 沈阳工业大学 电气工程学院,辽宁 沈阳,110870%沈阳工程学院 机械学院,辽宁 沈阳,110136%贝尔法斯特女王大学 电气工程系，英国 贝尔法斯特 BT9 5AH |
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| Snippet | 针对兆瓦级高速永磁电机的损耗密度大、散热困难、永磁体在高温情况下易发生不可逆退磁的问题，提出了一种径向与轴向混合的⊥型通风系统，通过流体仿真软件Fluent建立了该种通... TM351; 针对兆瓦级高速永磁电机的损耗密度大、散热困难、永磁体在高温情况下易发生不可逆退磁的问题，提出了一种径向与轴向混合的⊥型通风系统，通过流体仿真软件Fluent建立... |
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| SubjectTerms | 三维流体场 永磁电机 通风系统 风摩耗 高速 |
| Title | 兆瓦级高速永磁电机通风系统设计与转子表面风摩耗研究 |
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