基于绕组温度约束的永磁同步电机裂比优化方法
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Keywords：Permanent magnet synchronous machines, split ratio, winding temperature limitation, thermal resistance network, thermal resistance classification
In the machine design, the envelop dimension is usually limited due to the application, the winding temperature must be guaranteed within the safety margin and the stator magnetic field should be avoided saturation[6-10]. For these fixed boundary conditions, the preceding studies have demonstrated that the split ratio which relates the rotor diameter to the total machine diameter is in connection with the torque and
This work is partially supported by National Natural Science Foundation of China (51677041). Received January 08, 2018; Revised June 01, 2018
loss optimization[10-19]. In the case of split ratio optimization, the typical
Winding Temperature Limitation
Zhang Xintong Zhang Chengming Li Liyi Cao Jiwei Wang Kaisiyuan （Electrical Institute Harbin Institute of Technology Harbin 150001 China）
Abstract The split ratio is a significant parameter which affects the torque and efficiency of permanent magnet synchronous machines (PMSM). This paper proposes a split ratio optimization model for PMSM considering winding temperature limitation. The typical thermal constraints of the split ratio optimization are the fixed maximum copper loss and current density allowed. However, as the heat conductivity of the machine changes with the split ratio due to the variable dimensions of the slots, teeth and yoke, the typical thermal constraints are difficult to limit the winding temperature at the same level. To solve this problem, the winding temperature limitation was taken as the thermal constraint directly in this paper based on the thermal resistance network (TRN). To improve thermal analytical accuracy, the thermal resistance classification according to the heat source type was proposed. The effectiveness of the proposed optimization model is verified by finite element analysis (FEA) and experiment of a 5 kW prototype machine
2019 年 5 月 第 34 卷第 9 期
电工技术学报
TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY
Βιβλιοθήκη Baidu
DOI：10.19595/j.cnki.1000-6753.tces.180027
Vol.34 No. 9 May 2019
Split Ratio Optimization for Permanent Magnet Synchronous Machines Considering
0 Introduction
Permanent magnet synchronous machines, due to high torque density, high efficiency and high reliability etc., have become the popular choice for various applications, such as electric vehicles, compressors, vacuum pumps, turbine generator and wind power generation system[1-5].
In the machine design, the envelop dimension is usually limited due to the application, the winding temperature must be guaranteed within the safety margin and the stator magnetic field should be avoided saturation[6-10]. For these fixed boundary conditions, the preceding studies have demonstrated that the split ratio which relates the rotor diameter to the total machine diameter is in connection with the torque and
This work is partially supported by National Natural Science Foundation of China (51677041). Received January 08, 2018; Revised June 01, 2018
loss optimization[10-19]. In the case of split ratio optimization, the typical
Winding Temperature Limitation
Zhang Xintong Zhang Chengming Li Liyi Cao Jiwei Wang Kaisiyuan （Electrical Institute Harbin Institute of Technology Harbin 150001 China）
Abstract The split ratio is a significant parameter which affects the torque and efficiency of permanent magnet synchronous machines (PMSM). This paper proposes a split ratio optimization model for PMSM considering winding temperature limitation. The typical thermal constraints of the split ratio optimization are the fixed maximum copper loss and current density allowed. However, as the heat conductivity of the machine changes with the split ratio due to the variable dimensions of the slots, teeth and yoke, the typical thermal constraints are difficult to limit the winding temperature at the same level. To solve this problem, the winding temperature limitation was taken as the thermal constraint directly in this paper based on the thermal resistance network (TRN). To improve thermal analytical accuracy, the thermal resistance classification according to the heat source type was proposed. The effectiveness of the proposed optimization model is verified by finite element analysis (FEA) and experiment of a 5 kW prototype machine
2019 年 5 月 第 34 卷第 9 期
电工技术学报
TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY
Βιβλιοθήκη Baidu
DOI：10.19595/j.cnki.1000-6753.tces.180027
Vol.34 No. 9 May 2019
Split Ratio Optimization for Permanent Magnet Synchronous Machines Considering
0 Introduction
Permanent magnet synchronous machines, due to high torque density, high efficiency and high reliability etc., have become the popular choice for various applications, such as electric vehicles, compressors, vacuum pumps, turbine generator and wind power generation system[1-5].