КОМПЛЕКСНЕ ДОСЛІДЖЕННЯ ТА ОПТИМІЗАЦІЯ ПАРАМЕТРІВ МАГНІТНОЇ СИСТЕМИ ЕЛЕКТРОДВИГУНІВ З ПОСТІЙНИМИ МАГНІТАМИ І ЗОВНІШНІМ РОТОРОМ
The paper presents the results of modeling of electromagnetic and thermal processes in four variants of brushless synchronous electric motors with permanent magnets and an external rotor, intended for electric drives of multirotor unmanned aerial vehicles (UAVs). The A40 type electric motor was sele...
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| Date: | 2026 |
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| Main Authors: | , , |
| Format: | Article |
| Published: |
Інститут електродинаміки НАН України, Київ
2026
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| Subjects: | |
| Online Access: | https://techned.org.ua/index.php/techned/article/view/1835 |
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| Journal Title: | Technical Electrodynamics |
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Technical Electrodynamics| Summary: | The paper presents the results of modeling of electromagnetic and thermal processes in four variants of brushless synchronous electric motors with permanent magnets and an external rotor, intended for electric drives of multirotor unmanned aerial vehicles (UAVs). The A40 type electric motor was selected as the base model, for which a comparison between calculated and experimental characteristics was performed, confirming the adequacy of the applied numerical model. Based on the basic design, three upgraded variants with an increased outer rotor diameter and increased stator slot depth were investigated. A comparative analysis of the output power, efficiency, current loading, losses, and thermal state of the motors was carried out, taking into account the averaged UAV flight cycle. It is shown that increasing the geometric dimensions of the magnetic system and the slot area makes it possible to increase the motor output power by 2.5-3 times while maintaining high efficiency. It was established that according to the set of considered criteria, Motor 3 is the optimal variant providing a maximum efficiency of 92.05% at an output power of 8.95 kW. The magnetic field analysis showed that no saturation of the stator magnetic system occurs in this variant, while the maximum magnetic flux density in the stator teeth does not exceed 1.7 T. Thermal calculationperformed for the specified flight cycle showed that the temperatures of the windings and permanent magnets do not exceed the permissible limits. The obtained results can be used in the design of highly efficient electric motors for multirotor unmanned aerial vehicles. The characteristics of the investigated electric motors were calculated using the Simcenter Magnet and Simcenter MotorSolve software packages. References 11, figures 6, tables 4. |
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