ПОКРАЩЕНА ОЦІНКА РОТОРНОГО ПОТОКУ ДЛЯ ПОЛЬОВО-ОРІЄНТОВАНОГО КЕРУВАННЯ АСИНХРОННИМИ ДВИГУНАМИ

• Дата: 2025
• Автори: Tran, C.D., Kuchar, M., Nguyen, P.D.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут електродинаміки НАН України, Київ 2025
• Теми: польово-орієнтоване керування; MRAS; модель напруги; модель струму; опір ротора; опір статора
• Онлайн доступ: https://techned.org.ua/index.php/techned/article/view/1724
• Назва журналу: Technical Electrodynamics

The field-oriented control (FOC) method is a typical technique for precise speed control in three-phase induction motor drives. The resistance values of the motor vary from their rated values due to the effects of increased temperature during operation. The research aims to enhance the accuracy of rotor flux estimation to sustain the performance of the FOC method under resistance variations. The paper proposes an improved method for estimating and integrating motor resistances into the rotor flux calculation. A proposed structure, including the voltage, current, and virtual current models, is applied to calculate the stator and rotor resistance. Estimated resistance values replace the rated resistance values in the current model, which are used to calculate the rotor flux vector. Simulations are conducted to validate the accuracy of the estimated resistance values and the effectiveness of the improved FOC method under various operating conditions. The simulation results demonstrate that the estimated resistances closely match the actual resistance values and confirm that the enhanced FOC method operates accurately and stably, even under changes in motor resistance. References 18, figures 9.