TAILIEUCHUNG - torque control Part 7

Tham khảo tài liệu 'torque control part 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 110 Torque Control Fig. 26. Adaptive stator fluxes estimator Fig. 27. 45 KW motor behavior with the adaptive stator flux estimator 111 Induction Motor Vector and Direct Torque Control Improvement during the Flux Weakening Phase It is possible to combine the two previous estimators. The first one can be used for high speed while the second estimator can be used for low speed range. In this case there is no need to program the adaptive estimator of the stator fluxes since it will not work during the flux weakening phase. 7. Conclusion This chapter has presented a full study of the magnetic state variation of the induction motor. Using a finite elements calculation program it was possible to establish a two-phase model that takes into account the variation of the saturation level. A very simple resolution method of this new model was presented. The dynamic response of the new model was validated by comparing it to the dynamic response of the induction motor given by the finite element calculation program. After establishing the new model it was possible to review the advanced control laws like the FOC and the DTC laws. A new saturated FOC law was developed in order to enhance the dynamic behavior of the motor during the flux weakening phase because of the difference between the motor cyclic inductances values and the values of the cyclic inductances introduced in the controllers. Concerning the DTC law it was shown that a small error in the stator resistor value will highly influence the stator flux estimation which is done using the stator electric equation. A new stator fluxes estimator was developed using rotor electric equations. This estimator is less sensitive to the motor temperature variation but it is more sensitive to the variation of the saturation level. An adaptive solution was proposed to tune the estimator parameters according to the saturation level of the motor. Nevertheless the adaptive part added to the DTC algorithm its computation time remains .

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.