PROJECT TITLE :
Design Method of Adaptive Full Order Observer With or Without Estimated Flux Error in Speed Estimation Algorithm
The performance of adaptive full order observer for sensorless induction motor drives can be improved further though it's been researched for several years. In this paper, 2 totally different design ways for improving the speed estimation stability and robustness are proposed: 1) In classical speed estimation algorithm utilized in adaptive full order observer, the estimated rotor flux error is neglected. A sturdy design methodology of feedback gains with classical speed estimation algorithm is proposed. Compared with existed 3 main design ways of feedback gains, the steadiness of speed estimation and estimated speed error are improved. two) A robust speed estimation algorithm with estimated rotor flux error and the corresponding feedback gains are proposed during this paper. Through Lyapunov's theorem, the steadiness of proposed speed estimation algorithm is proved. The steadiness of flux estimation and estimated speed error can be improved much more. Finally, the feasibility of 2 proposed methods is verified by experiments.
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