This paper deals with the flux estimation for sensorless induction motor drives. The linearized model of the speed-adaptive full-order flux observer is applied to help choosing the observer gain and the speed-adaptation gains. It is shown that the linearized model reveals potential instability problems that are difficult to find by other means. An observer gain and a method to vary the speed-adaptation gains in the field-weakening region are proposed. Experimental results show stable operation in a very wide speed range.
|Title of host publication||28th Annual Conference of the IEEE Industrial Electronics Society|
|Subtitle of host publication||International Conference on Industrial Electronics, Control and Instrumentation (IECON'2002)|
|Place of Publication||Sevilla, Spain|
|Publication status||Published - 5 Nov 2002|
|MoE publication type||A4 Article in a conference publication|