Configuration of Current and Speed Controllers for a Simplified Sensorless Vector Control System of IPMSM

Extended electro motive force (EMF) based sensorless vector control of IPMSM is one of the representative methods. We have proposed a simplified sensorless vector control system without using an observer on the basis of the extended EMF. In this paper, we have considered the transient characteristics for different combination of current and the speed controllers. A lineal model of proposed system is derived by considering those controllers and system stability is clarified by the root loci. Furthermore, simulation and experimental results are compared and discussed.