(1) Furthermore, different polygonal flux linkage locus's fluent switching point is also found, which overcomes the motor' switching failure and improves the speed adjusting dynamic performance.

(2) Utilizing flux linkage and phase current, the output torque is calculated, and PID control is used to decrease torque error.

(3) With the proposed full-order observer, the flux linkage of motor can be accurately observed and high performance achieved without shaft encoder.

(4) Then using fuzzy algorithm with phase current and flux linkage as inputs, the rotor position can be detected.

(5) A new on-line permanent magnet flux linkage identification method for PMSM is presented to reduce the negative influence caused by demagnetization or position feed-back error.

(6) It directly controls the electromagnetic torque and stator flux linkage. It has simple structure, directly control means and high stable and transient performance.

(7) In asynchronous machine there exist main kinds of flux linkage, that is: rotor flux-linkage, air-gap flux-linkage and stator flux-linkage.

(8) Compared with constant flux linkage, exciting current is minished with light load.

(9) U-I flux linkage model can be set exactly at low speed for considering the effects of temperature to stator resistance.

(10) The inductances of the armature windings and the field windings are calculated by using the flux linkage method.

(11) This paper presented a mathematic fitting analytical modeling method which depends on all the static magnetizing feature to fit an analytical flux linkage model.

(12) The authors introduce a voltage-source GTO inverter VVVF system with flux linkage locus controlled by single-ship microcomputer.

(13) By placing auxiliary gauge-winding on the stator pole and adopting hardware integrator(), the flux linkage is measured.

(14) In order to implement direct trust control, voltage vectors were selected in the system according to the error between the true values and their reference of the trust and primary flux linkage.

(15) This strategy can make use of switching condition of three-level inverter, more precise voltage vector can be produced so that the torque ripple and the flux linkage error can be reduced.

(16) Classical direct torque control method adopts the technique of 6 polygon flux linkage voltage modulation. It will generate torque pulsation and harmonic interference.

(17) The position estimation is simple and is obtained by only calculating the extended flux linkage. The estimating technique is not strongly related to the parameters of the motor.

(18) When the switched reluctance motors operate in two phase excitation mode, the phase flux linkage will be reduced due to the high magnetic saturation in the stator and the rotor yoke.

(19) To achieve the precision control of phase current or phase flux linkage in switched reluctance motor (SRM), the higher switching frequency of converter is required to increase dynamic response speed.

(20) Considering the system's wide speed range and IPM's switching frequency's top limit, the variable flux linkage locus structure control has been executed in the full speed adjusting range.

(21) All inductances , speed voltage coefficients were calculated according to winding theory so that voltage and flux linkage equations were gained.

(22) After a brief introduction of the two-phase excitation scheme, the flux linkage model of a SRM under two-phase excitation is developed using FEA.