Advance Topic
A rotor position detection method using sinusoidal approximation
to the phase inductance profile was used in [12].
The phase inductance of a SR motor is assumed to vary as a sinusoidal function
of the rotor position. If two unenergised phases are available for injecting
voltage pulses from the power converter circuit, rotor position can be estimated
as an inverse tangent function of the small change in the phase currents corresponding
to the voltage pulses. The estimated rotor position is used for commutation
purposes and also for training a rotor position prediction neural network online.
The well-trained neural network is used to provide the information about the
rotor position when the rotor position estimated from the estimator is unreliable.
Sensorless Control of Switched
Reluctance Motor - Active Probing Methods
