Patent ID: 6339307
Filing Date: 2002-01-15
Classification: H02P

Abstract:
In a device for controlling a reluctance machine with two mutually movable parts and at least one phase winding, the inductance of which depends on the mutual position of the parts, which control device comprises a controllable valve, which is adjustable between an essentially open state and a conducting state, whereby the valve is connected in series with the phase winding, and the phase winding has a resistance; a method for controlling the valve, comprising the steps of:a) measuring a current through the phase winding; b) measuring a voltage across the phase winding and the valve; c) producing an amplitude signal value depending on the measured current and the measured voltage in accordance with a mathematical expression comprising a parameter, the parameter depending on a resistance of the phase winding; d) determining a relationship value between the amplitude signal value and the measured current; e) adjusting the parameter depending on the relationship value; and f) adjusting the valve depending on the amplitude signal value.