Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
162 words
A control apparatus for a synchronous machine with a field and an armature windings, one of the windings being provided on a stator of the machine and the other winding on a rotor thereof, comprising a converter having a plurality of thyristors for controlling an electric power fed to the armature winding, means for producing a signal corresponding to the position of the rotor, means for generating an armature current pattern signal on the basis of both the output signal of the producing means and the difference between a speed reference and an actual rotating speed of the rotor, and means for controlling the thyristors in accordance with the deviation between an actual armature current and the armature current pattern signal, characterized by means for detecting a phase difference between the actual armature current and the output signal of the producing means and means for shifting the output signal of the producing means in accordance with the output of said detecting means.
Claim 2
Dependent Claim
162 words
A control apparatus for a synchronous machine with a field and an armature windings, one of the windings being provided on a stator of the machine and the other winding on a rotor thereof, comprising a converter having a plurality of thyristors for controlling an electric power fed to the armature winding, means for producing a signal corresponding to the position of the rotor, means for generating an armature current pattern signal on the basis of both the output signal of the producing means and the difference between a speed reference and an actual rotating speed of the rotor, and means for controlling the thyristors in accordance with the deviation between an actual armature current and the armature current pattern signal, characterized by means for detecting a phase difference between the actual armature current and the output signal of the producing means and means for shifting the output signal of the producing means in accordance with the output of said detecting means.
Claim 3
Dependent Claim
53 words
A control apparatus as claimed in claim 2, characterized in that there is further provided voltage detecting means for detecting the voltage applied to the armature winding, and that said detecting means detects the phase difference on the basis of the actual armature current and the output signal from said voltage detecting means.
Claim 4
Dependent Claim
40 words
A control apparatus as claimed in claim 2, characterized in that said detecting means produces the output in accordance with the non-effective power on the basis of the actual armature current and the output signal from said voltage detecting means.
Claim 5
Dependent Claim
34 words
A control apparatus as claimed in claim 1, characterized by means for regulating the amplitude of the armature current pattern signal from the generating means in accordance with the output of said detecting means.
Claim 6
Dependent Claim
48 words
A control apparatus as claimed in claim 1, characterized in that there are further provided voltage detecting means for detecting the voltage applied to the armature winding, and means for feeding the field winding with the electric power in accordance with the output from said voltage detecting means.