Output control apparatus and method for field winding type dynamo-electric machine

A control method for controlling an exciting current supplied to an exciting winding of a field winding type dynamo-electric machine to obtain a demanded output thereof, comprising steps of:

• an exciting current detecting step configured to detect the exciting current of the dynamo-electric machine, and to output a detected exciting current;
• a rotation speed detecting step configured to detect a rotation speed of a rotor of dynamo-electric machine and to output a detected rotation speed of the rotor;
• an output estimating step configured to estimate an output of the field winding type dynamo-electric machine based on a predetermined relation among the detected exciting current, the detected rotation speed, and the output of the field winding type dynamo-electric machine, and to output an estimated output resulting from the estimation;
• and
• an exciting current control step configured to correct the exciting current of the f dynamo-electric machine based on the estimated output of the dynamo-electric machine so as to obtain the demanded output, and to supply the corrected exciting current to the exciting winding of the dynamo-electric machine;
• wherein the output estimating step performs an estimation of the output of the field winding type dynamo-electric machine considering a multi-valued functionality of the output of the field winding type dynamo-electric machine with respect to the exciting current of the exciting winding.

A control method for controlling an exciting current of a multi-phase field winding type dynamo-electric machine having a rotor means, a stator means including an exciting winding, and air gap therebetween so as to obtain a demanded generation torque having a parametrical expression in an electric current forms such as a torque command current and a rotor flux command current, comprising steps of:

• a) measuring a rotor position and a rotation speed of the rotor;
• b) calculating a rotor flux parameters from the measured rotor position and rotation speed of the rotor;
• c) determining a phase and an amplitude of an input electric current towards each exciting winding of the stator means based on the rotor flux and the demanded generation torque with taking into consideration a multi-valued functionality of an armature winding flux linkage or its equivalence and the exciting current of the exciting winding;
• and
• d) controlling a field orientation of a rotor command flux of the rotor means based on the determined phase and the determined amplitude of the input electric current of each exciting winding.

A control apparatus for controlling an exciting current of a multi-phase field winding type dynamo-electric machine having a rotor means, a stator means including an exciting winding, and air gap therebetween so as to obtain a demanded generation torque having a parametrical expression in an electric current forms such as a torque command current and a rotor flux command current, comprising:

• a) means for measuring a rotor position and a rotation speed of the rotor;
• b) means for calculating a rotor flux parameters from the measured rotor position and rotation speed of the rotor;
• c) means for determining a phase and an amplitude of an input electric current towards each exciting winding of the stator means based on the rotor flux and the demanded generation torque with taking into consideration a multi-valued functionality of an armature winding flux linkage or its equivalence and the exciting current of the exciting winding;
• and
• d) means for controlling a field orientation of a rotor command flux of the rotor means based on the determined phase and the determined amplitude of the input electric current of each exciting winding.