Systems and methods for synchronous power generation

A method of controlling an output of a synchronous electrical machine for powering a load, comprising:

• providing an electronic element configured to output a flux value based on a first input value and a second input value, wherein the first input value is based on a difference value between a desired output value and a corresponding actual output value;
• wherein the second input value is an operating frequency of the synchronous electrical machine;
• and wherein the flux value varies with changes in the difference value and the operating frequency;
• operating the synchronous electrical machine;
• determining the first input value while operating the synchronous electrical machine;
• detecting the second input value while operating the synchronous electrical machine;
• inputting the first input value and the second input value into the electronic element;
• outputting the flux value based on the first input value and the second input value;
• determining a flux component current and a torque component current based on:
• flux value;
• controlling a stator winding current in a stator winding of the electrical machine based on the torque component current;
• and
• controlling an excitation current of a field winding of the electrical machine using the flux component current to achieve the desired output value.

An aircraft power generation system, comprising:

• an engine;
• a synchronous generator coupled to and powered by the engine, wherein the synchronous generator has a field winding and a stator winding;
• a first electronic element configured to output a flux value based on a first input value and a second input value, wherein the first input value is based on a difference value between a desired output value of the power generation system and a corresponding actual output value;
• wherein the second input value is an operating frequency of the synchronous generator;
• and wherein the flux value output by the first electronic element varies with changes in the difference value and the operating frequency during the operation of the synchronous generator;
• a second electronic element configured to output the first input value;
• a third electronic element coupled to the first electronic element and the second electronic element, and configured as a transfer function operable to convert the flux value and the first input value into a torque component current value configured for controlling a stator winding current in the stator winding;
• and
• a fourth electronic element coupled to the first electronic element and configured to convert the flux value into a field winding reference value configured for controlling an excitation current in the field winding.