Adaptive control for a power generator

An adaptive rate controller of a power generator configured to generate a power signal communicated to a non-linear load, comprising:

• a direct digital synthesizer configured to generate a sinusoidal signal and a cosine signal based on a control signal;
• a first mixer configured to mix the sinusoidal signal and a digital representation of a power signal generated by a power generator and to generate a real component of the digital representation of the power signal;
• a second mixer configured to mix the cosine signal and the digital representation of the power signal and to generate an imaginary component of the digital representation of the power signal;
• and
• a subsystem controller configured to generate the control signal based on the real component and the imaginary component, an input setpoint for the power generator to generate the power signal, and a parameter used to control the power signal.

A power generator, comprising:

• a power amplifier, the power amplifier configured to generate a power signal communicated to a non-linear load in accordance with an input control signal;
• a power controller, the power controller configured to communicate the input control signal to the power amplifier, the power controller including:
• a first combiner, the first combiner configured to generate a first signal by combining an input setpoint for the power generator to generate the power signal and a measured representation of the power signal;
• a first controller, the first controller configured to generate a second signal based on the first signal;
• a mixer, the mixer configured to generate a third signal by mixing the second signal and a feedforward component;
• and
• a second combiner, the second combiner configured to generate a control signal by combining the third signal and a feedback component, wherein the power generator generates the power signal in accordance with the control signal;
• and
• an adaptive controller, the adaptive controller configured to generate at least one adjustment value communicated to the power controller to adjust responsiveness of the power controller, wherein the at least one adjustment value includes one of a feedback component and a feedforward component, the adaptive controller including:
• a direct digital synthesizer configured to generate a sinusoidal signal and a cosine signal based on a second control signal;
• a first mixer configured to mix the sinusoidal signal and a digital representation of the power signal and to generate a real component of the digital representation of the power signal;
• a second mixer configured to mix the cosine signal and the digital representation of the power signal and to generate an imaginary component of the digital representation of the power signal;
• and
• a subsystem controller configured to generate the second control signal based on the real component and the imaginary component, the input setpoint, and a parameter used to control the power signal.