Method and apparatus for modifying the sensitivity of an electrical generator to a nonlinear load
AssigneeAdvanced Energy Industries, Inc.
InventorsMichael Mueller, Michael Lynn Westra, Jeremy Richardson, Gideon Van Zyl
Life of this patent
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Abstract
A method and generator for modifying interactions between a load and the generator are described. The method includes applying output power to the load using a power amplifier, controlling a level of the output power responsive to a power control setting, and adjusting a conduction angle of the power amplifier to reduce a level of sensitivity of the power amplifier to variations of an impedance of the load. The generator includes a compensation subsystem coupled to the power amplifier that controls a conduction angle of the power amplifier to enable a sensitivity of the power amplifier to be adjusted.
Claims25
A generator comprising:
- a power amplifier configured to apply output power to a load responsive to a power control signal and a reference signal;
- a power control system coupled to the power amplifier, the power control system adjusts the power control signal based upon a power set point and the output power;
- and
- a compensation subsystem coupled to the power amplifier, the compensation subsystem controlling a conduction angle of the power amplifier to enable a sensitivity of the power amplifier, to variations in an impedance of the load, to be adjusted.
A method for reducing a sensitivity of a generator to variations in impedance of a load, the method comprising:
- applying output power to the load using a power amplifier;
- controlling a level of the output power responsive to a power control setting;
- and
- adjusting a conduction angle of the power amplifier to reduce a level of sensitivity of the power amplifier to variations of an impedance of the load.
A generator comprising:
- means for applying output power to the load using a power amplifier;
- means for controlling a level of the output power responsive to a power control setting;
- and
- means for adjusting a conduction angle of the power amplifier to reduce a level of sensitivity of the power amplifier to variations of an impedance of the load.
A generator, comprising:
- at least two control inputs wherein at least one of the at least two control inputs is used to modify a sensitivity of the generator to an impedance of a load and at least one of the at least two control inputs is used to control an output power of the generator so that a same level of power can be delivered to the load with different combinations of levels of the at least two control inputs, and a combination of control inputs that produces a desired level of power and an acceptable sensitivity to the impedance of the load may be utilized.
Dependencies are inferred from the claim text.