Variable-Class Amplifier Conduction Angle Control
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Solution Overview
Problem
Electrical generators with reactive source impedance are highly sensitive to variations in nonlinear load impedance, leading to instability in output power due to interdependent changes in generator output power and load impedance.
Innovation Solution
A power amplifier with a compensation subsystem that adjusts the conduction angle and power control signal to reduce sensitivity to load impedance variations, using a combination of impedance measurement and compensation signal generation to maintain stable output power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the generator uses reactive source impedance to reduce cost and size, then manufacturing cost and device size are reduced, but sensitivity to load impedance variations increases causing output power instability
Solution Approach 1:
The patent changes the operating parameters of the power amplifier by dynamically adjusting the conduction angle. This parameter adjustment modifies the amplifier's sensitivity characteristics, allowing the system to maintain stable output power despite using reactive source impedance for cost and size reduction.
Solution Approach 2:
The patent implements a feedback mechanism where the system monitors output power and load impedance conditions, then adjusts the conduction angle accordingly. This closed-loop control compensates for the increased sensitivity to load variations, maintaining output power stability while using economical reactive impedance design.
2Volume of moving object
If the generator uses reactive source impedance to reduce device size, then device size is reduced, but sensitivity to load impedance variations increases causing output power instability
Solution Approach 1:
The patent changes the operating parameters of the power amplifier by dynamically adjusting the conduction angle. This parameter adjustment modifies the amplifier's sensitivity characteristics, allowing the system to maintain stable output power despite using reactive source impedance for size reduction.
Solution Approach 2:
The patent implements a feedback mechanism where the system monitors output power and load impedance conditions, then adjusts the conduction angle accordingly. This closed-loop control compensates for the increased sensitivity to load variations, maintaining output power stability while using compact reactive impedance design.
3Reliability
If the conduction angle is adjusted to reduce sensitivity to load impedance, then output power stability is improved, but amplifier efficiency may be affected
Solution Approach 1:
The patent employs dynamic adjustment of the conduction angle based on real-time operating conditions. Rather than using a fixed conduction angle that would compromise efficiency, the system adaptively modifies the angle to balance stability requirements with efficiency considerations across different operating points.
Solution Approach 2:
The patent changes the operating parameters of the power amplifier by dynamically adjusting the conduction angle. This parameter adjustment modifies the amplifier's sensitivity characteristics, allowing the system to maintain stable output power despite using reactive source impedance for cost and size reduction.
Data Source
AI summary
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.