High Frequency Power Supply Dynamic DC Voltage Control
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Solution Overview
Problem
Conventional high frequency power supplies face efficiency degradation due to load impedance fluctuations, as they fail to adapt the DC source voltage in response to changes in load impedance, leading to reduced amplitude and increased power loss.
Innovation Solution
A high frequency power supply system that includes a DC voltage output unit capable of adjusting its output level, a detection unit to monitor the amplitude of the voltage between amplifying elements, and a control unit to set a target DC voltage based on detected amplitudes, ensuring optimal efficiency by maintaining the amplitude within non-saturated ranges even with fluctuating load impedance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the DC source voltage is kept fixed in conventional high frequency power supplies, then the circuit design is simplified, but power loss increases and efficiency degrades when load impedance fluctuates
Solution Approach 1:
The patent implements dynamic adjustment of the DC source voltage supplied to the amplification unit. The DC voltage output unit changes the DC source voltage level based on detected amplitude information, transforming a static parameter into a dynamic one that adapts to load conditions, thereby reducing power loss while maintaining manageable system complexity through automated control
Solution Approach 2:
The patent employs a feedback mechanism where the amplitude detection unit monitors the voltage amplitude between amplifying elements and provides this information to the target voltage decision unit. This feedback loop enables the system to automatically adjust the DC source voltage to maintain optimal operating conditions, resolving the contradiction between energy efficiency and control complexity
2Productivity
If the DC source voltage is increased to maintain maximal amplitude, then the efficiency improves under constant load, but power loss increases when load impedance fluctuates
Solution Approach 1:
The system dynamically adjusts the DC source voltage based on real-time amplitude detection rather than maintaining a fixed high voltage. This allows the amplification unit to operate at optimal efficiency under constant load while automatically reducing power consumption when load impedance fluctuates, thereby improving productivity without proportionally increasing energy loss
Solution Approach 2:
The patent changes the operating parameter (DC source voltage level) of the amplification unit based on detected conditions. By adjusting this parameter dynamically, the system maintains maximal amplitude and high efficiency when needed while reducing power loss during impedance fluctuations, effectively resolving the contradiction between productivity and energy loss
3Loss of energy
If the amplitude of voltage between amplifying elements is allowed to saturate, then the power loss is reduced, but the manufacturing precision and control accuracy deteriorate
Solution Approach 1:
The amplitude detection unit continuously monitors the voltage amplitude between amplifying elements and provides feedback to the target voltage decision unit. This feedback mechanism enables precise control of the amplitude, preventing saturation while maintaining optimal operating points that minimize power loss, thereby resolving the contradiction between energy efficiency and control precision
Solution Approach 2:
The patent replaces manual or fixed mechanical voltage setting with an automated electronic control system that uses detection and decision units to dynamically adjust the DC source voltage. This substitution enables precise amplitude control without saturation while minimizing power loss, resolving the contradiction between energy efficiency and control accuracy
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces power loss and maintains high efficiency by dynamically adjusting the DC source voltage in response to load impedance fluctuations, ensuring the amplitude of the high frequency voltage remains maximal and within non-saturated ranges.
Implementation Method 1
an amplification unit (14) including a plurality of amplifying elements to amplify and output the high frequency voltage signal output by the oscillation unit (13), utilizing the DC voltage output by the DC voltage output unit (19) as an energy source for the amplification
Data Source
AI summary
A high frequency power supply includes a DC source unit (19) that outputs a DC voltage Vdc having an output level corresponding to a target voltage, an oscillation unit (13) that outputs a high frequency voltage signal having an output level corresponding to a target power, an amplification unit (14) that includes a plurality of amplifying elements, and amplifies and outputs the high frequency voltage signal output by the oscillation unit (13) utilizing the DC voltage output by the DC source unit (19), an output voltage detection unit (21) that detects an amplitude of the voltage between the amplified-side terminals of the amplifying elements in the amplification unit (14), or an amplitude of a voltage that is proportional to the amplitude of the voltage between the amplified-side terminals, and a target voltage decision unit (22) that decides a target value of the DC source voltage Vdc to be outputted by the DC source unit (19) based on the detection result from the output voltage detection unit (21).