Power Supply Device Feedback Control for Waveform Precision
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Solution Overview
Problem
High-voltage pulse generating devices require long operator adjustments due to individual differences in switching elements and electrical load devices, leading to variations in output voltage and current, making it challenging to supply power with a desired time waveform.
Innovation Solution
A power supply device with 'm×n' switching elements, 'm×n' capacitors, 'm' transformers, a current detection unit, and a control unit that generates command signals based on detected current values to drive the switching elements and chargers, ensuring a desired time waveform is achieved without lengthy operator adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple switching elements and transformers are combined to generate high-voltage pulse, then the output power and voltage are improved, but the individual differences in switching elements and load devices cause variations in output characteristics requiring long adjustment time
Solution Approach 1:
The patent implements a feedback control system where the control unit monitors the actual output current and voltage from the pulse generating device and adjusts the switching elements accordingly. This closed-loop feedback mechanism automatically compensates for individual differences in switching elements and load devices, eliminating the need for manual adjustment and ensuring consistent desired waveform output.
Solution Approach 2:
The control unit dynamically adjusts the switching timing and duration of multiple switching elements based on real-time output conditions. By making the switching parameters variable rather than fixed, the system adapts to individual differences in components and load characteristics, maintaining stable output without requiring lengthy adjustment periods.
2Power
If multiple switching elements are used to generate desired waveform, then the power output capability is improved, but the individual differences in switching elements cause variations in output characteristics
Solution Approach 1:
The control unit uses feedback from current and voltage detection to continuously monitor output waveform quality and adjust switching element operation. This ensures that despite individual differences in switching elements, the combined output maintains the desired waveform precision through automatic compensation.
Solution Approach 2:
The system changes the operating parameters (switching timing, duration, and sequence) of individual switching elements based on their specific characteristics and the desired output waveform requirements. By optimizing parameters for each switching element rather than using fixed parameters, the system achieves precise waveform control while utilizing multiple high-power switching elements.
3Manufacturing precision
If manual adjustment is performed to compensate for individual differences, then the output waveform precision can be improved, but the adjustment time and operational complexity increase
Solution Approach 1:
The control unit automatically performs the adjustment function that would otherwise require manual intervention. By implementing self-adjustment through feedback control, the system maintains high output waveform precision while eliminating the need for operator involvement in adjustment procedures, significantly improving ease of operation.
Solution Approach 2:
The automated feedback control system continuously monitors output waveform quality and makes real-time adjustments without operator intervention. This replaces manual adjustment procedures with automatic control, maintaining precision while simplifying operation and reducing the skill level required to operate the device.
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 power supply device can consistently provide a desired time waveform to electrical load devices without requiring extensive operator adjustments, improving efficiency and stability.
Implementation Method 1
superposition of induced voltage by a transformer
Data Source
AI summary
A power supply device includes: “m×n” switching elements; capacitors connected in series to corresponding ones of the switching elements and forming “m×n” series circuits; a charger charging the capacitors; “m” transformers in which primary windings are connected to both ends of corresponding ones of “m” parallel circuits formed by connecting “n” units of the series circuits in parallel to one another with the polarity aligned; a current detection unit detecting, as a detected current value, current flowing through a multistage series circuit in which secondary windings of the transformers are sequentially connected in series so that both ends of the circuit serve as output terminals; a control unit outputting a command signal generated based on the detected current value and a current command being a target value of the current output from the output terminals; and a drive unit driving the switching elements and the charger based on the command signal.