Tunable DC Voltage Circuit Resonance Control
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Solution Overview
Problem
Conventional switching boost converters have limited voltage conversion ratios, complex control circuitry, and suffer from switching losses due to power switch operations, making them inefficient for high voltage conversion applications.
Innovation Solution
A tunable DC voltage generating circuit comprising a resonance circuit, rectifying circuit, current control unit, stabilizing capacitor, and control circuit, which uses a series or parallel connection of inductors and capacitors to generate a resonance signal, rectify it, and adjust current to achieve a high voltage output without power switches, thereby simplifying control circuitry and eliminating switching losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional switching boost converter is used, then voltage conversion can be achieved, but the voltage conversion ratio is limited to less than ten
Solution Approach 1:
The patent applies resonance oscillation (analogous to mechanical vibration principles) by configuring the inductor and capacitor to operate at their resonant frequency. This resonance mechanism enables the circuit to achieve a voltage conversion ratio of 2π or higher, fundamentally overcoming the limitation of conventional switching boost converters that are restricted to ratios below 10.
2Ease of operation
If power switches are used for voltage conversion, then voltage regulation can be achieved, but switching losses occur
Solution Approach 1:
The patent replaces the mechanical switching system with a resonance-based electromagnetic system. By using the natural resonant oscillation of the LC circuit and a rectifying circuit, the invention eliminates the need for power switches and their associated switching losses, while still achieving voltage regulation through the resonance mechanism.
3Ease of operation
If power switches and control circuits are used, then voltage control can be achieved, but the control circuit becomes complex
Solution Approach 1:
The patent implements self-service control by utilizing the natural resonant frequency of the LC circuit. The resonance circuit automatically oscillates at its predetermined frequency, and the rectifying circuit naturally converts this resonance to DC output. This eliminates the need for complex external control circuits, as the system self-regulates through its inherent resonant properties.
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 circuit achieves a high voltage conversion ratio, simplifies control circuit design, and eliminates switching losses, enabling flexible voltage adjustment and efficient energy conversion suitable for applications requiring wide voltage ranges.
Implementation Method 1
a resonance circuit comprising an inductor and an input capacitor coupled in a series connection, and arranged to operably receive an input signal and to operably generate a resonance signal
Implementation Method 2
a rectifying circuit, coupled with the output node, arranged to operably rectify the resonance signal
Data Source
AI summary
A tunable DC voltage generating circuit includes: a resonance circuit including an inductor and an input capacitor coupled in a series connection, and arranged to operably receive an input signal and to operably generate a resonance signal at an output node between the inductor and the input capacitor; a rectifying circuit arranged to operably rectify the resonance signal; a current control unit, coupled with an output of the rectifying circuit, and coupled with the inductor or the input capacitor in a parallel connection; a stabilizing capacitor, coupled with the output of the rectifying circuit, arranged to operably provide a DC output signal having a voltage level greater than that of the input signal; and a control circuit arranged to operably adjust a current passing through the current control unit according to a setting signal to thereby manipulate the DC output signal.