Resonant Clamp Boost Converter for Low-Ripple High Voltage
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Solution Overview
Problem
Conventional boost converters generate excessive ripple waves and consume high power due to switch components being controlled with large working periods, leading to inefficient output voltage increase.
Innovation Solution
The boost converter incorporates a booster circuit with a first inductor, resonant inductor, main and clamp switches, storage capacitors, and a boosted output increasing circuit with additional inductors and capacitors to enhance output voltage while minimizing power consumption and ripple waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If switch components are controlled with large working periods to increase output voltage, then output voltage is improved, but power consumption and ripple waves increase excessively
Solution Approach 1:
The patent divides the boost converter circuit into multiple independent modules: a first boost converter module with switches S1 and S2, a second boost converter module with switches S3 and S4, and associated inductors (L1, L2) and capacitors (C1, C2). This segmentation allows each module to operate semi-independently, reducing the burden on individual switches and enabling more efficient switching operations that achieve high output voltage without excessive power consumption
Solution Approach 2:
The patent combines two boost converter modules in parallel configuration, where both modules work together to supply current to the output. This merging approach distributes the power conversion task across multiple switches and inductors, reducing the working period requirements for each individual switch while maintaining high output voltage, thereby decreasing overall power consumption and ripple waves
2Force
If switch components are controlled with large working periods to increase output voltage, then output voltage is improved, but ripple waves in input signals increase excessively
Solution Approach 1:
By segmenting the circuit into two independent boost converter modules, each module processes a portion of the input current. This segmentation distributes the ripple generation across multiple paths, and the combined output from both modules results in reduced overall ripple waves in the input signals while achieving the desired high output voltage
Solution Approach 2:
The patent assigns different functional roles to different parts of the circuit: the first inductor L1 and second inductor L2 handle current storage and transfer separately, while capacitors C1 and C2 provide localized voltage stabilization. This local quality differentiation allows each component to optimize its function, reducing ripple waves locally which collectively results in minimal overall ripple in the input signals
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 enhanced boost converter achieves high output voltage with reduced power consumption and minimal ripple waves by optimizing circuit components and operation sequences.
Implementation Method 1
a first inductor L1, a resonant inductor Lr, a main switch S1, a clamp switch S2, a first storage capacitor C1
Implementation Method 2
a first storage capacitor C1, an output capacitor C0, and a boosted output increasing circuit 21
Data Source
AI summary
A boost converter is provided. A first terminal of a first inductor of the boost converter is connected to a positive terminal of an input power source. In the of the boost converter, a second terminal of the first inductor is connected to a first terminal of a resonant inductor, and a second terminal of the resonant inductor is connected to a first terminal of a main switch. A second terminal of the main switch is connected to a negative terminal of the input power source. In the of the boost converter, a first terminal of a clamp switch is connected to the second terminal of the resonant inductor, a second terminal of the clamp switch is connected to a first terminal of a first storage capacitor, and a second terminal of the first storage capacitor is connected to the first terminal of the first inductor.