Three-Stage Power Supply System Using Segmented Voltage Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional power supply systems with regulated power converters suffer from reduced conversion efficiency and increased size and complexity due to limited specifications, leading to higher transformation losses and complex layout designs.
Innovation Solution
The system employs a three-stage power supply configuration with a first converting stage using a regulated power converter, followed by two non-regulated power converters in series, allowing for a wider voltage range and reduced current output, which reduces transmission losses and simplifies layout design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If regulated power converters are used to maintain predetermined output voltages at each stage, then voltage stability is improved, but conversion efficiency deteriorates due to limited specifications and higher transformation losses
Solution Approach 1:
The power supply system is divided into multiple converting stages, where only the first and last stages use regulated power converters, while intermediate stages use non-regulated power converters. This segmentation allows voltage stability to be maintained only where necessary (at input and output) while reducing transformation losses in intermediate stages by operating at higher, more efficient voltage levels.
2Stability of the object's composition
If regulated power converters with limited specifications are used, then voltage regulation is improved, but device complexity and size increase
Solution Approach 1:
The system segments the power conversion function across multiple stages, placing regulated converters only at the beginning and end of the conversion chain. Intermediate non-regulated converters have simpler designs and smaller footprints, reducing overall system complexity and layout difficulty while maintaining necessary voltage regulation at critical points.
3Stability of the object's composition
If multiple regulated power converters are used in series, then voltage control is improved, but system size increases
Solution Approach 1:
The power supply system is segmented into converting stages with different regulation requirements. By placing non-regulated power converters in intermediate stages, the system achieves the necessary voltage transformation with smaller, more compact components, reducing the overall power supply system size while maintaining voltage control at the input and output stages.
Data Source
AI summary
A power supply system includes a first converting stage, a second converting stage, and a third converting stage. The first converting stage is configured to generate a first voltage according to a first input voltage. The second converting stage is coupled to the first converting stage in series, and includes a first non-regulated power converter and a second non-regulated power converter. The first non-regulated power converter is configured to generate a second voltage according to the first voltage. The second non-regulated power converter is configured to generate a third voltage according to the second voltage. The second voltage is higher than the third voltage, and a varying range of the second voltage is wider than a varying range of the third voltage. The third converting stage is configured to generate a first output voltage according to the third voltage.