Modular Power Converter Stages for Voltage Transformation
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Solution Overview
Problem
Conventional power converters combine voltage transformation and regulation in a single stage, leading to inefficient use of components and limited optimization of each function, as certain components are used for both tasks, hindering the ability to optimize transformation and regulation stages independently.
Innovation Solution
The design separates the power converter into distinct transformation and regulation stages, allowing for independent optimization of each function, with a controller coordinating the switched-capacitor network and inductance to achieve efficient voltage transformation and regulation, and includes isolated control circuits for galvanic isolation and efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If voltage transformation and regulation are combined in a single stage, then device complexity is reduced, but optimization of each function is limited and energy efficiency deteriorates
Solution Approach 1:
The power converter is divided into two independent stages: a transformation stage (switched-capacitor network) and a regulation stage (controlling circuit with inductance). This segmentation allows each stage to be optimized for its specific function, improving overall energy efficiency while maintaining manageable device complexity through modular architecture.
2Loss of energy
If transformation and regulation functions are separated into distinct stages, then independent optimization of each function is enabled and energy efficiency improves, but device complexity increases
Solution Approach 1:
The converter is segmented into specialized transformation and regulation stages, each optimized for its function. The transformation stage uses switched-capacitor networks for voltage conversion, while the regulation stage uses inductance-based circuits for precise output control, reducing energy losses through functional specialization.
Solution Approach 2:
The transformation stage is designed to be universally applicable across different voltage conversion ratios by reconfiguring the switched-capacitor network, while the regulation stage universally handles output stabilization. This multi-functionality approach allows independent optimization without proportionally increasing overall complexity.
3Ease of manufacture
If a single-stage converter is used, then manufacturing is simpler, but component utilization efficiency deteriorates
Solution Approach 1:
The converter is manufactured as two separate modular stages that can be independently fabricated and then integrated. This segmentation allows each stage to use components optimized for its specific function, improving component utilization efficiency while maintaining ease of manufacture through standardized modular production processes.
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
This modular approach enables efficient voltage transformation and regulation, allowing for flexible design configurations and reduced energy losses by optimizing each stage independently, improving the overall performance of the power converter.
Implementation Method 1
switched-capacitor converters are switch-mode power converters that primarily use capacitors to transfer energy. These converters transfer energy from an input to an output by using switches to cycle a network of capacitors through different topological states
Implementation Method 2
an apparatus for controlling a power converter having an inductance and a switched-capacitor network that are connected to transform a first voltage into a second voltage
Data Source
AI summary
An apparatus for controlling a power converter that includes an inductance and a switched-capacitor network that cooperate to transform a first voltage into a second voltage features a controller, a switched-capacitor terminal for connection to the switched-capacitor network, and switches. at least one of which connects to the switched-capacitor terminal.