Multifunctional Power Converter Reconfigurable Architecture
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Solution Overview
Problem
Existing power converters are bulky, expensive, and inconvenient due to the need for multiple independent converters to meet various load voltage requirements, and they struggle with voltage decay or fluctuations from DC sources like fuel cells and solar cells.
Innovation Solution
A multifunctional power converter with a configurable architecture that includes an input power stage, electrical power conversion circuits, and a controller to automatically select and generate multiple output voltages and frequencies, allowing for conversion of a wide range of DC input voltages to various DC and AC output voltages, including 32VDC, ±270VDC, 115VAC, and 230VAC, with reduced components and improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple independent power converters are used to meet various load voltage requirements, then the power converter can provide different output voltages, but the device becomes bulky, heavy, and expensive
Solution Approach 1:
The patent implements a single power converter that can provide multiple output voltages (28V, 56V, 112V, 224V) by reconfiguring the transformer windings and switching circuits. The converter uses a unified structure with reconfigurable components instead of multiple independent converters, achieving multi-functionality while reducing weight and cost.
Solution Approach 2:
The patent combines multiple power conversion functions into a single integrated converter unit. The transformer, switching circuits, and control system are merged into one device that can deliver different output voltages through internal reconfiguration, eliminating the need for separate converters for each voltage level.
2Adaptability or versatility
If multiple independent power converters are used to meet various load voltage requirements, then the power converter can provide different output voltages, but the device complexity increases
Solution Approach 1:
The patent employs dynamic reconfiguration of the power converter through switching circuits that can change the transformer winding connections and circuit topology based on the desired output voltage. This dynamic switching capability allows a single static structure to provide multiple output configurations without requiring multiple independent converters.
Solution Approach 2:
The controller and switching circuits are designed to universally handle multiple output voltage configurations through a single integrated system. The same hardware components can be reconfigured to provide 28V, 56V, 112V, or 224V outputs, reducing overall device complexity compared to having separate converters for each voltage level.
3Adaptability or versatility
If DC voltage sources are used, then the power converter can operate from various DC sources, but voltage decay or fluctuations occur over time
Solution Approach 1:
The patent incorporates feedback control mechanisms that continuously monitor the input voltage from DC sources and adjust the converter operation accordingly. This feedback system compensates for voltage decay or fluctuations over time, maintaining stable output voltages despite variations in the DC input source.
Solution Approach 2:
The converter dynamically adjusts its operating parameters based on the input voltage conditions. When voltage decay or fluctuations are detected, the controller modifies switching duty cycles, transformer winding configurations, or circuit topology to compensate for the changes and maintain reliable output voltage levels.
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 solution provides a compact, lightweight, and efficient power converter that can adapt to different load requirements, simplifying design and enhancing reliability by converting a wide input voltage range to various output levels, matching common aircraft and vehicle power system voltages, and offering simplified component usage.
Implementation Method 1
an input power stage configured to receive a DC input voltage from a DC power source and convert the DC input voltage to an AC or DC output voltage
Data Source
AI summary
The multifunctional power converter apparatus and method includes an input power stage configured to receive a DC input voltage from a DC power source and convert the DC input voltage to an AC or DC output voltage. At least one electrical power conversion electronic circuit is connected to an output of the input power stage, a DC output circuit; an AC output circuit; and a controller configured to control the input power stage, the DC output circuit and the AC output circuit. The controller is configured to automatically control the power converter output voltage based on a preselected user input.