Dual Converter Voltage Boosting for Regenerative Energy Efficiency
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Solution Overview
Problem
Conventional voltage conversion devices face difficulties in efficiently boosting relatively low regenerative voltages, as they are often configured to handle only high regenerative voltages, leading to reduced conversion efficiency and increased boosting ratios.
Innovation Solution
A voltage conversion device comprising a first converter for boosting high regenerative voltages to a first voltage and a second converter for boosting low regenerative voltages to a second voltage, with a controller switching between them based on input voltage levels, allowing efficient boosting of both high and low regenerative voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a voltage conversion device is configured to boost high regenerative voltages, then it can efficiently handle high voltage inputs, but it becomes difficult to boost low regenerative voltages
Solution Approach 1:
The voltage conversion device is divided into a first converter for high voltage boosting and a second converter for low voltage boosting. The controller segments the operating range by switching between converters based on whether the regenerative voltage is above or below a reference voltage, allowing each converter to be optimized for its specific voltage range while maintaining overall system versatility
Solution Approach 2:
The voltage conversion device achieves multi-functionality by incorporating two converters with different boosting capabilities. The first converter handles high voltage regenerative inputs efficiently, while the second converter handles low voltage inputs, making the overall system adaptable to a wide range of regenerative voltages without sacrificing efficiency in either range
2Device complexity
If a single converter is used for both high and low voltage boosting, then device complexity is reduced, but conversion efficiency decreases for low voltage inputs
Solution Approach 1:
Rather than using a single converter designed for high voltage, the system segments the conversion function into two specialized converters. The first converter is optimized for high voltage regenerative boosting, while the second converter is optimized for low voltage boosting, ensuring high conversion efficiency in both operating ranges while accepting increased system complexity
3Adaptability or versatility
If the boosting ratio is increased to handle low regenerative voltages, then low voltage boosting becomes possible, but conversion efficiency is reduced
Solution Approach 1:
The system applies local quality by having different converters with different boosting characteristics in different parts of the voltage range. The second converter provides a higher boosting ratio specifically for low voltage inputs, while the first converter provides a lower boosting ratio for high voltage inputs, ensuring optimal efficiency in each local operating range
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 device efficiently boosts regenerative voltages across a wide range, maintaining high conversion efficiency by using a dedicated converter for each voltage level, reducing coil size and resistance, and ensuring balanced charging of battery cell groups.
Implementation Method 1
a first converter that boosts a direct current input voltage that is equal to or higher than a predetermined reference voltage to a direct current first voltage, a second converter that boosts a direct current input voltage that is lower than the reference voltage to a direct current second voltage
Data Source
AI summary
A voltage conversion device includes first and second converters. The first converter boosts an input voltage equal to or higher than a reference voltage (high regenerative voltage) to a first voltage more efficiently than the second converter boosting the input voltage equal to or higher than the reference voltage (high regenerative voltage) to the first voltage. The second converter boosts an input voltage lower than the reference voltage (low regenerative voltage) to a second voltage more efficiently than the first converter boosting the input voltage lower than the reference voltage (low regenerative voltage) to the second voltage. The voltage conversion device causes the first converter to boost the input voltage when the input voltage is equal to or higher than the reference voltage, and causes the second converter to boost the input voltage when the input voltage is lower than the reference voltage.