DC Power Distribution Voltage Ratio Control for Converter Efficiency
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Solution Overview
Problem
Existing DC power supply and distribution systems face efficiency decreases when attempting to reduce load power consumption, as the converter's power consumption increases, leading to overall system inefficiency.
Innovation Solution
The proposed DC power supply and distribution system incorporates multiple power distribution lines, converters, and controllers. The first converter receives AC voltage from a main power source, converts it into DC voltages, and supplies them to the power distribution lines. The second converter receives power from a subordinate power source, converts it into DC powers, and also supplies them to the power distribution lines. A controller enhances the efficiency of the second converter by controlling the first converter to maintain a predetermined ratio of DC voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the converter's output voltage is controlled so as to reduce the load's power consumption, then the load's power consumption is reduced, but the system efficiency decreases
Solution Approach 1:
The controller continuously monitors the operating conditions of both converters and adjusts their parameters in real-time. By receiving voltage information from both converters and dynamically adjusting the first converter's output, the system maintains optimal operating points that balance load power consumption reduction with overall system efficiency.
Solution Approach 2:
The system optimizes efficiency by maintaining specific parameter relationships between converters. The predetermined voltage ratio between the first and second converters is carefully controlled to ensure the second converter operates in its high-efficiency region while still achieving load power consumption reduction.
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 configuration enhances the overall efficiency of the DC power supply and distribution system by optimizing the ratio of DC voltages and reducing unnecessary power consumption, thereby improving system performance.
Implementation Method 1
The first converter receives a voltage from a first power source, converts the received voltage into a plurality of DC voltages
Implementation Method 2
The second converter receives a power from a second power source, converts the received power into a plurality of DC powers
Data Source
AI summary
The present DC power supply and distribution system comprises: a plurality of power distribution lines each connected to a respective one of a plurality of loads; a first converter to receive an AC voltage from a commercial AC power source, convert the received AC voltage into a plurality of DC voltages and supply each of the plurality of DC voltages to a respective one of the plurality of power distribution lines; a second converter to receive a DC power from a power generating and/or storing source, convert the received DC power into a plurality of DC powers, and supply each of the plurality of DC powers to a respective one of the plurality of power distribution lines; and a controller to enhance the second converter in efficiency by controlling the first converter so that a ratio of the plurality of DC voltages is a predetermined first ratio.