Three-Wire DC Bus Layout for Higher Transmission Power
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Solution Overview
Problem
Conventional single-phase two-wire direct-current buses have low power transmission capacity, and increasing the number of conductors or voltage to enhance transmission power is costly and may lead to incompatibility with existing equipment.
Innovation Solution
A two-phase three-wire direct-current bus system is introduced, comprising a direct-current positive conductor, a neutral conductor, and a direct-current negative conductor, allowing for two power supply groups to supply power to loads, thereby improving transmission power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of conductors or voltage is increased to enhance transmission power, then transmission power is improved, but costs increase and compatibility with existing equipment deteriorates
Solution Approach 1:
The patent segments the power transmission function by creating two independent power supply groups (first and second power supply groups) within the same bus structure. Each group can independently supply power to loads, allowing the system to achieve higher transmission power through parallel operation of multiple groups rather than increasing voltage or conductor size, thus avoiding compatibility issues and cost increases
Solution Approach 2:
The neutral conductor serves multiple functions: it acts as a return path for the first power supply group and as a phase conductor for the second power supply group. This multi-functionality allows the bus to support two independent power transmission paths using the same physical conductors, effectively doubling transmission capacity without adding more conductors or increasing voltage
2Power
If the number of conductors is increased to enhance transmission power, then transmission power is improved, but device complexity increases
Solution Approach 1:
The neutral conductor is designed to serve dual purposes: as the negative conductor for the first power supply group and as the positive conductor for the second power supply group. This multi-functional design enables the system to achieve two independent power transmission paths using only three conductors (positive, neutral, negative), effectively doubling transmission capacity without increasing the number of conductors
Solution Approach 2:
The patent merges the functions of multiple conductors into fewer physical elements. By having the neutral conductor perform both as a return path and a phase conductor for different power groups, the system combines multiple transmission functions into a unified three-conductor structure, reducing overall complexity while maintaining high transmission capacity
Data Source
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AI summary
A direct-current bus and a direct-current bus system, which relate to the technical field of power supply control. The direct-current bus comprises: a direct-current positive electrode conductor, a neutral line conductor, and a direct-current negative electrode conductor. The direct-current positive electrode conductor and the neutral line conductor are used for supplying power to a load, and/or the neutral line conductor and the direct-current negative electrode conductor are used for supplying power to a load. By means of the above content, the problem in the related art that the transmission power of a direct-current bus is lower due to two conductors being used by the direct-current bus is solved.