DC Home Wiring with High-Low Voltage Bus Partitioning
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Solution Overview
Problem
The complexity and poor security of DC home wiring systems due to multiple DC voltages and power levels lead to issues with strong and weak electricity interference, for which existing technologies have not provided effective solutions.
Innovation Solution
A DC home power consumption system with a high-voltage DC bus and a low-voltage DC bus, connected through a home power supply that can be either a DC or non-DC grid, utilizing an energy router to manage power distribution based on appliance requirements, with voltage levels determined by area and usage, ensuring safety and reliability through high and low voltage partitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple DC voltages are used for different power levels in DC home systems, then the adaptability to different appliance power requirements is improved, but the wiring complexity increases and strong-weak electricity interference occurs
Solution Approach 1:
The DC home power system is segmented into multiple voltage levels (high-voltage DC bus for high-power appliances, low-voltage DC bus for low-power appliances). This segmentation allows each voltage level to be independently managed and wired, reducing overall wiring complexity while maintaining adaptability to different appliance power requirements.
Solution Approach 2:
Different voltage levels are assigned to different spatial locations and appliance types within the home. High-voltage DC is used in specific areas for high-power appliances, while low-voltage DC is used in other areas for low-power appliances. This local quality approach optimizes the electrical characteristics for each specific application area.
2Adaptability or versatility
If multiple DC voltages are used for different power levels, then the versatility for different appliances is improved, but the security and reliability of the system deteriorates due to strong and weak electricity interference
Solution Approach 1:
The system segments voltage levels into distinct high-voltage and low-voltage DC buses, isolating them to prevent interference. This segmentation ensures that strong electricity from high-power appliances does not interfere with weak electricity signals from low-power appliances, thereby improving security and reliability.
Solution Approach 2:
DC converters serve as intermediary devices between high-voltage and low-voltage DC buses. These converters provide galvanic isolation and controlled energy transfer, preventing direct interference between different voltage levels while enabling power conversion when needed.
3Adaptability or versatility
If DC home wiring uses multiple voltage levels without effective solutions, then the power distribution flexibility is improved, but the safety and reliability of the system deteriorates
Solution Approach 1:
The power distribution system is segmented into high-voltage and low-voltage DC zones with clear boundaries. This segmentation maintains flexibility in power distribution to different appliance types while ensuring safety through isolated voltage zones that prevent harmful interference and improve overall system reliability.
Data Source
AI summary
The present disclosure discloses a DC home power consumption system and a wiring method for home appliances based on the system. The system includes: a home power supply configured to supply power for the home power consumption system; a high-voltage DC bus connected to the home power supply and configured to supply power for a high-power appliance; a low-voltage DC bus connected to the home power supply or the high-voltage DC bus and configured to supply power for a low-power appliance.