DC Power Distribution Converter for Mixed Voltage Ranges
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Solution Overview
Problem
The voltage range difference between direct-current power distribution systems using a floating charging scheme (wide voltage range) and those using a converter to maintain a constant output voltage (narrow voltage range) leads to voltage deviations when the storage battery is discharged, potentially causing load devices to stop or fail.
Innovation Solution
A connection direct-current power distribution system is implemented, featuring a switch and a converter between the two systems, allowing power from a storage battery with a wide voltage range to be supplied to a system with a narrow voltage range, with the converter adjusting the voltage to maintain compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a storage battery with wide voltage range is used in a system requiring narrow voltage range, then the storage battery can operate over a broader operating range, but the voltage may deviate from the required voltage range when discharged
Solution Approach 1:
A converter is introduced as an intermediary device between the first DC power distribution system (wide voltage range) and the second DC power distribution system (narrow voltage range). The converter adjusts the voltage from the first system to match the required voltage range of the second system, enabling compatibility while maintaining voltage stability. This mediator resolves the contradiction by transforming the electrical parameters to satisfy both systems' requirements.
Solution Approach 2:
The converter dynamically changes the voltage parameter to adapt the output from the first storage battery system to match the required voltage range of the second system. By adjusting the voltage parameter in real-time based on the operating conditions, the system maintains reliability while utilizing the broader voltage range capability of the first storage battery.
2Reliability
If a converter is added to maintain constant output voltage, then voltage stability is improved, but system complexity increases
Solution Approach 1:
The converter performs multiple functions: voltage adjustment, system isolation, and compatibility management. By consolidating these functions into a single device, the patent reduces overall system complexity compared to having separate voltage regulation and isolation components. The converter's multi-functionality justifies its addition by providing comprehensive voltage stability management.
3Device complexity
If direct connection between wide voltage range and narrow voltage range systems is made, then system complexity is reduced, but voltage deviation occurs causing load device failure
Solution Approach 1:
The converter serves as a necessary intermediary that prevents direct problematic connection between systems with different voltage ranges. It mediates the power transfer by adapting voltage levels, thereby maintaining load device operation reliability while enabling system integration. The converter's presence is justified by the critical function of preventing voltage deviation that would otherwise cause load device failure.
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 solution enables safe and effective use of power from a storage battery with a wide voltage range in a system with a narrow voltage range, preventing voltage deviations and ensuring stable operation of load devices.
Implementation Method 1
the converter configured to adjust a voltage of the power
Data Source
AI summary
A connection direct-current power distribution system including a first direct-current power distribution system having a first voltage range and a second direct-current power distribution system having a voltage range narrower than the first voltage range includes a switch and a converter between the first direct-current power distribution system and the second direct-current power distribution system, and the switch is caused to enter a connected state, and power from a first storage battery in the first direct-current power distribution system is supplied to the second direct-current power distribution system via the converter configured to adjust a voltage of the power.