Programmable Outdoor Power Supply Without DC-DC Conversion Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing outdoor electrical systems suffer from high power loss due to DC-DC conversion circuits, which incur conduction and switching losses during voltage and current transitions.
Innovation Solution
An outdoor electrical system utilizing a programmable power supply that bypasses DC-DC conversion circuits by directly outputting power when high power is required and adjusts power through a low power conversion module when lower power is needed, reducing the number of energy conversions and minimizing losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If DC-DC conversion circuits are used for power conversion, then voltage and current can be adjusted to meet varying power demands, but conduction losses and switching losses increase, resulting in high power loss
Solution Approach 1:
The patent extracts and removes the DC-DC conversion circuit from the power supply system. By using a programmable power supply that directly outputs adjustable voltage and current via USB PD protocol, the intermediate conversion stage is eliminated, thereby removing the source of conduction and switching losses while preserving the ability to adjust power parameters.
Solution Approach 2:
The patent introduces a programmable power supply as an intermediary device between the power source and the electrical appliance. This mediator communicates via USB PD protocol to negotiate and adjust voltage and current parameters dynamically, replacing the traditional DC-DC conversion approach and achieving low-loss power adaptation.
2Measurement precision
If multiple conversion stages are used to handle varying power demands, then precise power control can be achieved, but the number of energy conversions increases, leading to cumulative power loss
Solution Approach 1:
The patent segments the power control function into two parts: the programmable power supply handles high-power output and parameter adjustment, while a low power conversion module handles only the residual low-power conversion when needed. This segmentation reduces the total conversion stages compared to using full DC-DC conversion for all power levels.
Solution Approach 2:
The patent implements dynamic power management by switching between direct output mode (high power) and low power conversion mode (low power) based on real-time power demands. This dynamic approach ensures precise power control while minimizing conversion stages and cumulative losses at each operating condition.
Data Source
AI summary
The present invention discloses an outdoor electrical system and method based on a programmable power supply, pertaining to the field of outdoor electrical appliance, wherein the programmable power supply receives a data request signal from an outdoor electrical appliance, dynamically adjusts the output voltage based on the data request data, and then outputs it to the outdoor electrical appliance; when the output power of the outdoor electrical appliance is greater than a preset threshold, the power supply output is directly output to the electrical load through a set programming and protection detection module, and when the output power is less than the preset threshold, the power supply output is adjusted through a set low power conversion module before being output to the electrical load, which achieves that the energy conversion is completed in one step within the programmable power supply, without the need for a DC-DC conversion circuit in between, effectively reducing the number of energy conversions on the power consumption side, achieving the effect of reducing energy conversion loss, and enhancing the output conversion efficiency of the outdoor electrical system.