Rectifier Voltage Control for Solar DC Power Supply Loads
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Solution Overview
Problem
The conversion of DC power generated by solar power systems to AC power results in significant loss due to the need for multiple power sources, including commercial power, storage batteries, and solar power generation, necessitating efficient control to maximize power output to load devices.
Innovation Solution
A DC power supply system with a rectifier that adjusts its voltage to optimize solar power generation based on load device consumption, using sensors and control units to maximize power output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If DC power is converted to AC power and then back to DC power, then the power can be used by AC devices, but conversion loss occurs
Solution Approach 1:
The patent extracts the AC conversion环节 from the power supply chain by introducing a dedicated AC power supply unit that outputs AC power directly to AC loads, bypassing the need for DC-to-AC conversion. This separates the AC power delivery path from the DC power distribution system, eliminating the conversion loss while maintaining the ability to power both AC and DC devices.
Solution Approach 2:
The patent introduces an AC power supply unit as an intermediary component between the DC power distribution system and AC loads. This intermediary converts DC to AC internally and provides stable AC power output, acting as a mediator that enables AC device operation without requiring other devices to undergo unnecessary DC-to-AC conversion cycles.
2Adaptability or versatility
If multiple power sources (commercial power, storage battery, solar power) are connected to a load, then power supply flexibility is improved, but control complexity increases
Solution Approach 1:
The patent segments the power management system into distinct functional modules: a power consumption acquisition unit for monitoring load demands, a output power acquisition unit for tracking available power from each source, and a voltage control unit for managing power distribution. This modular segmentation simplifies the control architecture by dividing the complex multi-source power management into manageable, independent functions that can operate autonomously.
Solution Approach 2:
The patent implements feedback mechanisms where the voltage control unit continuously monitors power consumption from the load device and adjusts the output voltage of the rectifier accordingly. The system acquires real-time data on power consumption and output power, then uses this feedback to optimize the operating voltage and maximize solar power generation while maintaining stable power supply to the load.
3Stability of the object's composition
If rectifier voltage is fixed, then system stability is maintained, but solar power generation efficiency is reduced
Solution Approach 1:
The patent transitions from a fixed rectifier voltage system to a dynamic voltage control system. The voltage control unit continuously adjusts the rectifier output voltage based on real-time feedback regarding power consumption and available solar power. This dynamic adjustment enables the system to track the maximum power point of the solar panels and adapt to changing load conditions, significantly improving solar power generation efficiency while maintaining overall system stability through controlled variability.
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
The system effectively maximizes solar power generation by dynamically adjusting rectifier voltage to match load demands, reducing conversion losses and enhancing power utilization.
Implementation Method 1
a solar power generation process of supplying electric power to the load device
Implementation Method 2
a rectifier connected to commercial power and configured to supply electric power to a load device
Data Source
AI summary
An objective is to provide a direct current (DC) power supply system capable of maximally generating electric power in a solar power generation process in consideration of an operation state of a load device serving as a power supply destination. In a rectifier (100), a traffic volume acquisition unit (102a) acquires an operation state (traffic volume) of a communication device (300), and a power calculation unit (102b) acquires power consumption of the communication device (300) corresponding to the traffic volume. Moreover, the power calculation unit (102b) acquires output power from the rectifier (100). A power comparison unit (102d) acquires electric power generated by a solar power generation device (200) on the basis of power consumption (W) of the communication device (300) and output power (P′) of the rectifier (100). A search operation voltage decision unit (102f) decides a rectifier voltage of the rectifier (100) using a sign of a search voltage (dv) decided by a sign inversion unit (102e) so that the electric power generated by the solar power generation device (200) is increased.