Multi-Port Power Supply Feedback Control for Conversion Efficiency
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Solution Overview
Problem
Existing AC-to-DC chargers with multiple output ports face challenges in achieving high conversion efficiency and compact size due to inefficient power management across multiple DC power sources.
Innovation Solution
A power supply system with an isolated converter and non-isolated converters that regulate DC power sources via feedback signals, adjusting an intermediate target value based on the maximum target output values to optimize power conversion efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple DC power sources are provided through separate converters, then multiple output ports can charge devices independently, but power conversion efficiency deteriorates due to lack of coordinated power management
Solution Approach 1:
The patent combines multiple DC power sources into a unified power management system where an isolated converter provides a common intermediate DC power source that is shared by multiple non-isolated converters. This merging allows coordinated power distribution through feedback signals, improving overall conversion efficiency while maintaining multiple output capabilities.
Solution Approach 2:
The patent implements feedback mechanisms where each non-isolated converter transmits feedback signals to the isolated converter regarding its output requirements. The isolated converter uses this feedback to dynamically adjust the intermediate DC power source, optimizing power conversion efficiency across all output ports based on actual load demands.
2Adaptability or versatility
If power supply components are increased to support multiple output ports, then charging capability is improved, but device size increases
Solution Approach 1:
The patent merges multiple power conversion functions into a compact integrated architecture where the isolated converter serves as a shared intermediate stage for multiple non-isolated converters. This consolidation reduces the total component count and device volume while maintaining the capability to charge multiple devices simultaneously through independent output ports.
3Stability of the object's composition
If fixed intermediate DC power source is used, then system stability is improved, but power conversion efficiency deteriorates when output requirements vary
Solution Approach 1:
The patent transforms the fixed intermediate DC power source into a dynamic system where the isolated converter continuously adjusts its output based on feedback signals from multiple non-isolated converters. This dynamic adjustment maintains system stability through coordinated control while optimizing power conversion efficiency by matching the intermediate power source to actual output requirements in real-time.
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
Improves overall power conversion efficiency by dynamically adjusting the intermediate target value to match the maximum target output values, enhancing performance across multiple DC power sources.
Implementation Method 1
an isolated converter, which converts an AC power source into an intermediate DC power source
Implementation Method 2
a first non-isolated converter, which converts the intermediate DC power source into a first DC power source
Implementation Method 3
The first non-isolated converter transmits a feedback signal to the isolated converter, where the feedback signal is in association with target output values
Data Source
AI summary
A power supply has multiple DC power sources converted from an AC power source. The power supply has an isolated converter converting the AC power source into an intermediate DC power source, and non-isolated converters converting the intermediate DC power source into the DC power sources, regulated at target output values respectively. A communication channel connects the isolated converter and one of the non-isolated converters, and transmits a feedback signal in association with the target output values. The isolated converter, in response to the feedback signal, regulates the intermediate DC power source at an intermediate target value related to the target output values.