Fuel Cell Power Supply Phase Control for Efficiency
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Solution Overview
Problem
Existing power supply systems for motor-driven vehicles, particularly those using fuel cells, face inefficiencies in voltage conversion and energy management due to the limitations of current control methods, which affect the durability and performance of the fuel cell voltage control units.
Innovation Solution
A power supply system comprising a fuel cell, a converter, and a processor that generates control signals to manage the number of operating phases in the fuel cell voltage control unit, optimizing energy efficiency by adjusting the number of phases based on input current and voltage conditions to minimize losses and ensure balanced load distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the number of operating phases in the fuel cell voltage control unit is increased to improve voltage conversion efficiency, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies dynamics by making the number of operating phases variable rather than fixed. The control unit dynamically adjusts the number of phases based on real-time operating conditions such as input current and voltage levels. This allows the system to optimize energy efficiency across different operating points while avoiding the need for a permanently complex multi-phase configuration, thus resolving the contradiction between energy efficiency and device complexity.
2Use of energy by moving object
If the number of operating phases is dynamically adjusted to optimize energy efficiency, then energy efficiency is improved, but control complexity increases
Solution Approach 1:
The patent implements parameter changes by adjusting the number of operating phases based on measured electrical parameters such as input current and voltage levels. The control unit monitors these parameters and switches between different phase configurations (e.g., single-phase, two-phase, three-phase) to maintain optimal energy efficiency. This approach simplifies control compared to continuous adjustment methods while still achieving significant energy optimization across varying load conditions.
3Stability of the object's composition
If feedback control is used to maintain stable output voltage, then output stability is improved, but response time increases due to the control loop
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple operating phase modes and their corresponding control parameters. When a change in operating conditions is detected, the system can quickly switch between pre-established configurations rather than calculating optimal parameters in real-time. This reduces the response time of the feedback control loop while maintaining output stability, as the control strategies for different phase configurations are prepared in advance.
Data Source
AI summary
A power supply system includes a power supply, a converter, and a processor. The converter converts voltage of the electric power supplied from the power supply. The processor is configured to generate a first control signal to control the converter to output a target voltage or a target current via a feedback control based on the first control signal. The processor is configured to generate a second control signal to detect a state of the power supply. The processor is configured to combine the first control signal and the second control signal to control the converter.