Vehicle Power Control Apparatus for Fuel Efficiency and Voltage Stability
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Solution Overview
Problem
Existing power control methods for vehicle electrical systems fail to minimize average power cost and stabilize bus voltage due to neglecting variations in power cost and response characteristics of power supply sources, leading to inefficient fuel consumption and voltage instability.
Innovation Solution
A power control apparatus that allocates power from multiple sources to minimize overall power cost by considering variations in power cost and response times, using energy converters and load control devices to adjust power generation and distribution, ensuring stable bus voltage and efficient fuel consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power supply proportions are adjusted based on average power cost, then fuel consumption improvement is achieved, but the average power cost of the entire electrical system is not minimized due to neglecting power cost variations with supply amount
Solution Approach 1:
The patent applies dynamics by transitioning from static average power cost calculation to dynamic power cost evaluation that accounts for variations in power cost with respect to supply amount. The system continuously monitors and adjusts power supply proportions based on real-time power cost variations, enabling adaptive optimization of fuel consumption and power cost for each power supply source.
Solution Approach 2:
The patent implements parameter changes by considering multiple variables including power cost variations with supply amount, response characteristics of power supply sources, and necessary consumption amount of power. These parameter changes enable the system to determine optimal power supply proportions that minimize both fuel consumption and overall power cost.
2Productivity
If power generation command is issued without considering response characteristics, then power supply adjustment is achieved, but excessive or deficient power generation occurs causing bus voltage instability
Solution Approach 1:
The patent applies preliminary action by calculating the necessary consumption amount of power in advance and determining optimal power supply proportions before issuing power generation commands. The system pre-adjusts power supply allocations based on predicted power requirements and response characteristics, preventing excessive or deficient power generation and maintaining bus voltage stability.
Solution Approach 2:
The patent implements feedback by continuously monitoring bus voltage, power supply source responses, and consumption patterns. The system uses this feedback information to adjust power supply proportions dynamically, ensuring that power generation matches actual consumption requirements and maintaining stable bus voltage operation.
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 solution effectively stabilizes bus voltage and improves fuel consumption by optimizing power allocation across multiple power sources, accounting for variations in power cost and response times, thereby reducing fuel consumption and preventing power failures or over-supply.
Implementation Method 1
a power supply source including an energy converter that converts energy supplied from an energy source to power and supplies the power to an electrical load
Data Source
AI summary
A power control apparatus acquires a maximum supply amount of power, transient maximum supply amount of power, and transient minimum supply amount of power of each power supply source. The apparatus further acquires a power cost of respective power supply sources, a load-required power and a charge request power. The apparatus acquires a combination of power supply sources that minimizes specific fuel consumption and determines an allocation amount of power. Taking transient response of respective power supply sources into account, the allocation amount of power of each power supply sources is corrected to be greater than a transient minimum supply power and smaller than a transient maximum supply power.