Converter Control for Simultaneous Energy Sources in Eco-Friendly Vehicles
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Solution Overview
Problem
Conventional eco-friendly vehicles with both low-voltage DC-DC converters and renewable energy conversion converters face limitations where simultaneous operation results in diverted load current, preventing simultaneous use of output from both converters, thereby limiting fuel efficiency.
Innovation Solution
An apparatus and method for controlling converters in eco-friendly vehicles, which includes a controller that manages the output voltage of low-voltage conversion converters and output current of renewable energy conversion converters, utilizing stored database information to set target values and ensure simultaneous operation, allowing the vehicles to use power from both sources efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the LDC and the renewable energy conversion converter are operated simultaneously, then the fuel efficiency can be improved, but the load current is diverted to the converter having a large output voltage making it impossible to use both outputs simultaneously
Solution Approach 1:
The controller dynamically adjusts the output voltage of the LDC based on the operating state of the renewable energy conversion converter. By changing the voltage parameter of the LDC output, the system enables both converters to operate simultaneously without current diversion, allowing the vehicle to utilize both power sources for improved fuel efficiency
Solution Approach 2:
The controller monitors the output voltage of the renewable energy conversion converter and uses this feedback information to regulate the LDC output voltage. This closed-loop control ensures that both converters can operate in parallel without interference, maintaining stable current distribution and enabling simultaneous utilization of both power sources
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
This solution enables the simultaneous use of outputs from low-voltage and renewable energy conversion converters, enhancing fuel efficiency by optimizing the charging of auxiliary batteries and electric loads in eco-friendly vehicles.
Implementation Method 1
a renewable energy generator configured to generate power using renewable energy including solar light
Implementation Method 2
a low-voltage conversion converter configured to convert power supplied from the high-voltage battery into a low voltage to charge the auxiliary battery
Implementation Method 3
a renewable energy conversion converter configured to convert the power supplied from the renewable energy generator to charge the auxiliary battery or to drive the electric load
Data Source
AI summary
An apparatus for controlling a converter of an eco-friendly vehicle includes: a high-voltage battery; a low-voltage conversion converter configured to convert power supplied from the high-voltage battery into a low voltage to provide power to at least one of an auxiliary battery of the vehicle and an electric load thereof; a renewable energy generator configured to generate power using renewable energy including solar light; a renewable energy conversion converter configured to convert the power supplied from the renewable energy generator to provide power to the at least one of the auxiliary battery and the electric load; and a controller configured to control an output voltage value of the low-voltage conversion converter and an output current of the renewable energy conversion converter.