Thermoelectric Generator Voltage Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional thermoelectric generators do not maximize output power of DC to DC converters due to neglecting parasitic resistance effects, resulting in suboptimal energy conversion from heat to electric energy.
Innovation Solution
A thermoelectric generator design that includes a thermoelectric element and a DC to DC converter, where the input voltage is set higher than half the open voltage of the thermoelectric element, and the ON time of the switch control signal is optimized to reduce parasitic resistance losses, thereby increasing output power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the output voltage of the thermoelectric element is set at half the open voltage to maximize output power, then the theoretical power is optimized, but the parasitic resistance of the DC to DC converter causes actual output power to be suboptimal
Solution Approach 1:
The patent changes the operating voltage parameter from the conventional half-open-voltage setting to a higher voltage range (0.45-0.55 times open voltage or specifically above half open voltage). This parameter adjustment compensates for parasitic resistance losses by operating at a voltage that accounts for the converter's internal resistance, thereby maximizing actual output power despite the added complexity of voltage optimization
2Power
If the input voltage is increased above half the open voltage, then parasitic resistance losses are reduced and output power increases, but the deviation from the conventional optimal point reduces theoretical efficiency
Solution Approach 1:
The patent implements a control mechanism that monitors the actual output power and adjusts the operating voltage accordingly. By using feedback from the system's performance, the controller can dynamically optimize the input voltage to the DC to DC converter, ensuring operation at the true optimal point that accounts for parasitic resistances and maximizes energy conversion efficiency
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 design enhances the output power of the DC to DC converter by setting the input voltage and ON time within specific ranges, exceeding conventional power levels and maximizing energy conversion efficiency.
Implementation Method 1
a thermoelectric element (110) that converts heat energy into electric energy
Data Source
AI summary
According to an embodiment, a thermoelectric generator includes a thermoelectric element and a DC to DC converter. The thermoelectric element converts heat energy into electric energy. The DC to DC converter increases an input voltage applied by the thermoelectric element. The input voltage is higher than a voltage which is half an open voltage of the thermoelectric element.