scholarly journals Three Dimensional TCAD Simulation of a Thermoelectric Module Suitable for Use in a Thermoelectric Energy Harvesting System

10.5772/51404 ◽  
2012 ◽  
Author(s):  
Chris Gould ◽  
Noel Shammas
Keyword(s):  
Energy Harvesting ◽  
Three Dimensional ◽  
Thermoelectric Module ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting ◽  
Energy Harvesting System ◽  
Tcad Simulation

An Ultra Low Voltage Resonant Converter for Thermoelectric Energy Harvesting

2013 ◽  
Vol 772 ◽  
pp. 731-734
Author(s):  
Shi Zhong Guo ◽  
Kai Xie ◽  
Ying Hao Ye ◽  
Xiao Ping Li
Keyword(s):  
Energy Harvesting ◽  
Low Voltage ◽  
Power Converter ◽  
Resonant Converter ◽  
Transfer Energy ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting ◽  
Energy Transducer ◽  
Energy Harvesting System ◽  
Energy Buffer

This paper presents a ultra low voltage resonant converter for thermoelectric energy harvesting.A key challenge in designing energy harvesting system is that thermoelectric generators output a very low voltage (-0.3V~0.3V). Therefore, a power converter is used to boost the output voltage of the energy transducer and transfer energy into an energy buffer for storage. The converter operates from input voltages ranging from-500mV to-60mV and 60mV to 500mV while supplying a 4.2 V DC output. The converter consumes 88μW of quiescent power, delivers up to 1.6 (1.8) mW of output power, and is 65(67)% efficient for a-100mV and 100mV input, respectively.

scholarly journals Performance Evaluation of Thermoelectric Energy Harvesting System on Operating Rolling Stock

Micromachines ◽  
2018 ◽  
Vol 9 (7) ◽  
pp. 359 ◽  
Author(s):  
Dahoon Ahn ◽  
Kyungwho Choi
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
High Speed ◽  
Waste Heat ◽  
Rolling Stock ◽  
Maximum Speed ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting ◽  
Energy Harvesting System ◽  
Power Sensor

During rolling stock operation, various kinds of energy such as vibration, heat, and train-induced wind are dissipated. The amount of energy dissipation cannot be overlooked when a heavy railroad vehicle operates at high speed. Therefore, if the wasted energy is effectively harvested, it can be used to power components like low power sensor nodes. This study aims to review a method of collecting waste heat, caused by the axle bearing of bogie in a rolling stock. A thermoelectric module (TEM) was used to convert the temperature gradient between the surface of the axle bearing housing and the outdoor air into electric energy. In this study, the output performance by temperature difference in the TEM was lab-tested and maximized by computational fluid analysis of the cooling fins. The optimized thermoelectric energy harvesting system (TEHS) was designed and applied on a rolling stock to analyze the power-generating performance under operation. When the rolling stock was operated for approximately 57 min including an interval of maximum speed of 300 km/h, the maximum open circuit voltage was measured at approximately 0.4 V. Based on this study, the system is expected to be utilized as a self-powered independent monitoring system if applied to a low-power sensor node in the future.

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