Maximum power point tracking for thermoelectric generators with high frequency injection

Thermoelectric Generators (TEG) can harvest a part of the thermal energy otherwise lost in the exhaust gases of vehicles and are combined with Maximum Power Point Tracking (MPPT) schemes to maximize the power output. This paper proposes a novel TEG MPPT scheme named High Frequency Injection (HFI) method. The method injects a high frequency voltage to the TEG and yields a power with a high frequency component. This component is demodulated and yields a signal proportional to the distance from the optimal operation point. The duty cycle setpoint is adjusted with a proportional-integral (PI) controller. The method is compared to the Perturb & Observe method using a drive cycle. Both show good results in terms of dynamic tracking of the optimal operation point. However, the HFI method is shown to be significantly more robust against sensor noise.

[1]  Maussion Pascal,et al.  Modeling and tuning of MPPT controllers for a thermoelectric generator , 2014, 2014 First International Conference on Green Energy ICGE 2014.

[2]  Andrea Montecucco,et al.  Maximum Power Point Tracking Converter Based on the Open-Circuit Voltage Method for Thermoelectric Generators , 2015, IEEE Transactions on Power Electronics.

[3]  S. Buso,et al.  Analysis of MPPT algorithms for photovoltaic panels based on ripple correlation techniques in presence of parasitic components , 2009, 2009 Brazilian Power Electronics Conference.

[4]  K. T. Chau,et al.  Thermoelectric automotive waste heat energy recovery using maximum power point tracking , 2009 .

[5]  A. Montecucco,et al.  Simple, fast and accurate maximum power point tracking converter for thermoelectric generators , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[6]  Samir Kouro,et al.  Editorial Special Issue on Modular Multilevel Converters, 2015 , 2015 .

[7]  Shiho Kim,et al.  Achieving Maximum Power from Thermoelectric Generators with Maximum-Power-Point-Tracking Circuits Composed of a Boost-Cascaded-with-Buck Converter , 2015, Journal of Electronic Materials.

[8]  P. T. Krein,et al.  Ripple correlation control, with some applications , 1999, ISCAS'99. Proceedings of the 1999 IEEE International Symposium on Circuits and Systems VLSI (Cat. No.99CH36349).

[9]  Chee Wei Tan,et al.  A review of energy sources and energy management system in electric vehicles , 2013 .

[10]  H. Nagayoshi,et al.  Mismatch Power Loss Reduction on Thermoelectric Generator Systems Using Maximum Power Point Trackers , 2006, 2006 25th International Conference on Thermoelectrics.

[11]  Jih-Sheng Lai,et al.  Aggregated modeling and control of a boost-buck cascade converter for maximum power point tracking of a thermoelectric generator , 2008, 2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition.