Journal
JOURNAL OF ELECTRONIC MATERIALS
Volume 41, Issue 6, Pages 1242-1246Publisher
SPRINGER
DOI: 10.1007/s11664-011-1884-6
Keywords
Maximum power point tracking (MPPT); analog MPPT controller; thermoelectric generator (TEG)
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Funding
- MKE, Korea [NIPA-2010-C1515-1001-0001]
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An analog maximum power point tracking (MPPT) circuit for a thermoelectric generator (TEG) is proposed. We show that the peak point of the voltage conversion gain of a boost DC-DC converter with an input voltage source having an internal resistor is the maximum power point of the TEG. The key characteristic of the proposed MPPT controller is that the duty ratio of the input clock pulse to the boost DC-DC converter shifts toward the maximum power point of the TEG by seeking the peak gain point of the boost DC-DC converters. The proposed MPPT technique provides a simple and useful analog MPPT solution, without employing digital microcontroller units.
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