Maximum power point tracking controller considering reverse temperature difference and control method

Abstract

The invention provides a maximum power point tracking controller considering reverse temperature difference and a control method, and belongs to the field of thermoelectric conversion and heat energy recovery. The maximum power point tracking controller comprises a power supply correction system, a hybrid intelligent maximum power point tracking module and a two-phase interleaved Boost conversion circuit, and the power supply correction system controls the voltage input to the two-phase interleaved Boost conversion circuit by a thermoelectric power generation system to be constantly forward by judging the positive and negative values of the output voltage of the thermoelectric power generation system; and when the thermoelectric power generation system generates reverse voltage, the maximum power point can still be accurately tracked. According to the maximum power point tracking control method, the Kalman filter and the fuzzy logic controller are combined, and the dynamic tracking speed and the steady-state precision of the maximum power point tracking controller are effectively improved. According to the invention, the problem of tracking failure of a traditional tracking power point caused by an automobile idling working condition can be overcome, and more efficient and more stable power output can be realized under the same automobile working condition.

Description

technical field [0001] The invention belongs to the fields of thermoelectric conversion and heat energy recovery, and in particular relates to an automobile exhaust maximum power point tracking controller and a control method considering reverse temperature difference. Background technique [0002] Energy is the demand of the modern world, but traditional energy is being consumed day by day. With the rising cost of traditional energy and the reduction of available sources, domestic and foreign countries have begun to focus on the utilization of renewable energy, which mainly includes new energy such as wind energy, solar energy, and thermal energy. Meet future energy needs. Among them, thermoelectric technology has also received extensive attention at home and abroad. Thermoelectric technology is a clean energy technology that uses the directional movement of carriers generated by semiconductors under the action of temperature differences to generate electricity. It is perma...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a maximum power point tracking controller and its control method considering the reverse temperature difference, which is used to overcome the failure of the traditional tracking power point tracking system caused by the idling condition of the vehicle. And improve the dynamic tracking speed and stability accuracy of the maximum power point under other working conditions, and at the same time improve the overall output efficiency of the thermoelectric power generation system, and achieve more efficient and stable power output under the same vehicle working conditions

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