System and method for intelligently controlling thermoelectric energy of reversible high-temperature SOFC

Abstract

The invention discloses a system and a method for intelligently controlling the thermoelectric energy of a reversible high-temperature SOFC (solid oxide fuel cell). The system comprises a fuel cell stack, a power supply system, an energy circulation system, a water supply system, a solar energy system, an oxidant circulation system and a control system; the power supply system supplies electric energy to the whole system, and the energy circulation system delivers a fuel to the fuel cell stack, generates electricity under the control of the control system, and controls the reversible processof the SOFC to realize the energy conversion of remaining electric energy; the water supply system supplies a water source to the system; the solar energy system is connected with the fuel cell stack;and the oxidant circulation system supplies an oxidant to the system. The method controls the working state and the output power of the SOFC mainly through a fuzzy control technology. The system andthe method realize SOFC and solar photovoltaic combined power generation, form the continuous, stable and reliable power supply system, and realizes the high-efficiency hydrogen production of the remaining electric energy through controlling the reversible process of the SOFC in order to achieve the purpose of new energy storage.

Description

technical field [0001] The invention relates to a control device and method, in particular to a reversible high-temperature SOFC thermoelectric energy intelligent control system and method. Background technique [0002] The fuel cell converts the chemical energy in the fuel into electrical energy. The conversion process is not limited by the Carnot cycle, and the conversion efficiency reaches more than 80%. Among them, the solid oxide fuel cell (SOFC) has a solid structure and does not require noble metal catalysts, and has attracted widespread attention. If the operating temperature of SOFC is generally high, the operating temperature of different electrolyte materials is also different. Generally, the operating temperature of high-temperature SOFC is 800-1000 ° C, and the operating temperature of medium-low temperature SOFC is generally 500-800 ° C. If the thermal energy is utilized to form combined heat and power supply, the comprehensive efficiency can reach more than 9...

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Problems solved by technology

[0004] Purpose of the invention: Aiming at the problems and deficiencies of high cost in the above-mentioned prior art, the present invention provides a reversible high-temperature SOFC thermoelectric energy intelligent control system and method that organically combines with solar energy to realize efficient conversion and storage of energy

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