The invention relates to a fuel cell cathode air pressurization method for an unmanned aerial vehicle and application. The method comprises the following steps: calculating unmanned aerial vehicle operation environment parameters according to the flight height of the unmanned aerial vehicle and a standard atmosphere model; constructing a characteristic equation according to the operation mechanism of the air compressor, and calculating the operation characteristics of the air compressor under the current environment parameters; according to the fuel cell characteristic equation, fuel cell output characteristics and a polarization curve under all working condition requirements are calculated; calculating an optimal supercharging curve according to the influence of the output characteristics of the air compressor and the corresponding power demand on the efficiency and net power of the fuel cell power system; inquiring the current optimal supercharging ratio of the system according to the optimal supercharging curve; and the optimal pressurization value is output to a controller of the air supply system, and the operation state of the air compressor is adjusted. According to the invention, surge is avoided, the reliable operation of the system is improved, and the optimal matching effect of the fuel cell stack and the air pressurization system is finally realized.
本发明涉及一种无人机用燃料电池阴极空气增压方法及应用,根据无人机的飞行高度,依据标准大气模型计算无人机运行环境参数;依据空压机运行机理构建特性方程,计算当前环境参数下的空压机运行特性;依据燃料电池特性方程,计算全工况需求下的燃料电池输出特性与极化曲线;根据空压机输出特性与相应功率需求对燃料电池动力系统的效率与净功率影响计算最优增压曲线;根据最优增压曲线查询系统当前的最优增压比;输出最优增压值至空气供应系统的控制器,调节空压机的运行状态。本发明避免发生喘振并提升系统可靠运行性,最终实现燃料电池电堆与空气增压系统最佳的匹配效果。
Fuel cell cathode air pressurization method for unmanned aerial vehicle and application
一种无人机用燃料电池阴极空气增压方法及应用
2023-08-29
Patent
Electronic Resource
Chinese
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