Adjusted method to calculate an electric wheelchair power cycle: fuel cell implementation example
Adjusted method to calculate an electric wheelchair power cycle: fuel cell implementation example
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DOI：
10.1016/j.est.2019.01.027
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发表时间：
2019-06
影响因子：
9.4
通讯作者：
Dafne Zuleima Morgado Ramirez;L. Rasha;G. Barbareschi;Tatsuto Suzuki;Irving Caplan;Iain McKinnon;D. Brett;C. Holloway
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文献类型：
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作者：
Dafne Zuleima Morgado Ramirez;L. Rasha;G. Barbareschi;Tatsuto Suzuki;Irving Caplan;Iain McKinnon;D. Brett;C. Holloway
实现更轻、更小的电源需要估计不同驾驶条件下的电力需求，而这对于电动或电动轮椅等便携式辅助技术来说是不可行的。通过功率和行驶周期估算电力需求是汽车行业的常用方法，对于确定电源大小至关重要。本研究采用微行程方法确定模拟标准室外条件下的功率和驾驶循环。计算了五种不同任务（纵向斜坡、横向斜坡和平坦表面）的功耗和行驶距离。 “典型”轮椅旅程作为建议的代表性驾驶周期呈现。将功率循环的数值估计与实验结果进行比较。数值与实验平均值和最大功率之间的差异分别为 7.58% 和 1.07%。与横向斜坡和平坦表面相比，上升的纵向斜坡的平均功耗明显更高。提出了燃料电池的理论实现。动力总成采用160W燃料电池和470W电池，搭配27gH2金属氢化物罐，将电动轮椅深循环铅酸电池的原30公里续航里程提高到521公里。
The implementation of lighter and smaller power sources requires the estimation of power demand under different driving conditions, which are not available for portable assistive technology such as electric or power wheelchairs. Power demand estimated through power and driving cycles is a common methodology in the automotive industry and critical for sizing the power sources. This study determines power and driving cycles in simulated standard outdoor conditions adapting the microtrip methodology. Power consumption and distance travelled were calculated for five different tasks (longitudinal slopes, cross slopes and a flat surface). A “typical” wheelchair journey is presented as a suggested representative drive cycle. A numerical estimation of the power cycle is compared to the experimental results. The difference between numerical and experimental mean and maximum power is 7.58% and 1.07% respectively. Ascending longitudinal slopes were characterized by significantly higher mean power consumption compared to cross slopes and the flat surface. A theoretical fuel cell implementation is presented. The powertrain has a 160 W fuel cell and 470 W battery with a 27 gH2metal hydride canister that increases the 30 km original range of the deep-cycle lead acid batteries of the electric wheelchair to 521 km.