CN107310400B - 用于燃料电池车辆的空气压缩机的控制方法和系统 - Google Patents
用于燃料电池车辆的空气压缩机的控制方法和系统 Download PDFInfo
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Abstract
本发明涉及一种用于燃料电池车辆的空气压缩机的控制方法和系统,其中,用于燃料电池车辆的空气压缩机的方法包括:利用燃料电池控制器来感测空气压缩机电机转速的变化信息;当空气压缩机电机转速降低时,通过燃料电池控制器来感测的高电压电池的充电状态(SOC);响应于确定SOC超过SOC的预定水平,使用电动或电子的分总成的电流消耗,导出来自空气压缩机的再生制动的可用电流;之后,基于来自再生制动的可用电流,利用空气压缩机控制器操作空气压缩机电机。
Description
技术领域
本发明涉及一种用于燃料电池车辆的空气压缩机控制方法和系统,更具体的,本发明涉及这样一种用于燃料电池车辆的空气压缩机控制方法和系统:其中,空气压缩机用于再生制动,借此产生的电流等于燃料电池车辆所使用的量,即使在高电压电池为高度充电状态的情况下。
背景技术
近期,已经趋向于对车辆使用替代性发动机来代替传统的内燃机,以减少由车辆的排放气体所带来的环境污染。例如,在燃料电池车辆中,利用电化学反应来持续性地生成电能,从而获得用于驱动车辆的电力。这种电化学反应例如为水的电解逆反应,通过将供应自燃料供应单元的氢和供应自空气供应单元的氧被供应至增湿器(humidifier)来进行该水的电解逆反应。
具体而言,产生的电能存储在电池中并且在需要时被供应至电机。近年来,为了高效地利用电能,车辆的一部分制动力被用于产生电力,并且利用产生的电力来为电池充电。换句话说,由车辆的驱动速度产生的一部分动能被用于驱动发电机。因此,将用于车辆再起动的动能存储并且同时产生电能。该类型的方法被称为再生制动。在再生制动期间,利用单独的发电机,通过电机的反向驱动来产生电能。因此,任何包括有电机的电动设备均可以用于再生制动。在上述的燃料电池车辆中,由于除了用于一般电动车辆的驱动电机,还提供有用于将空气供应至燃料电池堆的空气压缩机电机,因此可以利用空气压缩机电机来执行再生制动。
以上仅意在帮助理解本发明的背景,并不旨在本发明落入本领域技术人员公知的现有技术的范围内。
发明内容
因此,本发明提供了一种用于燃料电池车辆的空气压缩机控制方法和系统,其中,当空气压缩机电机的转速降低时,尽管高电压电池在高度充电状态,但是通过最大化地允许空气压缩机的再生制动,可以改善车辆的燃料效率。
根据本发明的一个方面,一种用于燃料电池车辆的空气压缩机的控制方法,可以包括:利用燃料电池控制器而感测空气压缩机电机转速的变化信息;当空气压缩机电机的转速降低时,利用燃料电池控制器而感测的高电压电池的充电状态(SOC);
响应于确定SOC超过SOC的预定水平,使用用于燃料电池车辆的电动或电子的分总成的电流消耗,通过燃料电池控制器而导出来自空气压缩机的再生制动的可用电流;基于来自再生制动的可用电流而利用空气压缩机控制器操作空气压缩机电机。
所述电动或电子的分总成可以包括:燃料电池堆冷却泵,其配置为循环燃料电池堆中的冷却水;驱动电机,其配置为驱动燃料电池车辆;以及直流-直流(DC/DC)转换器,其配置为将充电电压供应至辅助电池。可以使用如下等式而导出来自空气压缩机的再生制动的可用电流:
Ireg=2Vdc*Idc_e/(3λ*we)
其中,Ireg是来自空气压缩机的再生制动的可用电流,Vdc是燃料电池的输出直流(DC)端子的电压,Idc_e是电动或电子的分总成的电流消耗,λ是空气压缩机电机的交链磁通,以及we是空气压缩机的电动角速度。
可以使用如下等式而导出来自空气压缩机的再生制动的可用电流
Ireg=2Vdc*(Idc_p+Idc_m+Idc_c)/(3λ*we)
其中,Ireg是来自空气压缩机的再生制动的可用电流,Vdc是燃料电池的输出直流(DC)端子的电压,Idc_p是燃料电池堆冷却泵的电流消耗,Idc_m是驱动电机的电流消耗,Idc_c是DC/DC转换器的电流消耗,λ是空气压缩机电机的交链磁通,以及we是空气压缩机的电动角速度。
该方法可以进一步包括:在感测SOC之后,当SOC等于或小于SOC的预定水平时,利用燃料电池控制器导出由空气压缩机的再生制动产生的最大电流,作为来自空气压缩机的再生制动的可用电流;基于来自再生制动的可用电流,通过空气压缩机控制器而操作空气压缩机电机。
所述空气压缩机电机的操作可以包括:利用空气压缩机控制器,将来自再生制动的实际电流与来自再生制动的可用电流进行比较,该实际电流产生自空气压缩机电机转速的降低;当来自再生制动的实际电流等于或者大于来自再生制动的可用电流时,利用空气压缩机控制器,将来自再生制动的可用电流导出为空气压缩机的电流指令,或者,当来自再生制动的实际电流小于来自再生制动的可用电流时,利用空气压缩机控制器,将来自再生制动的实际电流导出为空气压缩机的电流指令;通过空气压缩机控制器而使用空气压缩机的电流指令来操作空气压缩机电机。
此外,使用空气压缩机的电流指令来操作空气压缩机电机可以包括:利用空气压缩机控制器,将空气压缩机的电流指令和空气压缩机的输出电流应用至电流控制器;利用空气压缩机控制器,将电流控制器的输出值应用至空间矢量脉宽调制,并且导出空气压缩机电机的脉宽调制信号;利用空气压缩机控制器,使用脉宽调制信号来操作空气压缩机电机。
一种用于燃料电池车辆的空气压缩机控制的系统,可以包括:燃料电池堆;高电压电池,其连接至燃料电池堆,对该高电压电池进行充电和放电;多个电动或电子的分总成,其安装于燃料电池车辆;辅助电池,其配置为向电动或电子的分总成提供电力;空气压缩机,其配置为向燃料电池堆提供空气;燃料电池控制器,其配置为,感测空气压缩机电机转速的变化信息;并且配置为,当空气压缩机电机转速降低时,感测的高电压电池的充电状态(SOC);以及配置为,响应于确定SOC超过SOC的预定水平,使用电动或电子的分总成的电流消耗,导出来自空气压缩机的再生制动的可用电流;以及空气压缩机控制器,其配置为基于来自再生制动的可用电流来操作空气压缩机电机。
所述电动或电子的分总成可以包括:燃料电池堆冷却泵,其配置为循环燃料电池堆中的冷却水;驱动电机,其配置为驱动燃料电池车辆;以及直流-直流(DC/DC)转换器,其配置为将充电电压供应至辅助电池。可以使用如下等式而导出来自空气压缩机的再生制动的可用电流:
Ireg=2Vdc*(Idc_p+Idc_m+Idc_c)/(3λ*we)
其中:Ireg是来自空气压缩机的再生制动的可用电流,Vdc是燃料电池的输出DC端子的电压,Idc_p是燃料电池堆冷却泵的电流消耗,Idc_m是驱动电机的电流消耗,Idc_c是DC/DC转换器的电流消耗,λ是空气压缩机电机的交链磁通,以及we是空气压缩机的电动角速度。
其中,所述空气压缩机控制器可以配置为:将来自再生制动的实际电流与来自再生制动的可用电流进行比较,该实际电流产生自空气压缩机电机转速的降低;所述空气压缩机控制器可以配置为:当来自再生制动的实际电流等于或者大于来自再生制动的可用电流时,将来自再生制动的可用电流导出为空气压缩机的电流指令,或者,所述空气压缩机控制器配置为:当来自再生制动的实际电流小于来自再生制动的可用电流时,将来自再生制动的实际电流导出为空气压缩机的电流指令;所述空气压缩机控制器可以配置为:使用空气压缩机的电流指令来操作空气压缩机电机。
根据本发明的用于燃料电池车辆的空气压缩机控制方法和系统,其具有如下优点:
首先,即使高电压电池处在高度充电状态,通过允许空气压缩机的再生制动,本发明也可以改善车辆的燃料效率。
其次,本发明通过以下方式可以提高车辆的寿命:在再生制动期间,在燃料电池的输出DC端子上,通过高电压电池的充电限制可以避免过电压。
附图说明
通过下文结合附图所呈现的详细描述将会更为清楚地理解本发明的以上和其它目的、特征以及其他优点,在这些附图中:
图1为示出了根据本发明的示例性实施方案的用于燃料电池车辆的空气压缩机控制方法的流程图;
图2为根据本发明的示例性实施方案的用于燃料电池车辆的空气压缩机控制系统的结构示意图。
具体实施方式
应当理解,此处所使用的术语“车辆”或“车辆的”或其它类似术语一般包括机动车辆,例如包括运动型多用途车辆(SUV)、大客车、卡车、各种商用车辆的乘用汽车,包括各种舟艇、船舶的船只,航空器等等,并且包括混合动力车辆、电动车辆、可插式混合动力电动车辆、氢动力车辆以及其它替代性燃料车辆(例如源于非石油的能源的燃料)。正如此处所提到的,混合动力车辆是具有两种或更多动力源的车辆,例如汽油动力和电力动力两者的车辆。
虽然示例性的实施方案描述为使用多个单元以执行示例性的过程,但是应当理解,示例性的过程也可以由一个或多个模块执行。此外,应当理解的是术语控制器指代的是包含有存储器和处理器的硬件设备。该存储器被配置成存储模块,并且处理器具体配置成执行所述模块以执行以下进一步描述的一个或多个过程。
本文所使用的术语仅用于描述具体实施方案的目的并且并不旨在限制本发明。正如本文所使用的,单数形式“一个(a)”和“该(the)”旨在也包括复数形式,除非上下文另有清楚的说明。还将理解当在本说明书中使用术语“包含”和/或“包括”时,指明存在所述特征、整体、步骤、操作、元件和/或组件,但是不排除存在或加入一种或多种其他的特征、整体、步骤、操作、元件、组件和/或其群体。正如本文所述的,术语“和/或”包括一种或多种相关列举项目的任何和所有组合。
下面将结合所附附图对本发明的示例性实施方案进行具体描述。贯穿于这些附图中,相同的引用符号将指代相同或相似的部件。
如图1所示,一种用于燃料电池车辆的空气压缩机控制方法可以包括:利用燃料电池控制器50来感测空气压缩机电机的转速的变化信息(S10);当空气压缩机电机的转速降低时,利用燃料电池控制器50来感测高电压电池20的充电状态(SOC)(S20);以及响应于确定高电压电池20的SOC超过SOC的预定水平,利用用于燃料电池车辆的电动或电子的分总成的电流消耗,通过燃料电池控制器50而导出来自空气压缩机40的再生制动的可用电流(S30)。
如上所述,本发明的目的在于提供一种用于燃料电池车辆的空气压缩机控制方法和系统,其中燃料效率通过这种方式可以得到改善:利用空气压缩机40的再生制动,整个燃料电池车辆的再生制动能量可以最大化。因此,可以首先确定是否可以进行空气压缩机40的再生制动。因此,如图1所示,在感测转速的变化信息的步骤S10中,可以通过燃料电池控制器50来感测空气压缩机电机的转速变化。
此后,经由感测转速的变化信息的步骤S10,由于利用空气压缩机电机的转速降低而产生的能量可以给高电压电池充电,因此可以认为再生制动可以进行。具体而言,通常情况下,可以利用由转速的降低而产生的能量来对高电压电池20进行充电。但是,当高电压电池20完成充电时,不再需要对高电压电池20进行充电,因此能量会引发燃料电池系统的过电压现象。此外,由于这种过电压,燃料电池系统会遭到损伤。因此,在本发明中,在利用空气压缩机40的再生制动产生能量之前,经由感测SOC的步骤S20,可以感测高电压电池20的SOC。
在本发明中,在感测SOC的步骤S20之后,感测的SOC可以与SOC的预定水平(例如,SOC的参考水平)进行比较。特别的,SOC的预定水平可以确定高电压电池20是否完全充电。通常而言,当SOC为大约80%或者更高时,可以认为高电压电池20已完全充电。因此,在本发明中,SOC的预定水平可以为大约80%。同时,基于高电压电池的类型和燃料电池系统中的设计需要,可以改变所述预定水平。
将会在下文中描述当SOC等于或小于SOC的预定水平的情况。如上所述,响应于确定高电压电池20的SOC超过SOC的预定水平,将会在下文中详细描述根据本发明的控制方法。具体的,在本发明中,可以执行以下的步骤S30:利用用于燃料电池车辆的电动或电子的分总成的电流消耗,通过燃料电池控制器50而导出来自空气压缩机40的再生制动的可用电流。换句话说,由于高电压电池已经完全充电,因此有必要限制电压量以防止如上所述的过电压。
在本发明中,由于可以将来自高电压电池20的电力供应至电动或电子的分总成,因此可以使用用于燃料电池车辆的电动或电子的分总成的电流消耗来导出来自再生制动的可用电流。因此,当空气压缩机40的再生制动允许产生的电流等于由电动或电子的分总成消耗的电流的量时,可以供应与高电压电池20消耗的电量相等的电量。因此,过电压将不会发生在燃料电池系统中。
更具体的,利用如下等式可以导出来自空气压缩机40的再生制动的可用电流:
Ireg=2Vdc*Idc_e/(3λ*we)
其中:Ireg是来自空气压缩机40的再生制动的可用电流,Vdc是燃料电池的输出DC端子的电压,Idc_e是用于燃料电池车辆的电动或电子的分总成的电流消耗,λ是空气压缩机电机的交链磁通,以及we是空气压缩机40的电动角速度。
利用下面的电机能量等式可以导出上述等式:
P=3*(ID*VD+IQ*VQ)/2
特别的,用于燃料电池车辆的电动或电子的分总成可以包括各种用于燃料电池车辆的电动或电子的分总成(sub-assembly)。通常而言,用于燃料电池车辆的电动或电子的分总成可以包括:燃料电池堆冷却泵32,其配置为在燃料电池堆10中循环冷却水;驱动电机36,其配置为驱动燃料电池车辆;以及DC/DC转换器34,其用于将充电电压供应至辅助电池70。进一步的,在电动或电子的分总成中,由于燃料电池堆冷却泵32、驱动电机36和DC/DC转换器34使用了大量的电流,因此利用如下等式可以导出来自再生制动的可用电流:
Ireg=2Vdc*(Idc_p+Idc_m+Idc_c)/(3λ*we)
其中:Ireg是来自空气压缩机40的再生制动的可用电流,Vdc是燃料电池的输出DC端子的电压,Idc_p是燃料电池堆冷却泵32的电流消耗,Idc_m是驱动电机36的电流消耗,Idc_c是DC/DC转换器34的电流消耗,λ是空气压缩机电机的交链磁通,以及we是空气压缩机40的电动角速度。
同时,如上所述,当高电压电池20的SOC等于或者小于SOC的预定水平时,由于高电压电池可以充电(例如,能够被充电),因此不需要导出来自再生制动的可用电流。因此,在本发明中,当高电压电池20的SOC等于或者小于SOC的预定水平时,可以导出由空气压缩机40的再生制动产生的最大电流,作为来自空气压缩机40的再生制动的可用电流。
无论高电压电池20的SOC是否超过SOC的预定水平,在执行了导出来自再生制动的可用电流的步骤S30之后,可以通过空气压缩机控制器60来执行以下的步骤S60:基于来自再生制动的可用电流而操作空气压缩机电机。更具体的,如图1所示,通过以下步骤可以执行操作空气压缩机电机的步骤S60:步骤S40,其通过利用空气压缩机控制器60而将来自再生制动的实际电流(由空气压缩机电机转速的降低而产生该实际电流)与来自再生制动的可用电流进行比较;步骤S50,其在来自再生制动的实际电流等于或者大于来自再生制动的可用电流时,利用空气压缩机控制器60而将来自再生制动的可用电流导出为空气压缩机40的电流指令,或者步骤S50,其在来自再生制动的实际电流小于来自再生制动的可用电流时,利用空气压缩机控制器60而将来自再生制动的实际电流导出为空气压缩机40的电流指令;以及通过空气压缩机控制器,使用空气压缩机的电流指令而操作空气压缩机电机。
另外,在上述的步骤S60中,经由步骤S30(导出来自再生制动的可用电流),通过将空气压缩机电机的再生制动实际产生的实际电流与导出的来自再生制动的可用电流进行比较,来自再生制动的实际电流可以不超过来自再生制动的可用电流。因此,不会由空气压缩机40的再生制动而发生燃料电池系统的过电压,并且空气压缩机40的再生制动可以最大化,从而改善了燃料电池车辆的燃料效率。
在操作空气压缩机电机的步骤S60中,使用由导出电流指令的步骤S50而导出的电流指令,利用空气压缩机控制器60可以操作空气压缩机电机。更具体的,通过由空气压缩机控制器来将空气压缩机40的电流指令和空气压缩机40的输出电流应用至电流控制器,可以操作空气压缩机电机;将电流控制器的输出值应用至空间矢量脉宽调制(SVPWM),并且利用空气压缩机控制器60而导出空气压缩机电机的脉宽调制(PWM)信号;以及使用脉宽调制信号而通过空气压缩机控制器60来操作空气压缩机电机。
此外,如图2所示,根据本发明的用于燃料电池车辆的空气压缩机控制系统可以包括:燃料电池堆10;高电压电池20,其连接至燃料电池堆10,对该高电压电池进行充电和放电;多个电动或电子的分总成,其安装于燃料电池车辆;辅助电池70,其配置为向电动或电子的分总成提供电力;空气压缩机40,其配置为向燃料电池堆10提供空气;燃料电池控制器50,其配置为感测或监测空气压缩机电机转速的变化信息,当空气压缩机电机转速降低时感测高电压电池20的充电状态(SOC),以及,响应于确定高电压电池20的SOC超过SOC的预定水平,使用电动或电子的分总成的电流消耗而导出来自空气压缩机40的再生制动的可用电流;以及空气压缩机控制器60,其配置为基于来自再生制动的可用电流而操作空气压缩机电机。特别的,如图2所示,这种电动或电子的分总成可以包括:燃料电池堆冷却泵,其配置为在燃料电池堆10中循环冷却水;驱动电机36,其配置为驱动燃料电池车辆;以及DC/DC转换器34,其配置为将充电电压供应至辅助电池70。
尽管出于说明的目的已公开了本发明的示例性的实施方案,但是本领域技术人员应当理解,各种修改、增加和删减是可能的,并不脱离所附权利要求中所公开的本发明的范围和精神。
Claims (10)
1.一种用于燃料电池车辆的空气压缩机的控制方法,其包括:
通过控制器而感测空气压缩机电机转速的变化信息;
当空气压缩机电机转速降低时,通过控制器而感测高电压电池的充电状态;
响应于确定充电状态超过充电状态的预定水平,使用用于燃料电池车辆的电动或电子的分总成的电流消耗,通过控制器而导出来自空气压缩机的再生制动的可用电流;
基于来自再生制动的可用电流而通过控制器操作空气压缩机电机;
其中,所述空气压缩机电机的操作包括:
通过控制器而将由空气压缩机电机转速的降低而产生的来自再生制动的实际电流与来自再生制动的可用电流进行比较;
当来自再生制动的实际电流等于或者大于来自再生制动的可用电流时,利用控制器而将来自再生制动的可用电流导出为空气压缩机的电流指令,或者,当来自再生制动的实际电流小于来自再生制动的可用电流时,利用控制器而将来自再生制动的实际电流导出为空气压缩机的电流指令;
通过空气压缩机的电流指令,利用控制器来操作空气压缩机电机。
2.根据权利要求1所述的用于燃料电池车辆的空气压缩机的控制方法,其中,所述电动或电子的分总成包括:
燃料电池堆冷却泵,其配置为循环燃料电池堆中的冷却水;
驱动电机,其配置为驱动燃料电池车辆;以及
直流-直流转换器,其配置为将充电电压供应至辅助电池。
3.根据权利要求1所述的用于燃料电池车辆的空气压缩机的控制方法,其中,使用如下等式而导出来自空气压缩机的再生制动的可用电流:
Ireg=2Vdc*Idc_e/(3λ*we)
其中,Ireg是来自空气压缩机的再生制动的可用电流,Vdc是燃料电池的输出直流端子的电压,Idc_e是电动或电子的分总成的电流消耗,λ是空气压缩机电机的交链磁通,以及we是空气压缩机的电动角速度。
4.根据权利要求1所述的用于燃料电池车辆的空气压缩机的控制方法,其中,使用如下等式而导出来自空气压缩机的再生制动的可用电流:
Ireg=2Vde*(Idc_p+Idc_m+Idc_c)/(3λ*wθ)
其中,Ireg是来自空气压缩机的再生制动的可用电流,Vdc是燃料电池的输出直流端子的电压,Idc_p是燃料电池堆冷却泵的电流消耗,Idc_m是驱动电机的电流消耗,Idc_c是直流-直流转换器的电流消耗,λ是空气压缩机电机的交链磁通,以及we是空气压缩机的电动角速度。
5.根据权利要求1所述的用于燃料电池车辆的空气压缩机的控制方法,在感测充电状态之后,进一步包括:
当充电状态等于或小于充电状态的预定水平时,利用控制器导出由空气压缩机的再生制动产生的最大电流,作为来自空气压缩机的再生制动的可用电流;
基于来自再生制动的可用电流而通过控制器操作空气压缩机电机。
6.根据权利要求1所述的用于燃料电池车辆的空气压缩机的控制方法,其中,使用空气压缩机的电流指令来操作空气压缩机电机包括:
通过控制器而将空气压缩机的电流指令和空气压缩机的输出电流应用至电流控制器;
通过控制器而将电流控制器的输出值应用至空间矢量脉宽调制,并且导出空气压缩机电机的脉宽调制信号;
通过控制器而使用脉宽调制信号来操作空气压缩机电机。
7.根据权利要求1所述的用于燃料电池车辆的空气压缩机的控制方法,其中,所述空气压缩机电机的控制包括:
通过控制器而将由空气压缩机电机转速的降低而产生的来自再生制动的实际电流与来自再生制动的可用电流进行比较;
当来自再生制动的实际电流等于或者大于来自再生制动的可用电流时,利用控制器而将来自再生制动的可用电流导出为空气压缩机的电流指令,或者,当来自再生制动的实际电流小于来自再生制动的可用电流时,利用控制器而将来自再生制动的实际电流导出为空气压缩机的电流指令;
通过控制器而使用空气压缩机的电流指令来操作空气压缩机电机。
8.一种用于燃料电池车辆的空气压缩机的控制系统,该系统包括:
燃料电池堆;
高电压电池,其连接至燃料电池堆,对该高电压电池进行充电和放电;
多个电动或电子的分总成,其安装于燃料电池车辆;
辅助电池,其配置为向电动或电子的分总成提供电力;
空气压缩机,其配置为向燃料电池堆提供空气;
燃料电池控制器,其配置为,感测空气压缩机电机转速的变化信息;当空气压缩机电机转速降低时,感测高电压电池的充电状态;并且,响应于确定充电状态超过充电状态的预定水平,使用电动或电子的分总成的电流消耗,导出来自空气压缩机的再生制动的可用电流;以及
空气压缩机控制器,其配置为基于来自再生制动的可用电流来操作空气压缩机电机;
其中,所述空气压缩机控制器配置为,将由空气压缩机电机转速的降低而产生的来自再生制动的实际电流与来自再生制动的可用电流进行比较;
所述空气压缩机控制器配置为,当来自再生制动的实际电流等于或者大于来自再生制动的可用电流时,将来自再生制动的可用电流导出为空气压缩机的电流指令,或者,所述空气压缩机控制器配置为,当来自再生制动的实际电流小于来自再生制动的可用电流时,将来自再生制动的实际电流导出为空气压缩机的电流指令;
所述空气压缩机控制器配置为,使用空气压缩机的电流指令来操作空气压缩机电机。
9.根据权利要求8所述的用于燃料电池车辆的空气压缩机的控制系统,其中,所述电动或电子的分总成包括:
燃料电池堆冷却泵,其配置为循环燃料电池堆中的冷却水;
驱动电机,其配置为驱动燃料电池车辆;以及
直流-直流转换器,其配置为将充电电压供应至辅助电池。
10.根据权利要求9所述的用于燃料电池车辆的空气压缩机的控制系统,其中,使用如下等式而导出来自空气压缩机的再生制动的可用电流:
Ireg=2Vdc*(Idc_p+Idc_m+Idc_c)/(3λ*we)
其中:Ireg是来自空气压缩机的再生制动的可用电流,Vdc是燃料电池的输出直流端子的电压,Idc_p是燃料电池堆冷却泵的电流消耗,Idc_m是驱动电机的电流消耗,Idc_c是直流-直流转换器的电流消耗,λ是空气压缩机电机的交链磁通,以及we是空气压缩机的电动角速度。
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