CN113650628A - 一种分散动力的智能旅游电动车组牵引辅助供电系统 - Google Patents
一种分散动力的智能旅游电动车组牵引辅助供电系统 Download PDFInfo
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Abstract
本发明涉及一种分散动力的智能高端旅游纯电动车组的牵引辅助供电系统,包括电池组,所述电池组通过包含智能控制单元PDU的高压箱将直流电能共用直流母线提供给若干组具备斩波制动功能和单轴隔离接触器的牵引逆变器及具备任意单相带满载能力的辅助逆变器,每组牵引逆变器及辅助逆变器设置在一节车厢上,所述牵引逆变器驱动控制电阻制动柜及永磁牵引电机,所述辅助逆变器上连接有三相及大功率单相负载。该系统采用分散动力提高了机车的爬坡和防滑防空转能力,采用智能高压箱控制VCU增加了行车安全性,提高了运行可靠性和智能性,辅助逆变器采用4H桥单相隔离逆变拓扑结构提高了单相满载能力,解决了三相不平衡问题。
Description
技术领域
本发明属于牵引、辅助供电系统技术领域,涉及一种分散动力的智能旅游电动车组牵引辅助供电系统。
背景技术
高端旅游电动车组是大型海岸线等景区多编组分散动力智能高端旅客运输低速动车组,具备较高的网络智能性、安全性、舒适性、可靠性等要求。现有技术中,第三轨受电单轴异步交流传动:牵引电机为异步电机,牵引逆变器采用通用变频器、辅助系统采用通用的三相逆变隔离电路,无法解决输出三相不平衡问题,无高压箱及绝缘检测系统,无智能网络控制系统,安全性较低并存在传动效率较低,无电阻制动功能制动闸瓦磨损严重,爬坡能力差缺点;24V蓄电池集中动力单轴直流电机传动:牵引电动机为直流电机,和异步交流电机相比存在碳刷磨损且易环火故障、制造、维护成本高,无辅助系统、无高压箱及绝缘检测系统,安全性较低,车速较低,续航里程少等缺点。
发明内容
本发明的目的在于克服上述现有技术的缺点,提出一种分散动力的智能高端旅游纯电动车组的牵引辅助供电系统,整车控制设备采用网络控制为主硬线冗余为辅控制,牵引设备采用多轴分散动力永磁牵引系统提高了机车的爬坡和防滑防空转能力,提高了牵引系统效率,实现节能、省电并增加了行车安全性;辅助逆变器DC/AC380V输出模块采用4H桥单相隔离逆变拓扑结构,可满足100%三相输出不平衡负载工况下的单相满载输出能力提高了辅助系统运行可靠性。
为了实现上述目的,本发明采用了如下技术方案:
一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,包括电池组,所述电池组通过智能高压箱将直流电能共用直流母线提供给牵引逆变器及辅助逆变器,每组牵引逆变器及辅助逆变器设置在一节车厢上,所述牵引逆变器驱动控制永磁牵引电机及电阻制动柜,所述辅助逆变器上连接有负载。
进一步地,所述智能高压箱上连接有检测装置、绝缘检测仪、安全检修手动隔离装置、直流接触器、检测装置和智能控制单元PDU。
进一步地,所述牵引逆变器内依次连接有斩波制动单元、第一牵引逆变器单元和第二牵引逆变器单元,所述第一牵引逆变器单元和第二牵引逆变器单元输出端连接有隔离接触器。
进一步地,所述第一牵引逆变器单元连接有牵引控制单元TCU1,所述第二牵引逆变器单元连接有牵引控制单元TCU2,所述牵引控制单元TCU1和TCU2依次连接有逻辑控制单元VCU。
进一步地,所述牵引逆变器采用液冷和风冷混合冷却的方式,所述第一牵引逆变器单元和第二牵引逆变器单元采用液冷结构,所述斩波制动单元采用风冷结构,输入电压范围为DC470~1000V,额定功率2×50KW。
进一步地,所述牵引逆变器上输出0~380V、0~50Hz的三相交流电压,用来驱动永磁牵引电机正转、反转或制动,辅助逆变器输出380v、60Hz三相交流电压。
进一步地,所述电阻制动柜采用强迫风冷结构,其内部装有4组制动电阻带单元和冷却风机,所述电阻制动柜的额定总功率30KW,额定电压DC1000V,所述冷却风机采用220V、60HZ定频供电。
进一步地,所述永磁牵引电机采用液冷结构,和牵引逆变器共用液冷系统,其额定功率为4×30KW,额定电压为AC380V,其根据牵引、电制工况工作在电动和发电两种模式。
进一步地,所述辅助逆变器的输入端采用软起装置进行控制,所述软起装置包括预充电软开关,所述预充电软开关与DC/DC逆变器连接,所述DC/DC逆变器分别与DC/AC逆变器及24V输出模块连接,所述DC/AC逆变器与漏电互感器连接,所述漏电流互感器上连接有漏电流保护继电器。
进一步地,所述辅助逆变器包含辅助逆变器DC/AC逆变模块,所述辅助逆变器DC/AC逆变模块采用4H桥单相隔离逆变拓扑结构,辅助逆变器DC/AC380v逆变模块中每组单相逆变H桥臂和三组单相变压器T中的每组单相变压器分别连接,形成由三个单相逆变器和单相变压器组成的三相单绕组变压器逆变电路,变压器次级共负形成N线,构成三相四线制电源。
与现有技术相比,本发明具有以下有益效果:
该系统采用分散动力提高了机车牵引故障冗余能力、爬坡和防滑防空转能力,高压箱采用网络智能控制装置PDU和MSD隔离检修开关增加了行车安全性,牵引逆变器采用TCU+VCU网络控制方式实现网络控制和硬线控制共存冗余方式,提高了运行可靠性和智能性,辅助逆变器采用4H桥单相隔离逆变拓扑结构提高了单相满载能力,解决了三相不平衡问题。
本发明中,通过以下参照附图对本发明的示例性实施例的详细描述,本发明的其它特征及其优点将会变得清楚。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分,与说明书一起用于解释本发明的原理。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,对于本领域普通技术人员而言,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例牵引辅助供电系统框图;
图2为本发明实施例电传动系统原理图;
图3为本发明实施例高压箱电气原理图;
图4为本发明实施例牵引逆变器电气原理图;
图5为本发明实施例牵引逆变柜内部网络控制原理图;
图6为本发明实施例辅助逆变器电气原理图;
图7为本发明实例辅助逆变器380v逆变模块4H桥单相隔离逆变电路原理图。
具体实施方式
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反,它们仅是与所附权利要求书中所详述的、本发明的一些方面相一致的装置的例子。
为了使本领域的技术人员更好地理解本发明的技术方案,下面结合附图及实施例对本发明作进一步详细描述。
如图1,2所示,一种分散动力的智能高端旅游纯电动车组的牵引辅助供电系统,包括电池组,电池组通过包含PDU智能控制单元的高压箱将直流电能共用直流母线提供给若干组具备斩波制动功能和单轴隔离接触器的牵引逆变器及具备任意单相带满载能力的辅助逆变器,每组牵引逆变器及辅助逆变器设置在一节车厢上,所述牵引逆变器驱动控制电阻制动柜及永磁牵引电机,所述辅助逆变器上连接有三相及大功率单相负载。
进一步地,所述高压箱上连接有用于网络通讯控制和智能控制装置PDU和过压、过流保护的检测装置和保证用电安全的绝缘检测仪以及安全检修手动隔离装置MSD和控制用K1-K5Z直流接触器。如图3所示,所述高压箱的输入电压为DC380~750v,并且具备外部充电功能,和牵引供电实现电气互锁。
进一步地,如图4所示,所述牵引逆变器内依次连接有斩波制动单元、第一牵引逆变器单元和第二牵引逆变器单元,所述第一牵引逆变器单元和第二牵引逆变器单元输出端连接有隔离接触器。牵引功率模块采用液冷结构斩波制动模块采用风冷结构,输入电压范围为DC470~1000V,额定功率2×50KW。牵引逆变器采用液冷和风冷混合冷却的方式,输入电压为DC600V,功率2×50KW。牵引逆变器上输出0~380V、0~50Hz的三相电流和交流电压,用来驱动永磁牵引电机正转、反转或制动,永磁牵引电机具备高效、绿色、节能效果。辅助逆变器输出380v、60Hz三相交流电压,并且具备任意单相满载输出能力。
进一步地,如图5所示,牵引逆变柜中依次设置有第一牵引逆变器单元和第二牵引逆变器单元,所述第一牵引逆变器单元连接有牵引控制单元TCU1,所述第二牵引逆变器单元连接有牵引控制单元TCU2,所述牵引控制单元TCU1和TCU2依次连接有逻辑控制单元VCU。
进一步地,电阻制动柜采用强迫风冷结构,其内部装有4组制动电阻带单元和冷却风机,所述电阻制动柜的额定总功率30KW,额定电压DC1000V,所述冷却风机采用220V、60HZ定频供电。
进一步地,所述永磁牵引电机采用液冷结构,其额定功率为4×30KW,额定电压为AC380V,其根据牵引、电制工况工作在电动和发电两种模式。
进一步地,如图6所示,辅助逆变器的输入端采用软起装置进行控制,预充电软开关与DC/DC逆变器连接,所述DC/DC逆变器分别与DC/AC逆变器及24V输出模块连接,所述DC/AC逆变器与漏电互感器连接,所述漏电流互感器上连接有漏电流继电器。
进一步地,辅助逆变器包含辅助逆变器DC/AC逆变模块,所述辅助逆变器DC/AC380v逆变模块N1/N2采用4H桥单相隔离逆变拓扑结构,N1/N2中每组单相逆变H桥臂和三组单相变压器T中的每组单相变压器分别连接,形成由三个单相逆变器和单相变压器组成的三相单绕组变压器逆变电路,变压器次级共负形成N线,构成了三相四线制电源,具备任意单相满载带载能力。
如图1-7所示,对于两编组的旅游电动车而言,采用DC650V/560AH的胶体聚合物磷酸铁锂电动力电池组,体积小且续航里程大,可载客200人,续航里程300KM。动力包电池通过高压箱将DC470~750V直流电能共用母线供给2个辅助逆变器和2个牵引逆变器,牵引逆变器将直流电压转换为0~380V、0~60Hz的调频调压三相交流电压,分别供给4台永磁牵引电机,从而完成牵引控制。牵引逆变器控制牵引永磁牵引电机,牵引逆变器控制永磁牵引电机输出电压和转矩,制动产生的能量通过高压箱馈回直流母线,永磁牵引电机转换为发电机工作模式,分别给动力电池及辅助逆变器供电,当系统的直流母线电压大于斩波门槛电压时,制动斩波器开通,将母线多余能量通过电阻制动柜泄放。
每个牵引逆变器的输入、输出端均设置有隔离接触器,实现了故障工况下永磁牵引电机与牵引逆变器以及直流母线的隔离,并可实现四分之一故障电机的隔离。两台辅助逆变器和两台牵引逆变器共用直流母线,辅助逆变器通过软起装置和DC/DC稳压变换器、一台24V电源、一台24vDC/DC充电机、一台380vDC/AC逆变器给车辆供电;其中,380vDC/AC逆变器采用4H桥单相隔离高频SICMOS控制技术,100%单相负载能力。
以上所述仅是本发明的具体实施方式,使本领域技术人员能够理解或实现本发明。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。
应当理解的是,本发明并不局限于上述已经描述的内容,并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。
Claims (10)
1.一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,包括电池组,所述电池组通过智能高压箱将直流电能共用直流母线提供给若干牵引逆变器及辅助逆变器,每组牵引逆变器及辅助逆变器设置在一节车厢上,所述牵引逆变器驱动控制永磁牵引电机及电阻制动柜,所述辅助逆变器上连接有负载。
2.根据权利要求1所述的一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,所述智能高压箱上连接有检测装置、绝缘检测仪、安全检修手动隔离装置、直流接触器、检测装置和智能控制单元PDU。
3.根据权利要求1所述的一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,所述牵引逆变器内依次连接有斩波制动单元、第一牵引逆变器单元和第二牵引逆变器单元,所述第一牵引逆变器单元和第二牵引逆变器单元输出端连接有隔离接触器。
4.根据权利要求3所述的一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,所述第一牵引逆变器单元连接有牵引控制单元TCU1,所述第二牵引逆变器单元连接有牵引控制单元TCU2,所述牵引控制单元TCU1和TCU2依次连接有逻辑控制单元VCU。
5.根据权利要求3所述的一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,所述牵引逆变器采用液冷和风冷混合冷却的方式,所述第一牵引逆变器单元和第二牵引逆变器单元采用液冷结构,所述斩波制动单元采用风冷结构,输入电压范围为DC470~1000V,额定功率2×50KW。
6.根据权利要求1所述的一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,所述牵引逆变器上输出0~380V、0~50Hz的三相交流电压,用来驱动永磁牵引电机正转、反转或制动,辅助逆变器输出380v、60Hz三相交流电压。
7.根据权利要求1所述的一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,所述电阻制动柜采用强迫风冷结构,其内部装有4组制动电阻带单元和冷却风机,所述电阻制动柜的额定总功率30KW,额定电压DC1000V,所述冷却风机采用220V、60HZ定频供电。
8.根据权利要求1所述的一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,所述永磁牵引电机采用液冷结构,和牵引逆变器共用液冷系统,其额定功率为4×30KW,额定电压为AC380V,其根据牵引、电制工况工作在电动和发电两种模式。
9.根据权利要求1所述的一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,所述辅助逆变器的输入端采用软起装置进行控制,所述软起装置包括预充电软开关,所述预充电软开关与DC/DC逆变器连接,所述DC/DC逆变器分别与DC/AC逆变器及24V输出模块连接,所述DC/AC逆变器与漏电互感器连接,所述漏电流互感器上连接有漏电流保护继电器。
10.根据权利要求1所述的一种分散动力的智能旅游电动车组牵引辅助供电系统,其特征在于,所述辅助逆变器包含辅助逆变器DC/AC逆变模块,所述辅助逆变器DC/AC逆变模块采用4H桥单相隔离逆变拓扑结构,辅助逆变器DC/AC380v逆变模块中每组单相逆变H桥臂和三组单相变压器T中的每组单相变压器分别连接,形成由三个单相逆变器和单相变压器组成的三相单绕组变压器逆变电路,变压器次级共负形成N线,构成三相四线制电源。
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