CN103660952B - 电动公共汽车辅助逆变器的过电流损坏防止方法和装置 - Google Patents

电动公共汽车辅助逆变器的过电流损坏防止方法和装置 Download PDF

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CN103660952B
CN103660952B CN201210596273.8A CN201210596273A CN103660952B CN 103660952 B CN103660952 B CN 103660952B CN 201210596273 A CN201210596273 A CN 201210596273A CN 103660952 B CN103660952 B CN 103660952B
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power steering
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steering motor
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inverter
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CN103660952A (zh
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韩京洙
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Hyundai Motor Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/046—Controlling the motor
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    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/062—Details, component parts
    • B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
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    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
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    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/24—Steering angle
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    • B60—VEHICLES IN GENERAL
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    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/34—Cabin temperature
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    • B60L2240/00—Control parameters of input or output; Target parameters
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    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
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    • B60L2240/529—Current
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    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
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Abstract

本发明提供了一种电动公共汽车辅助逆变器的过电流损坏防止方法和装置。所述方法包括：通过传感器感测空气罐中的压力以及空气压力开关是否处于接通位置；当空气罐中的压力低于设定值、或者当空气压力开关处于接通时，由逆变器通过控制施加到动力转向电动机的电压来降低动力转向电动机的速度；以及响应于降低动力转向电动机的速度，由逆变器将离合器保持在接合位置以将动力转向电动机的动力传递给空气压缩机。

Description

电动公共汽车辅助逆变器的过电流损坏防止方法和装置
技术领域
本发明涉及用于电动公共汽车的辅助逆变器的过电流损坏防止方法和装置，其在空气压缩机的离合器被连接到电动公共汽车的辅助逆变器上时可以防止电动公共汽车的辅助逆变器内过电流的产生。
背景技术
近来维护绿色环境的重要性正在提高，因而使用天然气(例如，除基于石油的燃料以外的燃料)的低地板公共汽车正在城市中运行。许多汽车制造商已经开发了电动公共汽车作为下一代运输工具。
一系列电池组可以安装在电动公共汽车的车身中以便通过接收从电池组供给的电力的电动机驱动主动轮、以及以便驱动各种类型的辅助机器装置(如转向装置和冷却装置)。
图1是示出根据现有技术的电动公共汽车的电力网配置的示例性示意图。图2是示出根据现有技术的电动公共汽车的辅助逆变器的配置的示例性配置图。
电动公共汽车的高压电池1的电压可以通过高压接线盒2施加于230V DC/AC辅助机器逆变器3，并且辅助机器逆变器3可以将从电池1施加的380V的DC电压转换成230V的AC电压。辅助机器(如空气压缩机和动力转向泵4和水泵5)可以通过从辅助机器逆变器3接收转换出的AC电压而被驱动。
在这种情况下，在电动公共汽车开始移动之后，动力转向电动机6可以以高速转动，空气压缩机8可以通过传动带连接到动力转向电动机6，并且离合器7可以安装到空气压缩机8上。当离合器7被接合时，可以通过从传动带接收动力来操作空气压缩机。
现在将描述空气压缩机8的操作条件。当空气罐中的压力低于设定值(例如，8Bar)时，储存在空气罐中的气体可以在空气压缩机8的操作下被压缩。此外，当空气罐中的压力高于设定值时，可以停止空气压缩机8的操作。
然而，当动力转向电动机6以高速转动时，空气压缩机8可能会在离合器7接合的同时运转。在这种情况下，可能会由于负载的突然出现而产生浪涌电流，因此，向辅助机器施加电力的逆变器3可能会被损坏。
上述信息只是为了增强对本发明的背景的理解，并且因此可能包含不构成本领域普通技术人员已知的现有技术的信息。
发明中容
本发明是致力于解决与现有技术相关的上述问题而做出的。因此，本发明提供了一种用于电动公共汽车的辅助逆变器的过电流损坏防止方法和装置，其可以通过在离合器被连接到动力转向电动机上之前降低动力转向电动机的速度来减少当离合器被连接到动力转向电动机上时由于负载的突然出现而产生的浪涌电流。
在一个实施例中，本发明提供了一种过电流损坏防止方法，其包括：通过压力传感器感测空气罐中的压力、并感测空气压力开关是否处于接通；当空气罐中的压力低于设定值、或者当空气压力开关处于接通时，通过控制动力转向电动机的速度来降低动力转向电动机的速度；以及在动力转向电动机的速度被降低之后保持离合器的接合位置以将动力转向电动机的动力传递到空气压缩机，从而防止由于浪涌电流的突然产生而损坏辅助逆变器。
在另一实施例中，本发明提供了一种过电流损坏防止装置，其包括：压力传感器和空气压力开关，其被配置成检测空气罐中的压力；以及逆变器，其包括控制器，该控制器被配置成从压力传感器和空气压力开关接收信号，以便当空气罐中的压力低于设定值、或者空气压力开关处于接通时通过控制施加到动力转向电动机的电压来控制动力转向电动机的速度。
有利地，根据本发明的上述示例性实施例，当空气罐中的压力低于设定值、或者空气压力开关处于接通时，可以在空气压缩机运转之前降低动力转向电动机的速度，以防止辅助逆变器由于浪涌电流的产生而被损坏，从而保证部件的可靠性。此外，由于传统上当辅助逆变器被损坏时更换辅助逆变器的成本非常昂贵，所以本发明减少了与更换相关的成本。最后，本发明使得可以预先防止当驾驶期间辅助逆变器被损坏时由于动力转向电动机和空气压缩机的不运转引起车辆转向和制动失去控制所导致的事故。
附图说明
根据结合附图给出的以下详细说明，本发明的上述及其它特征、目的和优点将会更清楚地得到理解，其中附图将在下文中仅通过例证的方式给出，并且因此并非对本发明进行限制，其中：
图1是示出根据现有技术的电动公共汽车的电力网配置的示例性示意图；
图2是示出根据现有技术的电动公共汽车的辅助逆变器的配置的示例性配置图；
图3是示出根据本发明示例性实施例的用于电动公共汽车的辅助逆变器的过电流损坏防止装置的配置的示例性示意图；
图4是根据本发明示例性实施例的图3的示例性电路配置图；
图5是示出根据本发明示例性实施例的用于电动公共汽车的辅助逆变器的过电流损坏防止方法的示例性流程图；并且
图6示出根据比较以下两种情况下是否产生浪涌电流的实验而获得的示例性结果：在空气压缩机的操作条件下在离合器被连接到空气压缩机之前未控制动力转向电动机的速度的情况；以及根据本发明的示例性实施例，在离合器被连接到空气压缩机之前通过控制动力转向电动机的速度来减小动力转向电动机的速度的情况；
应理解的是，附图不一定要依比例，而是呈现出说明本发明的基本原理的各种示例性特征的稍微简化的表示。本文中公开的本发明的特定设计特征，包括例如特定尺寸、方向、位置和形状，将部分地由期望的特定应用和使用环境来确定。
在附图中，附图标记在附图的几幅图中始终指代本发明的相同或等效部分。
具体实施方式
应理解的是，本文中使用的术语“车辆”或“车辆的”或其它类似术语包括一般的机动车辆(诸如包括运动型多功能车(SUV)、公共汽车、卡车、各种商用车辆在内的客车)、包括各种艇和船在内的水运工具、飞行器等，并且包括混合动力车、电动车、插电式混合电动车、氢动力车以及其它代用燃料车(例如从除石油以外的资源中取得的燃料)。
此外，本发明的控制逻辑可以实施为包含由处理器、控制器等执行的可执行程序指令的非暂时性计算机可读介质。计算机可读介质的实例包括但不限于ROM、RAM、压缩盘(CD)-ROM、磁带、软盘、闪存驱动器、智能卡和光学数据存储装置。计算机可读记录介质也可以分布在网络连接的计算机系统中，使得计算机可读介质以分布式方式(例如通过远程信息处理服务器或控制器局域网(CAN))被存储和执行。
本文中所用的术语仅用于描述特定实施例的目的，并且并非旨在对本发明进行限制。如本文中所使用的那样，单数形式的“一”旨在也包括复数形式，除非文中清楚地指出。还应理解的是，术语“包括”在本说明书中被使用时，指的是所陈述的特征、整数、步骤、操作、元件和/或组件的存在，而并不排除一个或多个其他特征、整数、步骤、操作、元件、组件和/或其组合的存在或附加。如本文中使用的那样，术语“和/或”包括一个或多个相关列出条目的任何和全部组合。
现在将在下文中详细参考本发明的各种实施例，其实例在附图中图解并在下面说明。尽管将结合示例性实施例说明本发明，但是应理解的是，本说明并非意在将本发明限于那些示例性实施例。相反，本发明意在不仅覆盖示例性实施例，而且覆盖可包括在如所附权利要求限定的本发明的精神和范围之内的各种替代形式、改型、等效形式和其它实施例。
图3是示出根据本发明示例性实施例的用于电动公共汽车的辅助逆变器的过电流损坏防止装置的配置的示例性示意图。图4是图3的示例性电路配置图。图5是示出根据本发明示例性实施例的用于电动公共汽车的辅助逆变器的过电流损坏防止方法的示例性流程图。
本发明提供了一种用于电动公共汽车的辅助逆变器12的过电流损坏防止方法和装置，其可以防止当空气压缩机的离合器被连接到辅助逆变器12时由于负载的突然出现所引起的过电流而损坏辅助逆变器12。
为了防止辅助逆变器12由于过电流而被损坏，本发明的过电流损坏防止装置可以包括：用于感测空气罐中的压力的压力传感器10，当空气罐中的压力降低到小于预定压力时工作的空气压力开关11，以及逆变器12，其包括用于控制动力转向电动机15的速度的控制器。压力传感器10和空气压力开关11可以连接到逆变器12，并且继电器13可以连接到逆变器12、电池和空气压缩机的离合器。当空气压力开关11工作时，继电器13可以接合空气压缩机的离合器。
逆变器12可以将电池的DC电压转换成电池的AC电压，并且当特定条件得到满足时可以通过在空气压缩机的离合器被连接到动力转向电动机15上之前降低施加到动力转向电动机15上的电压来降低动力转向电动机15的速度。
根据本发明示例性实施例的用于电动公共汽车的辅助逆变器12的过电流损坏防止方法将描述如下。
当电动公共汽车起动时，可以通过压力传感器10和空气压力开关11确定空气压缩机的操作条件是否得到满足。特别地，当压力传感器10感测空气罐中的压力并且确定空气罐中的压力基本上低于8Bar或者空气压力开关处于接通时，包括控制器的逆变器12可以接收从压力传感器10和空气压力开关11输入的感测信号，以便在空气压缩机被操作之前通过降低施加到动力转向电动机15上的电压来降低动力转向电动机15的速度。此外，当空气压缩机的离合器通过接通继电器13而被接合时可以使空气压缩机运转。
当空气罐中的压力基本上在8Bar以上、或者当空气压力开关11处于关断时，离合器可以通过继电器13而被释放以停止空气压缩机的操作。
图6示出根据比较以下两种情况下是否产生浪涌电流的实验而获得的示例性结果：在空气压缩机的操作条件下在离合器被连接到空气压缩机之前未控制动力转向电动机15的速度的情况；以及根据本发明的示例性实施例，在离合器被连接到空气压缩机之前通过控制动力转向电动机15的速度来减小动力转向电动机15的速度的情况。
参考图6，当在离合器被连接到动力转向电动机上之前未控制动力转向电动机的速度时，从离合器被连接到动力转向电动机上的时刻起产生浪涌电流。当在离合器被连接到动力转向电动机上之前通过控制动力转向电动机的速度来降低动力转向电动机的速度时，不会产生浪涌电流。
因此，根据本发明，当空气罐中的压力基本上低于设定值或者空气压力开关11处于接通时，可以在空气压缩机运转之前降低动力转向电动机15的速度，以防止辅助逆变器12由于浪涌电流的产生而被损坏，从而提高部件的可靠性。
根据上述公开，本发明可以减轻由于损坏而更换辅助逆变器12的繁重成本。此外，可以预先防止当驾驶期间辅助逆变器12被损坏时由于动力转向电动机和空气压缩机的不运转引起转向和制动失去控制所导致的事故。
已经参考本发明的示例性实施例详细描述了本发明。然而，本领域技术人员应理解的是，可以对这些实施例做出变更而不脱离本发明的原理和精神，其中本发明的范围由所附权利要求及其等价形式限定。

Claims (2)

1.一种用于电动公共汽车的辅助逆变器的过电流损坏防止方法，包括：
通过传感器感测空气罐中的压力以及空气压力开关是否处于接通位置；
当所述空气罐中的压力低于设定值、或者当所述空气压力开关处于接通时，由逆变器通过控制施加到动力转向电动机的电压来降低所述动力转向电动机的速度；以及
在离合器处于接合位置之前，降低所述动力转向电动机的速度，
由所述逆变器将所述离合器保持在接合位置以将所述动力转向电动机的动力传递给空气压缩机。
2.一种用于电动公共汽车的辅助逆变器的过电流损坏防止装置，包括：
压力传感器和空气压力开关，这两者都被配置成检测空气罐中的压力；以及
逆变器，其被配置成从所述压力传感器和所述空气压力开关接收信号，以便当所述空气罐中的压力低于设定值、或者当所述空气压力开关处于接通时通过控制施加到动力转向电动机的电压来控制所述动力转向电动机的速度，
其中在离合器处于接合位置之前，所述动力转向电动机的速度被降低。
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