CN111033924A - 具有固态断路器的矩阵转换器 - Google Patents

具有固态断路器的矩阵转换器 Download PDF

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CN111033924A
CN111033924A CN201880053581.1A CN201880053581A CN111033924A CN 111033924 A CN111033924 A CN 111033924A CN 201880053581 A CN201880053581 A CN 201880053581A CN 111033924 A CN111033924 A CN 111033924A
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matrix converter
matrix
switch
power
converter
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H·李
周信
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Eaton Intelligent Power Ltd
Eaton Corp
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/0822Integrated protection, motor control centres
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/297Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal for conversion of frequency
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00Details of emergency protective circuit arrangements
    • H02H1/0007Details of emergency protective circuit arrangements concerning the detecting means
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1216Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for AC-AC converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/293Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00Details of emergency protective circuit arrangements
    • H02H1/0007Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015Using arc detectors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00Details of emergency protective circuit arrangements
    • H02H1/04Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/083Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for three-phase systems
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/16Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
    • H02H3/162Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for ac systems
    • H02H3/165Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for ac systems for three-phase systems
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/32Means for protecting converters other than automatic disconnection

Abstract

本发明公开了一种矩阵转换器,该矩阵转换器包括被构造成感测流过矩阵转换器的电流的一个或多个电流传感器,包括多个固态晶体管的开关矩阵,以及控制电路,该控制电路被构造成基于感测到的电流检测流过矩阵转换器的电力的故障,以控制开关矩阵来驱动外部设备,并且响应于检测到流过矩阵转换器的电力的故障控制开关矩阵切换以防止电力流过矩阵转换器内部或者外部设备的外部。

Description

具有固态断路器的矩阵转换器
相关申请的交叉引用
本专利申请要求于2017年8月29日提交的标题为“MATRIX CONVERTER WITH SOLIDSTATE CIRCUIT BREAKER”的美国临时专利申请62/551,581的优先权,其内容以引用的方式并入本文。
背景技术
技术领域
本发明所公开的概念整体涉及AC-AC转换器,并且具体地讲,涉及矩阵转换器。
发明背景
矩阵转换器是一种AC-AC转换器,它使用开关矩阵将交流电从电源转换为供负载使用的交流电。图1示出了矩阵转换器1000的一个示例。矩阵转换器包括输入滤波器1001和开关矩阵1002。开关矩阵1002连接在矩阵转换器1000的输入和输出之间。矩阵转换器1000的输出处的电力可通过选择性地控制开关矩阵1001中包括的开关来控制。
基于开关的状态,开关矩阵1001的输入和输出之间存在数学关系,如以下公式所示:
Figure BDA0002386159650000011
Figure BDA0002386159650000012
其中当开关关闭时其值为1,当开关打开时为0。矩阵乘法可用于基于开关矩阵1002的输入处的电压和电流和开关的状态来确定开关矩阵1002的输出处的电压和电流。通过控制开关的状态,可控制开关矩阵1002的输出处的电压和电流。
矩阵转换器已被用作电动马达的驱动器。为了提供电路保护,除了矩阵转换器之外,还提供了断路器或保险丝。添加断路器或保险丝増加电动马达系统的成本和复杂性。断路器和保险丝本身以及必须将断路器或保险丝连接到马达起动器和/或马达控制器,这増加了系统的成本。图2示出了电动马达系统2000的一个示例。图2的电动马达系统2000包括电动马达驱动器2001,分支断路器2002,马达断路器2003和马达2004。如图2所示,提供了各种断路器2002,2003以保护系统2000。
矩阵转换器存在改进的余地。
发明内容
根据本发明所公开的概念的一个方面,矩阵转换器包括:构造成感测流过矩阵转换器的电流的一个或多个电流传感器;开关矩阵,该开关矩阵包括多个固态晶体管;以及控制电路,该控制电路被构造成基于感测到的电流来检测流过矩阵转换器的电力中的故障,以控制开关矩阵以驱动外部设备,并且响应于检测到流过矩阵转换器的电力的故障来控制开关矩阵切换以防止电力流过矩阵转换器内部或外部设备的外部。
附图说明
当结合附图阅读时,可以从以下优选的实施方案描述中获得对本发明所公开的概念的完整理解,其中:
图1是矩阵转换器的示意图;
图2是电动马达和驱动系统的示意图;
图3是包括根据本发明所公开的概念的示例性实施方案的包括矩阵转换器的电动马达和驱动系统的示意图;
图4-图8是根据本发明所公开的概念的其他示例性实施方案的矩阵转换器的示意图。
优选实施方案描述
本文使用的方向短语,诸如例如左、右、前、后、顶部、底部、以及它们的衍生词,涉及附图中所示的元件的取向,并且并不限制权利要求书,除非在其中明确地表述。
如本文所用,两个或更多个零件“联接”在一起的表述应当意为这些零件直接接合在一起或通过一个或多个中间零件接合在一起。
如本文所用,术语“处理器”应当意为可存储、检索和处理数据的可编程模拟和/或数字设备;微处理器;微控制器;微型计算机;中央处理单元;或任何合适的处理设备或装置。
图3是根据本发明所公开的概念的示例性实施方案的电动马达和驱动系统1的示意图。电动马达和驱动器1包括电源10,电动马达20和电耦接在电源10和电动马达20之间的矩阵转换器100。矩阵转换器100被构造成通过使用开关矩阵130从电源10转换电力来驱动电动马达20。
矩阵转换器100包括一个或多个电流传感器110(例如,但不限于电流互感器),隔离开关120,开关矩阵130,控制电路140和输入滤波器145。输入滤波器145可类似于图1所示的输入滤波器。本领域的普通技术人员应当理解,矩阵转换器100可包括一个或多个其他类型的传感器(例如,但不限于电压传感器,温度传感器等),但图3中未示出此类其他传感器。矩阵转换器100提供固态断路器的功能。在本发明所公开的概念的一些示例性实施方案中,矩阵转换器100能够检测故障(例如,但不限于电弧故障,接地故障,过流等),并且响应性地启动跳闸以阻止电流在矩阵转换器100内部或在电动马达20外部流动。
隔离开关120电耦合到矩阵转换器100的输入和开关矩阵130之间。打开隔离开关110提供电流隔离。矩阵转换器100还可包括磁性致动器(未示出)。磁性致动器可致动以打开隔离开关120。隔离开关120的打开由控制电路140控制。在本发明所公开的概念的一些示例性实施方案中,隔离开关120为互搭接头。在没有具有非常高的接触弹簧力的大开关机构的情况下,互搭接头设计允许接触结构利用电流生成的磁力使得接触在过载或短路事件期间保持闭合。然而,应当理解,在不脱离所公开概念的范围的情况下,可采用其他类型的开关。
开关矩阵130包括在矩阵转换器100的输入和输出之间的矩阵中布置的多个开关。开关可由固态部件诸如晶体管构成。在本发明所公开的概念的一些示例性实施方案中,开关可以是由例如晶体管和二极管构成的双向开关。本领域的普通技术人员应当理解,在开关中可采用任何合适类型的晶体管,诸如绝缘栅双极晶体管(IGBT),金属氧化物—半导体场效应晶体管(MOSFET),集成门换流晶闸管(IGCT)或其他类型的晶体管。开关可用硅(Si),碳化硅(SiC),氮化镓(GaN)或任何合适的宽带隙(WBG)材料制成。在一些示例性实施方案中,开关由GaN或SiC制成。开关的状态由控制电路140控制。矩阵转换器100的输入电压和电流,矩阵转换器100的输出电压和电流,以及开关的状态之间存在数学关系。通过控制开关的状态,控制电路140能够控制矩阵转换器100的输出。在所公开的概念的示例性实施方案中,控制电路140被构造成控制开关的状态以便驱动电动马达20。
控制电路140还被构造成基于电流传感器110的输出来监测流过矩阵转换器100的电力。控制电路140被构造为提供电路保护功能,诸如由断路器中的电子跳闸单元提供的功能。例如,控制电路140被构造成接收来自电流传感器110的所感测的电流水平。控制电路140被构造成监测流过矩阵转换器100的电力中的故障的所感测的电流水平,并且响应于检测到故障来启动跳闸。本领域的普通技术人员应当理解,控制电路140可检测多种不同类型的故障,并且可基于故障的类型和严重性来确定是否以及何时启动跳闸。
控制电路140通过控制开关矩阵130中的开关的切换来启动跳闸,以防止电力在矩阵转换器100内部或在电动马达20外部流动。例如并且不受限制,控制电路140可导致对应于存在故障的相位的开关打开。开关是能够非常快速切换的固态部件。
控制电路140还被构造成控制隔离开关120打开。当控制电路140启动跳闸时,控制电路140还可控制隔离开关120在开关打开之后打开。
控制电路140提供控制开关矩阵130中的开关以驱动电动马达20和断路器中的电子跳闸单元的功能的组合控制功能。开关矩阵130既用于提供AC-AC电源转换以驱动马达,又用作开关以中断作为固态断路器功能的一部分的电流。通过将断路器功能集成到矩阵转换器100中,矩阵转换器100不需要外部断路器来为其提供保护。另外,通过将开关矩阵130用于双重目的,矩阵转换器100的功能増大而不添加太多额外的部件。
在一些示例性实施方案中,控制电路140可包括处理器和相关联的存储器。存储器可包括在处理器中或作为单独的部件。处理器可以是例如但不限于微处理器、微控制器,或一些其他合适的处理设备或电路,它们与存储器或另一合适的存储器交接。存储器可以是各种类型的内部和/或外部存储介质中的一种或多种中的任何一种,该各种类型的内部和/或外部存储介质为诸如但不限于RAM、ROM、EPROM、EEPROM、FLASH等,它们提供存储寄存器(即,机器可读介质)以用于进行数据存储,诸如以计算机的内部存储区域的方式进行数据存储,并且可以是易失性存储器或非易失性存储器。存储器还可存储处理器被构造为执行的一个或多个例程。
在图3所示的示例性实施方案中,电流传感器110显示在矩阵转换器100的输入端处。然而,本领域的普通技术人员将理解,在不脱离本发明所公开的概念的范围的情况下,可以另选地或另外通过矩阵转换器100的输出设置电流传感器110。本领域的普通技术人员还应当理解,控制电路140可使用来自其他传感器(未示出)的输入来确定是否启动跳闸。例如,控制电路140可基于来自电压传感器和/或温度传感器的输入来启动跳闸。
尽管未示出,但矩阵转换器100还可包括电源电路。电源电路可转换或收获来自电源10的电力并使用此类电力给控制电路140和/或矩阵转换器100的其他部件供电。
在本发明所公开的概念的一些示例性实施方案中,矩阵转换器100还可包括缓冲电路。缓冲电路可电耦合矩阵转换器100的输入和输出之间的各个点中的任一个。缓冲电路包括被布置为缓冲器的一个或多个电阻器,二极管和电容器。缓冲电路被构造成吸收能量并提供针对诸如电压瞬变之类的事件的保护。
图3的示例性实施方案中所示的矩阵转换器100是一种类型的矩阵转换器的一个示例。例如,图3的矩阵转换器100包括开关矩阵130,该矩阵包括18个双向开关。然而,应当理解,所公开的概念适用于各种不同类型的矩阵转换器。例如,图4-图8示出了根据本发明所公开的概念的一些其他示例性实施方案的矩阵转换器。虽然图4-图8的矩阵转换器中未示出隔离开关120,但本领域的普通技术人员应当理解,在不脱离所公开的概念的范围情况下,隔离开关可用于图4-图8的矩阵转换器中。
图4是根据本发明所公开的概念的示例性实施方案的矩阵转换器200的示意图。图4的矩阵转换器200包括18个开关,其中12个是双向的,但布置方式不同于图3的矩阵转换器100。在图4的矩阵转换器200中,控制电路140使用包括12个双向开关的开关矩阵230启动跳闸作为固态断路器功能的一部分。
图5是根据本发明所公开的概念的示例性实施方案的矩阵转换器300的示意图。图5的矩阵转换器300包括15个开关并且包括开关矩阵330,该开关矩阵包括由控制电路140使用的9个开关来启动跳闸作为固态断路器功能的一部分。
图6是根据本发明所公开的概念的示例性实施方案的矩阵转换器400的示意图。图6的矩阵转换器400类似于图5的矩阵转换器300。然而,图6的矩阵转换器400被示出为还包括隔离开关120和缓冲电路450。应当理解,本领域的普通技术人员将会知道,隔离开关120和/或缓冲电路450可用于本文所公开的任何示例性实施方案中。
图7是根据本发明所公开的概念的示例性实施方案的矩阵转换器500的示意图。图7的矩阵转换器500包括12个开关并且包括开关矩阵530,该开关矩阵包括由控制电路140使用的6个开关来启动跳闸作为固态断路器功能的一部分。
图8是根据本发明所公开的概念的示例性实施方案的矩阵转换器600的示意图。图8的矩阵转换器600包括9个开关并且包括开关矩阵630,该开关矩阵包括由控制电路140使用的3个开关来启动跳闸作为固态断路器功能的一部分。
虽然图3-图8示出了根据本发明所公开的概念的示例性实施方案的矩阵转换器的不同布置方式,本领域的普通技术人员应当理解,这些布置仅仅是所公开概念的应用的一些实例。应当理解,所公开的概念可用于任何合适类型的矩阵转换器中。本领域的普通技术人员还应当理解,在不脱离所公开概念的范围的情况下,可通过添加,减去和/或重新布置部件来修改示例性实施方案。本领域的普通技术人员还应当理解,在不脱离所公开概念的范围的情况下,所公开的概念可应用于马达控制之外的技术领域。
虽然已经详细地描述了本发明所公开的概念的特定实施方案,但是本领域的技术人员应当理解,可以根据本公开的总体教导内容来开发出那些细节的各种修改和替换。因此,所公开的特定布置仅是说明性的,而不限制本发明所公开的概念的范围,本发明所公开的概念的范围由所附权利要求书的全部范围以及其任何和所有等同物给出。

Claims (15)

1.一种矩阵转换器(100),包括:
一个或多个电流传感器(110),所述电流传感器被构造成感测流过所述矩阵转换器的电流;
开关矩阵(130),所述开关矩阵包括多个固态晶体管;和
控制电路(140),所述控制电路被构造成基于感测到的电流来检测流过所述矩阵转换器的电力中的故障,以控制所述开关矩阵来驱动外部设备(20),并且响应于检测到流过所述矩阵转换器的电力的故障来控制所述开关矩阵切换以防止电力流过所述矩阵转换器内部或所述外部设备的外部。
2.根据权利要求1所述的矩阵转换器,还包括:
隔离开关(120),所述隔离开关被构造成在所述开关矩阵关闭时提供电流隔离。
3.根据权利要求1所述的矩阵转换器,其中所述隔离开关为互搭接头。
4.根据权利要求1所述的矩阵转换器,其中控制电路被构造成通过控制所述多个固态晶体管的状态来控制所述开关矩阵以驱动所述外部设备。
5.根据权利要求1所述的矩阵转换器,其中所述多个固态晶体管包括绝缘栅双极晶体管(IGBT),金属氧化物半导体场效应晶体管(MOSFET)或集成门极换流晶闸管(IGCT)中的至少一者。
6.根据权利要求1所述的矩阵转换器,其中所述固态晶体管中的一者或多者由硅(Si),碳化硅(SiC)或氮化镓(GaN)中的至少一者构成。
7.根据权利要求1所述的矩阵转换器,其中所述控制电路被构造为控制所述开关矩阵以提供流过所述矩阵转换器的电力的AC-AC转换。
8.根据权利要求1所述的矩阵转换器,其中所述外部设备是电动马达。
9.根据权利要求1所述的矩阵转换器,还包括:
缓冲电路(450),所述缓冲电路被构造成吸收能量并提供对电压瞬变的保护。
10.根据权利要求1所述的矩阵转换器,其中所述开关矩阵包括多个开关,所述多个开关各自包括所述多个固态晶体管中的一个和对应的二极管。
11.根据权利要求10所述的矩阵转换器,其中所述多个开关是双向开关。
12.根据权利要求10所述的矩阵转换器,其中所述控制电路被构造为响应于检测到流过所述矩阵转换器的电力的故障而控制所述多个开关的子集切换以防止电力流过所述矩阵转换器的内部或所述外部设备的外部。
13.根据权利要求10所述的矩阵转换器,其中所述多个开关为至少12个开关。
14.根据权利要求1所述的矩阵转换器,还包括:
电源电路,所述电源电路被构造为收获流过所述矩阵转换器的电力并且使用所述收获的电力来为所述矩阵转换器的一个或多个部件供电。
15.一种电动马达和驱动系统(1),包括:
电源(10);
电动马达(20);和
根据权利要求1-14中任一项所述的矩阵转换器,所述矩阵转换器电连接在所述电源和所述电动马达之间。
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