CN101320942B - 用于控制变频器单元的方法及变频器组件 - Google Patents

用于控制变频器单元的方法及变频器组件 Download PDF

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CN101320942B
CN101320942B CN200810108991XA CN200810108991A CN101320942B CN 101320942 B CN101320942 B CN 101320942B CN 200810108991X A CN200810108991X A CN 200810108991XA CN 200810108991 A CN200810108991 A CN 200810108991A CN 101320942 B CN101320942 B CN 101320942B
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frequency converter
converter unit
control signal
circuit
user interface
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CN101320942A (zh
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J·坎加斯
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ABB Azipod Oy
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/02—Circuit arrangements for ac mains or ac distribution networks using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0009—Devices or circuits for detecting current in a converter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5483—Systems for power line communications using coupling circuits

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inverter Devices (AREA)
  • Ac-Ac Conversion (AREA)
  • Near-Field Transmission Systems (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

本发明名称为用于控制变频器单元的方法及变频器组件，它提供了一种控制变频器单元的方法，变频器单元(2)包含向变频器单元供给输入频率处电能的输入连接，和从变频器单元供给输出频率处电能的输出连接，该方法包括如下控制步骤，在该控制步骤中用控制信号来控制变频器单元(2)。在控制步骤中，控制信号经由感应连接供给到连接到变频器单元(2)的输入连接或输出连接的至少一条线路(10，12)，以用于传送电能，控制信号通过至少一条线路(10，12)供给到变频器单元(2)。

Description

用于控制变频器单元的方法及变频器组件
技术领域
本发明涉及变频器的控制。
背景技术
在传统的变频器组件中，变频器单元的用户接口部件设置成与变频器单元相关联。这种设置的问题在于，如果变频器单元不方便地被放置，比如放在高处，则对用户来说难以对变频器单元进行控制。
发明内容
本发明的目的在于提供一种用于控制变频器单元的方法和允许解决上述问题的变频器组件。通过具有独立权利要求中陈述特征的方法与变频器组件可以实现本发明的目的。本发明的优选实施例公开于独立权利要求中。
本发明是基于这样一种考虑，通过将控制信号经由感应连接而供给到连接至变频器单元的输入连接或输出连接的线路上，从而控制变频器单元，控制信号通过所涉及线路供给到变频器单元。
控制信号可以(例如)在馈电网络与变频器单元之间的线路中，或者在变频器单元与其负载之间的线路中传播。根据本发明的实施例，单个用户接口部件用来控制连接到一个相同电网的多个变频器单元，控制信号经由网络传播。
本发明的一个优点在于，必要时变频器单元的用户接口部件可以放置成离开变频器单元一定距离，用户接口部件可以是可移动的。
附图说明
以下将参考优选实施例及附图更详细的介绍本发明，其中
图1显示了带有用户接口部件的变频器组件，其中用户接口部件耦合到馈电网络与变频器单元之间的线路上；
图2显示了带有用户接口部件的变频器组件，其中用户接口部件耦合到变频器单元及其负载之间的线路上。
图3显示了变频器组件，其中单个用户接口部件用来控制连接到一个相同电网的多个变频器单元。
图4A显示了设置有可开(openable)感应回路的用户接口部件，感应回路处于打开位置；及
图4B显示了图4A的用户接口部件，其中可开感应回路处于闭合位置。
具体实施方式
图1显示了根据本发明实施例的变频器组件，包括变频器单元2、用户接口部件4以及由变频器单元馈电(feed)的电动机6。馈电网络8在输入频率处通过馈电电缆10向变频器单元2的输入连接供给电能。变频器单元2在输出频率处通过电动机电缆12从其输出连接向电动机供给电能。用户接口部件4通过在馈电电缆10之上将控制信号发送到变频器单元2，以控制变频器单元2。控制信号从用户接口部件4经信号接口部件14传播到馈电电缆10。
图2显示了变频器组件，该变频器组件是图1中所示装置的一种改型。图2中组件的用户接口4，不是连接到馈电电缆10，而是连接到电动机电缆12，即用户接口部件4通过电动机电缆12将控制信号发送到变频器单元2。载有从用户接口部件4到电动机电缆12的控制信号的信号接口部件用参考标记14′来表示。除此以外，图1和图2中的变频器组件完全相同。
信号接口部件14和14′配置成感应地连接到变频器单元2的电缆。该感应连接可以通过比如给信号接口部件提供可开感应回路来实现，在打开位置感应回路可以环绕电缆来放置，而在闭合位置时感应回路设置成向感应回路内的电气线路供给控制信号。可开感应回路的工作原理通常从钳位电表(clipon meter)得知。
图4A和图4B显示了根据本发明实施例的设有包括可开感应回路的信号接口部件14″的用户接口部件4″。用户接口部件4″包括激励构件42″，通过按压激励构件，用户可以打开感应回路的钳夹141″和142″。在图4A中，可开感应回路的钳夹141″与142″处于打开位置，在打开位置时，钳夹141″与142″顶端之间的距离比馈电电缆10的直径大很多。在图4B中，可开感应回路的钳夹141″与142″处于闭合状态，馈电电缆10位于由钳夹141″与142″形成的感应回路里面，因而控制信号能够感应地供给到馈电电缆10中。
图3显示了一种变频器组件，其中单个用户接口部件104用来控制连接到同一个馈电网络108的三个变频器单元102、202以及302。通过馈电电缆110，从馈电网络108向变频器单元102供给电能，变频器单元102通过电动机电缆112馈电给电动机106。通过馈电电缆210将电能从馈电网络108供给到变频器单元202，变频器单元202通过电动机电缆212馈电给电动机206。变频器单元302的馈电电缆用引用标号310表示，该馈电电缆的电动机电缆用引用标号312表示，电动机用引用标号306表示。用户接口部件104经由信号接口部件114感应式地连接到馈电网络108。
图1-3的用户接口部件4、104可以配置成执行双向数据传输，在双向数据传输中，用户接口部件4、104不仅能够向变频器单元发送控制信号，还能够从变频器单元接收响应信号。例如，响应信号可以包含由变频器供给的电流和电压的实际值上的数据，以及变频器单元的任何故障信号上的数据。
本发明的用户接口部件可以设置成通过使用公知的调制方式，比如PSK、ASK、FSK或PAM，连同公知的协议，发送控制信号到变频器单元。在图1和图3的实施例中，已调控制信号通过馈电网络中的基频电压波而供给。在图2的实施例中，已调控制信号通过变频器单元产生的输出频率电压波而供给。
变频器组件的用户接口部件可以进行配置，使其发送的控制信号经由变压器以及其它产生电流隔离的类似设备而传播。
对本领域的技术人员来说，很明显本发明的基本思想可以用多种方法来实现。因此，本发明及其实施例不局限于上述示例，而是可以在权利要求书的范围内进行修改。

Claims (2)

1.一种用于控制变频器单元的方法，所述变频器单元(2)包含用于向所述变频器单元供给输入频率处的电能的输入连接，和用于从所述变频器单元供给输出频率处的电能的输出连接，所述方法包括这样的控制步骤，在所述控制步骤中，所述变频器单元(2)被借助于控制信号来进行控制，所述方法的特征在于，在所述控制步骤中，所述控制信号通过感应连接而供给到连接至所述变频器单元(2)的所述输入连接或所述输出连接的至少一条线路(10，12)，以用于传送电能，所述控制信号通过所述至少一条线路(10，12)而供给到所述变频器单元(2)，其中所述感应连接包括可开感应回路，所述可开感应回路具有打开位置和闭合位置，所述打开位置被设置用于将所述可开感应回路设定成围绕所述至少一条线路(10，12；110；112)，且所述闭合位置被设置用于向所述可开感应回路内的所述至少一条线路(10，12；110，112)供给控制信号。
2.一种变频器组件，包括变频器单元(2，102)和用户接口部件(4；4″；104)，所述变频器单元(2，102)包含用于向所述变频器单元供给输入频率处的电能的输入连接，和从所述变频器单元供给输出频率处的电能的输出连接，所述用户接口部件(4；4″；104)配置成借助控制信号来控制所述变频器单元(2；102)，其特征在于，所述用户接口部件(4；4″；104)设置成通过所述变频器单元的所述输入连接或所述输出连接发送控制信号到所述变频器单元(2，102)，所述用户接口部件(4；4″；104)设置成感应地连接到至少一条线路(10，12；110，112)，所述至少一条线路连接到所述变频器单元(2；102)的所述输入连接或所述输出连接，以用于传送电能，从而允许所述控制信号通过所述至少一条线路(10，12；110，112)而发送到所述变频器单元(2；102)，作为对所述控制信号的响应，其中所述变频器组件还包括设置成从所述用户接口部件(4；4″；104)传送所述控制信号到所述至少一条线路(10，12；110，112)的信号接口部件(14，14″；114)，所述信号接口部件(14；14″；114)包括具有打开位置和闭合位置的可开感应回路，所述打开位置被设置用于将所述可开感应回路设定成围绕所述至少一条线路(10，12；110；112)，且所述闭合位置被设置用于向所述可开感应回路内的所述至少一条线路(10，12；110，112)供给控制信号。
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FI20075418A (fi) 2008-12-07
EP2001102A3 (en) 2016-07-06
US8755210B2 (en) 2014-06-17
EP2001102A2 (en) 2008-12-10
US20080310206A1 (en) 2008-12-18
CN101320942A (zh) 2008-12-10
FI20075418A0 (fi) 2007-06-06

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