CN1025082C - 带有附加电流的接地用户供电电路结构 - Google Patents

带有附加电流的接地用户供电电路结构 Download PDF

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Publication number
CN1025082C
CN1025082C CN90109078A CN90109078A CN1025082C CN 1025082 C CN1025082 C CN 1025082C CN 90109078 A CN90109078 A CN 90109078A CN 90109078 A CN90109078 A CN 90109078A CN 1025082 C CN1025082 C CN 1025082C
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voltage
current
power supply
input end
differential levels
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CN1051990A (zh
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莱恩哈德·福欧特
赫尔穆特·布罗克
沃尔福冈·佛莱塔格
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ABB Training Center GmbH and Co KG
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Hartmann and Braun AG
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

本发明涉及一种带有表示测量值附加电流(I)的接地用户的供电电路结构，为了使在用户负载上的电压没有同相信号叠加上去，应用平移参考点的原理，为此，在用户负载(5)上形成的电压(U)被接到一个高阻抗变换器(6)的输入端，该阻抗变换器(6)的输出端的电位(9)作为可调放大器和形成测量值的额定电压(3)的参考电位。

Description

本发明涉及一种带有代表测量值附加电流的接地用户供电电路结构。
在DD-PS240086中，描述了一个用户的供电电路结构。将代表测量值的额定电压和一个实际电压接到一个可调放大器的输入端。其中实际电压值由一个附加电流流过电流测量电阻上的分压取得。
图1表示一种结构，它是由Tietze/Schenk在1971年的“半导体-电路技术”第340页发表的。该结构由一个带有差分级（2）的可调放大器及一个可控电源（1）组成。可调放大器给出一个依赖于额定电压（3）的附加电流I，电流I流过一个用户的负载（5）。该电路结构构成一个调整环路，其中在电流测量电阻4上的实际电压降作为反馈调整值。对于一端接地（8）用户而言，该电路存在一个问题，即代表测量值的实际电压（7）与一个同相信号相叠加，而该信号可能会在一个较大电压范围内波动。
在1980年的“半导体-电路技术”667页-670页Tietze/Schenk讨论了由不希望有的同相信号而引起的问题，并在2.5.12章节中作为补救办法而提出了“分离放大器”，即：在发送器和接收器之间的信号联结和接地联结相分开。在发送器部分有浮地联结。
本发明目的是提出上述类型的电路结构，其中使由用户负载引起的同相电压在可调放大器上产生的反馈作用减到最小。
本发明目的由本发明上述的电路结构解决，该电路结构特征由权利要求书特征部分所述。为了避免同相抑制的问题出现，这里应用平移参考点的原理。可调放大器和额定电压的参考电位这样进行跟踪，即使其与用户负载上的压降相符。由于有了这个假设参考电位，可调放大器的测量电阻上的实际电压（7）非同相。平移供电通过一个电压调节器实现，其参考电位即是用户负载上的电压。
下面通过一个实例对本发明给与一说明，图2表示本发明电路的基本原理图。
一个差分级（2）和一个电压可控电源（1）构成一可调放大器，可调放大器提供一由额定电压（3）决定的附加电流I，这一电流流过一个用户的负载（5）并在其上有一电压降。用户负载一端接地（8）。一个电流测量电阻（4）与负载（5）串联。电流I在电阻（4）上产生一电压降。即实际电压（7），这一电压接在差分级（2）的正相输入端，在用户负载（5）上产生的电压降（U）接到一个带有放大作用的高阻抗变换器（6）的输入端。在阻抗变换器（6）的输出端相对于在电路基点（9）上的电位接到差分级（2）的反相输入端，同时也作为额定电压（3）的参考电位。这种电路结构的作用在于，它使得对于该封闭可调放大器在电路基点（9）上的电位及表示各个测量值的额定电压（3）与在用户负载（5）上的电压降相符。通过阻抗变换器（6），电路基点（9）上的电位始终被跟踪，使得在差分级（2）上的实际电压（7）上不可能叠加一个同相信号。

Claims (1)

1、带有代表一个测量值的附加电流的接地用户供电电路结构，其中带有一个由电压可控电源(1)和一个差分级(2)构成的可调放大器，差分级(2)的输入端串接一个电流测量电阻(4)，差分级(2)的输出端同构成测量值额定电压(3)连接以及电压可控电源(1)的输入端联接在加法器上，并且能够在流过附加电流(I)的电流测量电阻(4)上取得一个实际电压值7；差分级(2)的输入端和电压可控电源(1)的输出端联接，
其特征在于：
在用户负载(5)上的电压降(U)被接到一个高阻抗变换器(6)的输入端，该阻抗变换器(6)的输出端的电位(9)作为可调放大器和额定电压(3)的参考电位。
CN90109078A 1989-11-20 1990-11-12 带有附加电流的接地用户供电电路结构 Expired - Fee Related CN1025082C (zh)

Applications Claiming Priority (2)

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DE3938460A DE3938460C1 (zh) 1989-11-20 1989-11-20
DEP3938460.8 1989-11-20

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CN1051990A CN1051990A (zh) 1991-06-05
CN1025082C true CN1025082C (zh) 1994-06-15

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US (1) US5138248A (zh)
EP (1) EP0462314B1 (zh)
JP (1) JPH0612498B2 (zh)
CN (1) CN1025082C (zh)
DE (2) DE3938460C1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604430A (en) * 1994-10-11 1997-02-18 Trw Inc. Solar array maximum power tracker with arcjet load
US6239997B1 (en) * 2000-09-01 2001-05-29 Ford Motor Company System for connecting and synchronizing a supplemental power source to a power grid
US6919650B2 (en) * 2002-05-31 2005-07-19 Ballard Power Systems Corporation Hybrid synchronization phase angle generation method
DE10257632B4 (de) * 2002-12-09 2005-03-03 Zentrum Mikroelektronik Dresden Ag Verfahren zur Signalausgabe durch AS-i-Transmitter in As-i Einheiten eines AS-i Bussystems
CN103294090A (zh) * 2013-05-24 2013-09-11 南京化工职业技术学院 直流信号发生器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546564A (en) * 1968-11-25 1970-12-08 Us Air Force Stabilized constant current apparatus
US3735240A (en) * 1971-10-15 1973-05-22 Motorola Inc Integrated circuit current regulator with differential amplifier control
JPS603098A (ja) * 1983-06-20 1985-01-09 株式会社日立製作所 電圧電流変換回路
DD240086A1 (de) * 1985-08-05 1986-10-15 Berlin Treptow Veb K Spannungs-strom-wandler
GB2182788B (en) * 1985-11-08 1989-12-28 Plessey Co Plc Voltage regulator circuit
DE3715886A1 (de) * 1987-05-13 1988-11-24 Philips Patentverwaltung Steuerbare konstantstromquelle
JP2710326B2 (ja) * 1988-01-31 1998-02-10 日本電気株式会社 駆動回路
DE3815979A1 (de) * 1988-05-10 1989-11-23 Philips Patentverwaltung Stromversorgungseinrichtung

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JPH0612498B2 (ja) 1994-02-16
US5138248A (en) 1992-08-11
EP0462314B1 (de) 1994-09-28
DE59007348D1 (de) 1994-11-03
JPH03175511A (ja) 1991-07-30
CN1051990A (zh) 1991-06-05
DE3938460C1 (zh) 1991-02-07
EP0462314A2 (de) 1991-12-27
EP0462314A3 (en) 1992-01-29

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